[PATCH 00/18] video: bochs: Remove the x86 limitation

[PATCH 00/18] video: bochs: Remove the x86 limitation

[Bin Meng]

The Bochs VGA card emulated by QEMU does not enforce any architecture.
It was first introduced on x86 and indeed the x86 IO instruction is
used to access the legacy VGA IO ports, but that does not mean it has
to be done like this.

The first half of this series enhances the bochs video driver to
remove the x86 limitation.

The second half of this series enables bochs video as the output
console for QEMU RISC-V, to prove that the bochs video driver can
indeed work on a non-x86 architecture. To make it actually useful,
enable a usb keyboard as well, otherwise we can't just type anything :-)

This series is available at u-boot-x86/bochs for testing.


Bin Meng (17):
  dm: video: Cosmetic style fix
  video: bochs: Drop inclusion of <asm/mtrr.h>
  video: bochs: Drop the useless argument of bochs_vga_write()
  video: bochs: Avoid using IO instructions to access VGA IO port
  video: bochs: Remove the x86 dependency
  video: kconfig: Fix wrong text for the PCI default FB size
  video: kconfig: Drop the superfluous dependency
  video: kconfig: Set default FB size for Bochs
  video: bochs: Set the frame buffer size per configuration
  riscv: qemu: Enable Bochs video support
  console: kconfig: Drop the redundant VIDEO dependency
  console: Make stdio_print_current_devices() static
  console: Refactor stdio_print_current_devices() a little bit
  console: Print out complete stdio device list
  riscv: qemu: Enable PRE_CONSOLE_BUFFER
  riscv: qemu: Remove out-of-date "riscv,kernel-start" handling
  riscv: qemu: Enable usb keyboard as an input device

Heinrich Schuchardt (1):
  riscv: define a cache line size for the generic CPU

 arch/riscv/cpu/generic/Kconfig          |  1 +
 board/emulation/qemu-riscv/Kconfig      | 13 ++++++++
 board/emulation/qemu-riscv/qemu-riscv.c | 27 +++------------
 common/Kconfig                          |  2 +-
 common/console.c                        | 44 ++++++++++++++++---------
 doc/board/emulation/qemu-riscv.rst      | 10 ++++++
 drivers/video/Kconfig                   | 15 +++++----
 drivers/video/bochs.c                   | 12 +++----
 drivers/video/bochs.h                   |  7 ++--
 drivers/video/video-uclass.c            |  6 ++--
 include/configs/qemu-riscv.h            | 15 +++------
 include/stdio_dev.h                     |  2 --
 12 files changed, 84 insertions(+), 70 deletions(-)

-- 
2.34.1

[PATCH 01/18] dm: video: Cosmetic style fix

[Bin Meng]

Some coding convention fixes for video_post_bind().

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 drivers/video/video-uclass.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c
index 949595f1bc..8f268fc406 100644
--- a/drivers/video/video-uclass.c
+++ b/drivers/video/video-uclass.c
@@ -626,10 +626,12 @@ static int video_post_bind(struct udevice *dev)
 	addr = uc_priv->video_ptr;
 	size = alloc_fb(dev, &addr);
 	if (addr < gd->video_bottom) {
-		/* Device tree node may need the 'bootph-all' or
+		/*
+		 * Device tree node may need the 'bootph-all' or
 		 * 'bootph-some-ram' tag
 		 */
-		printf("Video device '%s' cannot allocate frame buffer memory -ensure the device is set up before relocation\n",
+		printf("Video device '%s' cannot allocate frame buffer memory "
+		       "- ensure the device is set up before relocation\n",
 		       dev->name);
 		return -ENOSPC;
 	}
-- 
2.34.1

[PATCH 02/18] video: bochs: Drop inclusion of <asm/mtrr.h>

[Bin Meng]

The driver does not call any MTRR APIs.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 drivers/video/bochs.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/video/bochs.c b/drivers/video/bochs.c
index 2136b51193..fa0283c158 100644
--- a/drivers/video/bochs.c
+++ b/drivers/video/bochs.c
@@ -11,7 +11,6 @@
 #include <pci.h>
 #include <video.h>
 #include <asm/io.h>
-#include <asm/mtrr.h>
 #include <linux/sizes.h>
 #include "bochs.h"
 
-- 
2.34.1

[PATCH 03/18] video: bochs: Drop the useless argument of bochs_vga_write()

[Bin Meng]

bochs_vga_write() takes 'index' as one argument, but never uses it.

While we are here, use macros instead of magic numbers for the
VGA IO port register name and value.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 drivers/video/bochs.c | 7 ++++---
 drivers/video/bochs.h | 5 ++++-
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/video/bochs.c b/drivers/video/bochs.c
index fa0283c158..2d4526c714 100644
--- a/drivers/video/bochs.c
+++ b/drivers/video/bochs.c
@@ -27,9 +27,9 @@ static int bochs_read(void *mmio, int index)
 	return readw(mmio + MMIO_BASE + index * 2);
 }
 
-static void bochs_vga_write(int index, uint8_t val)
+static void bochs_vga_write(uint8_t val)
 {
-	outb(val, VGA_INDEX);
+	outb(val, VGA_ATT_W);
 }
 
 static int bochs_init_fb(struct udevice *dev)
@@ -78,7 +78,8 @@ static int bochs_init_fb(struct udevice *dev)
 	bochs_write(mmio, INDEX_Y_OFFSET, 0);
 	bochs_write(mmio, INDEX_ENABLE, ENABLED | LFB_ENABLED);
 
-	bochs_vga_write(0, 0x20);	/* disable blanking */
+	/* disable blanking */
+	bochs_vga_write(VGA_AR_ENABLE_DISPLAY);
 
 	plat->base = fb;
 
diff --git a/drivers/video/bochs.h b/drivers/video/bochs.h
index 4c8ec83a55..71d3d60141 100644
--- a/drivers/video/bochs.h
+++ b/drivers/video/bochs.h
@@ -6,7 +6,10 @@
 #ifndef __BOCHS_H
 #define __BOCHS_H
 
-#define VGA_INDEX	0x3c0
+#define VGA_INDEX		0x3c0
+
+#define VGA_ATT_W		0x3c0
+#define VGA_AR_ENABLE_DISPLAY	0x20
 
 #define IOPORT_INDEX	0x01ce
 #define IOPORT_DATA	0x01cf
-- 
2.34.1

[PATCH 04/18] video: bochs: Avoid using IO instructions to access VGA IO port

[Bin Meng]

At present the driver uses IO instructions to access the legacy
VGA IO ports, which unfortunately limits the driver to work only
on x86. It turns out the IO instruction is not necessary as Bochs
VGA card remaps the legacy VGA IO ports (0x3c0 -> 0x3df) to its
memory mapped register space from offset 0x400.

Update the driver to use MMIO access for VGA IO port.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 drivers/video/bochs.c | 6 +++---
 drivers/video/bochs.h | 4 +---
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/video/bochs.c b/drivers/video/bochs.c
index 2d4526c714..5923ff81c6 100644
--- a/drivers/video/bochs.c
+++ b/drivers/video/bochs.c
@@ -27,9 +27,9 @@ static int bochs_read(void *mmio, int index)
 	return readw(mmio + MMIO_BASE + index * 2);
 }
 
-static void bochs_vga_write(uint8_t val)
+static void bochs_vga_write(void *mmio, int index, uint8_t val)
 {
-	outb(val, VGA_ATT_W);
+	writeb(val, mmio + VGA_BASE + index);
 }
 
 static int bochs_init_fb(struct udevice *dev)
@@ -79,7 +79,7 @@ static int bochs_init_fb(struct udevice *dev)
 	bochs_write(mmio, INDEX_ENABLE, ENABLED | LFB_ENABLED);
 
 	/* disable blanking */
-	bochs_vga_write(VGA_AR_ENABLE_DISPLAY);
+	bochs_vga_write(mmio, VGA_ATT_W - VGA_INDEX, VGA_AR_ENABLE_DISPLAY);
 
 	plat->base = fb;
 
diff --git a/drivers/video/bochs.h b/drivers/video/bochs.h
index 71d3d60141..3facf690e5 100644
--- a/drivers/video/bochs.h
+++ b/drivers/video/bochs.h
@@ -11,9 +11,6 @@
 #define VGA_ATT_W		0x3c0
 #define VGA_AR_ENABLE_DISPLAY	0x20
 
-#define IOPORT_INDEX	0x01ce
-#define IOPORT_DATA	0x01cf
-
 enum {
 	INDEX_ID,
 	INDEX_XRES,
@@ -34,6 +31,7 @@ enum {
 #define LFB_ENABLED	BIT(6)
 #define NOCLEARMEM	BIT(7)
 
+#define VGA_BASE	0x400
 #define MMIO_BASE	0x500
 
 #endif
-- 
2.34.1

[PATCH 05/18] video: bochs: Remove the x86 dependency

[Bin Meng]

Now that the driver is legacy free, remove the x86 dependency so
that it can be used on non-x86 architectures.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 drivers/video/Kconfig | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index b41dc60cec..3cdaa5ff27 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -280,7 +280,6 @@ config VIDCONSOLE_AS_NAME
 
 config VIDEO_BOCHS
 	bool "Enable Bochs video emulation for QEMU"
-	depends on X86
 	help
 	  Enable this to use the Bochs video support provided in the QEMU
 	  emulator. This appears as a PCI device which U-Boot can set up to
-- 
2.34.1

[PATCH 06/18] video: kconfig: Fix wrong text for the PCI default FB size

[Bin Meng]

There is an example in the VIDEO_PCI_DEFAULT_FB_SIZE help text to
tell people how to calculate its value but the resolution given
does not match the value. Fix it.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 drivers/video/Kconfig | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 3cdaa5ff27..43ec7e6695 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -77,7 +77,7 @@ config VIDEO_PCI_DEFAULT_FB_SIZE
 	  devices to have a framebuffer allocated by U-Boot.
 
 	  Note: the framebuffer needs to be large enough to store all pixels at
-	  maximum resolution. For example, at 1920 x 1200 with 32 bits per
+	  maximum resolution. For example, at 2560 x 1600 with 32 bits per
 	  pixel, 2560 * 1600 * 32 / 8 = 0xfa0000 bytes are needed.
 
 config VIDEO_COPY
@@ -1049,7 +1049,7 @@ config SPL_VIDEO_PCI_DEFAULT_FB_SIZE
 	  devices to have a framebuffer allocated by U-Boot.
 
 	  Note: the framebuffer needs to be large enough to store all pixels at
-	  maximum resolution. For example, at 1920 x 1200 with 32 bits per
+	  maximum resolution. For example, at 2560 x 1600 with 32 bits per
 	  pixel, 2560 * 1600 * 32 / 8 = 0xfa0000 bytes are needed.
 
 config SPL_CONSOLE_SCROLL_LINES
-- 
2.34.1

[PATCH 07/18] video: kconfig: Drop the superfluous dependency

[Bin Meng]

PCI is always selected by X86 architecture hence "X86 && PCI" does
not make it better.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 drivers/video/Kconfig | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 43ec7e6695..3f6b7d71b8 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -64,8 +64,8 @@ config BACKLIGHT
 
 config VIDEO_PCI_DEFAULT_FB_SIZE
 	hex "Default framebuffer size to use if no drivers request it"
-	default 0x1000000 if X86 && PCI
-	default 0 if !(X86 && PCI)
+	default 0x1000000 if X86
+	default 0 if !X86
 	help
 	  Generally, video drivers request the amount of memory they need for
 	  the frame buffer when they are bound, by setting the size field in
@@ -1036,8 +1036,8 @@ config SPL_SYS_WHITE_ON_BLACK
 
 config SPL_VIDEO_PCI_DEFAULT_FB_SIZE
 	hex "Default framebuffer size to use if no drivers request it at SPL"
-	default 0x1000000 if X86 && PCI
-	default 0 if !(X86 && PCI)
+	default 0x1000000 if X86
+	default 0 if !X86
 	help
 	  Generally, video drivers request the amount of memory they need for
 	  the frame buffer when they are bound, by setting the size field in
-- 
2.34.1

[PATCH 08/18] video: kconfig: Set default FB size for Bochs

[Bin Meng]

Set up a default frame buffer size of 8MiB for Bochs for non-x86
architecturs as PCI is normally not enumerated before relocation
on these architectures.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 drivers/video/Kconfig | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 3f6b7d71b8..e32ce13fb6 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -65,7 +65,8 @@ config BACKLIGHT
 config VIDEO_PCI_DEFAULT_FB_SIZE
 	hex "Default framebuffer size to use if no drivers request it"
 	default 0x1000000 if X86
-	default 0 if !X86
+	default 0x800000 if !X86 && VIDEO_BOCHS
+	default 0 if !X86 && !VIDEO_BOCHS
 	help
 	  Generally, video drivers request the amount of memory they need for
 	  the frame buffer when they are bound, by setting the size field in
@@ -1037,7 +1038,8 @@ config SPL_SYS_WHITE_ON_BLACK
 config SPL_VIDEO_PCI_DEFAULT_FB_SIZE
 	hex "Default framebuffer size to use if no drivers request it at SPL"
 	default 0x1000000 if X86
-	default 0 if !X86
+	default 0x800000 if !X86 && VIDEO_BOCHS
+	default 0 if !X86 && !VIDEO_BOCHS
 	help
 	  Generally, video drivers request the amount of memory they need for
 	  the frame buffer when they are bound, by setting the size field in
-- 
2.34.1

[PATCH 09/18] video: bochs: Set the frame buffer size per configuration

[Bin Meng]

At present the uclass stored frame buffer size is set to a hard
coded value, but we can calculate the correct value based on what
is configured.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 drivers/video/bochs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/bochs.c b/drivers/video/bochs.c
index 5923ff81c6..022ea38d4c 100644
--- a/drivers/video/bochs.c
+++ b/drivers/video/bochs.c
@@ -101,8 +101,8 @@ static int bochs_video_bind(struct udevice *dev)
 {
 	struct video_uc_plat *uc_plat = dev_get_uclass_plat(dev);
 
-	/* Set the maximum supported resolution */
-	uc_plat->size = 2560 * 1600 * 4;
+	/* Set the frame buffer size per configuration */
+	uc_plat->size = xsize * ysize * 32 / 8;
 	log_debug("%s: Frame buffer size %x\n", __func__, uc_plat->size);
 
 	return 0;
-- 
2.34.1

[PATCH 10/18] riscv: qemu: Enable Bochs video support

[Bin Meng]

Enable video console using the emulated Bochs VGA card.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 board/emulation/qemu-riscv/Kconfig | 3 +++
 doc/board/emulation/qemu-riscv.rst | 5 +++++
 include/configs/qemu-riscv.h       | 5 +++++
 3 files changed, 13 insertions(+)

diff --git a/board/emulation/qemu-riscv/Kconfig b/board/emulation/qemu-riscv/Kconfig
index 6114e1b812..976c350e50 100644
--- a/board/emulation/qemu-riscv/Kconfig
+++ b/board/emulation/qemu-riscv/Kconfig
@@ -68,5 +68,8 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	imply MTD_NOR_FLASH
 	imply CFI_FLASH
 	imply OF_HAS_PRIOR_STAGE
+	imply VIDEO
+	imply VIDEO_BOCHS
+	imply SYS_WHITE_ON_BLACK
 
 endif
diff --git a/doc/board/emulation/qemu-riscv.rst b/doc/board/emulation/qemu-riscv.rst
index 509bf7c4a6..9d21f3270c 100644
--- a/doc/board/emulation/qemu-riscv.rst
+++ b/doc/board/emulation/qemu-riscv.rst
@@ -133,6 +133,11 @@ An attached disk can be emulated in RISC-V virt machine by adding::
 
 You will have to run 'scsi scan' to use it.
 
+A video console can be emulated in RISC-V virt machine by removing "-nographic"
+and adding::
+
+    -serial stdio -device VGA
+
 Running with KVM
 ----------------
 
diff --git a/include/configs/qemu-riscv.h b/include/configs/qemu-riscv.h
index f6d326bda0..7ec3d12ce1 100644
--- a/include/configs/qemu-riscv.h
+++ b/include/configs/qemu-riscv.h
@@ -17,6 +17,10 @@
 
 /* Environment options */
 
+#define CFG_STD_DEVICES_SETTINGS	"stdin=serial\0" \
+					"stdout=serial,vidconsole\0" \
+					"stderr=serial,vidconsole\0"
+
 #define BOOT_TARGET_DEVICES(func) \
 	func(QEMU, qemu, na) \
 	func(VIRTIO, virtio, 0) \
@@ -35,6 +39,7 @@
 	"qemu "
 
 #define CFG_EXTRA_ENV_SETTINGS \
+	CFG_STD_DEVICES_SETTINGS \
 	"fdt_high=0xffffffffffffffff\0" \
 	"initrd_high=0xffffffffffffffff\0" \
 	"kernel_addr_r=0x84000000\0" \
-- 
2.34.1

[PATCH 11/18] console: kconfig: Drop the redundant VIDEO dependency

[Bin Meng]

The VIDEO dependency is described twice in CONSOLE_MUX.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 common/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/common/Kconfig b/common/Kconfig
index 973482f075..d103bc6ddb 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -226,7 +226,7 @@ config CONSOLE_FLUSH_SUPPORT
 
 config CONSOLE_MUX
 	bool "Enable console multiplexing"
-	default y if VIDEO || VIDEO || LCD
+	default y if VIDEO || LCD
 	help
 	  This allows multiple devices to be used for each console 'file'.
 	  For example, stdout can be set to go to serial and video.
-- 
2.34.1

[PATCH 12/18] console: Make stdio_print_current_devices() static

[Bin Meng]

As it is only called in common/console.c

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 common/console.c    | 2 +-
 include/stdio_dev.h | 2 --
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/common/console.c b/common/console.c
index 71ad8efd6f..d0640ba05a 100644
--- a/common/console.c
+++ b/common/console.c
@@ -1010,7 +1010,7 @@ int console_init_f(void)
 	return 0;
 }
 
-void stdio_print_current_devices(void)
+static void stdio_print_current_devices(void)
 {
 	/* Print information */
 	puts("In:    ");
diff --git a/include/stdio_dev.h b/include/stdio_dev.h
index 77bf8a8970..7f18102052 100644
--- a/include/stdio_dev.h
+++ b/include/stdio_dev.h
@@ -84,8 +84,6 @@ int stdio_init_tables(void);
  */
 int stdio_add_devices(void);
 
-void stdio_print_current_devices(void);
-
 /**
  * stdio_deregister_dev() - deregister the device "devname".
  *
-- 
2.34.1

[PATCH 13/18] console: Refactor stdio_print_current_devices() a little bit

[Bin Meng]

In preparation to future changes, refactor this routine a little bit.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 common/console.c | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/common/console.c b/common/console.c
index d0640ba05a..af52897ec3 100644
--- a/common/console.c
+++ b/common/console.c
@@ -1012,27 +1012,27 @@ int console_init_f(void)
 
 static void stdio_print_current_devices(void)
 {
+	char *stdinname, *stdoutname, *stderrname;
+
+	stdinname = stdio_devices[stdin] ?
+		    stdio_devices[stdin]->name :
+		    "No input devices available!";
+	stdoutname = stdio_devices[stdout] ?
+		     stdio_devices[stdout]->name :
+		     "No output devices available!";
+	stderrname = stdio_devices[stderr] ?
+		     stdio_devices[stderr]->name :
+		     "No error devices available!";
+
 	/* Print information */
 	puts("In:    ");
-	if (stdio_devices[stdin] == NULL) {
-		puts("No input devices available!\n");
-	} else {
-		printf ("%s\n", stdio_devices[stdin]->name);
-	}
+	printf("%s\n", stdinname);
 
 	puts("Out:   ");
-	if (stdio_devices[stdout] == NULL) {
-		puts("No output devices available!\n");
-	} else {
-		printf ("%s\n", stdio_devices[stdout]->name);
-	}
+	printf("%s\n", stdoutname);
 
 	puts("Err:   ");
-	if (stdio_devices[stderr] == NULL) {
-		puts("No error devices available!\n");
-	} else {
-		printf ("%s\n", stdio_devices[stderr]->name);
-	}
+	printf("%s\n", stderrname);
 }
 
 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)
-- 
2.34.1

[PATCH 14/18] console: Print out complete stdio device list

[Bin Meng]

At present if both CONSOLE_MUX and SYS_CONSOLE_IS_IN_ENV are on,
during boot, the printed out stdio devices are incomplete, e.g.:
with "stdout=serial,vidconsole", only "vidconsole" is printed.

For such case, we can print out the stdio device name from the
environment variables.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 common/console.c | 30 +++++++++++++++++++++---------
 1 file changed, 21 insertions(+), 9 deletions(-)

diff --git a/common/console.c b/common/console.c
index af52897ec3..98c3ee6ca6 100644
--- a/common/console.c
+++ b/common/console.c
@@ -1014,15 +1014,27 @@ static void stdio_print_current_devices(void)
 {
 	char *stdinname, *stdoutname, *stderrname;
 
-	stdinname = stdio_devices[stdin] ?
-		    stdio_devices[stdin]->name :
-		    "No input devices available!";
-	stdoutname = stdio_devices[stdout] ?
-		     stdio_devices[stdout]->name :
-		     "No output devices available!";
-	stderrname = stdio_devices[stderr] ?
-		     stdio_devices[stderr]->name :
-		     "No error devices available!";
+	if (CONFIG_IS_ENABLED(CONSOLE_MUX) &&
+	    CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)) {
+		/* stdin stdout and stderr are in environment */
+		stdinname  = env_get("stdin");
+		stdoutname = env_get("stdout");
+		stderrname = env_get("stderr");
+
+		stdinname = stdinname ? : "No input devices available!";
+		stdoutname = stdoutname ? : "No output devices available!";
+		stderrname = stderrname ? : "No error devices available!";
+	} else {
+		stdinname = stdio_devices[stdin] ?
+			stdio_devices[stdin]->name :
+			"No input devices available!";
+		stdoutname = stdio_devices[stdout] ?
+			stdio_devices[stdout]->name :
+			"No output devices available!";
+		stderrname = stdio_devices[stderr] ?
+			stdio_devices[stderr]->name :
+			"No error devices available!";
+	}
 
 	/* Print information */
 	puts("In:    ");
-- 
2.34.1

[PATCH 15/18] riscv: qemu: Enable PRE_CONSOLE_BUFFER

[Bin Meng]

By default the video console only outputs messages after it's ready.
Messages before that won't show on the video console, but U-Boot has
an option to buffer the console messages before it's ready.

Enable this support, and carefully select an address for the buffer.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 board/emulation/qemu-riscv/Kconfig | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/board/emulation/qemu-riscv/Kconfig b/board/emulation/qemu-riscv/Kconfig
index 976c350e50..7220c55350 100644
--- a/board/emulation/qemu-riscv/Kconfig
+++ b/board/emulation/qemu-riscv/Kconfig
@@ -25,6 +25,10 @@ config SPL_OPENSBI_LOAD_ADDR
 	hex
 	default 0x80100000
 
+config PRE_CON_BUF_ADDR
+	hex
+	default 0x81000000
+
 config BOARD_SPECIFIC_OPTIONS # dummy
 	def_bool y
 	select GENERIC_RISCV
@@ -71,5 +75,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	imply VIDEO
 	imply VIDEO_BOCHS
 	imply SYS_WHITE_ON_BLACK
+	imply PRE_CONSOLE_BUFFER
 
 endif
-- 
2.34.1

[PATCH 16/18] riscv: define a cache line size for the generic CPU

[Bin Meng]

From: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

The USB 3.0 driver xhci-mem.c requires CONFIG_SYS_CACHELINE_SIZE to be set.

Define the cache line size for QEMU on RISC-V to be 64 bytes.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Bin Meng <bmeng@tinylab.org>
Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 arch/riscv/cpu/generic/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/cpu/generic/Kconfig b/arch/riscv/cpu/generic/Kconfig
index 897765c3c6..2baba22992 100644
--- a/arch/riscv/cpu/generic/Kconfig
+++ b/arch/riscv/cpu/generic/Kconfig
@@ -6,6 +6,7 @@ config GENERIC_RISCV
 	bool
 	select BINMAN if SPL
 	select ARCH_EARLY_INIT_R
+	select SYS_CACHE_SHIFT_6
 	imply CPU
 	imply CPU_RISCV
 	imply RISCV_TIMER if (RISCV_SMODE || SPL_RISCV_SMODE)
-- 
2.34.1

[PATCH 17/18] riscv: qemu: Remove out-of-date "riscv, kernel-start" handling

[Bin Meng]

Commit 66ffe57 ("riscv: qemu: detect and boot the kernel passed by QEMU")
added some logic to handle "riscv,kernel-start" in DT and stored the
address to an environment variable kernel_start.

However this "riscv,kernel-start" has never been an upstream DT binding.
The upstream QEMU never generates such a DT either. Presumably U-Boot
development was based on a downstream QEMU fork.

Now we drop all codes in commit 66ffe57, except that BOARD_LATE_INIT
is kept for later use.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
---

 board/emulation/qemu-riscv/qemu-riscv.c | 24 ------------------------
 include/configs/qemu-riscv.h            | 10 ----------
 2 files changed, 34 deletions(-)

diff --git a/board/emulation/qemu-riscv/qemu-riscv.c b/board/emulation/qemu-riscv/qemu-riscv.c
index ae3b7a3295..f39f3be366 100644
--- a/board/emulation/qemu-riscv/qemu-riscv.c
+++ b/board/emulation/qemu-riscv/qemu-riscv.c
@@ -41,30 +41,6 @@ int board_init(void)
 
 int board_late_init(void)
 {
-	ulong kernel_start;
-	ofnode chosen_node;
-	int ret;
-
-	chosen_node = ofnode_path("/chosen");
-	if (!ofnode_valid(chosen_node)) {
-		debug("No chosen node found, can't get kernel start address\n");
-		return 0;
-	}
-
-#ifdef CONFIG_ARCH_RV64I
-	ret = ofnode_read_u64(chosen_node, "riscv,kernel-start",
-			      (u64 *)&kernel_start);
-#else
-	ret = ofnode_read_u32(chosen_node, "riscv,kernel-start",
-			      (u32 *)&kernel_start);
-#endif
-	if (ret) {
-		debug("Can't find kernel start address in device tree\n");
-		return 0;
-	}
-
-	env_set_hex("kernel_start", kernel_start);
-
 	return 0;
 }
 
diff --git a/include/configs/qemu-riscv.h b/include/configs/qemu-riscv.h
index 7ec3d12ce1..d5146e70f7 100644
--- a/include/configs/qemu-riscv.h
+++ b/include/configs/qemu-riscv.h
@@ -22,22 +22,12 @@
 					"stderr=serial,vidconsole\0"
 
 #define BOOT_TARGET_DEVICES(func) \
-	func(QEMU, qemu, na) \
 	func(VIRTIO, virtio, 0) \
 	func(SCSI, scsi, 0) \
 	func(DHCP, dhcp, na)
 
 #include <config_distro_bootcmd.h>
 
-#define BOOTENV_DEV_QEMU(devtypeu, devtypel, instance) \
-	"bootcmd_qemu=" \
-		"if env exists kernel_start; then " \
-			"bootm ${kernel_start} - ${fdtcontroladdr};" \
-		"fi;\0"
-
-#define BOOTENV_DEV_NAME_QEMU(devtypeu, devtypel, instance) \
-	"qemu "
-
 #define CFG_EXTRA_ENV_SETTINGS \
 	CFG_STD_DEVICES_SETTINGS \
 	"fdt_high=0xffffffffffffffff\0" \
-- 
2.34.1

[PATCH 18/18] riscv: qemu: Enable usb keyboard as an input device

[Bin Meng]

This brings PCI xHCI support to QEMU RISC-V and uses a usb keyboard
as one of the input devices.

Signed-off-by: Bin Meng <bmeng@tinylab.org>

---

 board/emulation/qemu-riscv/Kconfig      | 5 +++++
 board/emulation/qemu-riscv/qemu-riscv.c | 5 +++++
 doc/board/emulation/qemu-riscv.rst      | 5 +++++
 include/configs/qemu-riscv.h            | 2 +-
 4 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/board/emulation/qemu-riscv/Kconfig b/board/emulation/qemu-riscv/Kconfig
index 7220c55350..b503578d27 100644
--- a/board/emulation/qemu-riscv/Kconfig
+++ b/board/emulation/qemu-riscv/Kconfig
@@ -76,5 +76,10 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	imply VIDEO_BOCHS
 	imply SYS_WHITE_ON_BLACK
 	imply PRE_CONSOLE_BUFFER
+	imply USB
+	imply USB_XHCI_HCD
+	imply USB_XHCI_PCI
+	imply USB_KEYBOARD
+	imply CMD_USB
 
 endif
diff --git a/board/emulation/qemu-riscv/qemu-riscv.c b/board/emulation/qemu-riscv/qemu-riscv.c
index f39f3be366..181abbbf97 100644
--- a/board/emulation/qemu-riscv/qemu-riscv.c
+++ b/board/emulation/qemu-riscv/qemu-riscv.c
@@ -12,6 +12,7 @@
 #include <log.h>
 #include <spl.h>
 #include <init.h>
+#include <usb.h>
 #include <virtio_types.h>
 #include <virtio.h>
 
@@ -41,6 +42,10 @@ int board_init(void)
 
 int board_late_init(void)
 {
+	/* start usb so that usb keyboard can be used as input device */
+	if (CONFIG_IS_ENABLED(USB_KEYBOARD))
+		usb_init();
+
 	return 0;
 }
 
diff --git a/doc/board/emulation/qemu-riscv.rst b/doc/board/emulation/qemu-riscv.rst
index 9d21f3270c..61137bcbf1 100644
--- a/doc/board/emulation/qemu-riscv.rst
+++ b/doc/board/emulation/qemu-riscv.rst
@@ -138,6 +138,11 @@ and adding::
 
     -serial stdio -device VGA
 
+In addition, a usb keyboard can be attached to an emulated xHCI controller in
+RISC-V virt machine as an option of input devices by adding::
+
+    -device qemu-xhci,id=xhci -device usb-kbd,bus=xhci.0
+
 Running with KVM
 ----------------
 
diff --git a/include/configs/qemu-riscv.h b/include/configs/qemu-riscv.h
index d5146e70f7..584559cfa3 100644
--- a/include/configs/qemu-riscv.h
+++ b/include/configs/qemu-riscv.h
@@ -17,7 +17,7 @@
 
 /* Environment options */
 
-#define CFG_STD_DEVICES_SETTINGS	"stdin=serial\0" \
+#define CFG_STD_DEVICES_SETTINGS	"stdin=serial,usbkbd\0" \
 					"stdout=serial,vidconsole\0" \
 					"stderr=serial,vidconsole\0"
 
-- 
2.34.1

Re: [PATCH 18/18] riscv: qemu: Enable usb keyboard as an input device

[Heinrich Schuchardt]

Am 23. Juli 2023 06:40:41 MESZ schrieb Bin Meng <bmeng@tinylab.org>:
>This brings PCI xHCI support to QEMU RISC-V and uses a usb keyboard
>as one of the input devices.
>
>Signed-off-by: Bin Meng <bmeng@tinylab.org>
>
>---
>
> board/emulation/qemu-riscv/Kconfig      | 5 +++++
> board/emulation/qemu-riscv/qemu-riscv.c | 5 +++++
> doc/board/emulation/qemu-riscv.rst      | 5 +++++
> include/configs/qemu-riscv.h            | 2 +-
> 4 files changed, 16 insertions(+), 1 deletion(-)
>
>diff --git a/board/emulation/qemu-riscv/Kconfig b/board/emulation/qemu-riscv/Kconfig
>index 7220c55350..b503578d27 100644
>--- a/board/emulation/qemu-riscv/Kconfig
>+++ b/board/emulation/qemu-riscv/Kconfig
>@@ -76,5 +76,10 @@ config BOARD_SPECIFIC_OPTIONS # dummy
> 	imply VIDEO_BOCHS
> 	imply SYS_WHITE_ON_BLACK
> 	imply PRE_CONSOLE_BUFFER
>+	imply USB
>+	imply USB_XHCI_HCD
>+	imply USB_XHCI_PCI

QEMU could alternatively use EHCI or OHCI for the keyboard. Does enabling XHCI add support for these too?

Best regards

Heinrich 

>+	imply USB_KEYBOARD
>+	imply CMD_USB
> 
> endif
>diff --git a/board/emulation/qemu-riscv/qemu-riscv.c b/board/emulation/qemu-riscv/qemu-riscv.c
>index f39f3be366..181abbbf97 100644
>--- a/board/emulation/qemu-riscv/qemu-riscv.c
>+++ b/board/emulation/qemu-riscv/qemu-riscv.c
>@@ -12,6 +12,7 @@
> #include <log.h>
> #include <spl.h>
> #include <init.h>
>+#include <usb.h>
> #include <virtio_types.h>
> #include <virtio.h>
> 
>@@ -41,6 +42,10 @@ int board_init(void)
> 
> int board_late_init(void)
> {
>+	/* start usb so that usb keyboard can be used as input device */
>+	if (CONFIG_IS_ENABLED(USB_KEYBOARD))
>+		usb_init();
>+
> 	return 0;
> }
> 
>diff --git a/doc/board/emulation/qemu-riscv.rst b/doc/board/emulation/qemu-riscv.rst
>index 9d21f3270c..61137bcbf1 100644
>--- a/doc/board/emulation/qemu-riscv.rst
>+++ b/doc/board/emulation/qemu-riscv.rst
>@@ -138,6 +138,11 @@ and adding::
> 
>     -serial stdio -device VGA
> 
>+In addition, a usb keyboard can be attached to an emulated xHCI controller in
>+RISC-V virt machine as an option of input devices by adding::
>+
>+    -device qemu-xhci,id=xhci -device usb-kbd,bus=xhci.0
>+
> Running with KVM
> ----------------
> 
>diff --git a/include/configs/qemu-riscv.h b/include/configs/qemu-riscv.h
>index d5146e70f7..584559cfa3 100644
>--- a/include/configs/qemu-riscv.h
>+++ b/include/configs/qemu-riscv.h
>@@ -17,7 +17,7 @@
> 
> /* Environment options */
> 
>-#define CFG_STD_DEVICES_SETTINGS	"stdin=serial\0" \
>+#define CFG_STD_DEVICES_SETTINGS	"stdin=serial,usbkbd\0" \
> 					"stdout=serial,vidconsole\0" \
> 					"stderr=serial,vidconsole\0"
> 

Re: [PATCH 14/18] console: Print out complete stdio device list

[Heinrich Schuchardt]

On 7/23/23 06:40, Bin Meng wrote:
> At present if both CONSOLE_MUX and SYS_CONSOLE_IS_IN_ENV are on,
> during boot, the printed out stdio devices are incomplete, e.g.:
> with "stdout=serial,vidconsole", only "vidconsole" is printed.
>
> For such case, we can print out the stdio device name from the
> environment variables.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>   common/console.c | 30 +++++++++++++++++++++---------
>   1 file changed, 21 insertions(+), 9 deletions(-)
>
> diff --git a/common/console.c b/common/console.c
> index af52897ec3..98c3ee6ca6 100644
> --- a/common/console.c
> +++ b/common/console.c
> @@ -1014,15 +1014,27 @@ static void stdio_print_current_devices(void)
>   {
>   	char *stdinname, *stdoutname, *stderrname;
>
> -	stdinname = stdio_devices[stdin] ?
> -		    stdio_devices[stdin]->name :
> -		    "No input devices available!";
> -	stdoutname = stdio_devices[stdout] ?
> -		     stdio_devices[stdout]->name :
> -		     "No output devices available!";
> -	stderrname = stdio_devices[stderr] ?
> -		     stdio_devices[stderr]->name :
> -		     "No error devices available!";
> +	if (CONFIG_IS_ENABLED(CONSOLE_MUX) &&
> +	    CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)) {
> +		/* stdin stdout and stderr are in environment */
> +		stdinname  = env_get("stdin");
> +		stdoutname = env_get("stdout");
> +		stderrname = env_get("stderr");
> +
> +		stdinname = stdinname ? : "No input devices available!";
> +		stdoutname = stdoutname ? : "No output devices available!";

This string will never be printed as you have no output device.

> +		stderrname = stderrname ? : "No error devices available!";
> +	} else {
> +		stdinname = stdio_devices[stdin] ?
> +			stdio_devices[stdin]->name :
> +			"No input devices available!";
> +		stdoutname = stdio_devices[stdout] ?
> +			stdio_devices[stdout]->name :
> +			"No output devices available!";

ditto

> +		stderrname = stdio_devices[stderr] ?
> +			stdio_devices[stderr]->name :
> +			"No error devices available!";
> +	}

do_coninfo() shows how to print all muxed devices irrespective of
SYS_CONSOLE_IS_IN_ENV.

Best regards

Heinrich

>
>   	/* Print information */
>   	puts("In:    ");

Re: [PATCH 13/18] console: Refactor stdio_print_current_devices() a little bit

[Heinrich Schuchardt]

On 7/23/23 06:40, Bin Meng wrote:
> In preparation to future changes, refactor this routine a little bit.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>   common/console.c | 30 +++++++++++++++---------------
>   1 file changed, 15 insertions(+), 15 deletions(-)
>
> diff --git a/common/console.c b/common/console.c
> index d0640ba05a..af52897ec3 100644
> --- a/common/console.c
> +++ b/common/console.c
> @@ -1012,27 +1012,27 @@ int console_init_f(void)
>
>   static void stdio_print_current_devices(void)
>   {
> +	char *stdinname, *stdoutname, *stderrname;
> +
> +	stdinname = stdio_devices[stdin] ?
> +		    stdio_devices[stdin]->name :
> +		    "No input devices available!";
> +	stdoutname = stdio_devices[stdout] ?
> +		     stdio_devices[stdout]->name :
> +		     "No output devices available!";

This string will never be printed as you have no output device.

Best regards

Heinrich

> +	stderrname = stdio_devices[stderr] ?
> +		     stdio_devices[stderr]->name :
> +		     "No error devices available!";
> +
>   	/* Print information */
>   	puts("In:    ");
> -	if (stdio_devices[stdin] == NULL) {
> -		puts("No input devices available!\n");
> -	} else {
> -		printf ("%s\n", stdio_devices[stdin]->name);
> -	}
> +	printf("%s\n", stdinname);
>
>   	puts("Out:   ");
> -	if (stdio_devices[stdout] == NULL) {
> -		puts("No output devices available!\n");
> -	} else {
> -		printf ("%s\n", stdio_devices[stdout]->name);
> -	}
> +	printf("%s\n", stdoutname);
>
>   	puts("Err:   ");
> -	if (stdio_devices[stderr] == NULL) {
> -		puts("No error devices available!\n");
> -	} else {
> -		printf ("%s\n", stdio_devices[stderr]->name);
> -	}
> +	printf("%s\n", stderrname);
>   }
>
>   #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)

Re: [PATCH 11/18] console: kconfig: Drop the redundant VIDEO dependency

[Heinrich Schuchardt]

On 7/23/23 06:40, Bin Meng wrote:
> The VIDEO dependency is described twice in CONSOLE_MUX.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>

Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

> ---
>
>   common/Kconfig | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/common/Kconfig b/common/Kconfig
> index 973482f075..d103bc6ddb 100644
> --- a/common/Kconfig
> +++ b/common/Kconfig
> @@ -226,7 +226,7 @@ config CONSOLE_FLUSH_SUPPORT
>
>   config CONSOLE_MUX
>   	bool "Enable console multiplexing"
> -	default y if VIDEO || VIDEO || LCD
> +	default y if VIDEO || LCD
>   	help
>   	  This allows multiple devices to be used for each console 'file'.
>   	  For example, stdout can be set to go to serial and video.

Re: [PATCH 18/18] riscv: qemu: Enable usb keyboard as an input device

[Mark Kettenis]

> From: Bin Meng <bmeng@tinylab.org>
> Date: Sun, 23 Jul 2023 12:40:41 +0800
> 
> This brings PCI xHCI support to QEMU RISC-V and uses a usb keyboard
> as one of the input devices.
> 
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> 
> ---
> 
>  board/emulation/qemu-riscv/Kconfig      | 5 +++++
>  board/emulation/qemu-riscv/qemu-riscv.c | 5 +++++
>  doc/board/emulation/qemu-riscv.rst      | 5 +++++
>  include/configs/qemu-riscv.h            | 2 +-
>  4 files changed, 16 insertions(+), 1 deletion(-)
> 
> diff --git a/board/emulation/qemu-riscv/Kconfig b/board/emulation/qemu-riscv/Kconfig
> index 7220c55350..b503578d27 100644
> --- a/board/emulation/qemu-riscv/Kconfig
> +++ b/board/emulation/qemu-riscv/Kconfig
> @@ -76,5 +76,10 @@ config BOARD_SPECIFIC_OPTIONS # dummy
>  	imply VIDEO_BOCHS
>  	imply SYS_WHITE_ON_BLACK
>  	imply PRE_CONSOLE_BUFFER
> +	imply USB
> +	imply USB_XHCI_HCD
> +	imply USB_XHCI_PCI
> +	imply USB_KEYBOARD
> +	imply CMD_USB
>  
>  endif
> diff --git a/board/emulation/qemu-riscv/qemu-riscv.c b/board/emulation/qemu-riscv/qemu-riscv.c
> index f39f3be366..181abbbf97 100644
> --- a/board/emulation/qemu-riscv/qemu-riscv.c
> +++ b/board/emulation/qemu-riscv/qemu-riscv.c
> @@ -12,6 +12,7 @@
>  #include <log.h>
>  #include <spl.h>
>  #include <init.h>
> +#include <usb.h>
>  #include <virtio_types.h>
>  #include <virtio.h>
>  
> @@ -41,6 +42,10 @@ int board_init(void)
>  
>  int board_late_init(void)
>  {
> +	/* start usb so that usb keyboard can be used as input device */
> +	if (CONFIG_IS_ENABLED(USB_KEYBOARD))
> +		usb_init();
> +

This is typically handled by including "usb start" in CONFIG_PREBOOT,
which is done by boot/Kconfig.  Any reason why that doesn't work for
you?

>  	return 0;
>  }
>  
> diff --git a/doc/board/emulation/qemu-riscv.rst b/doc/board/emulation/qemu-riscv.rst
> index 9d21f3270c..61137bcbf1 100644
> --- a/doc/board/emulation/qemu-riscv.rst
> +++ b/doc/board/emulation/qemu-riscv.rst
> @@ -138,6 +138,11 @@ and adding::
>  
>      -serial stdio -device VGA
>  
> +In addition, a usb keyboard can be attached to an emulated xHCI controller in
> +RISC-V virt machine as an option of input devices by adding::
> +
> +    -device qemu-xhci,id=xhci -device usb-kbd,bus=xhci.0
> +
>  Running with KVM
>  ----------------
>  
> diff --git a/include/configs/qemu-riscv.h b/include/configs/qemu-riscv.h
> index d5146e70f7..584559cfa3 100644
> --- a/include/configs/qemu-riscv.h
> +++ b/include/configs/qemu-riscv.h
> @@ -17,7 +17,7 @@
>  
>  /* Environment options */
>  
> -#define CFG_STD_DEVICES_SETTINGS	"stdin=serial\0" \
> +#define CFG_STD_DEVICES_SETTINGS	"stdin=serial,usbkbd\0" \
>  					"stdout=serial,vidconsole\0" \
>  					"stderr=serial,vidconsole\0"
>  
> -- 
> 2.34.1
> 
> 

Re: [PATCH 18/18] riscv: qemu: Enable usb keyboard as an input device

[Heinrich Schuchardt]

Am 23. Juli 2023 10:38:00 MESZ schrieb Mark Kettenis <mark.kettenis@xs4all.nl>:
>> From: Bin Meng <bmeng@tinylab.org>
>> Date: Sun, 23 Jul 2023 12:40:41 +0800
>> 
>> This brings PCI xHCI support to QEMU RISC-V and uses a usb keyboard
>> as one of the input devices.
>> 
>> Signed-off-by: Bin Meng <bmeng@tinylab.org>
>> 
>> ---
>> 
>>  board/emulation/qemu-riscv/Kconfig      | 5 +++++
>>  board/emulation/qemu-riscv/qemu-riscv.c | 5 +++++
>>  doc/board/emulation/qemu-riscv.rst      | 5 +++++
>>  include/configs/qemu-riscv.h            | 2 +-
>>  4 files changed, 16 insertions(+), 1 deletion(-)
>> 
>> diff --git a/board/emulation/qemu-riscv/Kconfig b/board/emulation/qemu-riscv/Kconfig
>> index 7220c55350..b503578d27 100644
>> --- a/board/emulation/qemu-riscv/Kconfig
>> +++ b/board/emulation/qemu-riscv/Kconfig
>> @@ -76,5 +76,10 @@ config BOARD_SPECIFIC_OPTIONS # dummy
>>  	imply VIDEO_BOCHS
>>  	imply SYS_WHITE_ON_BLACK
>>  	imply PRE_CONSOLE_BUFFER
>> +	imply USB
>> +	imply USB_XHCI_HCD
>> +	imply USB_XHCI_PCI
>> +	imply USB_KEYBOARD
>> +	imply CMD_USB
>>  
>>  endif
>> diff --git a/board/emulation/qemu-riscv/qemu-riscv.c b/board/emulation/qemu-riscv/qemu-riscv.c
>> index f39f3be366..181abbbf97 100644
>> --- a/board/emulation/qemu-riscv/qemu-riscv.c
>> +++ b/board/emulation/qemu-riscv/qemu-riscv.c
>> @@ -12,6 +12,7 @@
>>  #include <log.h>
>>  #include <spl.h>
>>  #include <init.h>
>> +#include <usb.h>
>>  #include <virtio_types.h>
>>  #include <virtio.h>
>>  
>> @@ -41,6 +42,10 @@ int board_init(void)
>>  
>>  int board_late_init(void)
>>  {
>> +	/* start usb so that usb keyboard can be used as input device */
>> +	if (CONFIG_IS_ENABLED(USB_KEYBOARD))
>> +		usb_init();
>> +
>
>This is typically handled by including "usb start" in CONFIG_PREBOOT,
>which is done by boot/Kconfig.  Any reason why that doesn't work for
>you?

We run pci_init() in board_r.c. Why don't do the same for USB instead of the PREBOOT quirk?

Regards


Heinrich


>
>>  	return 0;
>>  }
>>  
>> diff --git a/doc/board/emulation/qemu-riscv.rst b/doc/board/emulation/qemu-riscv.rst
>> index 9d21f3270c..61137bcbf1 100644
>> --- a/doc/board/emulation/qemu-riscv.rst
>> +++ b/doc/board/emulation/qemu-riscv.rst
>> @@ -138,6 +138,11 @@ and adding::
>>  
>>      -serial stdio -device VGA
>>  
>> +In addition, a usb keyboard can be attached to an emulated xHCI controller in
>> +RISC-V virt machine as an option of input devices by adding::
>> +
>> +    -device qemu-xhci,id=xhci -device usb-kbd,bus=xhci.0
>> +
>>  Running with KVM
>>  ----------------
>>  
>> diff --git a/include/configs/qemu-riscv.h b/include/configs/qemu-riscv.h
>> index d5146e70f7..584559cfa3 100644
>> --- a/include/configs/qemu-riscv.h
>> +++ b/include/configs/qemu-riscv.h
>> @@ -17,7 +17,7 @@
>>  
>>  /* Environment options */
>>  
>> -#define CFG_STD_DEVICES_SETTINGS	"stdin=serial\0" \
>> +#define CFG_STD_DEVICES_SETTINGS	"stdin=serial,usbkbd\0" \
>>  					"stdout=serial,vidconsole\0" \
>>  					"stderr=serial,vidconsole\0"
>>  
>> -- 
>> 2.34.1
>> 
>> 

Re: [PATCH 18/18] riscv: qemu: Enable usb keyboard as an input device

[Mark Kettenis]

> Date: Sun, 23 Jul 2023 11:30:31 +0200
> From: Heinrich Schuchardt <xypron.glpk@gmx.de>
> 
> Am 23. Juli 2023 10:38:00 MESZ schrieb Mark Kettenis <mark.kettenis@xs4all.nl>:
> >> From: Bin Meng <bmeng@tinylab.org>
> >> Date: Sun, 23 Jul 2023 12:40:41 +0800
> >> 
> >> This brings PCI xHCI support to QEMU RISC-V and uses a usb keyboard
> >> as one of the input devices.
> >> 
> >> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> >> 
> >> ---
> >> 
> >>  board/emulation/qemu-riscv/Kconfig      | 5 +++++
> >>  board/emulation/qemu-riscv/qemu-riscv.c | 5 +++++
> >>  doc/board/emulation/qemu-riscv.rst      | 5 +++++
> >>  include/configs/qemu-riscv.h            | 2 +-
> >>  4 files changed, 16 insertions(+), 1 deletion(-)
> >> 
> >> diff --git a/board/emulation/qemu-riscv/Kconfig b/board/emulation/qemu-riscv/Kconfig
> >> index 7220c55350..b503578d27 100644
> >> --- a/board/emulation/qemu-riscv/Kconfig
> >> +++ b/board/emulation/qemu-riscv/Kconfig
> >> @@ -76,5 +76,10 @@ config BOARD_SPECIFIC_OPTIONS # dummy
> >>  	imply VIDEO_BOCHS
> >>  	imply SYS_WHITE_ON_BLACK
> >>  	imply PRE_CONSOLE_BUFFER
> >> +	imply USB
> >> +	imply USB_XHCI_HCD
> >> +	imply USB_XHCI_PCI
> >> +	imply USB_KEYBOARD
> >> +	imply CMD_USB
> >>  
> >>  endif
> >> diff --git a/board/emulation/qemu-riscv/qemu-riscv.c b/board/emulation/qemu-riscv/qemu-riscv.c
> >> index f39f3be366..181abbbf97 100644
> >> --- a/board/emulation/qemu-riscv/qemu-riscv.c
> >> +++ b/board/emulation/qemu-riscv/qemu-riscv.c
> >> @@ -12,6 +12,7 @@
> >>  #include <log.h>
> >>  #include <spl.h>
> >>  #include <init.h>
> >> +#include <usb.h>
> >>  #include <virtio_types.h>
> >>  #include <virtio.h>
> >>  
> >> @@ -41,6 +42,10 @@ int board_init(void)
> >>  
> >>  int board_late_init(void)
> >>  {
> >> +	/* start usb so that usb keyboard can be used as input device */
> >> +	if (CONFIG_IS_ENABLED(USB_KEYBOARD))
> >> +		usb_init();
> >> +
> >
> >This is typically handled by including "usb start" in CONFIG_PREBOOT,
> >which is done by boot/Kconfig.  Any reason why that doesn't work for
> >you?
> 
> We run pci_init() in board_r.c. Why don't do the same for USB
> instead of the PREBOOT quirk?

Well, yes, that was going to be my next question.  If using PREBOOT is
for some reason no longer the preferred way to do this, should there
be some other generic method to make sure the USB controllers are
started when a USB keyboard is configured as an input method.  Doing
something generic like this in board-specific code seems wrong to me.

Cheers,

Mark

> >
> >>  	return 0;
> >>  }
> >>  
> >> diff --git a/doc/board/emulation/qemu-riscv.rst b/doc/board/emulation/qemu-riscv.rst
> >> index 9d21f3270c..61137bcbf1 100644
> >> --- a/doc/board/emulation/qemu-riscv.rst
> >> +++ b/doc/board/emulation/qemu-riscv.rst
> >> @@ -138,6 +138,11 @@ and adding::
> >>  
> >>      -serial stdio -device VGA
> >>  
> >> +In addition, a usb keyboard can be attached to an emulated xHCI controller in
> >> +RISC-V virt machine as an option of input devices by adding::
> >> +
> >> +    -device qemu-xhci,id=xhci -device usb-kbd,bus=xhci.0
> >> +
> >>  Running with KVM
> >>  ----------------
> >>  
> >> diff --git a/include/configs/qemu-riscv.h b/include/configs/qemu-riscv.h
> >> index d5146e70f7..584559cfa3 100644
> >> --- a/include/configs/qemu-riscv.h
> >> +++ b/include/configs/qemu-riscv.h
> >> @@ -17,7 +17,7 @@
> >>  
> >>  /* Environment options */
> >>  
> >> -#define CFG_STD_DEVICES_SETTINGS	"stdin=serial\0" \
> >> +#define CFG_STD_DEVICES_SETTINGS	"stdin=serial,usbkbd\0" \
> >>  					"stdout=serial,vidconsole\0" \
> >>  					"stderr=serial,vidconsole\0"
> >>  
> >> -- 
> >> 2.34.1
> >> 
> >> 
> 

Re: [PATCH 18/18] riscv: qemu: Enable usb keyboard as an input device

[Bin Meng]

Hi Heinrich,

On Sun, Jul 23, 2023 at 2:11 PM Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
>
>
>
> Am 23. Juli 2023 06:40:41 MESZ schrieb Bin Meng <bmeng@tinylab.org>:
> >This brings PCI xHCI support to QEMU RISC-V and uses a usb keyboard
> >as one of the input devices.
> >
> >Signed-off-by: Bin Meng <bmeng@tinylab.org>
> >
> >---
> >
> > board/emulation/qemu-riscv/Kconfig      | 5 +++++
> > board/emulation/qemu-riscv/qemu-riscv.c | 5 +++++
> > doc/board/emulation/qemu-riscv.rst      | 5 +++++
> > include/configs/qemu-riscv.h            | 2 +-
> > 4 files changed, 16 insertions(+), 1 deletion(-)
> >
> >diff --git a/board/emulation/qemu-riscv/Kconfig b/board/emulation/qemu-riscv/Kconfig
> >index 7220c55350..b503578d27 100644
> >--- a/board/emulation/qemu-riscv/Kconfig
> >+++ b/board/emulation/qemu-riscv/Kconfig
> >@@ -76,5 +76,10 @@ config BOARD_SPECIFIC_OPTIONS # dummy
> >       imply VIDEO_BOCHS
> >       imply SYS_WHITE_ON_BLACK
> >       imply PRE_CONSOLE_BUFFER
> >+      imply USB
> >+      imply USB_XHCI_HCD
> >+      imply USB_XHCI_PCI
>
> QEMU could alternatively use EHCI or OHCI for the keyboard. Does enabling XHCI add support for these too?

No, EHCI or OHCI support is separate from xHCI. I don't think enabling
EHCI or OHCI *by default* brings a lot of value here as xHCI is the
latest and greatest and USB keyboard could work with xHCI without any
problem.

Regards,
Bin

Re: [PATCH 14/18] console: Print out complete stdio device list

[Bin Meng]

Hi Heinrich,

On Sun, Jul 23, 2023 at 2:38 PM Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
>
> On 7/23/23 06:40, Bin Meng wrote:
> > At present if both CONSOLE_MUX and SYS_CONSOLE_IS_IN_ENV are on,
> > during boot, the printed out stdio devices are incomplete, e.g.:
> > with "stdout=serial,vidconsole", only "vidconsole" is printed.
> >
> > For such case, we can print out the stdio device name from the
> > environment variables.
> >
> > Signed-off-by: Bin Meng <bmeng@tinylab.org>
> > ---
> >
> >   common/console.c | 30 +++++++++++++++++++++---------
> >   1 file changed, 21 insertions(+), 9 deletions(-)
> >
> > diff --git a/common/console.c b/common/console.c
> > index af52897ec3..98c3ee6ca6 100644
> > --- a/common/console.c
> > +++ b/common/console.c
> > @@ -1014,15 +1014,27 @@ static void stdio_print_current_devices(void)
> >   {
> >       char *stdinname, *stdoutname, *stderrname;
> >
> > -     stdinname = stdio_devices[stdin] ?
> > -                 stdio_devices[stdin]->name :
> > -                 "No input devices available!";
> > -     stdoutname = stdio_devices[stdout] ?
> > -                  stdio_devices[stdout]->name :
> > -                  "No output devices available!";
> > -     stderrname = stdio_devices[stderr] ?
> > -                  stdio_devices[stderr]->name :
> > -                  "No error devices available!";
> > +     if (CONFIG_IS_ENABLED(CONSOLE_MUX) &&
> > +         CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)) {
> > +             /* stdin stdout and stderr are in environment */
> > +             stdinname  = env_get("stdin");
> > +             stdoutname = env_get("stdout");
> > +             stderrname = env_get("stderr");
> > +
> > +             stdinname = stdinname ? : "No input devices available!";
> > +             stdoutname = stdoutname ? : "No output devices available!";
>
> This string will never be printed as you have no output device.

This logic follows what it was before. Yes, without a stdout device,
puts() or printf() is useless.

>
> > +             stderrname = stderrname ? : "No error devices available!";
> > +     } else {
> > +             stdinname = stdio_devices[stdin] ?
> > +                     stdio_devices[stdin]->name :
> > +                     "No input devices available!";
> > +             stdoutname = stdio_devices[stdout] ?
> > +                     stdio_devices[stdout]->name :
> > +                     "No output devices available!";
>
> ditto
>
> > +             stderrname = stdio_devices[stderr] ?
> > +                     stdio_devices[stderr]->name :
> > +                     "No error devices available!";
> > +     }
>
> do_coninfo() shows how to print all muxed devices irrespective of
> SYS_CONSOLE_IS_IN_ENV.

Are you suggesting we refactor the codes to follow the same logic used
in do_coninfo()?

Regards,
Bin

Re: [PATCH 14/18] console: Print out complete stdio device list

[Heinrich Schuchardt]

Am 23. Juli 2023 14:04:39 MESZ schrieb Bin Meng <bmeng.cn@gmail.com>:
>Hi Heinrich,
>
>On Sun, Jul 23, 2023 at 2:38 PM Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
>>
>> On 7/23/23 06:40, Bin Meng wrote:
>> > At present if both CONSOLE_MUX and SYS_CONSOLE_IS_IN_ENV are on,
>> > during boot, the printed out stdio devices are incomplete, e.g.:
>> > with "stdout=serial,vidconsole", only "vidconsole" is printed.
>> >
>> > For such case, we can print out the stdio device name from the
>> > environment variables.
>> >
>> > Signed-off-by: Bin Meng <bmeng@tinylab.org>
>> > ---
>> >
>> >   common/console.c | 30 +++++++++++++++++++++---------
>> >   1 file changed, 21 insertions(+), 9 deletions(-)
>> >
>> > diff --git a/common/console.c b/common/console.c
>> > index af52897ec3..98c3ee6ca6 100644
>> > --- a/common/console.c
>> > +++ b/common/console.c
>> > @@ -1014,15 +1014,27 @@ static void stdio_print_current_devices(void)
>> >   {
>> >       char *stdinname, *stdoutname, *stderrname;
>> >
>> > -     stdinname = stdio_devices[stdin] ?
>> > -                 stdio_devices[stdin]->name :
>> > -                 "No input devices available!";
>> > -     stdoutname = stdio_devices[stdout] ?
>> > -                  stdio_devices[stdout]->name :
>> > -                  "No output devices available!";
>> > -     stderrname = stdio_devices[stderr] ?
>> > -                  stdio_devices[stderr]->name :
>> > -                  "No error devices available!";
>> > +     if (CONFIG_IS_ENABLED(CONSOLE_MUX) &&
>> > +         CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)) {
>> > +             /* stdin stdout and stderr are in environment */
>> > +             stdinname  = env_get("stdin");
>> > +             stdoutname = env_get("stdout");
>> > +             stderrname = env_get("stderr");
>> > +
>> > +             stdinname = stdinname ? : "No input devices available!";
>> > +             stdoutname = stdoutname ? : "No output devices available!";
>>
>> This string will never be printed as you have no output device.
>
>This logic follows what it was before. Yes, without a stdout device,
>puts() or printf() is useless.
>
>>
>> > +             stderrname = stderrname ? : "No error devices available!";
>> > +     } else {
>> > +             stdinname = stdio_devices[stdin] ?
>> > +                     stdio_devices[stdin]->name :
>> > +                     "No input devices available!";
>> > +             stdoutname = stdio_devices[stdout] ?
>> > +                     stdio_devices[stdout]->name :
>> > +                     "No output devices available!";
>>
>> ditto
>>
>> > +             stderrname = stdio_devices[stderr] ?
>> > +                     stdio_devices[stderr]->name :
>> > +                     "No error devices available!";
>> > +     }
>>
>> do_coninfo() shows how to print all muxed devices irrespective of
>> SYS_CONSOLE_IS_IN_ENV.
>
>Are you suggesting we refactor the codes to follow the same logic used
>in do_coninfo()?

As the coninfo command is enabled on most devices, we could use a common output function to reduce code size.

Do we need this output at all if we hsve coninfo?

Regards

Heinrich


>
>Regards,
>Bin

Re: [PATCH 14/18] console: Print out complete stdio device list

[Bin Meng]

Hi Heinrich,

On Sun, Jul 23, 2023 at 8:48 PM Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
>
>
>
> Am 23. Juli 2023 14:04:39 MESZ schrieb Bin Meng <bmeng.cn@gmail.com>:
> >Hi Heinrich,
> >
> >On Sun, Jul 23, 2023 at 2:38 PM Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
> >>
> >> On 7/23/23 06:40, Bin Meng wrote:
> >> > At present if both CONSOLE_MUX and SYS_CONSOLE_IS_IN_ENV are on,
> >> > during boot, the printed out stdio devices are incomplete, e.g.:
> >> > with "stdout=serial,vidconsole", only "vidconsole" is printed.
> >> >
> >> > For such case, we can print out the stdio device name from the
> >> > environment variables.
> >> >
> >> > Signed-off-by: Bin Meng <bmeng@tinylab.org>
> >> > ---
> >> >
> >> >   common/console.c | 30 +++++++++++++++++++++---------
> >> >   1 file changed, 21 insertions(+), 9 deletions(-)
> >> >
> >> > diff --git a/common/console.c b/common/console.c
> >> > index af52897ec3..98c3ee6ca6 100644
> >> > --- a/common/console.c
> >> > +++ b/common/console.c
> >> > @@ -1014,15 +1014,27 @@ static void stdio_print_current_devices(void)
> >> >   {
> >> >       char *stdinname, *stdoutname, *stderrname;
> >> >
> >> > -     stdinname = stdio_devices[stdin] ?
> >> > -                 stdio_devices[stdin]->name :
> >> > -                 "No input devices available!";
> >> > -     stdoutname = stdio_devices[stdout] ?
> >> > -                  stdio_devices[stdout]->name :
> >> > -                  "No output devices available!";
> >> > -     stderrname = stdio_devices[stderr] ?
> >> > -                  stdio_devices[stderr]->name :
> >> > -                  "No error devices available!";
> >> > +     if (CONFIG_IS_ENABLED(CONSOLE_MUX) &&
> >> > +         CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)) {
> >> > +             /* stdin stdout and stderr are in environment */
> >> > +             stdinname  = env_get("stdin");
> >> > +             stdoutname = env_get("stdout");
> >> > +             stderrname = env_get("stderr");
> >> > +
> >> > +             stdinname = stdinname ? : "No input devices available!";
> >> > +             stdoutname = stdoutname ? : "No output devices available!";
> >>
> >> This string will never be printed as you have no output device.
> >
> >This logic follows what it was before. Yes, without a stdout device,
> >puts() or printf() is useless.
> >
> >>
> >> > +             stderrname = stderrname ? : "No error devices available!";
> >> > +     } else {
> >> > +             stdinname = stdio_devices[stdin] ?
> >> > +                     stdio_devices[stdin]->name :
> >> > +                     "No input devices available!";
> >> > +             stdoutname = stdio_devices[stdout] ?
> >> > +                     stdio_devices[stdout]->name :
> >> > +                     "No output devices available!";
> >>
> >> ditto
> >>
> >> > +             stderrname = stdio_devices[stderr] ?
> >> > +                     stdio_devices[stderr]->name :
> >> > +                     "No error devices available!";
> >> > +     }
> >>
> >> do_coninfo() shows how to print all muxed devices irrespective of
> >> SYS_CONSOLE_IS_IN_ENV.
> >
> >Are you suggesting we refactor the codes to follow the same logic used
> >in do_coninfo()?
>
> As the coninfo command is enabled on most devices, we could use a common output function to reduce code size.
>
> Do we need this output at all if we hsve coninfo?

I think so. U-Boot has been displaying the stdio devices for quite a
long time. The config option SYS_CONSOLE_INFO_QUIET was introduced for
any board who does not want this.

config SYS_CONSOLE_INFO_QUIET
    bool "Don't display the console devices on boot"
    help
      Normally U-Boot displays the current settings for stdout, stdin
      and stderr on boot when the post-relocation console is set up.
      Enable this option to suppress this output. It can be obtained by
      calling stdio_print_current_devices() from board code.

Tom, what's your idea?

Regards,
Bin

Re: [PATCH 09/18] video: bochs: Set the frame buffer size per configuration

[Simon Glass]

On Sat, 22 Jul 2023 at 22:41, Bin Meng <bmeng@tinylab.org> wrote:
>
> At present the uclass stored frame buffer size is set to a hard
> coded value, but we can calculate the correct value based on what
> is configured.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>  drivers/video/bochs.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>

Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>  # qemu-x86_64

Re: [PATCH 01/18] dm: video: Cosmetic style fix

[Simon Glass]

On Sat, 22 Jul 2023 at 22:41, Bin Meng <bmeng@tinylab.org> wrote:
>
> Some coding convention fixes for video_post_bind().
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>  drivers/video/video-uclass.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)

Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>  # qemu-x86_64

Re: [PATCH 02/18] video: bochs: Drop inclusion of <asm/mtrr.h>

[Simon Glass]

On Sat, 22 Jul 2023 at 22:41, Bin Meng <bmeng@tinylab.org> wrote:
>
> The driver does not call any MTRR APIs.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>  drivers/video/bochs.c | 1 -
>  1 file changed, 1 deletion(-)
>

Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>  # qemu-x86_64

Re: [PATCH 03/18] video: bochs: Drop the useless argument of bochs_vga_write()

[Simon Glass]

On Sat, 22 Jul 2023 at 22:41, Bin Meng <bmeng@tinylab.org> wrote:
>
> bochs_vga_write() takes 'index' as one argument, but never uses it.
>
> While we are here, use macros instead of magic numbers for the
> VGA IO port register name and value.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>  drivers/video/bochs.c | 7 ++++---
>  drivers/video/bochs.h | 5 ++++-
>  2 files changed, 8 insertions(+), 4 deletions(-)

Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>  # qemu-x86_64

Re: [PATCH 04/18] video: bochs: Avoid using IO instructions to access VGA IO port

[Simon Glass]

On Sat, 22 Jul 2023 at 22:41, Bin Meng <bmeng@tinylab.org> wrote:
>
> At present the driver uses IO instructions to access the legacy
> VGA IO ports, which unfortunately limits the driver to work only
> on x86. It turns out the IO instruction is not necessary as Bochs
> VGA card remaps the legacy VGA IO ports (0x3c0 -> 0x3df) to its
> memory mapped register space from offset 0x400.
>
> Update the driver to use MMIO access for VGA IO port.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>  drivers/video/bochs.c | 6 +++---
>  drivers/video/bochs.h | 4 +---
>  2 files changed, 4 insertions(+), 6 deletions(-)
>

Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>  # qemu-x86_64

Re: [PATCH 05/18] video: bochs: Remove the x86 dependency

[Simon Glass]

On Sat, 22 Jul 2023 at 22:41, Bin Meng <bmeng@tinylab.org> wrote:
>
> Now that the driver is legacy free, remove the x86 dependency so
> that it can be used on non-x86 architectures.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>  drivers/video/Kconfig | 1 -
>  1 file changed, 1 deletion(-)
>

Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>  # qemu-x86_64

Re: [PATCH 06/18] video: kconfig: Fix wrong text for the PCI default FB size

[Simon Glass]

On Sat, 22 Jul 2023 at 22:41, Bin Meng <bmeng@tinylab.org> wrote:
>
> There is an example in the VIDEO_PCI_DEFAULT_FB_SIZE help text to
> tell people how to calculate its value but the resolution given
> does not match the value. Fix it.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>  drivers/video/Kconfig | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Simon Glass <sjg@chromium.org>

Re: [PATCH 07/18] video: kconfig: Drop the superfluous dependency

[Simon Glass]

On Sat, 22 Jul 2023 at 22:41, Bin Meng <bmeng@tinylab.org> wrote:
>
> PCI is always selected by X86 architecture hence "X86 && PCI" does
> not make it better.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>  drivers/video/Kconfig | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)

Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>  # qemu-x86_64

Re: [PATCH 08/18] video: kconfig: Set default FB size for Bochs

[Simon Glass]

On Sat, 22 Jul 2023 at 22:41, Bin Meng <bmeng@tinylab.org> wrote:
>
> Set up a default frame buffer size of 8MiB for Bochs for non-x86
> architecturs as PCI is normally not enumerated before relocation
> on these architectures.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>  drivers/video/Kconfig | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)

Reviewed-by: Simon Glass <sjg@chromium.org>

Re: [PATCH 11/18] console: kconfig: Drop the redundant VIDEO dependency

[Simon Glass]

On Sun, 23 Jul 2023 at 00:39, Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
>
> On 7/23/23 06:40, Bin Meng wrote:
> > The VIDEO dependency is described twice in CONSOLE_MUX.
> >
> > Signed-off-by: Bin Meng <bmeng@tinylab.org>
>
> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
>
> > ---
> >
> >   common/Kconfig | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Simon Glass <sjg@chromium.org>

Re: [PATCH 12/18] console: Make stdio_print_current_devices() static

[Simon Glass]

On Sat, 22 Jul 2023 at 22:42, Bin Meng <bmeng@tinylab.org> wrote:
>
> As it is only called in common/console.c
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>  common/console.c    | 2 +-
>  include/stdio_dev.h | 2 --
>  2 files changed, 1 insertion(+), 3 deletions(-)
>

Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>  # qemu-x86_64

Re: [PATCH 14/18] console: Print out complete stdio device list

[Simon Glass]

On Sun, 23 Jul 2023 at 08:17, Bin Meng <bmeng.cn@gmail.com> wrote:
>
> Hi Heinrich,
>
> On Sun, Jul 23, 2023 at 8:48 PM Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
> >
> >
> >
> > Am 23. Juli 2023 14:04:39 MESZ schrieb Bin Meng <bmeng.cn@gmail.com>:
> > >Hi Heinrich,
> > >
> > >On Sun, Jul 23, 2023 at 2:38 PM Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
> > >>
> > >> On 7/23/23 06:40, Bin Meng wrote:
> > >> > At present if both CONSOLE_MUX and SYS_CONSOLE_IS_IN_ENV are on,
> > >> > during boot, the printed out stdio devices are incomplete, e.g.:
> > >> > with "stdout=serial,vidconsole", only "vidconsole" is printed.
> > >> >
> > >> > For such case, we can print out the stdio device name from the
> > >> > environment variables.
> > >> >
> > >> > Signed-off-by: Bin Meng <bmeng@tinylab.org>
> > >> > ---
> > >> >
> > >> >   common/console.c | 30 +++++++++++++++++++++---------
> > >> >   1 file changed, 21 insertions(+), 9 deletions(-)
> > >> >
> > >> > diff --git a/common/console.c b/common/console.c
> > >> > index af52897ec3..98c3ee6ca6 100644
> > >> > --- a/common/console.c
> > >> > +++ b/common/console.c
> > >> > @@ -1014,15 +1014,27 @@ static void stdio_print_current_devices(void)
> > >> >   {
> > >> >       char *stdinname, *stdoutname, *stderrname;
> > >> >
> > >> > -     stdinname = stdio_devices[stdin] ?
> > >> > -                 stdio_devices[stdin]->name :
> > >> > -                 "No input devices available!";
> > >> > -     stdoutname = stdio_devices[stdout] ?
> > >> > -                  stdio_devices[stdout]->name :
> > >> > -                  "No output devices available!";
> > >> > -     stderrname = stdio_devices[stderr] ?
> > >> > -                  stdio_devices[stderr]->name :
> > >> > -                  "No error devices available!";
> > >> > +     if (CONFIG_IS_ENABLED(CONSOLE_MUX) &&
> > >> > +         CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)) {
> > >> > +             /* stdin stdout and stderr are in environment */
> > >> > +             stdinname  = env_get("stdin");
> > >> > +             stdoutname = env_get("stdout");
> > >> > +             stderrname = env_get("stderr");
> > >> > +
> > >> > +             stdinname = stdinname ? : "No input devices available!";
> > >> > +             stdoutname = stdoutname ? : "No output devices available!";
> > >>
> > >> This string will never be printed as you have no output device.
> > >
> > >This logic follows what it was before. Yes, without a stdout device,
> > >puts() or printf() is useless.
> > >
> > >>
> > >> > +             stderrname = stderrname ? : "No error devices available!";
> > >> > +     } else {
> > >> > +             stdinname = stdio_devices[stdin] ?
> > >> > +                     stdio_devices[stdin]->name :
> > >> > +                     "No input devices available!";
> > >> > +             stdoutname = stdio_devices[stdout] ?
> > >> > +                     stdio_devices[stdout]->name :
> > >> > +                     "No output devices available!";
> > >>
> > >> ditto
> > >>
> > >> > +             stderrname = stdio_devices[stderr] ?
> > >> > +                     stdio_devices[stderr]->name :
> > >> > +                     "No error devices available!";
> > >> > +     }
> > >>
> > >> do_coninfo() shows how to print all muxed devices irrespective of
> > >> SYS_CONSOLE_IS_IN_ENV.
> > >
> > >Are you suggesting we refactor the codes to follow the same logic used
> > >in do_coninfo()?
> >
> > As the coninfo command is enabled on most devices, we could use a common output function to reduce code size.
> >
> > Do we need this output at all if we hsve coninfo?
>
> I think so. U-Boot has been displaying the stdio devices for quite a
> long time. The config option SYS_CONSOLE_INFO_QUIET was introduced for
> any board who does not want this.
>
> config SYS_CONSOLE_INFO_QUIET
>     bool "Don't display the console devices on boot"
>     help
>       Normally U-Boot displays the current settings for stdout, stdin
>       and stderr on boot when the post-relocation console is set up.
>       Enable this option to suppress this output. It can be obtained by
>       calling stdio_print_current_devices() from board code.
>
> Tom, what's your idea?

I agree that we should show it, since otherwise it is misleading.

Reviewed-by: Simon Glass <sjg@chromium.org>

Re: [PATCH 14/18] console: Print out complete stdio device list

[Tom Rini]

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On Sun, Jul 23, 2023 at 12:40:37PM +0800, Bin Meng wrote:

> At present if both CONSOLE_MUX and SYS_CONSOLE_IS_IN_ENV are on,
> during boot, the printed out stdio devices are incomplete, e.g.:
> with "stdout=serial,vidconsole", only "vidconsole" is printed.
> 
> For such case, we can print out the stdio device name from the
> environment variables.
> 
> Signed-off-by: Bin Meng <bmeng@tinylab.org>

This approach makes sense to me.

Reviewed-by: Tom Rini <trini@konsulko.com>

-- 
Tom

[-- Attachment #2: signature.asc --]
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Re: [PATCH 18/18] riscv: qemu: Enable usb keyboard as an input device

[Heinrich Schuchardt]

On 23.07.23 12:11, Mark Kettenis wrote:
>> Date: Sun, 23 Jul 2023 11:30:31 +0200
>> From: Heinrich Schuchardt <xypron.glpk@gmx.de>
>>
>> Am 23. Juli 2023 10:38:00 MESZ schrieb Mark Kettenis <mark.kettenis@xs4all.nl>:
>>>> From: Bin Meng <bmeng@tinylab.org>
>>>> Date: Sun, 23 Jul 2023 12:40:41 +0800
>>>>
>>>> This brings PCI xHCI support to QEMU RISC-V and uses a usb keyboard
>>>> as one of the input devices.
>>>>
>>>> Signed-off-by: Bin Meng <bmeng@tinylab.org>
>>>>
>>>> ---
>>>>
>>>>   board/emulation/qemu-riscv/Kconfig      | 5 +++++
>>>>   board/emulation/qemu-riscv/qemu-riscv.c | 5 +++++
>>>>   doc/board/emulation/qemu-riscv.rst      | 5 +++++
>>>>   include/configs/qemu-riscv.h            | 2 +-
>>>>   4 files changed, 16 insertions(+), 1 deletion(-)
>>>>
>>>> diff --git a/board/emulation/qemu-riscv/Kconfig b/board/emulation/qemu-riscv/Kconfig
>>>> index 7220c55350..b503578d27 100644
>>>> --- a/board/emulation/qemu-riscv/Kconfig
>>>> +++ b/board/emulation/qemu-riscv/Kconfig
>>>> @@ -76,5 +76,10 @@ config BOARD_SPECIFIC_OPTIONS # dummy
>>>>   	imply VIDEO_BOCHS
>>>>   	imply SYS_WHITE_ON_BLACK
>>>>   	imply PRE_CONSOLE_BUFFER
>>>> +	imply USB
>>>> +	imply USB_XHCI_HCD
>>>> +	imply USB_XHCI_PCI
>>>> +	imply USB_KEYBOARD
>>>> +	imply CMD_USB
>>>>
>>>>   endif
>>>> diff --git a/board/emulation/qemu-riscv/qemu-riscv.c b/board/emulation/qemu-riscv/qemu-riscv.c
>>>> index f39f3be366..181abbbf97 100644
>>>> --- a/board/emulation/qemu-riscv/qemu-riscv.c
>>>> +++ b/board/emulation/qemu-riscv/qemu-riscv.c
>>>> @@ -12,6 +12,7 @@
>>>>   #include <log.h>
>>>>   #include <spl.h>
>>>>   #include <init.h>
>>>> +#include <usb.h>
>>>>   #include <virtio_types.h>
>>>>   #include <virtio.h>
>>>>
>>>> @@ -41,6 +42,10 @@ int board_init(void)
>>>>
>>>>   int board_late_init(void)
>>>>   {
>>>> +	/* start usb so that usb keyboard can be used as input device */
>>>> +	if (CONFIG_IS_ENABLED(USB_KEYBOARD))
>>>> +		usb_init();
>>>> +
>>>
>>> This is typically handled by including "usb start" in CONFIG_PREBOOT,
>>> which is done by boot/Kconfig.  Any reason why that doesn't work for
>>> you?
>>
>> We run pci_init() in board_r.c. Why don't do the same for USB
>> instead of the PREBOOT quirk?
>
> Well, yes, that was going to be my next question.  If using PREBOOT is
> for some reason no longer the preferred way to do this, should there
> be some other generic method to make sure the USB controllers are
> started when a USB keyboard is configured as an input method.  Doing
> something generic like this in board-specific code seems wrong to me.
>
> Cheers,
>
> Mark

+CC Marek

>
>>>
>>>>   	return 0;
>>>>   }
>>>>
>>>> diff --git a/doc/board/emulation/qemu-riscv.rst b/doc/board/emulation/qemu-riscv.rst
>>>> index 9d21f3270c..61137bcbf1 100644
>>>> --- a/doc/board/emulation/qemu-riscv.rst
>>>> +++ b/doc/board/emulation/qemu-riscv.rst
>>>> @@ -138,6 +138,11 @@ and adding::
>>>>
>>>>       -serial stdio -device VGA
>>>>
>>>> +In addition, a usb keyboard can be attached to an emulated xHCI controller in
>>>> +RISC-V virt machine as an option of input devices by adding::
>>>> +
>>>> +    -device qemu-xhci,id=xhci -device usb-kbd,bus=xhci.0
>>>> +
>>>>   Running with KVM
>>>>   ----------------
>>>>
>>>> diff --git a/include/configs/qemu-riscv.h b/include/configs/qemu-riscv.h
>>>> index d5146e70f7..584559cfa3 100644
>>>> --- a/include/configs/qemu-riscv.h
>>>> +++ b/include/configs/qemu-riscv.h
>>>> @@ -17,7 +17,7 @@
>>>>
>>>>   /* Environment options */
>>>>
>>>> -#define CFG_STD_DEVICES_SETTINGS	"stdin=serial\0" \
>>>> +#define CFG_STD_DEVICES_SETTINGS	"stdin=serial,usbkbd\0" \
>>>>   					"stdout=serial,vidconsole\0" \
>>>>   					"stderr=serial,vidconsole\0"
>>>>
>>>> --
>>>> 2.34.1
>>>>
>>>>

Re: [PATCH 00/18] video: bochs: Remove the x86 limitation

[Bin Meng]

Hi Rick,

On Sun, Jul 23, 2023 at 12:40 PM Bin Meng <bmeng@tinylab.org> wrote:
>
> The Bochs VGA card emulated by QEMU does not enforce any architecture.
> It was first introduced on x86 and indeed the x86 IO instruction is
> used to access the legacy VGA IO ports, but that does not mean it has
> to be done like this.
>
> The first half of this series enhances the bochs video driver to
> remove the x86 limitation.
>
> The second half of this series enables bochs video as the output
> console for QEMU RISC-V, to prove that the bochs video driver can
> indeed work on a non-x86 architecture. To make it actually useful,
> enable a usb keyboard as well, otherwise we can't just type anything :-)
>
> This series is available at u-boot-x86/bochs for testing.
>
>
> Bin Meng (17):
>   dm: video: Cosmetic style fix
>   video: bochs: Drop inclusion of <asm/mtrr.h>
>   video: bochs: Drop the useless argument of bochs_vga_write()
>   video: bochs: Avoid using IO instructions to access VGA IO port
>   video: bochs: Remove the x86 dependency
>   video: kconfig: Fix wrong text for the PCI default FB size
>   video: kconfig: Drop the superfluous dependency
>   video: kconfig: Set default FB size for Bochs
>   video: bochs: Set the frame buffer size per configuration
>   riscv: qemu: Enable Bochs video support
>   console: kconfig: Drop the redundant VIDEO dependency
>   console: Make stdio_print_current_devices() static
>   console: Refactor stdio_print_current_devices() a little bit
>   console: Print out complete stdio device list
>   riscv: qemu: Enable PRE_CONSOLE_BUFFER
>   riscv: qemu: Remove out-of-date "riscv,kernel-start" handling
>   riscv: qemu: Enable usb keyboard as an input device

Would you please review patch 10, 15, 17, 18? Thanks!

Regards,
Bin

Re: [PATCH 18/18] riscv: qemu: Enable usb keyboard as an input device

[Rick Chen]

> From: U-Boot <u-boot-bounces@lists.denx.de> On Behalf Of Bin Meng
> Sent: Sunday, July 23, 2023 12:41 PM
> To: Simon Glass <sjg@chromium.org>; u-boot@lists.denx.de
> Cc: Bin Meng <bmeng.cn@gmail.com>; Heinrich Schuchardt <xypron.glpk@gmx.de>
> Subject: [PATCH 18/18] riscv: qemu: Enable usb keyboard as an input device
>
> This brings PCI xHCI support to QEMU RISC-V and uses a usb keyboard as one of the input devices.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
>
> ---
>
>  board/emulation/qemu-riscv/Kconfig      | 5 +++++
>  board/emulation/qemu-riscv/qemu-riscv.c | 5 +++++
>  doc/board/emulation/qemu-riscv.rst      | 5 +++++
>  include/configs/qemu-riscv.h            | 2 +-
>  4 files changed, 16 insertions(+), 1 deletion(-)

Reviewed-by: Rick Chen <rick@andestech.com>

Re: [PATCH 17/18] riscv: qemu: Remove out-of-date "riscv, kernel-start" handling

[Rick Chen]

> From: U-Boot <u-boot-bounces@lists.denx.de> On Behalf Of Bin Meng
> Sent: Sunday, July 23, 2023 12:41 PM
> To: Simon Glass <sjg@chromium.org>; u-boot@lists.denx.de
> Cc: Bin Meng <bmeng.cn@gmail.com>
> Subject: [PATCH 17/18] riscv: qemu: Remove out-of-date "riscv, kernel-start" handling
>
> Commit 66ffe57 ("riscv: qemu: detect and boot the kernel passed by QEMU") added some logic to handle "riscv,kernel-start" in DT and stored the address to an environment variable kernel_start.
>
> However this "riscv,kernel-start" has never been an upstream DT binding.
> The upstream QEMU never generates such a DT either. Presumably U-Boot development was based on a downstream QEMU fork.
>
> Now we drop all codes in commit 66ffe57, except that BOARD_LATE_INIT is kept for later use.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>  board/emulation/qemu-riscv/qemu-riscv.c | 24 ------------------------
>  include/configs/qemu-riscv.h            | 10 ----------
>  2 files changed, 34 deletions(-)

Reviewed-by: Rick Chen <rick@andestech.com>

Re: [PATCH 15/18] riscv: qemu: Enable PRE_CONSOLE_BUFFER

[Rick Chen]

> From: U-Boot <u-boot-bounces@lists.denx.de> On Behalf Of Bin Meng
> Sent: Sunday, July 23, 2023 12:41 PM
> To: Simon Glass <sjg@chromium.org>; u-boot@lists.denx.de
> Cc: Bin Meng <bmeng.cn@gmail.com>
> Subject: [PATCH 15/18] riscv: qemu: Enable PRE_CONSOLE_BUFFER
>
> By default the video console only outputs messages after it's ready.
> Messages before that won't show on the video console, but U-Boot has an option to buffer the console messages before it's ready.
>
> Enable this support, and carefully select an address for the buffer.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>  board/emulation/qemu-riscv/Kconfig | 5 +++++
>  1 file changed, 5 insertions(+)

Reviewed-by: Rick Chen <rick@andestech.com>

Re: [PATCH 10/18] riscv: qemu: Enable Bochs video support

[Simon Glass]

On Sat, 22 Jul 2023 at 22:41, Bin Meng <bmeng@tinylab.org> wrote:
>
> Enable video console using the emulated Bochs VGA card.
>
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
>
>  board/emulation/qemu-riscv/Kconfig | 3 +++
>  doc/board/emulation/qemu-riscv.rst | 5 +++++
>  include/configs/qemu-riscv.h       | 5 +++++
>  3 files changed, 13 insertions(+)

Reviewed-by: Simon Glass <sjg@chromium.org>

How about a series to move this over to txt environment?

Re: [PATCH 15/18] riscv: qemu: Enable PRE_CONSOLE_BUFFER

[Simon Glass]

On Tue, 25 Jul 2023 at 01:21, Rick Chen <rickchen36@gmail.com> wrote:
>
> > From: U-Boot <u-boot-bounces@lists.denx.de> On Behalf Of Bin Meng
> > Sent: Sunday, July 23, 2023 12:41 PM
> > To: Simon Glass <sjg@chromium.org>; u-boot@lists.denx.de
> > Cc: Bin Meng <bmeng.cn@gmail.com>
> > Subject: [PATCH 15/18] riscv: qemu: Enable PRE_CONSOLE_BUFFER
> >
> > By default the video console only outputs messages after it's ready.
> > Messages before that won't show on the video console, but U-Boot has an option to buffer the console messages before it's ready.
> >
> > Enable this support, and carefully select an address for the buffer.
> >
> > Signed-off-by: Bin Meng <bmeng@tinylab.org>
> > ---
> >
> >  board/emulation/qemu-riscv/Kconfig | 5 +++++
> >  1 file changed, 5 insertions(+)
>
> Reviewed-by: Rick Chen <rick@andestech.com>

Reviewed-by: Simon Glass <sjg@chromium.org>

Re: [PATCH 17/18] riscv: qemu: Remove out-of-date "riscv, kernel-start" handling

[Simon Glass]

On Tue, 25 Jul 2023 at 01:17, Rick Chen <rickchen36@gmail.com> wrote:
>
> > From: U-Boot <u-boot-bounces@lists.denx.de> On Behalf Of Bin Meng
> > Sent: Sunday, July 23, 2023 12:41 PM
> > To: Simon Glass <sjg@chromium.org>; u-boot@lists.denx.de
> > Cc: Bin Meng <bmeng.cn@gmail.com>
> > Subject: [PATCH 17/18] riscv: qemu: Remove out-of-date "riscv, kernel-start" handling
> >
> > Commit 66ffe57 ("riscv: qemu: detect and boot the kernel passed by QEMU") added some logic to handle "riscv,kernel-start" in DT and stored the address to an environment variable kernel_start.
> >
> > However this "riscv,kernel-start" has never been an upstream DT binding.
> > The upstream QEMU never generates such a DT either. Presumably U-Boot development was based on a downstream QEMU fork.
> >
> > Now we drop all codes in commit 66ffe57, except that BOARD_LATE_INIT is kept for later use.
> >
> > Signed-off-by: Bin Meng <bmeng@tinylab.org>
> > ---
> >
> >  board/emulation/qemu-riscv/qemu-riscv.c | 24 ------------------------
> >  include/configs/qemu-riscv.h            | 10 ----------
> >  2 files changed, 34 deletions(-)
>
> Reviewed-by: Rick Chen <rick@andestech.com>

Reviewed-by: Simon Glass <sjg@chromium.org>

Re: [PATCH 18/18] riscv: qemu: Enable usb keyboard as an input device

[Simon Glass]

On Tue, 25 Jul 2023 at 01:05, Rick Chen <rickchen36@gmail.com> wrote:
>
> > From: U-Boot <u-boot-bounces@lists.denx.de> On Behalf Of Bin Meng
> > Sent: Sunday, July 23, 2023 12:41 PM
> > To: Simon Glass <sjg@chromium.org>; u-boot@lists.denx.de
> > Cc: Bin Meng <bmeng.cn@gmail.com>; Heinrich Schuchardt <xypron.glpk@gmx.de>
> > Subject: [PATCH 18/18] riscv: qemu: Enable usb keyboard as an input device
> >
> > This brings PCI xHCI support to QEMU RISC-V and uses a usb keyboard as one of the input devices.
> >
> > Signed-off-by: Bin Meng <bmeng@tinylab.org>
> >
> > ---
> >
> >  board/emulation/qemu-riscv/Kconfig      | 5 +++++
> >  board/emulation/qemu-riscv/qemu-riscv.c | 5 +++++
> >  doc/board/emulation/qemu-riscv.rst      | 5 +++++
> >  include/configs/qemu-riscv.h            | 2 +-
> >  4 files changed, 16 insertions(+), 1 deletion(-)
>
> Reviewed-by: Rick Chen <rick@andestech.com>

Reviewed-by: Simon Glass <sjg@chromium.org>

Re: [PATCH 00/18] video: bochs: Remove the x86 limitation

[Bin Meng]

> On Sun, Jul 23, 2023 at 12:40 PM Bin Meng <bmeng@tinylab.org> wrote:
> >
> > The Bochs VGA card emulated by QEMU does not enforce any architecture.
> > It was first introduced on x86 and indeed the x86 IO instruction is
> > used to access the legacy VGA IO ports, but that does not mean it has
> > to be done like this.
> >
> > The first half of this series enhances the bochs video driver to
> > remove the x86 limitation.
> >
> > The second half of this series enables bochs video as the output
> > console for QEMU RISC-V, to prove that the bochs video driver can
> > indeed work on a non-x86 architecture. To make it actually useful,
> > enable a usb keyboard as well, otherwise we can't just type anything :-)
> >
> > This series is available at u-boot-x86/bochs for testing.
> >
> >
> > Bin Meng (17):
> >   dm: video: Cosmetic style fix
> >   video: bochs: Drop inclusion of <asm/mtrr.h>
> >   video: bochs: Drop the useless argument of bochs_vga_write()
> >   video: bochs: Avoid using IO instructions to access VGA IO port
> >   video: bochs: Remove the x86 dependency
> >   video: kconfig: Fix wrong text for the PCI default FB size
> >   video: kconfig: Drop the superfluous dependency
> >   video: kconfig: Set default FB size for Bochs
> >   video: bochs: Set the frame buffer size per configuration
> >   riscv: qemu: Enable Bochs video support
> >   console: kconfig: Drop the redundant VIDEO dependency
> >   console: Make stdio_print_current_devices() static
> >   console: Refactor stdio_print_current_devices() a little bit
> >   console: Print out complete stdio device list
> >   riscv: qemu: Enable PRE_CONSOLE_BUFFER
> >   riscv: qemu: Remove out-of-date "riscv,kernel-start" handling
> >   riscv: qemu: Enable usb keyboard as an input device
>

Looks the first half is assigned to Anatolij and the second half to Rick.

I guess the first half should go first.

Ping for apply?

Regards,
Bin

Re: [PATCH 01/18] dm: video: Cosmetic style fix

[Anatolij Gustschin]

On Sun, 23 Jul 2023 12:40:24 +0800
Bin Meng bmeng@tinylab.org wrote:

> Some coding convention fixes for video_post_bind().
> 
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
> 
>  drivers/video/video-uclass.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)

applied to u-boot-video/master, thanks!

--
Anatolij

Re: [PATCH 02/18] video: bochs: Drop inclusion of <asm/mtrr.h>

[Anatolij Gustschin]

On Sun, 23 Jul 2023 12:40:25 +0800
Bin Meng bmeng@tinylab.org wrote:

> The driver does not call any MTRR APIs.
> 
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
> 
>  drivers/video/bochs.c | 1 -
>  1 file changed, 1 deletion(-)

applied to u-boot-video/master, thanks!

--
Anatolij

Re: [PATCH 03/18] video: bochs: Drop the useless argument of bochs_vga_write()

[Anatolij Gustschin]

On Sun, 23 Jul 2023 12:40:26 +0800
Bin Meng bmeng@tinylab.org wrote:

> bochs_vga_write() takes 'index' as one argument, but never uses it.
> 
> While we are here, use macros instead of magic numbers for the
> VGA IO port register name and value.
> 
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
> 
>  drivers/video/bochs.c | 7 ++++---
>  drivers/video/bochs.h | 5 ++++-
>  2 files changed, 8 insertions(+), 4 deletions(-)

applied to u-boot-video/master, thanks!

--
Anatolij

Re: [PATCH 04/18] video: bochs: Avoid using IO instructions to access VGA IO port

[Anatolij Gustschin]

On Sun, 23 Jul 2023 12:40:27 +0800
Bin Meng bmeng@tinylab.org wrote:

> At present the driver uses IO instructions to access the legacy
> VGA IO ports, which unfortunately limits the driver to work only
> on x86. It turns out the IO instruction is not necessary as Bochs
> VGA card remaps the legacy VGA IO ports (0x3c0 -> 0x3df) to its
> memory mapped register space from offset 0x400.
> 
> Update the driver to use MMIO access for VGA IO port.
> 
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
> 
>  drivers/video/bochs.c | 6 +++---
>  drivers/video/bochs.h | 4 +---
>  2 files changed, 4 insertions(+), 6 deletions(-)

applied to u-boot-video/master, thanks!

--
Anatolij

Re: [PATCH 05/18] video: bochs: Remove the x86 dependency

[Anatolij Gustschin]

On Sun, 23 Jul 2023 12:40:28 +0800
Bin Meng bmeng@tinylab.org wrote:

> Now that the driver is legacy free, remove the x86 dependency so
> that it can be used on non-x86 architectures.
> 
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
> 
>  drivers/video/Kconfig | 1 -
>  1 file changed, 1 deletion(-)

applied to u-boot-video/master, thanks!

--
Anatolij

Re: [PATCH 06/18] video: kconfig: Fix wrong text for the PCI default FB size

[Anatolij Gustschin]

On Sun, 23 Jul 2023 12:40:29 +0800
Bin Meng bmeng@tinylab.org wrote:

> There is an example in the VIDEO_PCI_DEFAULT_FB_SIZE help text to
> tell people how to calculate its value but the resolution given
> does not match the value. Fix it.
> 
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
> 
>  drivers/video/Kconfig | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

applied to u-boot-video/master, thanks!

--
Anatolij

Re: [PATCH 07/18] video: kconfig: Drop the superfluous dependency

[Anatolij Gustschin]

On Sun, 23 Jul 2023 12:40:30 +0800
Bin Meng bmeng@tinylab.org wrote:

> PCI is always selected by X86 architecture hence "X86 && PCI" does
> not make it better.
> 
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
> 
>  drivers/video/Kconfig | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)

applied to u-boot-video/master, thanks!

--
Anatolij

Re: [PATCH 08/18] video: kconfig: Set default FB size for Bochs

[Anatolij Gustschin]

On Sun, 23 Jul 2023 12:40:31 +0800
Bin Meng bmeng@tinylab.org wrote:

> Set up a default frame buffer size of 8MiB for Bochs for non-x86
> architecturs as PCI is normally not enumerated before relocation
> on these architectures.
> 
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
> 
>  drivers/video/Kconfig | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)


applied to u-boot-video/master, thanks!

--
Anatolij

Re: [PATCH 09/18] video: bochs: Set the frame buffer size per configuration

[Anatolij Gustschin]

On Sun, 23 Jul 2023 12:40:32 +0800
Bin Meng bmeng@tinylab.org wrote:

> At present the uclass stored frame buffer size is set to a hard
> coded value, but we can calculate the correct value based on what
> is configured.
> 
> Signed-off-by: Bin Meng <bmeng@tinylab.org>
> ---
> 
>  drivers/video/bochs.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

applied to u-boot-video/master, thanks!

--
Anatolij

Re: [PATCH 00/18] video: bochs: Remove the x86 limitation

[Anatolij Gustschin]

Hi Bin,

On Mon, 31 Jul 2023 13:26:23 +0800
Bin Meng bmeng.cn@gmail.com wrote:
...
> Looks the first half is assigned to Anatolij and the second half to Rick.
> 
> I guess the first half should go first.
> 
> Ping for apply?

I've applied patches 1/18 to 9/18 now, a pull request is pending.

--
Anatolij

Re: [PATCH 00/18] video: bochs: Remove the x86 limitation

[Bin Meng]

On Tue, Aug 1, 2023 at 9:03 PM Anatolij Gustschin <agust@denx.de> wrote:
>
> Hi Bin,
>
> On Mon, 31 Jul 2023 13:26:23 +0800
> Bin Meng bmeng.cn@gmail.com wrote:
> ...
> > Looks the first half is assigned to Anatolij and the second half to Rick.
> >
> > I guess the first half should go first.
> >
> > Ping for apply?
>
> I've applied patches 1/18 to 9/18 now, a pull request is pending.
>

Thank you Anatolij.

Regards,
Bin