[PATCH 0/8] ARC: merge HAPS-HS with nSIM-HS configs

[PATCH 0/8] ARC: merge HAPS-HS with nSIM-HS configs

[Eugeniy Paltsev]

Starting from nSIM 2019.06 is possible to use DW UART
instead of ARC UART. That allows us to merge
"nsim_hs" with "haps_hs" and "nsim_hs_smp" with "haps_hs_smp"
with some minor changes.

We eliminate nsim_hs_defconfig and nsim_hs_smp_defconfig
and leave haps_hs_defconfig and haps_hs_smp_defconfig
which can be used on HAPS / nSIM / ZEBU / QEMU platforms
without additional changes in Linux kernel.

Also while I'm at it cleanup both HAPS and nSIM configurations
from obsolete/unused options.

Changes:
RFC -> v1:
 * update KBUILD_DEFCONFIG to use the haps defconfig instead of
   nSIM one
 * switch nsim_700 to dwuart

Eugeniy Paltsev (8):
  ARC: regenerate nSIM and HAPS defconfigs
  ARC: HAPS: cleanup defconfigs from unused IO-related options
  ARC: HAPS: use same UART configuration everywhere
  ARC: HAPS: add HIGHMEM memory zone to DTS
  ARC: HAPS: cleanup defconfigs from unused ETH drivers
  ARC: merge HAPS-HS with nSIM-HS configs
  ARC: nSIM_700: switch to DW UART usage
  ARC: nSIM_700: remove unused network options

 arch/arc/Makefile                      |  2 +-
 arch/arc/boot/dts/haps_hs.dts          | 15 +++---
 arch/arc/boot/dts/haps_hs_idu.dts      |  1 -
 arch/arc/boot/dts/nsim_700.dts         | 36 +++++---------
 arch/arc/boot/dts/nsim_hs.dts          | 67 --------------------------
 arch/arc/boot/dts/nsim_hs_idu.dts      | 65 -------------------------
 arch/arc/configs/haps_hs_defconfig     | 30 +++---------
 arch/arc/configs/haps_hs_smp_defconfig | 32 +++---------
 arch/arc/configs/nsim_700_defconfig    | 19 ++++----
 arch/arc/configs/nsim_hs_defconfig     | 60 -----------------------
 arch/arc/configs/nsim_hs_smp_defconfig | 58 ----------------------
 arch/arc/plat-sim/platform.c           |  1 -
 12 files changed, 44 insertions(+), 342 deletions(-)
 delete mode 100644 arch/arc/boot/dts/nsim_hs.dts
 delete mode 100644 arch/arc/boot/dts/nsim_hs_idu.dts
 delete mode 100644 arch/arc/configs/nsim_hs_defconfig
 delete mode 100644 arch/arc/configs/nsim_hs_smp_defconfig

-- 
2.21.0


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[PATCH 1/8] ARC: regenerate nSIM and HAPS defconfigs

[Eugeniy Paltsev]

No functional change intended.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
 arch/arc/configs/haps_hs_defconfig     | 10 ++--------
 arch/arc/configs/haps_hs_smp_defconfig | 12 +++---------
 arch/arc/configs/nsim_700_defconfig    |  7 ++-----
 arch/arc/configs/nsim_hs_defconfig     |  8 ++------
 arch/arc/configs/nsim_hs_smp_defconfig | 10 +++-------
 5 files changed, 12 insertions(+), 35 deletions(-)

diff --git a/arch/arc/configs/haps_hs_defconfig b/arch/arc/configs/haps_hs_defconfig
index 47ff8a97e42d..e22f40612089 100644
--- a/arch/arc/configs/haps_hs_defconfig
+++ b/arch/arc/configs/haps_hs_defconfig
@@ -4,6 +4,7 @@ CONFIG_POSIX_MQUEUE=y
 # CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_NO_HZ_IDLE=y
 CONFIG_HIGH_RES_TIMERS=y
+CONFIG_PREEMPT=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_NAMESPACES=y
@@ -15,13 +16,9 @@ CONFIG_EXPERT=y
 CONFIG_PERF_EVENTS=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_SLAB=y
+CONFIG_ARC_BUILTIN_DTB_NAME="haps_hs"
 CONFIG_MODULES=y
 # CONFIG_BLK_DEV_BSG is not set
-# CONFIG_IOSCHED_DEADLINE is not set
-# CONFIG_IOSCHED_CFQ is not set
-CONFIG_ISA_ARCV2=y
-CONFIG_ARC_BUILTIN_DTB_NAME="haps_hs"
-CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y
 CONFIG_PACKET=y
@@ -30,9 +27,6 @@ CONFIG_UNIX=y
 CONFIG_UNIX_DIAG=y
 CONFIG_NET_KEY=y
 CONFIG_INET=y
-# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-# CONFIG_INET_XFRM_MODE_BEET is not set
 # CONFIG_IPV6 is not set
 # CONFIG_WIRELESS is not set
 CONFIG_DEVTMPFS=y
diff --git a/arch/arc/configs/haps_hs_smp_defconfig b/arch/arc/configs/haps_hs_smp_defconfig
index 9685fd5f57a4..ff4fcd7640a4 100644
--- a/arch/arc/configs/haps_hs_smp_defconfig
+++ b/arch/arc/configs/haps_hs_smp_defconfig
@@ -4,6 +4,7 @@ CONFIG_POSIX_MQUEUE=y
 # CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_NO_HZ_IDLE=y
 CONFIG_HIGH_RES_TIMERS=y
+CONFIG_PREEMPT=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_NAMESPACES=y
@@ -16,15 +17,11 @@ CONFIG_PERF_EVENTS=y
 # CONFIG_VM_EVENT_COUNTERS is not set
 # CONFIG_COMPAT_BRK is not set
 CONFIG_SLAB=y
+CONFIG_SMP=y
+CONFIG_ARC_BUILTIN_DTB_NAME="haps_hs_idu"
 CONFIG_KPROBES=y
 CONFIG_MODULES=y
 # CONFIG_BLK_DEV_BSG is not set
-# CONFIG_IOSCHED_DEADLINE is not set
-# CONFIG_IOSCHED_CFQ is not set
-CONFIG_ISA_ARCV2=y
-CONFIG_SMP=y
-CONFIG_ARC_BUILTIN_DTB_NAME="haps_hs_idu"
-CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y
 CONFIG_PACKET=y
@@ -33,9 +30,6 @@ CONFIG_UNIX=y
 CONFIG_UNIX_DIAG=y
 CONFIG_NET_KEY=y
 CONFIG_INET=y
-# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-# CONFIG_INET_XFRM_MODE_BEET is not set
 # CONFIG_IPV6 is not set
 # CONFIG_WIRELESS is not set
 CONFIG_DEVTMPFS=y
diff --git a/arch/arc/configs/nsim_700_defconfig b/arch/arc/configs/nsim_700_defconfig
index 2b9b11474640..9b2653b0b349 100644
--- a/arch/arc/configs/nsim_700_defconfig
+++ b/arch/arc/configs/nsim_700_defconfig
@@ -4,6 +4,7 @@ CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
 # CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_HIGH_RES_TIMERS=y
+CONFIG_PREEMPT=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_NAMESPACES=y
@@ -17,13 +18,10 @@ CONFIG_PERF_EVENTS=y
 # CONFIG_SLUB_DEBUG is not set
 # CONFIG_COMPAT_BRK is not set
 CONFIG_ISA_ARCOMPACT=y
+CONFIG_ARC_BUILTIN_DTB_NAME="nsim_700"
 CONFIG_KPROBES=y
 CONFIG_MODULES=y
 # CONFIG_BLK_DEV_BSG is not set
-# CONFIG_IOSCHED_DEADLINE is not set
-# CONFIG_IOSCHED_CFQ is not set
-CONFIG_ARC_BUILTIN_DTB_NAME="nsim_700"
-CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y
 CONFIG_PACKET=y
@@ -39,7 +37,6 @@ CONFIG_DEVTMPFS=y
 CONFIG_NETDEVICES=y
 CONFIG_ARC_EMAC=y
 CONFIG_LXT_PHY=y
-# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
 # CONFIG_INPUT_KEYBOARD is not set
 # CONFIG_INPUT_MOUSE is not set
 # CONFIG_SERIO is not set
diff --git a/arch/arc/configs/nsim_hs_defconfig b/arch/arc/configs/nsim_hs_defconfig
index bab3dd255841..60ad81769565 100644
--- a/arch/arc/configs/nsim_hs_defconfig
+++ b/arch/arc/configs/nsim_hs_defconfig
@@ -4,6 +4,7 @@ CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
 # CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_HIGH_RES_TIMERS=y
+CONFIG_PREEMPT=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_NAMESPACES=y
@@ -16,17 +17,13 @@ CONFIG_EMBEDDED=y
 CONFIG_PERF_EVENTS=y
 # CONFIG_SLUB_DEBUG is not set
 # CONFIG_COMPAT_BRK is not set
+CONFIG_ARC_BUILTIN_DTB_NAME="nsim_hs"
 CONFIG_KPROBES=y
 CONFIG_MODULES=y
 CONFIG_MODULE_FORCE_LOAD=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_MODULE_FORCE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
-# CONFIG_IOSCHED_DEADLINE is not set
-# CONFIG_IOSCHED_CFQ is not set
-CONFIG_ISA_ARCV2=y
-CONFIG_ARC_BUILTIN_DTB_NAME="nsim_hs"
-CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y
 CONFIG_PACKET=y
@@ -39,7 +36,6 @@ CONFIG_DEVTMPFS=y
 # CONFIG_STANDALONE is not set
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
 # CONFIG_BLK_DEV is not set
-# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
 # CONFIG_INPUT_KEYBOARD is not set
 # CONFIG_INPUT_MOUSE is not set
 # CONFIG_SERIO is not set
diff --git a/arch/arc/configs/nsim_hs_smp_defconfig b/arch/arc/configs/nsim_hs_smp_defconfig
index 90d2d50fb8dc..c7a29adfc147 100644
--- a/arch/arc/configs/nsim_hs_smp_defconfig
+++ b/arch/arc/configs/nsim_hs_smp_defconfig
@@ -2,6 +2,7 @@
 # CONFIG_SWAP is not set
 # CONFIG_CROSS_MEMORY_ATTACH is not set
 CONFIG_HIGH_RES_TIMERS=y
+CONFIG_PREEMPT=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_NAMESPACES=y
@@ -14,18 +15,14 @@ CONFIG_EMBEDDED=y
 CONFIG_PERF_EVENTS=y
 # CONFIG_SLUB_DEBUG is not set
 # CONFIG_COMPAT_BRK is not set
+CONFIG_SMP=y
+CONFIG_ARC_BUILTIN_DTB_NAME="nsim_hs_idu"
 CONFIG_KPROBES=y
 CONFIG_MODULES=y
 CONFIG_MODULE_FORCE_LOAD=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_MODULE_FORCE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
-# CONFIG_IOSCHED_DEADLINE is not set
-# CONFIG_IOSCHED_CFQ is not set
-CONFIG_ISA_ARCV2=y
-CONFIG_SMP=y
-CONFIG_ARC_BUILTIN_DTB_NAME="nsim_hs_idu"
-CONFIG_PREEMPT=y
 # CONFIG_COMPACTION is not set
 CONFIG_NET=y
 CONFIG_PACKET=y
@@ -38,7 +35,6 @@ CONFIG_DEVTMPFS=y
 # CONFIG_STANDALONE is not set
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
 # CONFIG_BLK_DEV is not set
-# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
 # CONFIG_INPUT_KEYBOARD is not set
 # CONFIG_INPUT_MOUSE is not set
 # CONFIG_SERIO is not set
-- 
2.21.0


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[PATCH 2/8] ARC: HAPS: cleanup defconfigs from unused IO-related options

[Eugeniy Paltsev]

We don't have any peripherals on HAPS which may require FB or
input_devices support. So get rid of them.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
 arch/arc/configs/haps_hs_defconfig     | 9 +++------
 arch/arc/configs/haps_hs_smp_defconfig | 9 +++------
 2 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/arch/arc/configs/haps_hs_defconfig b/arch/arc/configs/haps_hs_defconfig
index e22f40612089..33b7a402b6bd 100644
--- a/arch/arc/configs/haps_hs_defconfig
+++ b/arch/arc/configs/haps_hs_defconfig
@@ -48,9 +48,9 @@ CONFIG_VIRTIO_NET=y
 # CONFIG_NET_VENDOR_WIZNET is not set
 # CONFIG_WLAN is not set
 CONFIG_INPUT_EVDEV=y
-CONFIG_MOUSE_PS2_TOUCHKIT=y
-# CONFIG_SERIO_SERPORT is not set
-CONFIG_SERIO_ARC_PS2=y
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_SERIO is not set
 # CONFIG_LEGACY_PTYS is not set
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
@@ -60,9 +60,6 @@ CONFIG_SERIAL_8250_DW=y
 CONFIG_SERIAL_OF_PLATFORM=y
 # CONFIG_HW_RANDOM is not set
 # CONFIG_HWMON is not set
-CONFIG_FB=y
-CONFIG_FRAMEBUFFER_CONSOLE=y
-CONFIG_LOGO=y
 # CONFIG_HID is not set
 # CONFIG_USB_SUPPORT is not set
 CONFIG_VIRTIO_MMIO=y
diff --git a/arch/arc/configs/haps_hs_smp_defconfig b/arch/arc/configs/haps_hs_smp_defconfig
index ff4fcd7640a4..5586511a00bf 100644
--- a/arch/arc/configs/haps_hs_smp_defconfig
+++ b/arch/arc/configs/haps_hs_smp_defconfig
@@ -49,9 +49,9 @@ CONFIG_NETDEVICES=y
 # CONFIG_NET_VENDOR_WIZNET is not set
 # CONFIG_WLAN is not set
 CONFIG_INPUT_EVDEV=y
-CONFIG_MOUSE_PS2_TOUCHKIT=y
-# CONFIG_SERIO_SERPORT is not set
-CONFIG_SERIO_ARC_PS2=y
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_SERIO is not set
 # CONFIG_LEGACY_PTYS is not set
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
@@ -61,9 +61,6 @@ CONFIG_SERIAL_8250_DW=y
 CONFIG_SERIAL_OF_PLATFORM=y
 # CONFIG_HW_RANDOM is not set
 # CONFIG_HWMON is not set
-CONFIG_FB=y
-CONFIG_FRAMEBUFFER_CONSOLE=y
-CONFIG_LOGO=y
 # CONFIG_HID is not set
 # CONFIG_USB_SUPPORT is not set
 # CONFIG_IOMMU_SUPPORT is not set
-- 
2.21.0


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[PATCH 3/8] ARC: HAPS: use same UART configuration everywhere

[Eugeniy Paltsev]

For some reason we use ns8250 UART compatible on UP HAPS
configuration and ns16550a (which is ns8250 with FIFO support)
on SMP HAPS configuration.
Given that we have same UART IP with same IP configuration
on both HAPS configuration use ns16550a compatible everywhere.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
 arch/arc/boot/dts/haps_hs.dts     | 2 +-
 arch/arc/boot/dts/haps_hs_idu.dts | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/arc/boot/dts/haps_hs.dts b/arch/arc/boot/dts/haps_hs.dts
index 44bc522fdec8..11fad2f79056 100644
--- a/arch/arc/boot/dts/haps_hs.dts
+++ b/arch/arc/boot/dts/haps_hs.dts
@@ -47,7 +47,7 @@
 		};
 
 		uart0: serial@f0000000 {
-			compatible = "ns8250";
+			compatible = "ns16550a";
 			reg = <0xf0000000 0x2000>;
 			interrupts = <24>;
 			clock-frequency = <50000000>;
diff --git a/arch/arc/boot/dts/haps_hs_idu.dts b/arch/arc/boot/dts/haps_hs_idu.dts
index 4d6971cf5f9f..738c76cd07b3 100644
--- a/arch/arc/boot/dts/haps_hs_idu.dts
+++ b/arch/arc/boot/dts/haps_hs_idu.dts
@@ -54,7 +54,6 @@
 		};
 
 		uart0: serial@f0000000 {
-			/* compatible = "ns8250"; Doesn't use FIFOs */
 			compatible = "ns16550a";
 			reg = <0xf0000000 0x2000>;
 			interrupt-parent = <&idu_intc>;
-- 
2.21.0


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[PATCH 4/8] ARC: HAPS: add HIGHMEM memory zone to DTS

[Eugeniy Paltsev]

This is required as a preparation of merging nSIM and HASP
defonfig and device tree.

As we have HIGHMEM disabled in both HAPS and nSIM defconfigs
this doesn't lead to any functional change.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
 arch/arc/boot/dts/haps_hs.dts | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/arch/arc/boot/dts/haps_hs.dts b/arch/arc/boot/dts/haps_hs.dts
index 11fad2f79056..60d578e2781f 100644
--- a/arch/arc/boot/dts/haps_hs.dts
+++ b/arch/arc/boot/dts/haps_hs.dts
@@ -9,13 +9,15 @@
 / {
 	model = "snps,zebu_hs";
 	compatible = "snps,zebu_hs";
-	#address-cells = <1>;
-	#size-cells = <1>;
+	#address-cells = <2>;
+	#size-cells = <2>;
 	interrupt-parent = <&core_intc>;
 
 	memory {
 		device_type = "memory";
-		reg = <0x80000000 0x20000000>;	/* 512 */
+		/* CONFIG_LINUX_RAM_BASE needs to match low mem start */
+		reg = <0x0 0x80000000 0x0 0x20000000	/* 512 MB low mem */
+		       0x1 0x00000000 0x0 0x40000000>;	/* 1 GB highmem */
 	};
 
 	chosen {
@@ -31,8 +33,9 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		/* child and parent address space 1:1 mapped */
-		ranges;
+		/* only perip space at end of low mem accessible
+			  bus addr,  parent bus addr, size    */
+		ranges = <0x80000000 0x0 0x80000000 0x80000000>;
 
 		core_clk: core_clk {
 			#clock-cells = <0>;
-- 
2.21.0


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[PATCH 5/8] ARC: HAPS: cleanup defconfigs from unused ETH drivers

[Eugeniy Paltsev]

We have multiple vendors ethernet drivers enabled in haps_hs and
haps_hs_smp defconfig. The only one we possibly require is
VIRTIO_NET. So disable unused ones via disabling entire
CONFIG_ETHERNET which controls all vendor-specific ethernet
drivers.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
 arch/arc/configs/haps_hs_defconfig     | 11 +----------
 arch/arc/configs/haps_hs_smp_defconfig | 11 +----------
 2 files changed, 2 insertions(+), 20 deletions(-)

diff --git a/arch/arc/configs/haps_hs_defconfig b/arch/arc/configs/haps_hs_defconfig
index 33b7a402b6bd..7337cdf4ffdd 100644
--- a/arch/arc/configs/haps_hs_defconfig
+++ b/arch/arc/configs/haps_hs_defconfig
@@ -36,16 +36,7 @@ CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_VIRTIO_BLK=y
 CONFIG_NETDEVICES=y
 CONFIG_VIRTIO_NET=y
-# CONFIG_NET_VENDOR_ARC is not set
-# CONFIG_NET_VENDOR_BROADCOM is not set
-# CONFIG_NET_VENDOR_INTEL is not set
-# CONFIG_NET_VENDOR_MARVELL is not set
-# CONFIG_NET_VENDOR_MICREL is not set
-# CONFIG_NET_VENDOR_NATSEMI is not set
-# CONFIG_NET_VENDOR_SEEQ is not set
-# CONFIG_NET_VENDOR_STMICRO is not set
-# CONFIG_NET_VENDOR_VIA is not set
-# CONFIG_NET_VENDOR_WIZNET is not set
+# CONFIG_ETHERNET is not set
 # CONFIG_WLAN is not set
 CONFIG_INPUT_EVDEV=y
 # CONFIG_INPUT_KEYBOARD is not set
diff --git a/arch/arc/configs/haps_hs_smp_defconfig b/arch/arc/configs/haps_hs_smp_defconfig
index 5586511a00bf..bc927221afc0 100644
--- a/arch/arc/configs/haps_hs_smp_defconfig
+++ b/arch/arc/configs/haps_hs_smp_defconfig
@@ -37,16 +37,7 @@ CONFIG_DEVTMPFS=y
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
 # CONFIG_BLK_DEV is not set
 CONFIG_NETDEVICES=y
-# CONFIG_NET_VENDOR_ARC is not set
-# CONFIG_NET_VENDOR_BROADCOM is not set
-# CONFIG_NET_VENDOR_INTEL is not set
-# CONFIG_NET_VENDOR_MARVELL is not set
-# CONFIG_NET_VENDOR_MICREL is not set
-# CONFIG_NET_VENDOR_NATSEMI is not set
-# CONFIG_NET_VENDOR_SEEQ is not set
-# CONFIG_NET_VENDOR_STMICRO is not set
-# CONFIG_NET_VENDOR_VIA is not set
-# CONFIG_NET_VENDOR_WIZNET is not set
+# CONFIG_ETHERNET is not set
 # CONFIG_WLAN is not set
 CONFIG_INPUT_EVDEV=y
 # CONFIG_INPUT_KEYBOARD is not set
-- 
2.21.0


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[PATCH 6/8] ARC: merge HAPS-HS with nSIM-HS configs

[Eugeniy Paltsev]

Starting from nSIM 2019.06 is possible to use DW UART
instead of ARC UART. That allows us to merge
"nsim_hs" with "haps_hs" and "nsim_hs_smp" with "haps_hs_smp"
with minor changes which were done in previous commits.

We eliminate nsim_hs_defconfig and nsim_hs_smp_defconfig
and leave haps_hs_defconfig and haps_hs_smp_defconfig
which can be used on HAPS / nSIM / ZEBU / QEMU platforms
without additional changes in Linux kernel.

For nSIM we should now use UART property values
"-prop=nsim_mem-dev=uart0,kind=dwuart,base=0xf0000000"
instead of previously used
"-prop=nsim_mem-dev=uart0,base=0xc0fc1000"
"use_connect" and "irq" values of UART property remains untouched.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
 arch/arc/Makefile                      |  2 +-
 arch/arc/boot/dts/nsim_hs.dts          | 67 --------------------------
 arch/arc/boot/dts/nsim_hs_idu.dts      | 65 -------------------------
 arch/arc/configs/nsim_hs_defconfig     | 56 ---------------------
 arch/arc/configs/nsim_hs_smp_defconfig | 54 ---------------------
 arch/arc/plat-sim/platform.c           |  1 -
 6 files changed, 1 insertion(+), 244 deletions(-)
 delete mode 100644 arch/arc/boot/dts/nsim_hs.dts
 delete mode 100644 arch/arc/boot/dts/nsim_hs_idu.dts
 delete mode 100644 arch/arc/configs/nsim_hs_defconfig
 delete mode 100644 arch/arc/configs/nsim_hs_smp_defconfig

diff --git a/arch/arc/Makefile b/arch/arc/Makefile
index f1c44cccf8d6..20e9ab6cc521 100644
--- a/arch/arc/Makefile
+++ b/arch/arc/Makefile
@@ -3,7 +3,7 @@
 # Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
 #
 
-KBUILD_DEFCONFIG := nsim_hs_defconfig
+KBUILD_DEFCONFIG := haps_hs_smp_defconfig
 
 ifeq ($(CROSS_COMPILE),)
 CROSS_COMPILE := $(call cc-cross-prefix, arc-linux- arceb-linux-)
diff --git a/arch/arc/boot/dts/nsim_hs.dts b/arch/arc/boot/dts/nsim_hs.dts
deleted file mode 100644
index 851798a5f4e3..000000000000
--- a/arch/arc/boot/dts/nsim_hs.dts
+++ /dev/null
@@ -1,67 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com)
- */
-/dts-v1/;
-
-/include/ "skeleton_hs.dtsi"
-
-/ {
-	model = "snps,nsim_hs";
-	compatible = "snps,nsim_hs";
-	#address-cells = <2>;
-	#size-cells = <2>;
-	interrupt-parent = <&core_intc>;
-
-	memory {
-		device_type = "memory";
-		/* CONFIG_LINUX_RAM_BASE needs to match low mem start */
-		reg = <0x0 0x80000000 0x0 0x20000000	/* 512 MB low mem */
-		       0x1 0x00000000 0x0 0x40000000>;	/* 1 GB highmem */
-	};
-
-	chosen {
-		bootargs = "earlycon=arc_uart,mmio32,0xc0fc1000,115200n8 console=ttyARC0,115200n8 print-fatal-signals=1";
-	};
-
-	aliases {
-		serial0 = &arcuart0;
-	};
-
-	fpga {
-		compatible = "simple-bus";
-		#address-cells = <1>;
-		#size-cells = <1>;
-
-		/* only perip space at end of low mem accessible
-			 bus addr,   parent bus addr, size */
-		ranges = <0x80000000 0x0 0x80000000 0x80000000>;
-
-		core_clk: core_clk {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <80000000>;
-		};
-
-		core_intc: core-interrupt-controller {
-			compatible = "snps,archs-intc";
-			interrupt-controller;
-			#interrupt-cells = <1>;
-		};
-
-		arcuart0: serial@c0fc1000 {
-			compatible = "snps,arc-uart";
-			reg = <0xc0fc1000 0x100>;
-			interrupts = <24>;
-			clock-frequency = <80000000>;
-			current-speed = <115200>;
-			status = "okay";
-		};
-
-		arcpct0: pct {
-			compatible = "snps,archs-pct";
-			#interrupt-cells = <1>;
-			interrupts = <20>;
-		};
-	};
-};
diff --git a/arch/arc/boot/dts/nsim_hs_idu.dts b/arch/arc/boot/dts/nsim_hs_idu.dts
deleted file mode 100644
index 6c559a0bd1f5..000000000000
--- a/arch/arc/boot/dts/nsim_hs_idu.dts
+++ /dev/null
@@ -1,65 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com)
- */
-/dts-v1/;
-
-/include/ "skeleton_hs_idu.dtsi"
-
-/ {
-	model = "snps,nsim_hs-smp";
-	compatible = "snps,nsim_hs";
-	interrupt-parent = <&core_intc>;
-
-	chosen {
-		bootargs = "earlycon=arc_uart,mmio32,0xc0fc1000,115200n8 console=ttyARC0,115200n8 print-fatal-signals=1";
-	};
-
-	aliases {
-		serial0 = &arcuart0;
-	};
-
-	fpga {
-		compatible = "simple-bus";
-		#address-cells = <1>;
-		#size-cells = <1>;
-
-		/* child and parent address space 1:1 mapped */
-		ranges;
-
-		core_clk: core_clk {
-			#clock-cells = <0>;
-			compatible = "fixed-clock";
-			clock-frequency = <80000000>;
-		};
-
-		core_intc: core-interrupt-controller {
-			compatible = "snps,archs-intc";
-			interrupt-controller;
-			#interrupt-cells = <1>;
-		};
-
-		idu_intc: idu-interrupt-controller {
-			compatible = "snps,archs-idu-intc";
-			interrupt-controller;
-			interrupt-parent = <&core_intc>;
-			#interrupt-cells = <1>;
-		};
-
-		arcuart0: serial@c0fc1000 {
-			compatible = "snps,arc-uart";
-			reg = <0xc0fc1000 0x100>;
-			interrupt-parent = <&idu_intc>;
-			interrupts = <0>;
-			clock-frequency = <80000000>;
-			current-speed = <115200>;
-			status = "okay";
-		};
-
-		arcpct0: pct {
-			compatible = "snps,archs-pct";
-			#interrupt-cells = <1>;
-			interrupts = <20>;
-		};
-	};
-};
diff --git a/arch/arc/configs/nsim_hs_defconfig b/arch/arc/configs/nsim_hs_defconfig
deleted file mode 100644
index 60ad81769565..000000000000
--- a/arch/arc/configs/nsim_hs_defconfig
+++ /dev/null
@@ -1,56 +0,0 @@
-# CONFIG_LOCALVERSION_AUTO is not set
-# CONFIG_SWAP is not set
-CONFIG_SYSVIPC=y
-CONFIG_POSIX_MQUEUE=y
-# CONFIG_CROSS_MEMORY_ATTACH is not set
-CONFIG_HIGH_RES_TIMERS=y
-CONFIG_PREEMPT=y
-CONFIG_IKCONFIG=y
-CONFIG_IKCONFIG_PROC=y
-CONFIG_NAMESPACES=y
-# CONFIG_UTS_NS is not set
-# CONFIG_PID_NS is not set
-CONFIG_BLK_DEV_INITRD=y
-CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
-CONFIG_KALLSYMS_ALL=y
-CONFIG_EMBEDDED=y
-CONFIG_PERF_EVENTS=y
-# CONFIG_SLUB_DEBUG is not set
-# CONFIG_COMPAT_BRK is not set
-CONFIG_ARC_BUILTIN_DTB_NAME="nsim_hs"
-CONFIG_KPROBES=y
-CONFIG_MODULES=y
-CONFIG_MODULE_FORCE_LOAD=y
-CONFIG_MODULE_UNLOAD=y
-CONFIG_MODULE_FORCE_UNLOAD=y
-# CONFIG_BLK_DEV_BSG is not set
-# CONFIG_COMPACTION is not set
-CONFIG_NET=y
-CONFIG_PACKET=y
-CONFIG_UNIX=y
-CONFIG_UNIX_DIAG=y
-CONFIG_NET_KEY=y
-CONFIG_INET=y
-# CONFIG_IPV6 is not set
-CONFIG_DEVTMPFS=y
-# CONFIG_STANDALONE is not set
-# CONFIG_PREVENT_FIRMWARE_BUILD is not set
-# CONFIG_BLK_DEV is not set
-# CONFIG_INPUT_KEYBOARD is not set
-# CONFIG_INPUT_MOUSE is not set
-# CONFIG_SERIO is not set
-# CONFIG_LEGACY_PTYS is not set
-CONFIG_SERIAL_ARC=y
-CONFIG_SERIAL_ARC_CONSOLE=y
-# CONFIG_HW_RANDOM is not set
-# CONFIG_HWMON is not set
-# CONFIG_HID is not set
-# CONFIG_USB_SUPPORT is not set
-# CONFIG_IOMMU_SUPPORT is not set
-CONFIG_EXT2_FS=y
-CONFIG_EXT2_FS_XATTR=y
-CONFIG_TMPFS=y
-# CONFIG_MISC_FILESYSTEMS is not set
-CONFIG_NFS_FS=y
-# CONFIG_ENABLE_MUST_CHECK is not set
-# CONFIG_DEBUG_PREEMPT is not set
diff --git a/arch/arc/configs/nsim_hs_smp_defconfig b/arch/arc/configs/nsim_hs_smp_defconfig
deleted file mode 100644
index c7a29adfc147..000000000000
--- a/arch/arc/configs/nsim_hs_smp_defconfig
+++ /dev/null
@@ -1,54 +0,0 @@
-# CONFIG_LOCALVERSION_AUTO is not set
-# CONFIG_SWAP is not set
-# CONFIG_CROSS_MEMORY_ATTACH is not set
-CONFIG_HIGH_RES_TIMERS=y
-CONFIG_PREEMPT=y
-CONFIG_IKCONFIG=y
-CONFIG_IKCONFIG_PROC=y
-CONFIG_NAMESPACES=y
-# CONFIG_UTS_NS is not set
-# CONFIG_PID_NS is not set
-CONFIG_BLK_DEV_INITRD=y
-CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3=y
-CONFIG_KALLSYMS_ALL=y
-CONFIG_EMBEDDED=y
-CONFIG_PERF_EVENTS=y
-# CONFIG_SLUB_DEBUG is not set
-# CONFIG_COMPAT_BRK is not set
-CONFIG_SMP=y
-CONFIG_ARC_BUILTIN_DTB_NAME="nsim_hs_idu"
-CONFIG_KPROBES=y
-CONFIG_MODULES=y
-CONFIG_MODULE_FORCE_LOAD=y
-CONFIG_MODULE_UNLOAD=y
-CONFIG_MODULE_FORCE_UNLOAD=y
-# CONFIG_BLK_DEV_BSG is not set
-# CONFIG_COMPACTION is not set
-CONFIG_NET=y
-CONFIG_PACKET=y
-CONFIG_UNIX=y
-CONFIG_UNIX_DIAG=y
-CONFIG_NET_KEY=y
-CONFIG_INET=y
-# CONFIG_IPV6 is not set
-CONFIG_DEVTMPFS=y
-# CONFIG_STANDALONE is not set
-# CONFIG_PREVENT_FIRMWARE_BUILD is not set
-# CONFIG_BLK_DEV is not set
-# CONFIG_INPUT_KEYBOARD is not set
-# CONFIG_INPUT_MOUSE is not set
-# CONFIG_SERIO is not set
-# CONFIG_LEGACY_PTYS is not set
-CONFIG_SERIAL_ARC=y
-CONFIG_SERIAL_ARC_CONSOLE=y
-# CONFIG_HW_RANDOM is not set
-# CONFIG_HWMON is not set
-# CONFIG_HID is not set
-# CONFIG_USB_SUPPORT is not set
-# CONFIG_IOMMU_SUPPORT is not set
-CONFIG_EXT2_FS=y
-CONFIG_EXT2_FS_XATTR=y
-CONFIG_TMPFS=y
-# CONFIG_MISC_FILESYSTEMS is not set
-CONFIG_NFS_FS=y
-# CONFIG_ENABLE_MUST_CHECK is not set
diff --git a/arch/arc/plat-sim/platform.c b/arch/arc/plat-sim/platform.c
index 3765dedcd319..2bde2a6e336a 100644
--- a/arch/arc/plat-sim/platform.c
+++ b/arch/arc/plat-sim/platform.c
@@ -21,7 +21,6 @@ static const char *simulation_compat[] __initconst = {
 	"snps,nsim",
 	"snps,nsimosci",
 #else
-	"snps,nsim_hs",
 	"snps,nsimosci_hs",
 	"snps,zebu_hs",
 #endif
-- 
2.21.0


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[PATCH 7/8] ARC: nSIM_700: switch to DW UART usage

[Eugeniy Paltsev]

Switch nsim_700_defconfig to dwuart for consistent uart settings
for all nSIM configurations.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
 arch/arc/boot/dts/nsim_700.dts      | 20 +++++++++++---------
 arch/arc/configs/nsim_700_defconfig |  8 ++++++--
 2 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/arch/arc/boot/dts/nsim_700.dts b/arch/arc/boot/dts/nsim_700.dts
index 63dbaab1247d..ae9bc21fe11b 100644
--- a/arch/arc/boot/dts/nsim_700.dts
+++ b/arch/arc/boot/dts/nsim_700.dts
@@ -14,11 +14,11 @@
 	interrupt-parent = <&core_intc>;
 
 	chosen {
-		bootargs = "earlycon=arc_uart,mmio32,0xc0fc1000,115200n8 console=ttyARC0,115200n8 print-fatal-signals=1";
+		bootargs = "earlycon=uart8250,mmio32,0xf0000000,115200n8 console=ttyS0,115200n8 print-fatal-signals=1";
 	};
 
 	aliases {
-		serial0 = &arcuart0;
+		serial0 = &uart0;
 	};
 
 	fpga {
@@ -41,13 +41,15 @@
 			#interrupt-cells = <1>;
 		};
 
-		arcuart0: serial@c0fc1000 {
-			compatible = "snps,arc-uart";
-			reg = <0xc0fc1000 0x100>;
-			interrupts = <5>;
-			clock-frequency = <80000000>;
-			current-speed = <115200>;
-			status = "okay";
+		uart0: serial@f0000000 {
+			compatible = "ns16550a";
+			reg = <0xf0000000 0x2000>;
+			interrupts = <24>;
+			clock-frequency = <50000000>;
+			baud = <115200>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			no-loopback-test = <1>;
 		};
 
 		ethernet@c0fc2000 {
diff --git a/arch/arc/configs/nsim_700_defconfig b/arch/arc/configs/nsim_700_defconfig
index 9b2653b0b349..5c488140f537 100644
--- a/arch/arc/configs/nsim_700_defconfig
+++ b/arch/arc/configs/nsim_700_defconfig
@@ -41,8 +41,12 @@ CONFIG_LXT_PHY=y
 # CONFIG_INPUT_MOUSE is not set
 # CONFIG_SERIO is not set
 # CONFIG_LEGACY_PTYS is not set
-CONFIG_SERIAL_ARC=y
-CONFIG_SERIAL_ARC_CONSOLE=y
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_NR_UARTS=1
+CONFIG_SERIAL_8250_RUNTIME_UARTS=1
+CONFIG_SERIAL_8250_DW=y
+CONFIG_SERIAL_OF_PLATFORM=y
 # CONFIG_HW_RANDOM is not set
 # CONFIG_HWMON is not set
 # CONFIG_HID is not set
-- 
2.21.0


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[PATCH 8/8] ARC: nSIM_700: remove unused network options

[Eugeniy Paltsev]

We have snps,arc-emac enabled in nSIM_700. It's obsolete and it's
not used anymore so remove its device tree node and disable
unused network options in defconfig.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
 arch/arc/boot/dts/nsim_700.dts      | 16 ----------------
 arch/arc/configs/nsim_700_defconfig |  4 ++--
 2 files changed, 2 insertions(+), 18 deletions(-)

diff --git a/arch/arc/boot/dts/nsim_700.dts b/arch/arc/boot/dts/nsim_700.dts
index ae9bc21fe11b..f8832a15e174 100644
--- a/arch/arc/boot/dts/nsim_700.dts
+++ b/arch/arc/boot/dts/nsim_700.dts
@@ -52,22 +52,6 @@
 			no-loopback-test = <1>;
 		};
 
-		ethernet@c0fc2000 {
-			compatible = "snps,arc-emac";
-			reg = <0xc0fc2000 0x3c>;
-			interrupts = <6>;
-			mac-address = [ 00 11 22 33 44 55 ];
-			clock-frequency = <80000000>;
-			max-speed = <100>;
-			phy = <&phy0>;
-
-			#address-cells = <1>;
-			#size-cells = <0>;
-			phy0: ethernet-phy@0 {
-				reg = <1>;
-			};
-		};
-
 		arcpct0: pct {
 			compatible = "snps,arc700-pct";
 		};
diff --git a/arch/arc/configs/nsim_700_defconfig b/arch/arc/configs/nsim_700_defconfig
index 5c488140f537..326f6cde7826 100644
--- a/arch/arc/configs/nsim_700_defconfig
+++ b/arch/arc/configs/nsim_700_defconfig
@@ -35,8 +35,8 @@ CONFIG_DEVTMPFS=y
 # CONFIG_PREVENT_FIRMWARE_BUILD is not set
 # CONFIG_BLK_DEV is not set
 CONFIG_NETDEVICES=y
-CONFIG_ARC_EMAC=y
-CONFIG_LXT_PHY=y
+# CONFIG_ETHERNET is not set
+# CONFIG_WLAN is not set
 # CONFIG_INPUT_KEYBOARD is not set
 # CONFIG_INPUT_MOUSE is not set
 # CONFIG_SERIO is not set
-- 
2.21.0


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