All of lore.kernel.org
 help / color / mirror / Atom feed
From: Alistair Francis <alistair.francis@wdc.com>
To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org
Cc: alistair.francis@wdc.com, bmeng.cn@gmail.com, palmer@dabbelt.com,
	alistair23@gmail.com
Subject: [PATCH v2 2/4] hw/riscv: Return the end address of the loaded firmware
Date: Tue, 13 Oct 2020 17:17:28 -0700	[thread overview]
Message-ID: <558cf67162342d65a23262248b040563716628b2.1602634524.git.alistair.francis@wdc.com> (raw)
In-Reply-To: <cover.1602634524.git.alistair.francis@wdc.com>

Instead of returning the unused entry address from riscv_load_firmware()
instead return the end address. Also return the end address from
riscv_find_and_load_firmware().

This tells the caller if a firmware was loaded and how big it is. This
can be used to determine the load address of the next image (usually the
kernel).

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
 include/hw/riscv/boot.h |  8 ++++----
 hw/riscv/boot.c         | 28 +++++++++++++++++-----------
 2 files changed, 21 insertions(+), 15 deletions(-)

diff --git a/include/hw/riscv/boot.h b/include/hw/riscv/boot.h
index 451338780a..0acbd8aa6e 100644
--- a/include/hw/riscv/boot.h
+++ b/include/hw/riscv/boot.h
@@ -23,10 +23,10 @@
 #include "exec/cpu-defs.h"
 #include "hw/loader.h"
 
-void riscv_find_and_load_firmware(MachineState *machine,
-                                  const char *default_machine_firmware,
-                                  hwaddr firmware_load_addr,
-                                  symbol_fn_t sym_cb);
+target_ulong riscv_find_and_load_firmware(MachineState *machine,
+                                          const char *default_machine_firmware,
+                                          hwaddr firmware_load_addr,
+                                          symbol_fn_t sym_cb);
 char *riscv_find_firmware(const char *firmware_filename);
 target_ulong riscv_load_firmware(const char *firmware_filename,
                                  hwaddr firmware_load_addr,
diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c
index 21adaae56e..fa699308a0 100644
--- a/hw/riscv/boot.c
+++ b/hw/riscv/boot.c
@@ -40,12 +40,13 @@
 #define fw_dynamic_info_data(__val)     cpu_to_le64(__val)
 #endif
 
-void riscv_find_and_load_firmware(MachineState *machine,
-                                  const char *default_machine_firmware,
-                                  hwaddr firmware_load_addr,
-                                  symbol_fn_t sym_cb)
+target_ulong riscv_find_and_load_firmware(MachineState *machine,
+                                          const char *default_machine_firmware,
+                                          hwaddr firmware_load_addr,
+                                          symbol_fn_t sym_cb)
 {
     char *firmware_filename = NULL;
+    target_ulong firmware_end_addr = firmware_load_addr;
 
     if ((!machine->firmware) || (!strcmp(machine->firmware, "default"))) {
         /*
@@ -60,9 +61,12 @@ void riscv_find_and_load_firmware(MachineState *machine,
 
     if (firmware_filename) {
         /* If not "none" load the firmware */
-        riscv_load_firmware(firmware_filename, firmware_load_addr, sym_cb);
+        firmware_end_addr = riscv_load_firmware(firmware_filename,
+                                                firmware_load_addr, sym_cb);
         g_free(firmware_filename);
     }
+
+    return firmware_end_addr;
 }
 
 char *riscv_find_firmware(const char *firmware_filename)
@@ -91,17 +95,19 @@ target_ulong riscv_load_firmware(const char *firmware_filename,
                                  hwaddr firmware_load_addr,
                                  symbol_fn_t sym_cb)
 {
-    uint64_t firmware_entry;
+    uint64_t firmware_entry, firmware_size, firmware_end;
 
     if (load_elf_ram_sym(firmware_filename, NULL, NULL, NULL,
-                         &firmware_entry, NULL, NULL, NULL,
+                         &firmware_entry, NULL, &firmware_end, NULL,
                          0, EM_RISCV, 1, 0, NULL, true, sym_cb) > 0) {
-        return firmware_entry;
+        return firmware_end;
     }
 
-    if (load_image_targphys_as(firmware_filename, firmware_load_addr,
-                               ram_size, NULL) > 0) {
-        return firmware_load_addr;
+    firmware_size = load_image_targphys_as(firmware_filename,
+                                           firmware_load_addr, ram_size, NULL);
+
+    if (firmware_size > 0) {
+        return firmware_load_addr + firmware_size;
     }
 
     error_report("could not load firmware '%s'", firmware_filename);
-- 
2.28.0



WARNING: multiple messages have this Message-ID (diff)
From: Alistair Francis <alistair.francis@wdc.com>
To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org
Cc: bmeng.cn@gmail.com, palmer@dabbelt.com, alistair.francis@wdc.com,
	alistair23@gmail.com
Subject: [PATCH v2 2/4] hw/riscv: Return the end address of the loaded firmware
Date: Tue, 13 Oct 2020 17:17:28 -0700	[thread overview]
Message-ID: <558cf67162342d65a23262248b040563716628b2.1602634524.git.alistair.francis@wdc.com> (raw)
In-Reply-To: <cover.1602634524.git.alistair.francis@wdc.com>

Instead of returning the unused entry address from riscv_load_firmware()
instead return the end address. Also return the end address from
riscv_find_and_load_firmware().

This tells the caller if a firmware was loaded and how big it is. This
can be used to determine the load address of the next image (usually the
kernel).

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
 include/hw/riscv/boot.h |  8 ++++----
 hw/riscv/boot.c         | 28 +++++++++++++++++-----------
 2 files changed, 21 insertions(+), 15 deletions(-)

diff --git a/include/hw/riscv/boot.h b/include/hw/riscv/boot.h
index 451338780a..0acbd8aa6e 100644
--- a/include/hw/riscv/boot.h
+++ b/include/hw/riscv/boot.h
@@ -23,10 +23,10 @@
 #include "exec/cpu-defs.h"
 #include "hw/loader.h"
 
-void riscv_find_and_load_firmware(MachineState *machine,
-                                  const char *default_machine_firmware,
-                                  hwaddr firmware_load_addr,
-                                  symbol_fn_t sym_cb);
+target_ulong riscv_find_and_load_firmware(MachineState *machine,
+                                          const char *default_machine_firmware,
+                                          hwaddr firmware_load_addr,
+                                          symbol_fn_t sym_cb);
 char *riscv_find_firmware(const char *firmware_filename);
 target_ulong riscv_load_firmware(const char *firmware_filename,
                                  hwaddr firmware_load_addr,
diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c
index 21adaae56e..fa699308a0 100644
--- a/hw/riscv/boot.c
+++ b/hw/riscv/boot.c
@@ -40,12 +40,13 @@
 #define fw_dynamic_info_data(__val)     cpu_to_le64(__val)
 #endif
 
-void riscv_find_and_load_firmware(MachineState *machine,
-                                  const char *default_machine_firmware,
-                                  hwaddr firmware_load_addr,
-                                  symbol_fn_t sym_cb)
+target_ulong riscv_find_and_load_firmware(MachineState *machine,
+                                          const char *default_machine_firmware,
+                                          hwaddr firmware_load_addr,
+                                          symbol_fn_t sym_cb)
 {
     char *firmware_filename = NULL;
+    target_ulong firmware_end_addr = firmware_load_addr;
 
     if ((!machine->firmware) || (!strcmp(machine->firmware, "default"))) {
         /*
@@ -60,9 +61,12 @@ void riscv_find_and_load_firmware(MachineState *machine,
 
     if (firmware_filename) {
         /* If not "none" load the firmware */
-        riscv_load_firmware(firmware_filename, firmware_load_addr, sym_cb);
+        firmware_end_addr = riscv_load_firmware(firmware_filename,
+                                                firmware_load_addr, sym_cb);
         g_free(firmware_filename);
     }
+
+    return firmware_end_addr;
 }
 
 char *riscv_find_firmware(const char *firmware_filename)
@@ -91,17 +95,19 @@ target_ulong riscv_load_firmware(const char *firmware_filename,
                                  hwaddr firmware_load_addr,
                                  symbol_fn_t sym_cb)
 {
-    uint64_t firmware_entry;
+    uint64_t firmware_entry, firmware_size, firmware_end;
 
     if (load_elf_ram_sym(firmware_filename, NULL, NULL, NULL,
-                         &firmware_entry, NULL, NULL, NULL,
+                         &firmware_entry, NULL, &firmware_end, NULL,
                          0, EM_RISCV, 1, 0, NULL, true, sym_cb) > 0) {
-        return firmware_entry;
+        return firmware_end;
     }
 
-    if (load_image_targphys_as(firmware_filename, firmware_load_addr,
-                               ram_size, NULL) > 0) {
-        return firmware_load_addr;
+    firmware_size = load_image_targphys_as(firmware_filename,
+                                           firmware_load_addr, ram_size, NULL);
+
+    if (firmware_size > 0) {
+        return firmware_load_addr + firmware_size;
     }
 
     error_report("could not load firmware '%s'", firmware_filename);
-- 
2.28.0



  parent reply	other threads:[~2020-10-14  0:30 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-14  0:17 [PATCH v2 0/4] Allow loading a no MMU kernel Alistair Francis
2020-10-14  0:17 ` Alistair Francis
2020-10-14  0:17 ` [PATCH v2 1/4] hw/riscv: sifive_u: Allow specifying the CPU Alistair Francis
2020-10-14  0:17   ` Alistair Francis
2020-10-19 23:17   ` Palmer Dabbelt
2020-10-19 23:17     ` Palmer Dabbelt
2020-10-20  3:17   ` Bin Meng
2020-10-20  3:17     ` Bin Meng
2020-10-14  0:17 ` Alistair Francis [this message]
2020-10-14  0:17   ` [PATCH v2 2/4] hw/riscv: Return the end address of the loaded firmware Alistair Francis
2020-10-19 23:17   ` Palmer Dabbelt
2020-10-19 23:17     ` Palmer Dabbelt
2020-10-20  3:17   ` Bin Meng
2020-10-20  3:17     ` Bin Meng
2020-10-14  0:17 ` [PATCH v2 3/4] hw/riscv: Add a riscv_is_32_bit() function Alistair Francis
2020-10-14  0:17   ` Alistair Francis
2020-10-19 23:17   ` Palmer Dabbelt
2020-10-19 23:17     ` Palmer Dabbelt
2020-10-20  3:17   ` Bin Meng
2020-10-20  3:17     ` Bin Meng
2020-10-14  0:17 ` [PATCH v2 4/4] hw/riscv: Load the kernel after the firmware Alistair Francis
2020-10-14  0:17   ` Alistair Francis
2020-10-19 23:17   ` Palmer Dabbelt
2020-10-19 23:17     ` Palmer Dabbelt
2020-10-20 15:46     ` Alistair Francis
2020-10-20 15:46       ` Alistair Francis
2020-11-06  2:48       ` Palmer Dabbelt
2020-11-06  2:48         ` Palmer Dabbelt
2020-11-06  4:15         ` Anup Patel
2020-11-06  4:15           ` Anup Patel
2020-11-09 23:19           ` Alistair Francis
2020-11-09 23:19             ` Alistair Francis
2020-10-20  3:17   ` Bin Meng
2020-10-20  3:17     ` Bin Meng
2020-10-20 15:44 ` [PATCH v2 0/4] Allow loading a no MMU kernel Alistair Francis
2020-10-20 15:44   ` Alistair Francis

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=558cf67162342d65a23262248b040563716628b2.1602634524.git.alistair.francis@wdc.com \
    --to=alistair.francis@wdc.com \
    --cc=alistair23@gmail.com \
    --cc=bmeng.cn@gmail.com \
    --cc=palmer@dabbelt.com \
    --cc=qemu-devel@nongnu.org \
    --cc=qemu-riscv@nongnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.