From 43b6fa9c1464e0918004dc03be03acd3c40bcc25 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Wed, 12 Jul 2023 09:04:36 -0600
Subject: [PATCH] bootstd: Allow storing x86 setup information
On x86 boards Linux uses a block of binary data to provide information
about the command line, memory map, etc. Provide a way to store this in
the bootflow so it can be passed on to the OS.
No attempt is made to generalise the code, since other archs don't need
this information. The field is present always, though, to avoid needing
accessors or #ifdefs when building code on other archs.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---
cmd/bootflow.c | 2 ++
include/bootflow.h | 2 ++
2 files changed, 4 insertions(+)
diff --git a/cmd/bootflow.c b/cmd/bootflow.c
index f33db7be5f..bf30087c7c 100644
--- a/cmd/bootflow.c
+++ b/cmd/bootflow.c
@@ -336,6 +336,8 @@ static int do_bootflow_info(struct cmd_tbl *cmdtp, int flag, int argc,
else
puts("(none)");
putc('\n');
+ if (bflow->x86_setup)
+ printf("X86 setup: %p\n", bflow->x86_setup);
printf("Logo: %s\n", bflow->logo ?
simple_xtoa((ulong)map_to_sysmem(bflow->logo)) : "(none)");
if (bflow->logo) {
diff --git a/include/bootflow.h b/include/bootflow.h
index a1c16ab93b..f263173c4d 100644
--- a/include/bootflow.h
+++ b/include/bootflow.h
@@ -82,6 +82,7 @@ enum bootflow_flags_t {
* @fdt_addr: Address of loaded fdt
* @flags: Flags for the bootflow (see enum bootflow_flags_t)
* @cmdline: OS command line, or NULL if not known (allocated)
+ * @x86_setup: Pointer to x86 setup block inside @buf, NULL if not present
*/
struct bootflow {
struct list_head bm_node;
@@ -106,6 +107,7 @@ struct bootflow {
ulong fdt_addr;
int flags;
char *cmdline;
+ char *x86_setup;
};
/**
--
2.39.5