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efi: Collect the ACPI tables in the app

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Locate these so that they can be displayed using the 'acpi' command.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
This commit is contained in:
Simon Glass
2023-11-12 13:55:09 -07:00
committed by Heinrich Schuchardt
parent f32fee0359
commit a900d88e1a
1 changed files with 21 additions and 3 deletions
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24
lib/efi/efi_app.c
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@@ -12,18 +12,21 @@
#include <cpu_func.h>
#include <debug_uart.h>
#include <dm.h>
#include <efi.h>
#include <efi_api.h>
#include <errno.h>
#include <init.h>
#include <malloc.h>
#include <sysreset.h>
#include <uuid.h>
#include <asm/global_data.h>
#include <linux/err.h>
#include <linux/types.h>
#include <efi.h>
#include <efi_api.h>
#include <sysreset.h>
#include <asm/global_data.h>
#include <dm/device-internal.h>
#include <dm/lists.h>
#include <dm/root.h>
#include <mapmem.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -320,6 +323,19 @@ int dm_scan_other(bool pre_reloc_only)
return 0;
}
static void scan_tables(struct efi_system_table *sys_table)
{
efi_guid_t acpi = EFI_ACPI_TABLE_GUID;
uint i;
for (i = 0; i < sys_table->nr_tables; i++) {
struct efi_configuration_table *tab = &sys_table->tables[i];
if (!memcmp(&tab->guid, &acpi, sizeof(efi_guid_t)))
gd_set_acpi_start(map_to_sysmem(tab->table));
}
}
/**
* efi_main() - Start an EFI image
*
@@ -354,6 +370,8 @@ efi_status_t EFIAPI efi_main(efi_handle_t image,
return ret;
}
scan_tables(priv->sys_table);
/*
* We could store the EFI memory map here, but it changes all the time,
* so this is only useful for debugging.