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smbios: add extended Extended BIOS ROM Size

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U-Boot claims to create SMBIOS 3.7 tables. The type 0 table has
a field Extended BIOS ROM Size since version 3.1.

BIOS ROM sizes of 16 MiB or above must be written to this field.

Add and fill the missing field.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
This commit is contained in:
Heinrich Schuchardt 2024-07-23 16:44:23 +02:00
parent 272df36494
commit 8c919fcd20
2 changed files with 9 additions and 1 deletions

1
include/smbios.h
View file

@ -105,6 +105,7 @@ struct __packed smbios_type0 {
u8 bios_minor_release;
u8 ec_major_release;
u8 ec_minor_release;
u16 extended_bios_rom_size;
char eos[SMBIOS_STRUCT_EOS_BYTES];
};

9
lib/smbios.c
View file

@ -22,6 +22,7 @@
#include <cpu.h>
#include <dm/uclass-internal.h>
#endif
#include <linux/sizes.h>
/* Safeguard for checking that U_BOOT_VERSION_NUM macros are compatible with U_BOOT_DMI */
#if U_BOOT_VERSION_NUM < 2000 || U_BOOT_VERSION_NUM > 2099 || \
@ -348,7 +349,13 @@ static int smbios_write_type0(ulong *current, int handle,
#endif
t->bios_release_date = smbios_add_prop(ctx, NULL, U_BOOT_DMI_DATE);
#ifdef CONFIG_ROM_SIZE
t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1;
if (CONFIG_ROM_SIZE < SZ_16M) {
t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1;
} else {
/* CONFIG_ROM_SIZE < 8 GiB */
t->bios_rom_size = 0xff;
t->extended_bios_rom_size = CONFIG_ROM_SIZE >> 20;
}
#endif
t->bios_characteristics = BIOS_CHARACTERISTICS_PCI_SUPPORTED |
BIOS_CHARACTERISTICS_SELECTABLE_BOOT |