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smbios: Expose in efi_loader as table

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We can pass SMBIOS easily as EFI configuration table to an EFI payload. This
patch adds enablement for that case.

While at it, we also enable SMBIOS generation for ARM systems, since they support
EFI_LOADER.

Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Alexander Graf 2016-08-19 01:23:29 +02:00
parent 96476206c5
commit e663b350f1
8 changed files with 51 additions and 2 deletions
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3
cmd/bootefi.c
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@ -205,6 +205,9 @@ static unsigned long do_bootefi_exec(void *efi, void *fdt)
if (!memcmp(bootefi_device_path[0].str, "N\0e\0t", 6))
loaded_image_info.device_handle = nethandle;
#endif
#ifdef CONFIG_GENERATE_SMBIOS_TABLE
efi_smbios_register();
#endif
/* Initialize EFI runtime services */
efi_reset_system_init();

4
include/efi_api.h
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@ -201,6 +201,10 @@ struct efi_runtime_services {
EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, \
0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
#define SMBIOS_TABLE_GUID \
EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, \
0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
struct efi_configuration_table
{
efi_guid_t guid;

2
include/efi_loader.h
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@ -85,6 +85,8 @@ int efi_disk_register(void);
int efi_gop_register(void);
/* Called by bootefi to make the network interface available */
int efi_net_register(void **handle);
/* Called by bootefi to make SMBIOS tables available */
void efi_smbios_register(void);
/* Called by networking code to memorize the dhcp ack package */
void efi_net_set_dhcp_ack(void *pkt, int len);

1
include/smbios.h
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@ -55,6 +55,7 @@ struct __packed smbios_entry {
#define BIOS_CHARACTERISTICS_SELECTABLE_BOOT (1 << 16)
#define BIOS_CHARACTERISTICS_EXT1_ACPI (1 << 0)
#define BIOS_CHARACTERISTICS_EXT1_UEFI (1 << 3)
#define BIOS_CHARACTERISTICS_EXT2_TARGET (1 << 2)
struct __packed smbios_type0 {

4
lib/Kconfig
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@ -164,12 +164,12 @@ config FDT_FIXUP_PARTITIONS
variable.
menu "System tables"
depends on !EFI && !SYS_COREBOOT
depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
config GENERATE_SMBIOS_TABLE
bool "Generate an SMBIOS (System Management BIOS) table"
default y
depends on X86
depends on X86 || EFI_LOADER
help
The System Management BIOS (SMBIOS) specification addresses how
motherboard and system vendors present management information about

1
lib/efi_loader/Makefile
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@ -12,3 +12,4 @@ obj-y += efi_memory.o
obj-$(CONFIG_LCD) += efi_gop.o
obj-$(CONFIG_PARTITIONS) += efi_disk.o
obj-$(CONFIG_NET) += efi_net.o
obj-$(CONFIG_GENERATE_SMBIOS_TABLE) += efi_smbios.o

32
lib/efi_loader/efi_smbios.c Normal file
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@ -0,0 +1,32 @@
/*
* EFI application tables support
*
* Copyright (c) 2016 Alexander Graf
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <efi_loader.h>
#include <inttypes.h>
#include <smbios.h>
static const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID;
void efi_smbios_register(void)
{
/* Map within the low 32 bits, to allow for 32bit SMBIOS tables */
uint64_t dmi = 0xffffffff;
/* Reserve 4kb for SMBIOS */
uint64_t pages = 1;
int memtype = EFI_RUNTIME_SERVICES_DATA;
if (efi_allocate_pages(1, memtype, pages, &dmi) != EFI_SUCCESS)
return;
/* Generate SMBIOS tables */
write_smbios_table(dmi);
/* And expose them to our EFI payload */
efi_install_configuration_table(&smbios_guid, (void*)(uintptr_t)dmi);
}

6
lib/smbios.c
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@ -83,14 +83,20 @@ static int smbios_write_type0(uintptr_t *current, int handle)
t->vendor = smbios_add_string(t->eos, "U-Boot");
t->bios_ver = smbios_add_string(t->eos, PLAIN_VERSION);
t->bios_release_date = smbios_add_string(t->eos, U_BOOT_DMI_DATE);
#ifdef CONFIG_ROM_SIZE
t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1;
#endif
t->bios_characteristics = BIOS_CHARACTERISTICS_PCI_SUPPORTED |
BIOS_CHARACTERISTICS_SELECTABLE_BOOT |
BIOS_CHARACTERISTICS_UPGRADEABLE;
#ifdef CONFIG_GENERATE_ACPI_TABLE
t->bios_characteristics_ext1 = BIOS_CHARACTERISTICS_EXT1_ACPI;
#endif
#ifdef CONFIG_EFI_LOADER
t->bios_characteristics_ext1 |= BIOS_CHARACTERISTICS_EXT1_UEFI;
#endif
t->bios_characteristics_ext2 = BIOS_CHARACTERISTICS_EXT2_TARGET;
t->bios_major_release = 0xff;
t->bios_minor_release = 0xff;
t->ec_major_release = 0xff;