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https://github.com/smaeul/u-boot.git
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1c5aab803c
QEMU provides SMBIOS tables with detailed information. We should not try to replicate them in U-Boot. If we want to inform about U-Boot, we can add a Firmware Inventory Information (type 45) table in future. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Simon Glass <sjg@chromium.org>
86 lines
1.7 KiB
C
86 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* EFI application tables support
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*
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* Copyright (c) 2016 Alexander Graf
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*/
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#define LOG_CATEGORY LOGC_EFI
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#include <efi_loader.h>
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#include <log.h>
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#include <malloc.h>
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#include <mapmem.h>
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#include <smbios.h>
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#include <linux/sizes.h>
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#include <asm/global_data.h>
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DECLARE_GLOBAL_DATA_PTR;
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const efi_guid_t smbios3_guid = SMBIOS3_TABLE_GUID;
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enum {
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TABLE_SIZE = SZ_4K,
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};
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/*
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* Install the SMBIOS table as a configuration table.
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*
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* Return: status code
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*/
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efi_status_t efi_smbios_register(void)
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{
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ulong addr;
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efi_status_t ret;
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void *buf;
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addr = gd_smbios_start();
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if (!addr) {
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log_err("No SMBIOS tables to install\n");
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return EFI_NOT_FOUND;
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}
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/* Mark space used for tables */
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ret = efi_add_memory_map(addr, TABLE_SIZE, EFI_RUNTIME_SERVICES_DATA);
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if (ret)
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return ret;
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log_debug("EFI using SMBIOS tables at %lx\n", addr);
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/* Install SMBIOS information as configuration table */
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buf = map_sysmem(addr, 0);
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ret = efi_install_configuration_table(&smbios3_guid, buf);
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unmap_sysmem(buf);
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return ret;
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}
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static int install_smbios_table(void)
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{
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ulong addr;
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void *buf;
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if (!IS_ENABLED(CONFIG_GENERATE_SMBIOS_TABLE) ||
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IS_ENABLED(CONFIG_X86) ||
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IS_ENABLED(CONFIG_QFW_SMBIOS))
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return 0;
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/* Align the table to a 4KB boundary to keep EFI happy */
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buf = memalign(SZ_4K, TABLE_SIZE);
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if (!buf)
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return log_msg_ret("mem", -ENOMEM);
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addr = map_to_sysmem(buf);
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if (!write_smbios_table(addr)) {
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log_err("Failed to write SMBIOS table\n");
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return log_msg_ret("smbios", -EINVAL);
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}
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/* Make a note of where we put it */
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log_debug("SMBIOS tables written to %lx\n", addr);
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gd->arch.smbios_start = addr;
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return 0;
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}
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EVENT_SPY_SIMPLE(EVT_LAST_STAGE_INIT, install_smbios_table);
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