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https://github.com/AsahiLinux/u-boot
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3d49ee8510
TCG PC Client Platform Firmware Profile Specification requires to measure the SMBIOS table that contains static configuration information (e.g. Platform Manufacturer Enterprise Number assigned by IANA, platform model number, Vendor and Device IDs for each SMBIOS table). The device- and environment-dependent information such as serial number is cleared to zero or space character for the measurement. Existing smbios_string() function returns pointer to the string with const qualifier, but exisintg use case is updating version string and const qualifier must be removed. This commit removes const qualifier from smbios_string() return value and reuses to clear the strings for the measurement. This commit also fixes the following compiler warning: lib/smbios-parser.c:59:39: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] const struct smbios_header *header = (struct smbios_header *)entry->struct_table_address; Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
55 lines
1.4 KiB
C
55 lines
1.4 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 <common.h>
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#include <efi_loader.h>
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#include <log.h>
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#include <mapmem.h>
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#include <smbios.h>
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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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/* Map within the low 32 bits, to allow for 32bit SMBIOS tables */
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u64 dmi_addr = U32_MAX;
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efi_status_t ret;
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void *dmi;
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/* Reserve 4kiB page for SMBIOS */
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ret = efi_allocate_pages(EFI_ALLOCATE_MAX_ADDRESS,
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EFI_RUNTIME_SERVICES_DATA, 1, &dmi_addr);
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if (ret != EFI_SUCCESS) {
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/* Could not find space in lowmem, use highmem instead */
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ret = efi_allocate_pages(EFI_ALLOCATE_ANY_PAGES,
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EFI_RUNTIME_SERVICES_DATA, 1,
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&dmi_addr);
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if (ret != EFI_SUCCESS)
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return ret;
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}
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/*
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* Generate SMBIOS tables - we know that efi_allocate_pages() returns
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* a 4k-aligned address, so it is safe to assume that
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* write_smbios_table() will write the table at that address.
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*/
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assert(!(dmi_addr & 0xf));
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dmi = (void *)(uintptr_t)dmi_addr;
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if (write_smbios_table(map_to_sysmem(dmi)))
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/* Install SMBIOS information as configuration table */
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return efi_install_configuration_table(&smbios_guid, dmi);
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efi_free_pages(dmi_addr, 1);
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log_err("Cannot create SMBIOS table\n");
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return EFI_SUCCESS;
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}
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