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https://github.com/AsahiLinux/u-boot
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00a871d34e
smbios_add_string() cannot deal with empty strings. This leads to incorrect property values and invalid tables. E.g. for the pine64-lts_defconfig CONFIG_SMBIOS_MANUFACTURER="". Linux command dmidecode shows: Table 1: Manufacturer: sunxi Product Name: sunxi Table 3: Invalid entry length (2). DMI table is broken! Stop. Replace empty strings by "Unknown". Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
340 lines
8.5 KiB
C
340 lines
8.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
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*
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* Adapted from coreboot src/arch/x86/smbios.c
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*/
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#include <common.h>
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#include <env.h>
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#include <mapmem.h>
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#include <smbios.h>
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#include <tables_csum.h>
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#include <version.h>
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#ifdef CONFIG_CPU
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#include <cpu.h>
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#include <dm.h>
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#include <dm/uclass-internal.h>
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#endif
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/**
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* smbios_add_string() - add a string to the string area
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*
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* This adds a string to the string area which is appended directly after
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* the formatted portion of an SMBIOS structure.
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*
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* @start: string area start address
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* @str: string to add
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* @return: string number in the string area
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*/
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static int smbios_add_string(char *start, const char *str)
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{
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int i = 1;
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char *p = start;
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if (!*str)
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str = "Unknown";
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for (;;) {
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if (!*p) {
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strcpy(p, str);
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p += strlen(str);
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*p++ = '\0';
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*p++ = '\0';
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return i;
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}
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if (!strcmp(p, str))
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return i;
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p += strlen(p) + 1;
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i++;
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}
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}
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/**
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* smbios_string_table_len() - compute the string area size
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*
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* This computes the size of the string area including the string terminator.
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*
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* @start: string area start address
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* @return: string area size
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*/
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static int smbios_string_table_len(char *start)
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{
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char *p = start;
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int i, len = 0;
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while (*p) {
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i = strlen(p) + 1;
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p += i;
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len += i;
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}
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return len + 1;
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}
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static int smbios_write_type0(ulong *current, int handle)
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{
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struct smbios_type0 *t;
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int len = sizeof(struct smbios_type0);
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t = map_sysmem(*current, len);
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memset(t, 0, sizeof(struct smbios_type0));
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fill_smbios_header(t, SMBIOS_BIOS_INFORMATION, len, handle);
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t->vendor = smbios_add_string(t->eos, "U-Boot");
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t->bios_ver = smbios_add_string(t->eos, PLAIN_VERSION);
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t->bios_release_date = smbios_add_string(t->eos, U_BOOT_DMI_DATE);
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#ifdef CONFIG_ROM_SIZE
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t->bios_rom_size = (CONFIG_ROM_SIZE / 65536) - 1;
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#endif
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t->bios_characteristics = BIOS_CHARACTERISTICS_PCI_SUPPORTED |
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BIOS_CHARACTERISTICS_SELECTABLE_BOOT |
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BIOS_CHARACTERISTICS_UPGRADEABLE;
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#ifdef CONFIG_GENERATE_ACPI_TABLE
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t->bios_characteristics_ext1 = BIOS_CHARACTERISTICS_EXT1_ACPI;
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#endif
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#ifdef CONFIG_EFI_LOADER
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t->bios_characteristics_ext1 |= BIOS_CHARACTERISTICS_EXT1_UEFI;
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#endif
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t->bios_characteristics_ext2 = BIOS_CHARACTERISTICS_EXT2_TARGET;
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t->bios_major_release = 0xff;
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t->bios_minor_release = 0xff;
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t->ec_major_release = 0xff;
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t->ec_minor_release = 0xff;
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len = t->length + smbios_string_table_len(t->eos);
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*current += len;
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unmap_sysmem(t);
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return len;
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}
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static int smbios_write_type1(ulong *current, int handle)
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{
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struct smbios_type1 *t;
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int len = sizeof(struct smbios_type1);
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char *serial_str = env_get("serial#");
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t = map_sysmem(*current, len);
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memset(t, 0, sizeof(struct smbios_type1));
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fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle);
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t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
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t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME);
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if (serial_str) {
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strncpy((char *)t->uuid, serial_str, sizeof(t->uuid));
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t->serial_number = smbios_add_string(t->eos, serial_str);
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}
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len = t->length + smbios_string_table_len(t->eos);
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*current += len;
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unmap_sysmem(t);
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return len;
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}
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static int smbios_write_type2(ulong *current, int handle)
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{
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struct smbios_type2 *t;
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int len = sizeof(struct smbios_type2);
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t = map_sysmem(*current, len);
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memset(t, 0, sizeof(struct smbios_type2));
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fill_smbios_header(t, SMBIOS_BOARD_INFORMATION, len, handle);
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t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
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t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME);
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t->feature_flags = SMBIOS_BOARD_FEATURE_HOSTING;
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t->board_type = SMBIOS_BOARD_MOTHERBOARD;
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len = t->length + smbios_string_table_len(t->eos);
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*current += len;
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unmap_sysmem(t);
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return len;
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}
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static int smbios_write_type3(ulong *current, int handle)
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{
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struct smbios_type3 *t;
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int len = sizeof(struct smbios_type3);
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t = map_sysmem(*current, len);
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memset(t, 0, sizeof(struct smbios_type3));
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fill_smbios_header(t, SMBIOS_SYSTEM_ENCLOSURE, len, handle);
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t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
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t->chassis_type = SMBIOS_ENCLOSURE_DESKTOP;
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t->bootup_state = SMBIOS_STATE_SAFE;
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t->power_supply_state = SMBIOS_STATE_SAFE;
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t->thermal_state = SMBIOS_STATE_SAFE;
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t->security_status = SMBIOS_SECURITY_NONE;
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len = t->length + smbios_string_table_len(t->eos);
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*current += len;
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unmap_sysmem(t);
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return len;
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}
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static void smbios_write_type4_dm(struct smbios_type4 *t)
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{
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u16 processor_family = SMBIOS_PROCESSOR_FAMILY_UNKNOWN;
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const char *vendor = "Unknown";
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const char *name = "Unknown";
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#ifdef CONFIG_CPU
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char processor_name[49];
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char vendor_name[49];
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struct udevice *dev = NULL;
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uclass_find_first_device(UCLASS_CPU, &dev);
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if (dev) {
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struct cpu_platdata *plat = dev_get_parent_platdata(dev);
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if (plat->family)
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processor_family = plat->family;
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t->processor_id[0] = plat->id[0];
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t->processor_id[1] = plat->id[1];
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if (!cpu_get_vendor(dev, vendor_name, sizeof(vendor_name)))
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vendor = vendor_name;
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if (!cpu_get_desc(dev, processor_name, sizeof(processor_name)))
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name = processor_name;
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}
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#endif
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t->processor_family = processor_family;
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t->processor_manufacturer = smbios_add_string(t->eos, vendor);
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t->processor_version = smbios_add_string(t->eos, name);
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}
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static int smbios_write_type4(ulong *current, int handle)
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{
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struct smbios_type4 *t;
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int len = sizeof(struct smbios_type4);
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t = map_sysmem(*current, len);
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memset(t, 0, sizeof(struct smbios_type4));
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fill_smbios_header(t, SMBIOS_PROCESSOR_INFORMATION, len, handle);
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t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL;
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smbios_write_type4_dm(t);
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t->status = SMBIOS_PROCESSOR_STATUS_ENABLED;
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t->processor_upgrade = SMBIOS_PROCESSOR_UPGRADE_NONE;
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t->l1_cache_handle = 0xffff;
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t->l2_cache_handle = 0xffff;
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t->l3_cache_handle = 0xffff;
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t->processor_family2 = t->processor_family;
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len = t->length + smbios_string_table_len(t->eos);
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*current += len;
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unmap_sysmem(t);
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return len;
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}
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static int smbios_write_type32(ulong *current, int handle)
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{
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struct smbios_type32 *t;
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int len = sizeof(struct smbios_type32);
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t = map_sysmem(*current, len);
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memset(t, 0, sizeof(struct smbios_type32));
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fill_smbios_header(t, SMBIOS_SYSTEM_BOOT_INFORMATION, len, handle);
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*current += len;
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unmap_sysmem(t);
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return len;
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}
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static int smbios_write_type127(ulong *current, int handle)
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{
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struct smbios_type127 *t;
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int len = sizeof(struct smbios_type127);
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t = map_sysmem(*current, len);
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memset(t, 0, sizeof(struct smbios_type127));
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fill_smbios_header(t, SMBIOS_END_OF_TABLE, len, handle);
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*current += len;
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unmap_sysmem(t);
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return len;
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}
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static smbios_write_type smbios_write_funcs[] = {
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smbios_write_type0,
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smbios_write_type1,
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smbios_write_type2,
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smbios_write_type3,
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smbios_write_type4,
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smbios_write_type32,
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smbios_write_type127
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};
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ulong write_smbios_table(ulong addr)
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{
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struct smbios_entry *se;
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ulong table_addr;
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ulong tables;
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int len = 0;
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int max_struct_size = 0;
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int handle = 0;
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char *istart;
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int isize;
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int i;
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/* 16 byte align the table address */
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addr = ALIGN(addr, 16);
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se = map_sysmem(addr, sizeof(struct smbios_entry));
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memset(se, 0, sizeof(struct smbios_entry));
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addr += sizeof(struct smbios_entry);
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addr = ALIGN(addr, 16);
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tables = addr;
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/* populate minimum required tables */
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for (i = 0; i < ARRAY_SIZE(smbios_write_funcs); i++) {
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int tmp = smbios_write_funcs[i]((ulong *)&addr, handle++);
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max_struct_size = max(max_struct_size, tmp);
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len += tmp;
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}
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memcpy(se->anchor, "_SM_", 4);
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se->length = sizeof(struct smbios_entry);
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se->major_ver = SMBIOS_MAJOR_VER;
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se->minor_ver = SMBIOS_MINOR_VER;
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se->max_struct_size = max_struct_size;
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memcpy(se->intermediate_anchor, "_DMI_", 5);
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se->struct_table_length = len;
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/*
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* We must use a pointer here so things work correctly on sandbox. The
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* user of this table is not aware of the mapping of addresses to
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* sandbox's DRAM buffer.
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*/
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table_addr = (ulong)map_sysmem(tables, 0);
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if (sizeof(table_addr) > sizeof(u32) && table_addr > (ulong)UINT_MAX) {
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/*
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* We need to put this >32-bit pointer into the table but the
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* field is only 32 bits wide.
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*/
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printf("WARNING: SMBIOS table_address overflow %llx\n",
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(unsigned long long)table_addr);
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table_addr = 0;
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}
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se->struct_table_address = table_addr;
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se->struct_count = handle;
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/* calculate checksums */
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istart = (char *)se + SMBIOS_INTERMEDIATE_OFFSET;
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isize = sizeof(struct smbios_entry) - SMBIOS_INTERMEDIATE_OFFSET;
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se->intermediate_checksum = table_compute_checksum(istart, isize);
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se->checksum = table_compute_checksum(se, sizeof(struct smbios_entry));
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unmap_sysmem(se);
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return addr;
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}
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