On Sat, Dec 23, 2023 at 12:53 AM Heinrich Schuchardt <xypron.g...@gmx.de> wrote: > > U-Boot can either generated an SMBIOS table or copy it from a prior boot > stage, e.g. QEMU. > > Provide a command to display the SMBIOS information. > > Currently only type 1 and 2 are translated to human readable text. > Other types may be added later. Currently only a hexdump and the list of > strings is provided for these. > > Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de> > --- > cmd/Kconfig | 7 ++ > cmd/Makefile | 1 + > cmd/smbios.c | 191 +++++++++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 199 insertions(+) > create mode 100644 cmd/smbios.c > > diff --git a/cmd/Kconfig b/cmd/Kconfig > index 5a7678f0ac..580aeec8ee 100644 > --- a/cmd/Kconfig > +++ b/cmd/Kconfig > @@ -206,6 +206,13 @@ config CMD_SBI > help > Display information about the SBI implementation. > > +config CMD_SMBIOS > + bool "smbios" > + depends on SMBIOS > + default y
Should this be default? Maybe default if SMBIOS or similar? > + help > + Display the SMBIOS information. > + > endmenu > > menu "Boot commands" > diff --git a/cmd/Makefile b/cmd/Makefile > index 5ed0e4011d..8a5dfd8ca9 100644 > --- a/cmd/Makefile > +++ b/cmd/Makefile > @@ -168,6 +168,7 @@ obj-$(CONFIG_CMD_SETEXPR) += setexpr.o > obj-$(CONFIG_CMD_SETEXPR_FMT) += printf.o > obj-$(CONFIG_CMD_SPI) += spi.o > obj-$(CONFIG_CMD_STRINGS) += strings.o > +obj-$(CONFIG_CMD_SMBIOS) += smbios.o > obj-$(CONFIG_CMD_SMC) += smccc.o > obj-$(CONFIG_CMD_SYSBOOT) += sysboot.o > obj-$(CONFIG_CMD_STACKPROTECTOR_TEST) += stackprot_test.o > diff --git a/cmd/smbios.c b/cmd/smbios.c > new file mode 100644 > index 0000000000..63f908e92c > --- /dev/null > +++ b/cmd/smbios.c > @@ -0,0 +1,191 @@ > +// SPDX-License-Identifier: GPL-2.0-or-later > +/* > + * The 'smbios' command displays information from the SMBIOS table. > + * > + * Copyright (c) 2023, Heinrich Schuchardt <xypron.g...@gmx.de> > + */ > + > +#include <command.h> > +#include <hexdump.h> > +#include <mapmem.h> > +#include <smbios.h> > +#include <tables_csum.h> > +#include <asm/global_data.h> > + > +DECLARE_GLOBAL_DATA_PTR; > + > +/** > + * smbios_get_string() - get SMBIOS string from table > + * > + * @table: SMBIOS table > + * @index: index of the string > + * Return: address of string, may point to empty string > + */ > +static const char *smbios_get_string(void *table, int index) > +{ > + const char *str = (char *)table + > + ((struct smbios_header *)table)->length; > + > + if (!*str) > + ++str; > + for (--index; *str && index; --index) > + str += strlen(str) + 1; > + > + return str; > +} > + > +static struct smbios_header *next_table(struct smbios_header *table) > +{ > + const char *str; > + > + if (table->type == SMBIOS_END_OF_TABLE) > + return NULL; > + > + str = smbios_get_string(table, 0); > + return (struct smbios_header *)(++str); > +} > + > +static void smbios_print_generic(struct smbios_header *table) > +{ > + char *str = (char *)table + table->length; > + > + if (CONFIG_IS_ENABLED(HEXDUMP)) { > + printf("Header and Data:\n"); > + print_hex_dump("\t", DUMP_PREFIX_OFFSET, 16, 1, > + table, table->length, false); > + } > + if (*str) { > + printf("Strings:\n"); > + for (int index = 1; *str; ++index) { > + printf("\tString %u: %s\n", index, str); > + str += strlen(str) + 1; > + } > + } > +} > + > +void smbios_print_str(const char *label, void *table, u8 index) > +{ > + printf("\t%s: %s\n", label, smbios_get_string(table, index)); > +} > + > +static void smbios_print_type1(struct smbios_type1 *table) > +{ > + printf("System Information\n"); > + smbios_print_str("Manufacturer", table, table->manufacturer); > + smbios_print_str("Product Name", table, table->product_name); > + smbios_print_str("Version", table, table->version); > + smbios_print_str("Serial Number", table, table->serial_number); > + if (table->length >= 0x19) { > + printf("\tUUID %pUl\n", table->uuid); > + smbios_print_str("Wake Up Type", table, table->serial_number); > + } > + if (table->length >= 0x1b) { > + smbios_print_str("Serial Number", table, > table->serial_number); > + smbios_print_str("SKU Number", table, table->sku_number); > + } > +} > + > +static void smbios_print_type2(struct smbios_type2 *table) > +{ > + u16 *handle; > + > + printf("Base Board Information\n"); > + smbios_print_str("Manufacturer", table, table->manufacturer); > + smbios_print_str("Product Name", table, table->product_name); > + smbios_print_str("Version", table, table->version); > + smbios_print_str("Serial Number", table, table->serial_number); > + smbios_print_str("Asset Tag", table, table->asset_tag_number); > + printf("\tFeature Flags: 0x%2x\n", table->feature_flags); > + smbios_print_str("Chassis Location", table, table->chassis_location); > + printf("\tChassis Handle: 0x%2x\n", table->chassis_handle); > + smbios_print_str("Board Type", table, table->board_type); > + printf("\tContained Object Handles: "); > + handle = (void *)table->eos; > + for (int i = 0; i < table->number_contained_objects; ++i) > + printf("0x%04x ", handle[i]); > + printf("\n"); > +} > + > +static void smbios_print_type127(struct smbios_type127 *table) > +{ > + printf("End Of Table\n"); > +} > + > +static int do_smbios(struct cmd_tbl *cmdtp, int flag, int argc, > + char *const argv[]) > +{ > + ulong addr; > + void *entry; > + u32 size; > + char version[12]; > + struct smbios_header *table; > + static const char smbios_sig[] = "_SM_"; > + static const char smbios3_sig[] = "_SM3_"; > + size_t count = 0; > + u32 max_struct_size; > + > + addr = gd_smbios_start(); > + if (!addr) { > + log_warning("SMBIOS not available\n"); > + return CMD_RET_FAILURE; > + } > + entry = map_sysmem(addr, 0); > + if (!memcmp(entry, smbios3_sig, sizeof(smbios3_sig) - 1)) { > + struct smbios3_entry *entry3 = entry; > + > + table = (void *)(uintptr_t)entry3->struct_table_address; > + snprintf(version, sizeof(version), "%d.%d.%d", > + entry3->major_ver, entry3->minor_ver, > entry3->doc_rev); > + table = (void *)(uintptr_t)entry3->struct_table_address; > + size = entry3->length; > + max_struct_size = entry3->max_struct_size; > + } else if (!memcmp(entry, smbios_sig, sizeof(smbios_sig) - 1)) { > + struct smbios_entry *entry2 = entry; > + > + snprintf(version, sizeof(version), "%d.%d", > + entry2->major_ver, entry2->minor_ver); > + table = (void *)(uintptr_t)entry2->struct_table_address; > + size = entry2->length; > + max_struct_size = entry2->max_struct_size; > + } else { > + log_err("Unknown SMBIOS anchor format\n"); > + return CMD_RET_FAILURE; > + } > + if (table_compute_checksum(entry, size)) { > + log_err("Invalid anchor checksum\n"); > + return CMD_RET_FAILURE; > + } > + printf("SMBIOS %s present.\n", version); > + > + for (struct smbios_header *pos = table; pos; pos = next_table(pos)) > + ++count; > + printf("%zd structures occupying %d bytes\n", count, max_struct_size); > + printf("Table at 0x%llx\n", (unsigned long long)map_to_sysmem(table)); > + > + for (struct smbios_header *pos = table; pos; pos = next_table(pos)) { > + printf("\nHandle 0x%04x, DMI type %d, %d bytes at 0x%llx\n", > + pos->handle, pos->type, pos->length, > + (unsigned long long)map_to_sysmem(pos)); > + switch (pos->type) { > + case 1: > + smbios_print_type1((struct smbios_type1 *)pos); > + break; > + case 2: > + smbios_print_type2((struct smbios_type2 *)pos); > + break; > + case 127: > + smbios_print_type127((struct smbios_type127 *)pos); > + break; > + default: > + smbios_print_generic(pos); > + break; > + } > + } > + > + return CMD_RET_SUCCESS; > +} > + > +U_BOOT_LONGHELP(smbios, "- display SMBIOS information"); > + > +U_BOOT_CMD(smbios, 1, 0, do_smbios, "display SMBIOS information", > + smbios_help_text); > -- > 2.43.0 >