diff options
Diffstat (limited to 'src/arch/arm64/tables.c')
| -rw-r--r-- | src/arch/arm64/tables.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/arch/arm64/tables.c b/src/arch/arm64/tables.c index c66612b7f2..059d695e5e 100644 --- a/src/arch/arm64/tables.c +++ b/src/arch/arm64/tables.c @@ -6,6 +6,9 @@ #include <boot/tables.h> #include <bootmem.h> #include <cbmem.h> +#include <console/console.h> +#include <smbios.h> +#include <string.h> #include <symbols.h> static void write_acpi_table(void) @@ -18,10 +21,40 @@ static void write_acpi_table(void) printk(BIOS_DEBUG, "ACPI tables: %ld bytes.\n", acpi_end - acpi_start); } +static void write_smbios_table(void) +{ + unsigned long smbios_begin, smbios_end; + +#define MAX_SMBIOS_SIZE (32 * KiB) + + smbios_begin = (unsigned long)cbmem_add(CBMEM_ID_SMBIOS, MAX_SMBIOS_SIZE); + if (!smbios_begin) { + printk(BIOS_ERR, "Out of memory for SMBIOS tables\n"); + return; + } + + /* + * Clear the entire region to ensure the unused space doesn't + * contain garbage from a previous boot, like stale table + * signatures that could be found by the OS. + */ + memset((void *)smbios_begin, 0, MAX_SMBIOS_SIZE); + + smbios_end = smbios_write_tables(smbios_begin); + + if (smbios_end > (smbios_begin + MAX_SMBIOS_SIZE)) + printk(BIOS_ERR, "Increase SMBIOS size\n"); + + printk(BIOS_DEBUG, "SMBIOS tables: %ld bytes.\n", smbios_end - smbios_begin); +} + void arch_write_tables(uintptr_t coreboot_table) { if (CONFIG(HAVE_ACPI_TABLES)) write_acpi_table(); + + if (CONFIG(GENERATE_SMBIOS_TABLES)) + write_smbios_table(); } void bootmem_arch_add_ranges(void) |