diff options
Diffstat (limited to 'src/arch/x86/boot')
| -rw-r--r-- | src/arch/x86/boot/acpi.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/src/arch/x86/boot/acpi.c b/src/arch/x86/boot/acpi.c index bfdb18fbf8..03d40d0be3 100644 --- a/src/arch/x86/boot/acpi.c +++ b/src/arch/x86/boot/acpi.c @@ -723,8 +723,6 @@ void acpi_create_fadt(acpi_fadt_t *fadt,acpi_facs_t *facs, void *dsdt) } #endif -extern const unsigned char AmlCode[]; - unsigned long __attribute__ ((weak)) fw_cfg_acpi_tables(unsigned long start) { return 0; @@ -741,13 +739,13 @@ unsigned long write_acpi_tables(unsigned long start) acpi_facs_t *facs; acpi_header_t *slic_file, *slic; acpi_header_t *ssdt; - acpi_header_t *dsdt; + acpi_header_t *dsdt_file, *dsdt; acpi_mcfg_t *mcfg; acpi_tcpa_t *tcpa; acpi_madt_t *madt; struct device *dev; unsigned long fw; - size_t slic_size; + size_t slic_size, dsdt_size; char oem_id[6], oem_table_id[8]; current = start; @@ -759,6 +757,21 @@ unsigned long write_acpi_tables(unsigned long start) if (fw) return fw; + dsdt_file = cbfs_get_file_content(CBFS_DEFAULT_MEDIA, + CONFIG_CBFS_PREFIX "/dsdt.aml", + CBFS_TYPE_RAW, &dsdt_size); + if (!dsdt_file) { + printk(BIOS_ERR, "No DSDT file, skipping ACPI tables\n"); + return current; + } + + if (dsdt_file->length > dsdt_size + || dsdt_file->length < sizeof (acpi_header_t) + || memcmp(dsdt_file->signature, "DSDT", 4) != 0) { + printk(BIOS_ERR, "Invalid DSDT file, skipping ACPI tables\n"); + return current; + } + slic_file = cbfs_boot_map_with_leak(CONFIG_CBFS_PREFIX "/slic", CBFS_TYPE_RAW, &slic_size); if (slic_file @@ -804,7 +817,7 @@ unsigned long write_acpi_tables(unsigned long start) printk(BIOS_DEBUG, "ACPI: * DSDT\n"); dsdt = (acpi_header_t *) current; - memcpy(dsdt, &AmlCode, sizeof(acpi_header_t)); + memcpy(dsdt, dsdt_file, sizeof(acpi_header_t)); if (dsdt->length >= sizeof(acpi_header_t)) { current += sizeof(acpi_header_t); @@ -815,7 +828,7 @@ unsigned long write_acpi_tables(unsigned long start) } current = (unsigned long) acpigen_get_current(); memcpy((char *)current, - (char *)&AmlCode + sizeof(acpi_header_t), + (char *)dsdt_file + sizeof(acpi_header_t), dsdt->length - sizeof(acpi_header_t)); current += dsdt->length - sizeof(acpi_header_t); |