diff options
Diffstat (limited to 'src/arch/i386/boot/acpi.c')
| -rw-r--r-- | src/arch/i386/boot/acpi.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/arch/i386/boot/acpi.c b/src/arch/i386/boot/acpi.c index 4c21231467..40fdf3d368 100644 --- a/src/arch/i386/boot/acpi.c +++ b/src/arch/i386/boot/acpi.c @@ -24,6 +24,7 @@ #include <console/console.h> #include <string.h> #include <arch/acpi.h> +#include <arch/acpigen.h> #include <device/pci.h> u8 acpi_checksum(u8 *table, u32 length) @@ -181,6 +182,34 @@ void acpi_create_mcfg(acpi_mcfg_t *mcfg) header->checksum = acpi_checksum((void *)mcfg, header->length); } +/* this can be overriden by platform ACPI setup code, + if it calls acpi_create_ssdt_generator */ +unsigned long __attribute__((weak)) acpi_fill_ssdt_generator(unsigned long current, + char *oem_table_id) { + return current; +} + +void acpi_create_ssdt_generator(acpi_header_t *ssdt, char *oem_table_id) +{ + unsigned long current=(unsigned long)ssdt+sizeof(acpi_header_t); + memset((void *)ssdt, 0, sizeof(acpi_header_t)); + memcpy(&ssdt->signature, SSDT_NAME, 4); + ssdt->revision = 2; + memcpy(&ssdt->oem_id, OEM_ID, 6); + memcpy(&ssdt->oem_table_id, oem_table_id, 8); + ssdt->oem_revision = 42; + memcpy(&ssdt->asl_compiler_id, "GENAML", 4); + ssdt->asl_compiler_revision = 42; + ssdt->length = sizeof(acpi_header_t); + + acpigen_set_current((unsigned char *) current); + current = acpi_fill_ssdt_generator(current, oem_table_id); + + /* recalculate length */ + ssdt->length = current - (unsigned long)ssdt; + ssdt->checksum = acpi_checksum((void *)ssdt, ssdt->length); +} + int acpi_create_srat_lapic(acpi_srat_lapic_t *lapic, u8 node, u8 apic) { lapic->type=0; |