diff options
Diffstat (limited to 'src/southbridge/intel/lynxpoint/lpc.c')
| -rw-r--r-- | src/southbridge/intel/lynxpoint/lpc.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/southbridge/intel/lynxpoint/lpc.c b/src/southbridge/intel/lynxpoint/lpc.c index 05b4d601af..d1a7203041 100644 --- a/src/southbridge/intel/lynxpoint/lpc.c +++ b/src/southbridge/intel/lynxpoint/lpc.c @@ -36,6 +36,8 @@ #include <string.h> #include "nvs.h" #include "pch.h" +#include <arch/acpigen.h> +#include <cbmem.h> #define NMI_OFF 0 @@ -741,6 +743,63 @@ static void set_subsystem(device_t dev, unsigned vendor, unsigned device) } } +static unsigned long southbridge_fill_ssdt(unsigned long current, const char *oem_table_id) +{ + global_nvs_t *gnvs = cbmem_add (CBMEM_ID_ACPI_GNVS, sizeof (*gnvs)); + + if (gnvs) { + int scopelen; + acpi_create_gnvs(gnvs); + acpi_save_gnvs((unsigned long)gnvs); + /* And tell SMI about it */ + smm_setup_structures(gnvs, NULL, NULL); + + /* Add it to SSDT. */ + scopelen = acpigen_write_scope("\\"); + scopelen += acpigen_write_name_dword("NVSA", (u32) gnvs); + acpigen_patch_len(scopelen - 1); + } + + return (unsigned long) (acpigen_get_current()); +} + +#define ALIGN_CURRENT current = (ALIGN(current, 16)) +static unsigned long southbridge_write_acpi_tables(unsigned long start, struct acpi_rsdp *rsdp) +{ + unsigned long current; + acpi_hpet_t *hpet; + acpi_header_t *ssdt; + + current = start; + + /* Align ACPI tables to 16byte */ + ALIGN_CURRENT; + + /* + * We explicitly add these tables later on: + */ + printk(BIOS_DEBUG, "ACPI: * HPET\n"); + + hpet = (acpi_hpet_t *) current; + current += sizeof(acpi_hpet_t); + ALIGN_CURRENT; + acpi_create_intel_hpet(hpet); + acpi_add_table(rsdp, hpet); + + ALIGN_CURRENT; + + printk(BIOS_DEBUG, "ACPI: * SSDT2\n"); + ssdt = (acpi_header_t *)current; + acpi_create_serialio_ssdt(ssdt); + current += ssdt->length; + acpi_add_table(rsdp, ssdt); + ALIGN_CURRENT; + + printk(BIOS_DEBUG, "current = %lx\n", current); + return current; +} + + static struct pci_operations pci_ops = { .set_subsystem = set_subsystem, }; @@ -749,6 +808,8 @@ static struct device_operations device_ops = { .read_resources = pch_lpc_read_resources, .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, + .acpi_fill_ssdt_generator = southbridge_fill_ssdt, + .write_acpi_tables = southbridge_write_acpi_tables, .init = lpc_init, .enable = pch_lpc_enable, .scan_bus = scan_static_bus, |