Hannah Williams (hannah.williams@intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/15051
-gerrit
commit 1bc40c673516fb9ce6487643b22e8479d6b6f72a Author: Hannah Williams hannah.williams@intel.com Date: Mon Apr 18 13:47:08 2016 -0700
soc/apollolake: SOC specific c-state table
Change-Id: I5f82cdc4b34a53b5184ef1e918cae15a1df6cc5e Signed-off-by: Hannah Williams hannah.williams@intel.com --- src/soc/intel/apollolake/Kconfig | 1 + src/soc/intel/apollolake/acpi.c | 36 ++++++++++++++++++++++++++++++++++++ src/soc/intel/apollolake/chip.c | 2 ++ 3 files changed, 39 insertions(+)
diff --git a/src/soc/intel/apollolake/Kconfig b/src/soc/intel/apollolake/Kconfig index 4643887..52a00d9 100644 --- a/src/soc/intel/apollolake/Kconfig +++ b/src/soc/intel/apollolake/Kconfig @@ -39,6 +39,7 @@ config CPU_SPECIFIC_OPTIONS select SMM_TSEG select SOC_INTEL_COMMON select SOC_INTEL_COMMON_SMI + select SOC_INTEL_COMMON_ACPI select SPI_FLASH select UDELAY_TSC select TSC_CONSTANT_RATE diff --git a/src/soc/intel/apollolake/acpi.c b/src/soc/intel/apollolake/acpi.c index 4d610f8..fe5ebf0 100644 --- a/src/soc/intel/apollolake/acpi.c +++ b/src/soc/intel/apollolake/acpi.c @@ -26,6 +26,14 @@ #include <soc/pm.h> #include <soc/nvs.h>
+#define CSTATE_RES(address_space, width, offset, address) \ + { \ + .space_id = address_space, \ + .bit_width = width, \ + .bit_offset = offset, \ + .addrl = address, \ + } + unsigned long acpi_fill_mcfg(unsigned long current) { /* PCI Segment Group 0, Start Bus Number 0, End Bus Number is 255 */ @@ -157,3 +165,31 @@ void southbridge_inject_dsdt(device_t device) acpigen_pop_len(); } } +#define CSTATE_REG(address_space, bit_width, bit_offset, access_size, address) +static acpi_cstate_t cstate_map[] = { + { + /* C1 */ + .ctype = 1, /* ACPI C1 */ + .latency = 1, + .power = 1000, + .resource = CSTATE_RES(ACPI_ADDRESS_SPACE_FIXED, 0, 0, 0), + }, + { + .ctype = 2, /* ACPI C2 */ + .latency = 50, + .power = 10, + .resource = CSTATE_RES(ACPI_ADDRESS_SPACE_IO, 8, 0, 0x415), + }, + { + .ctype = 3, /* ACPI C3 */ + .latency = 150, + .power = 10, + .resource = CSTATE_RES(ACPI_ADDRESS_SPACE_IO, 8, 0, 0x419), + } +}; + +acpi_cstate_t *get_cstate_map(int *entries) +{ + *entries = ARRAY_SIZE(cstate_map); + return(cstate_map); +} diff --git a/src/soc/intel/apollolake/chip.c b/src/soc/intel/apollolake/chip.c index f56e1f2..a9edbbb 100644 --- a/src/soc/intel/apollolake/chip.c +++ b/src/soc/intel/apollolake/chip.c @@ -16,6 +16,7 @@ * GNU General Public License for more details. */
+#include <arch/acpi.h> #include <bootstate.h> #include <cbmem.h> #include <console/console.h> @@ -56,6 +57,7 @@ static struct device_operations cpu_bus_ops = { .enable_resources = DEVICE_NOOP, .init = apollolake_init_cpus, .scan_bus = NULL, + .acpi_fill_ssdt_generator = generate_cpu_entries, };
static void enable_dev(device_t dev)