diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2020-08-14 15:08:10 -0600 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2020-08-17 17:40:01 +0000 |
| commit | a244eb3dad1e81a1a7d15cf43ca7f622345ac230 (patch) | |
| tree | 82bc9af863a4ed29e205d26a50dfbf8c1f9618fa /src/soc/amd | |
| parent | 746e598d07091b574036bbcb2d358fa0ebe5f875 (diff) | |
soc/amd/common: add acpi_fill_gnvs()
In order to reduce code duplication provide an acpi_fill_gnvs()
helper function. Intent is to move stoneyridge and picasso over
to using this common implementation instead of duplicating it.
BUG=b:159947207
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Change-Id: I21c6e2c24eaf42f31ae57c05df7f633d7dc266d9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44482
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/soc/amd')
| -rw-r--r-- | src/soc/amd/common/block/acpi/acpi.c | 38 | ||||
| -rw-r--r-- | src/soc/amd/common/block/include/amdblocks/acpi.h | 3 |
2 files changed, 41 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/acpi/acpi.c b/src/soc/amd/common/block/acpi/acpi.c index be331e3fea..0e6dabf150 100644 --- a/src/soc/amd/common/block/acpi/acpi.c +++ b/src/soc/amd/common/block/acpi/acpi.c @@ -113,6 +113,44 @@ void acpi_clear_pm_gpe_status(void) acpi_write32(MMIO_ACPI_GPE0_STS, acpi_read32(MMIO_ACPI_GPE0_STS)); } +static int get_index_bit(uint32_t value, uint16_t limit) +{ + uint16_t i; + uint32_t t; + + if (limit >= TOTAL_BITS(uint32_t)) + return -1; + + /* get a mask of valid bits. Ex limit = 3, set bits 0-2 */ + t = (1 << limit) - 1; + if ((value & t) == 0) + return -1; + t = 1; + for (i = 0; i < limit; i++) { + if (value & t) + break; + t <<= 1; + } + return i; +} + +void acpi_fill_gnvs(struct global_nvs *gnvs, const struct acpi_pm_gpe_state *state) +{ + int index; + + index = get_index_bit(state->pm1_sts & state->pm1_en, PM1_LIMIT); + if (index < 0) + gnvs->pm1i = ~0ULL; + else + gnvs->pm1i = index; + + index = get_index_bit(state->gpe0_sts & state->gpe0_en, GPE0_LIMIT); + if (index < 0) + gnvs->gpei = ~0ULL; + else + gnvs->gpei = index; +} + static void save_sws(uint16_t pm1_status) { struct soc_power_reg *sws; diff --git a/src/soc/amd/common/block/include/amdblocks/acpi.h b/src/soc/amd/common/block/include/amdblocks/acpi.h index 8f16054fd7..8d0e5f664e 100644 --- a/src/soc/amd/common/block/include/amdblocks/acpi.h +++ b/src/soc/amd/common/block/include/amdblocks/acpi.h @@ -4,6 +4,7 @@ #define __AMDBLOCKS_ACPI_H__ #include <types.h> +#include <soc/nvs.h> /* ACPI MMIO registers 0xfed80800 */ #define MMIO_ACPI_PM1_STS 0x00 @@ -32,6 +33,8 @@ void acpi_fill_pm_gpe_state(struct acpi_pm_gpe_state *state); void acpi_pm_gpe_add_events_print_events(const struct acpi_pm_gpe_state *state); /* Clear PM and GPE status registers. */ void acpi_clear_pm_gpe_status(void); +/* Fill GNVS object from PM GPE object. */ +void acpi_fill_gnvs(struct global_nvs *gnvs, const struct acpi_pm_gpe_state *state); void acpi_clear_pm1_status(void); |