diff options
| author | Richard Spiegel <richard.spiegel@amd.corp-partner.google.com> | 2018-06-14 14:57:54 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2018-06-21 15:47:31 +0000 |
| commit | 35282a0f1b059a42a5a2abef03b559a719cd230f (patch) | |
| tree | 9bc8d64627f266541f7d5062145e3f86c3279705 /src/soc/amd/stoneyridge/southbridge.c | |
| parent | cd7dfaf3b03a972dedb5f04b33719fd5c6042f51 (diff) | |
soc/amd/stoneyridge/southbridge.c: Store PM related registers in cbmem
PM registers used for generating SWS values are being stored in a static
variable within southbridge.c. In order to have it available for any source
involved in building the platform, move the storage to cbmem, using id
CBMEM_ID_POWER_STATE. Also add a variable that informs from which state
the system is waking from, extracted from register ACPI_PM1_CNT_BLK. This
variable will later be useful in detecting failed S3 resume.
BUG=b:80119811
TEST=Add code to print SWS parameters and state it's waking from. Build
and boot grunt, suspend and resume, check output for valid values. Remove
the print code.
Change-Id: Ib27a743b7e7f8c94918caf7ba5efd473f4054986
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/27109
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/amd/stoneyridge/southbridge.c')
| -rw-r--r-- | src/soc/amd/stoneyridge/southbridge.c | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/src/soc/amd/stoneyridge/southbridge.c b/src/soc/amd/stoneyridge/southbridge.c index 02daa26046..91435ad42b 100644 --- a/src/soc/amd/stoneyridge/southbridge.c +++ b/src/soc/amd/stoneyridge/southbridge.c @@ -662,25 +662,24 @@ static void sb_log_pm1_status(uint16_t pm1_sts) elog_add_event_wake(ELOG_WAKE_SOURCE_PCIE, 0); } -struct soc_amd_sws { - uint16_t pm1_sts; - uint16_t pm1_en; - uint32_t gpe0_sts; - uint32_t gpe0_en; -}; - -static struct soc_amd_sws sws; - static void sb_save_sws(uint16_t pm1_status) { + struct soc_power_reg *sws; uint32_t reg32; + uint16_t reg16; - sws.pm1_sts = pm1_status; - sws.pm1_en = inw(ACPI_PM1_EN); + sws = cbmem_add(CBMEM_ID_POWER_STATE, sizeof(struct soc_power_reg)); + if (sws == NULL) + return; + sws->pm1_sts = pm1_status; + sws->pm1_en = inw(ACPI_PM1_EN); reg32 = inl(ACPI_GPE0_STS); outl(ACPI_GPE0_STS, reg32); - sws.gpe0_sts = reg32; - sws.gpe0_en = inl(ACPI_GPE0_EN); + sws->gpe0_sts = reg32; + sws->gpe0_en = inl(ACPI_GPE0_EN); + reg16 = inw(ACPI_PM1_CNT_BLK); + reg16 &= SLP_TYP; + sws->wake_from = reg16 >> SLP_TYP_SHIFT; } static void sb_clear_pm1_status(void) @@ -715,20 +714,24 @@ static int get_index_bit(uint32_t value, uint16_t limit) static void set_nvs_sws(void *unused) { + struct soc_power_reg *sws; struct global_nvs_t *gnvs; int index; + sws = cbmem_find(CBMEM_ID_POWER_STATE); + if (sws == NULL) + return; gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS); if (gnvs == NULL) return; - index = get_index_bit(sws.pm1_sts & sws.pm1_en, PM1_LIMIT); + index = get_index_bit(sws->pm1_sts & sws->pm1_en, PM1_LIMIT); if (index < 0) gnvs->pm1i = ~0ULL; else gnvs->pm1i = index; - index = get_index_bit(sws.gpe0_sts & sws.gpe0_en, GPE0_LIMIT); + index = get_index_bit(sws->gpe0_sts & sws->gpe0_en, GPE0_LIMIT); if (index < 0) gnvs->gpei = ~0ULL; else |