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authorFurquan Shaikh <furquan@chromium.org>2017-10-16 22:19:13 -0700
committerFurquan Shaikh <furquan@google.com>2017-10-19 00:42:58 +0000
commitab6201835acb26c00f2975f9bad35c6024e3a0bf (patch)
treeff88e167168614f28042814e985d1748fa964906 /src/soc/intel/common
parente48fb54b161f306966a9d878ab6d103554b2264a (diff)
downloadcoreboot-ab6201835acb26c00f2975f9bad35c6024e3a0bf.tar.xz
soc/intel/common/block/pmc: Add helper routines to read/write PM1_CNT
This change adds and uses helper routines for reading and writing PM1_CNT register. BUG=b:67874513 Change-Id: I69b9347ab54a392b67ba733eb00922583dc1ee5f Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/22081 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'src/soc/intel/common')
-rw-r--r--src/soc/intel/common/block/include/intelblocks/pmclib.h3
-rw-r--r--src/soc/intel/common/block/pmc/pmclib.c30
2 files changed, 24 insertions, 9 deletions
diff --git a/src/soc/intel/common/block/include/intelblocks/pmclib.h b/src/soc/intel/common/block/include/intelblocks/pmclib.h
index 7c10926e48..a045bbea58 100644
--- a/src/soc/intel/common/block/include/intelblocks/pmclib.h
+++ b/src/soc/intel/common/block/include/intelblocks/pmclib.h
@@ -47,6 +47,9 @@ int soc_prev_sleep_state(const struct chipset_power_state *ps,
void pmc_update_pm1_enable(uint16_t events);
uint16_t pmc_read_pm1_enable(void);
+uint32_t pmc_read_pm1_control(void);
+void pmc_write_pm1_control(uint32_t pm1_cnt);
+
/*
* Function to print, clear, and return SMI status bits in SMI_STS
* register. This function internally calls pmc_reset_smi_status with
diff --git a/src/soc/intel/common/block/pmc/pmclib.c b/src/soc/intel/common/block/pmc/pmclib.c
index c2a6bef86e..82ce29261f 100644
--- a/src/soc/intel/common/block/pmc/pmclib.c
+++ b/src/soc/intel/common/block/pmc/pmclib.c
@@ -155,18 +155,28 @@ void pmc_enable_pm1(uint16_t events)
outw(events, ACPI_BASE_ADDRESS + PM1_EN);
}
+uint32_t pmc_read_pm1_control(void)
+{
+ return inl(ACPI_BASE_ADDRESS + PM1_CNT);
+}
+
+void pmc_write_pm1_control(uint32_t pm1_cnt)
+{
+ outl(pm1_cnt, ACPI_BASE_ADDRESS + PM1_CNT);
+}
+
void pmc_enable_pm1_control(uint32_t mask)
{
- uint32_t pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT);
+ uint32_t pm1_cnt = pmc_read_pm1_control();
pm1_cnt |= mask;
- outl(pm1_cnt, ACPI_BASE_ADDRESS + PM1_CNT);
+ pmc_write_pm1_control(pm1_cnt);
}
void pmc_disable_pm1_control(uint32_t mask)
{
- uint32_t pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT);
+ uint32_t pm1_cnt = pmc_read_pm1_control();
pm1_cnt &= ~mask;
- outl(pm1_cnt, ACPI_BASE_ADDRESS + PM1_CNT);
+ pmc_write_pm1_control(pm1_cnt);
}
static uint16_t reset_pm1_status(void)
@@ -357,7 +367,7 @@ static int pmc_prev_sleep_state(const struct chipset_power_state *ps)
}
/* Clear SLP_TYP. */
- outl(ps->pm1_cnt & ~(SLP_TYP), ACPI_BASE_ADDRESS + PM1_CNT);
+ pmc_write_pm1_control(ps->pm1_cnt & ~(SLP_TYP));
}
return soc_prev_sleep_state(ps, prev_sleep_state);
}
@@ -394,7 +404,7 @@ void pmc_fill_pm_reg_info(struct chipset_power_state *ps)
ps->pm1_sts = inw(ACPI_BASE_ADDRESS + PM1_STS);
ps->pm1_en = inw(ACPI_BASE_ADDRESS + PM1_EN);
- ps->pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT);
+ ps->pm1_cnt = pmc_read_pm1_control();
printk(BIOS_DEBUG, "pm1_sts: %04x pm1_en: %04x pm1_cnt: %08x\n",
ps->pm1_sts, ps->pm1_en, ps->pm1_cnt);
@@ -470,7 +480,7 @@ int vboot_platform_is_resuming(void)
if (!(inw(ACPI_BASE_ADDRESS + PM1_STS) & WAK_STS))
return 0;
- return acpi_sleep_from_pm1(inl(ACPI_BASE_ADDRESS + PM1_CNT)) == ACPI_S3;
+ return acpi_sleep_from_pm1(pmc_read_pm1_control()) == ACPI_S3;
}
/* Read and clear GPE status (defined in arch/acpi.h) */
@@ -512,8 +522,10 @@ int acpi_get_gpe(int gpe)
*/
void vboot_platform_prepare_reboot(void)
{
- const uint16_t port = ACPI_BASE_ADDRESS + PM1_CNT;
- outl((inl(port) & ~(SLP_TYP)) | (SLP_TYP_S5 << SLP_TYP_SHIFT), port);
+ uint32_t pm1_cnt;
+ pm1_cnt = (pmc_read_pm1_control() & ~(SLP_TYP)) |
+ (SLP_TYP_S5 << SLP_TYP_SHIFT);
+ pmc_write_pm1_control(pm1_cnt);
}
void poweroff(void)