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soc/intel/skylake: Move power_state functions to pmutil.c 

This change moves soc_fill_power_state and soc_prev_sleep_state to
pmutil.c. It allows the functions to be used across romstage and smm.

BUG=b:67874513

Change-Id: I375ac029520c2cdd52926f3ab3c2d5559936dd8c
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/22085
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Furquan Shaikh 2017-10-14 19:24:43 -07:00 committed by Furquan Shaikh
parent 2ce4ec0dcb
commit 3efeeb2c8f
3 changed files with 68 additions and 106 deletions
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68
src/soc/intel/skylake/pmutil.c
View File

@ -21,6 +21,7 @@
#define __SIMPLE_DEVICE__
#include <arch/acpi.h>
#include <arch/io.h>
#include <device/device.h>
#include <device/pci.h>
@ -247,3 +248,70 @@ int vbnv_cmos_failed(void)
{
return rtc_failure();
}
/* Return 0, 3, or 5 to indicate the previous sleep state. */
int soc_prev_sleep_state(const struct chipset_power_state *ps,
int prev_sleep_state)
{
/*
* Check for any power failure to determine if this a wake from
* S5 because the PCH does not set the WAK_STS bit when waking
* from a true G3 state.
*/
if (!(ps->pm1_sts & WAK_STS) &&
(ps->gen_pmcon_b & (PWR_FLR | SUS_PWR_FLR)))
prev_sleep_state = ACPI_S5;
/*
* If waking from S3 determine if deep S3 is enabled. If not,
* need to check both deep sleep well and normal suspend well.
* Otherwise just check deep sleep well.
*/
if (prev_sleep_state == ACPI_S3) {
/* PWR_FLR represents deep sleep power well loss. */
uint32_t mask = PWR_FLR;
/* If deep s3 isn't enabled check the suspend well too. */
if (!deep_s3_enabled())
mask |= SUS_PWR_FLR;
if (ps->gen_pmcon_b & mask)
prev_sleep_state = ACPI_S5;
}
return prev_sleep_state;
}
void soc_fill_power_state(struct chipset_power_state *ps)
{
uint16_t tcobase;
uint8_t *pmc;
tcobase = smbus_tco_regs();
ps->tco1_sts = inw(tcobase + TCO1_STS);
ps->tco2_sts = inw(tcobase + TCO2_STS);
printk(BIOS_DEBUG, "TCO_STS: %04x %04x\n",
ps->tco1_sts, ps->tco2_sts);
ps->gen_pmcon_a = pci_read_config32(PCH_DEV_PMC, GEN_PMCON_A);
ps->gen_pmcon_b = pci_read_config32(PCH_DEV_PMC, GEN_PMCON_B);
pmc = pmc_mmio_regs();
ps->gblrst_cause[0] = read32(pmc + GBLRST_CAUSE0);
ps->gblrst_cause[1] = read32(pmc + GBLRST_CAUSE1);
printk(BIOS_DEBUG, "GEN_PMCON: %08x %08x\n",
ps->gen_pmcon_a, ps->gen_pmcon_b);
printk(BIOS_DEBUG, "GBLRST_CAUSE: %08x %08x\n",
ps->gblrst_cause[0], ps->gblrst_cause[1]);
}
int acpi_get_sleep_type(void)
{
struct chipset_power_state *ps;
ps = pmc_get_power_state();
return ps->prev_sleep_state;
}

3
src/soc/intel/skylake/romstage/Makefile.inc
View File

@ -1,8 +1,5 @@
verstage-y += power_state.c
romstage-$(CONFIG_PLATFORM_USES_FSP1_1) += car_stage.S
romstage-y += pmc.c
romstage-y += power_state.c
romstage-$(CONFIG_PLATFORM_USES_FSP1_1) += romstage.c
romstage-$(CONFIG_PLATFORM_USES_FSP2_0) += romstage_fsp20.c
romstage-y += systemagent.c

103
src/soc/intel/skylake/romstage/power_state.c
View File

@ -1,103 +0,0 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Google Inc.
* Copyright (C) 2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/acpi.h>
#include <arch/io.h>
#include <cbmem.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_def.h>
#include <reg_script.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <soc/iomap.h>
#include <soc/smbus.h>
#include <soc/pci_devs.h>
#include <soc/pm.h>
#include <soc/pmc.h>
#include <soc/romstage.h>
#include <vboot/vboot_common.h>
#include <intelblocks/pmclib.h>
/* Return 0, 3, or 5 to indicate the previous sleep state. */
int soc_prev_sleep_state(const struct chipset_power_state *ps,
int prev_sleep_state)
{
/*
* Check for any power failure to determine if this a wake from
* S5 because the PCH does not set the WAK_STS bit when waking
* from a true G3 state.
*/
if (!(ps->pm1_sts & WAK_STS) &&
(ps->gen_pmcon_b & (PWR_FLR | SUS_PWR_FLR)))
prev_sleep_state = ACPI_S5;
/*
* If waking from S3 determine if deep S3 is enabled. If not,
* need to check both deep sleep well and normal suspend well.
* Otherwise just check deep sleep well.
*/
if (prev_sleep_state == ACPI_S3) {
/* PWR_FLR represents deep sleep power well loss. */
uint32_t mask = PWR_FLR;
/* If deep s3 isn't enabled check the suspend well too. */
if (!deep_s3_enabled())
mask |= SUS_PWR_FLR;
if (ps->gen_pmcon_b & mask)
prev_sleep_state = ACPI_S5;
}
return prev_sleep_state;
}
void soc_fill_power_state(struct chipset_power_state *ps)
{
uint16_t tcobase;
uint8_t *pmc;
tcobase = smbus_tco_regs();
ps->tco1_sts = inw(tcobase + TCO1_STS);
ps->tco2_sts = inw(tcobase + TCO2_STS);
printk(BIOS_DEBUG, "TCO_STS: %04x %04x\n",
ps->tco1_sts, ps->tco2_sts);
ps->gen_pmcon_a = pci_read_config32(PCH_DEV_PMC, GEN_PMCON_A);
ps->gen_pmcon_b = pci_read_config32(PCH_DEV_PMC, GEN_PMCON_B);
pmc = pmc_mmio_regs();
ps->gblrst_cause[0] = read32(pmc + GBLRST_CAUSE0);
ps->gblrst_cause[1] = read32(pmc + GBLRST_CAUSE1);
printk(BIOS_DEBUG, "GEN_PMCON: %08x %08x\n",
ps->gen_pmcon_a, ps->gen_pmcon_b);
printk(BIOS_DEBUG, "GBLRST_CAUSE: %08x %08x\n",
ps->gblrst_cause[0], ps->gblrst_cause[1]);
}
int acpi_get_sleep_type(void)
{
struct chipset_power_state *ps;
ps = pmc_get_power_state();
return ps->prev_sleep_state;
}