Broadwell requires quite a bit of power-management setup. Add code to set this up correctly.
Signed-off-by: Simon Glass sjg@chromium.org ---
arch/x86/cpu/broadwell/Makefile | 1 + arch/x86/cpu/broadwell/power_state.c | 89 +++++++++++++++++++++ arch/x86/include/asm/arch-broadwell/pm.h | 129 +++++++++++++++++++++++++++++++ 3 files changed, 219 insertions(+) create mode 100644 arch/x86/cpu/broadwell/power_state.c create mode 100644 arch/x86/include/asm/arch-broadwell/pm.h
diff --git a/arch/x86/cpu/broadwell/Makefile b/arch/x86/cpu/broadwell/Makefile index a542fef..5a62afa 100644 --- a/arch/x86/cpu/broadwell/Makefile +++ b/arch/x86/cpu/broadwell/Makefile @@ -10,5 +10,6 @@ obj-y += lpc.o obj-y += northbridge.o obj-y += pch.o obj-y += pinctrl_broadwell.o +obj-y += power_state.o obj-y += refcode.o obj-y += sata.o diff --git a/arch/x86/cpu/broadwell/power_state.c b/arch/x86/cpu/broadwell/power_state.c new file mode 100644 index 0000000..3380323 --- /dev/null +++ b/arch/x86/cpu/broadwell/power_state.c @@ -0,0 +1,89 @@ +/* + * From coreboot src/soc/intel/broadwell/romstage/power_state.c + * + * Copyright (C) 2016 Google, Inc. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/intel_regs.h> +#include <asm/arch/iomap.h> +#include <asm/arch/lpc.h> +#include <asm/arch/pch.h> +#include <asm/arch/pm.h> + +/* Return 0, 3, or 5 to indicate the previous sleep state. */ +static int prev_sleep_state(struct chipset_power_state *ps) +{ + /* Default to S0. */ + int prev_sleep_state = SLEEP_STATE_S0; + + if (ps->pm1_sts & WAK_STS) { + switch ((ps->pm1_cnt & SLP_TYP) >> SLP_TYP_SHIFT) { +#if CONFIG_HAVE_ACPI_RESUME + case SLP_TYP_S3: + prev_sleep_state = SLEEP_STATE_S3; + break; +#endif + case SLP_TYP_S5: + prev_sleep_state = SLEEP_STATE_S5; + break; + } + /* Clear SLP_TYP. */ + outl(ps->pm1_cnt & ~(SLP_TYP), ACPI_BASE_ADDRESS + PM1_CNT); + } + + if (ps->gen_pmcon3 & (PWR_FLR | SUS_PWR_FLR)) + prev_sleep_state = SLEEP_STATE_S5; + + return prev_sleep_state; +} + +static void dump_power_state(struct chipset_power_state *ps) +{ + debug("PM1_STS: %04x\n", ps->pm1_sts); + debug("PM1_EN: %04x\n", ps->pm1_en); + debug("PM1_CNT: %08x\n", ps->pm1_cnt); + debug("TCO_STS: %04x %04x\n", ps->tco1_sts, ps->tco2_sts); + + debug("GPE0_STS: %08x %08x %08x %08x\n", + ps->gpe0_sts[0], ps->gpe0_sts[1], + ps->gpe0_sts[2], ps->gpe0_sts[3]); + debug("GPE0_EN: %08x %08x %08x %08x\n", + ps->gpe0_en[0], ps->gpe0_en[1], + ps->gpe0_en[2], ps->gpe0_en[3]); + + debug("GEN_PMCON: %04x %04x %04x\n", + ps->gen_pmcon1, ps->gen_pmcon2, ps->gen_pmcon3); + + debug("Previous Sleep State: S%d\n", + ps->prev_sleep_state); +} + +/* Fill power state structure from ACPI PM registers */ +void power_state_get(struct udevice *pch_dev, 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->tco1_sts = inw(ACPI_BASE_ADDRESS + TCO1_STS); + ps->tco2_sts = inw(ACPI_BASE_ADDRESS + TCO2_STS); + ps->gpe0_sts[0] = inl(ACPI_BASE_ADDRESS + GPE0_STS(0)); + ps->gpe0_sts[1] = inl(ACPI_BASE_ADDRESS + GPE0_STS(1)); + ps->gpe0_sts[2] = inl(ACPI_BASE_ADDRESS + GPE0_STS(2)); + ps->gpe0_sts[3] = inl(ACPI_BASE_ADDRESS + GPE0_STS(3)); + ps->gpe0_en[0] = inl(ACPI_BASE_ADDRESS + GPE0_EN(0)); + ps->gpe0_en[1] = inl(ACPI_BASE_ADDRESS + GPE0_EN(1)); + ps->gpe0_en[2] = inl(ACPI_BASE_ADDRESS + GPE0_EN(2)); + ps->gpe0_en[3] = inl(ACPI_BASE_ADDRESS + GPE0_EN(3)); + + dm_pci_read_config16(pch_dev, GEN_PMCON_1, &ps->gen_pmcon1); + dm_pci_read_config16(pch_dev, GEN_PMCON_2, &ps->gen_pmcon2); + dm_pci_read_config16(pch_dev, GEN_PMCON_3, &ps->gen_pmcon3); + + ps->prev_sleep_state = prev_sleep_state(ps); + + dump_power_state(ps); +} diff --git a/arch/x86/include/asm/arch-broadwell/pm.h b/arch/x86/include/asm/arch-broadwell/pm.h new file mode 100644 index 0000000..279dde9 --- /dev/null +++ b/arch/x86/include/asm/arch-broadwell/pm.h @@ -0,0 +1,129 @@ +/* + * From coreboot src/soc/intel/broadwell/include/soc/pm.h + * + * Copyright (C) 2016 Google, Inc. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#ifndef __asm_arch_pm_h +#define __asm_arch_pm_h + +#define PM1_STS 0x00 +#define WAK_STS (1 << 15) +#define PCIEXPWAK_STS (1 << 14) +#define PRBTNOR_STS (1 << 11) +#define RTC_STS (1 << 10) +#define PWRBTN_STS (1 << 8) +#define GBL_STS (1 << 5) +#define BM_STS (1 << 4) +#define TMROF_STS (1 << 0) +#define PM1_EN 0x02 +#define PCIEXPWAK_DIS (1 << 14) +#define RTC_EN (1 << 10) +#define PWRBTN_EN (1 << 8) +#define GBL_EN (1 << 5) +#define TMROF_EN (1 << 0) +#define PM1_CNT 0x04 +#define SLP_EN (1 << 13) +#define SLP_TYP (7 << 10) +#define SLP_TYP_SHIFT 10 +#define SLP_TYP_S0 0 +#define SLP_TYP_S1 1 +#define SLP_TYP_S3 5 +#define SLP_TYP_S4 6 +#define SLP_TYP_S5 7 +#define GBL_RLS (1 << 2) +#define BM_RLD (1 << 1) +#define SCI_EN (1 << 0) +#define PM1_TMR 0x08 +#define SMI_EN 0x30 +#define XHCI_SMI_EN (1 << 31) +#define ME_SMI_EN (1 << 30) +#define GPIO_UNLOCK_SMI_EN (1 << 27) +#define INTEL_USB2_EN (1 << 18) +#define LEGACY_USB2_EN (1 << 17) +#define PERIODIC_EN (1 << 14) +#define TCO_EN (1 << 13) +#define MCSMI_EN (1 << 11) +#define BIOS_RLS (1 << 7) +#define SWSMI_TMR_EN (1 << 6) +#define APMC_EN (1 << 5) +#define SLP_SMI_EN (1 << 4) +#define LEGACY_USB_EN (1 << 3) +#define BIOS_EN (1 << 2) +#define EOS (1 << 1) +#define GBL_SMI_EN (1 << 0) +#define SMI_STS 0x34 +#define UPWRC 0x3c +#define UPWRC_WS (1 << 8) +#define UPWRC_WE (1 << 1) +#define UPWRC_SMI (1 << 0) +#define GPE_CNTL 0x42 +#define SWGPE_CTRL (1 << 1) +#define DEVACT_STS 0x44 +#define PM2_CNT 0x50 +#define TCO1_CNT 0x60 +#define TCO_TMR_HLT (1 << 11) +#define TCO1_STS 0x64 +#define DMISCI_STS (1 << 9) +#define TCO2_STS 0x66 +#define TCO2_STS_SECOND_TO (1 << 1) + +#define GPE0_REG_MAX 4 +#define GPE0_REG_SIZE 32 +#define GPE0_STS(x) (0x80 + (x * 4)) +#define GPE_31_0 0 /* 0x80/0x90 = GPE[31:0] */ +#define GPE_63_32 1 /* 0x84/0x94 = GPE[63:32] */ +#define GPE_94_64 2 /* 0x88/0x98 = GPE[94:64] */ +#define GPE_STD 3 /* 0x8c/0x9c = Standard GPE */ +#define WADT_STS (1 << 18) +#define GP27_STS (1 << 16) +#define PME_B0_STS (1 << 13) +#define ME_SCI_STS (1 << 12) +#define PME_STS (1 << 11) +#define BATLOW_STS (1 << 10) +#define PCI_EXP_STS (1 << 9) +#define SMB_WAK_STS (1 << 7) +#define TCOSCI_STS (1 << 6) +#define SWGPE_STS (1 << 2) +#define HOT_PLUG_STS (1 << 1) +#define GPE0_EN(x) (0x90 + (x * 4)) +#define WADT_en (1 << 18) +#define GP27_EN (1 << 16) +#define PME_B0_EN (1 << 13) +#define ME_SCI_EN (1 << 12) +#define PME_EN (1 << 11) +#define BATLOW_EN (1 << 10) +#define PCI_EXP_EN (1 << 9) +#define TCOSCI_EN (1 << 6) +#define SWGPE_EN (1 << 2) +#define HOT_PLUG_EN (1 << 1) + +#define MAINBOARD_POWER_OFF 0 +#define MAINBOARD_POWER_ON 1 +#define MAINBOARD_POWER_KEEP 2 + +#define SLEEP_STATE_S0 0 +#define SLEEP_STATE_S3 3 +#define SLEEP_STATE_S5 5 + +struct chipset_power_state { + uint16_t pm1_sts; + uint16_t pm1_en; + uint32_t pm1_cnt; + uint16_t tco1_sts; + uint16_t tco2_sts; + uint32_t gpe0_sts[4]; + uint32_t gpe0_en[4]; + uint16_t gen_pmcon1; + uint16_t gen_pmcon2; + uint16_t gen_pmcon3; + int prev_sleep_state; + uint16_t hsio_version; + uint16_t hsio_checksum; +}; + +void power_state_get(struct udevice *pch_dev, struct chipset_power_state *ps); + +#endif