arch/x86/cpu/baytrail/acpi.c - u-boot - Git at Google

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
  */

 #include <common.h>
 #include <cpu.h>
 #include <dm.h>
 #include <dm/uclass-internal.h>
 #include <asm/acpi_s3.h>
 #include <asm/acpi_table.h>
 #include <asm/io.h>
 #include <asm/tables.h>
 #include <asm/arch/global_nvs.h>
 #include <asm/arch/iomap.h>

 void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs,
 		      void *dsdt)
 {
 	struct acpi_table_header *header = &(fadt->header);
 	u16 pmbase = ACPI_BASE_ADDRESS;

 	memset((void *)fadt, 0, sizeof(struct acpi_fadt));

 	acpi_fill_header(header, "FACP");
 	header->length = sizeof(struct acpi_fadt);
 	header->revision = 4;

 	fadt->firmware_ctrl = (u32)facs;
 	fadt->dsdt = (u32)dsdt;
 	fadt->preferred_pm_profile = ACPI_PM_MOBILE;
 	fadt->sci_int = 9;
 	fadt->smi_cmd = 0;
 	fadt->acpi_enable = 0;
 	fadt->acpi_disable = 0;
 	fadt->s4bios_req = 0;
 	fadt->pstate_cnt = 0;
 	fadt->pm1a_evt_blk = pmbase;
 	fadt->pm1b_evt_blk = 0x0;
 	fadt->pm1a_cnt_blk = pmbase + 0x4;
 	fadt->pm1b_cnt_blk = 0x0;
 	fadt->pm2_cnt_blk = pmbase + 0x50;
 	fadt->pm_tmr_blk = pmbase + 0x8;
 	fadt->gpe0_blk = pmbase + 0x20;
 	fadt->gpe1_blk = 0;
 	fadt->pm1_evt_len = 4;
 	fadt->pm1_cnt_len = 2;
 	fadt->pm2_cnt_len = 1;
 	fadt->pm_tmr_len = 4;
 	fadt->gpe0_blk_len = 8;
 	fadt->gpe1_blk_len = 0;
 	fadt->gpe1_base = 0;
 	fadt->cst_cnt = 0;
 	fadt->p_lvl2_lat = ACPI_FADT_C2_NOT_SUPPORTED;
 	fadt->p_lvl3_lat = ACPI_FADT_C3_NOT_SUPPORTED;
 	fadt->flush_size = 0;
 	fadt->flush_stride = 0;
 	fadt->duty_offset = 1;
 	fadt->duty_width = 0;
 	fadt->day_alrm = 0x0d;
 	fadt->mon_alrm = 0x00;
 	fadt->century = 0x00;
 	fadt->iapc_boot_arch = ACPI_FADT_LEGACY_DEVICES | ACPI_FADT_8042;
 	fadt->flags = ACPI_FADT_WBINVD | ACPI_FADT_C1_SUPPORTED |
 		ACPI_FADT_C2_MP_SUPPORTED | ACPI_FADT_SLEEP_BUTTON |
 		ACPI_FADT_S4_RTC_WAKE | ACPI_FADT_RESET_REGISTER |
 		ACPI_FADT_PLATFORM_CLOCK;

 	fadt->reset_reg.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->reset_reg.bit_width = 8;
 	fadt->reset_reg.bit_offset = 0;
 	fadt->reset_reg.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
 	fadt->reset_reg.addrl = IO_PORT_RESET;
 	fadt->reset_reg.addrh = 0;
 	fadt->reset_value = SYS_RST | RST_CPU | FULL_RST;

 	fadt->x_firmware_ctl_l = (u32)facs;
 	fadt->x_firmware_ctl_h = 0;
 	fadt->x_dsdt_l = (u32)dsdt;
 	fadt->x_dsdt_h = 0;

 	fadt->x_pm1a_evt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm1a_evt_blk.bit_width = fadt->pm1_evt_len * 8;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
 	fadt->x_pm1a_evt_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
 	fadt->x_pm1a_evt_blk.addrl = fadt->pm1a_evt_blk;
 	fadt->x_pm1a_evt_blk.addrh = 0x0;

 	fadt->x_pm1b_evt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm1b_evt_blk.bit_width = 0;
 	fadt->x_pm1b_evt_blk.bit_offset = 0;
 	fadt->x_pm1b_evt_blk.access_size = 0;
 	fadt->x_pm1b_evt_blk.addrl = 0x0;
 	fadt->x_pm1b_evt_blk.addrh = 0x0;

 	fadt->x_pm1a_cnt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm1a_cnt_blk.bit_width = fadt->pm1_cnt_len * 8;
 	fadt->x_pm1a_cnt_blk.bit_offset = 0;
 	fadt->x_pm1a_cnt_blk.access_size = ACPI_ACCESS_SIZE_WORD_ACCESS;
 	fadt->x_pm1a_cnt_blk.addrl = fadt->pm1a_cnt_blk;
 	fadt->x_pm1a_cnt_blk.addrh = 0x0;

 	fadt->x_pm1b_cnt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm1b_cnt_blk.bit_width = 0;
 	fadt->x_pm1b_cnt_blk.bit_offset = 0;
 	fadt->x_pm1b_cnt_blk.access_size = 0;
 	fadt->x_pm1b_cnt_blk.addrl = 0x0;
 	fadt->x_pm1b_cnt_blk.addrh = 0x0;

 	fadt->x_pm2_cnt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm2_cnt_blk.bit_width = fadt->pm2_cnt_len * 8;
 	fadt->x_pm2_cnt_blk.bit_offset = 0;
 	fadt->x_pm2_cnt_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
 	fadt->x_pm2_cnt_blk.addrl = fadt->pm2_cnt_blk;
 	fadt->x_pm2_cnt_blk.addrh = 0x0;

 	fadt->x_pm_tmr_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
 	fadt->x_pm_tmr_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
 	fadt->x_pm_tmr_blk.addrl = fadt->pm_tmr_blk;
 	fadt->x_pm_tmr_blk.addrh = 0x0;

 	fadt->x_gpe0_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_gpe0_blk.bit_width = fadt->gpe0_blk_len * 8;
 	fadt->x_gpe0_blk.bit_offset = 0;
 	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
 	fadt->x_gpe0_blk.addrl = fadt->gpe0_blk;
 	fadt->x_gpe0_blk.addrh = 0x0;

 	fadt->x_gpe1_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_gpe1_blk.bit_width = 0;
 	fadt->x_gpe1_blk.bit_offset = 0;
 	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = 0x0;
 	fadt->x_gpe1_blk.addrh = 0x0;

 	header->checksum = table_compute_checksum(fadt, header->length);
 }

 void acpi_create_gnvs(struct acpi_global_nvs *gnvs)
 {
 	struct udevice *dev;
 	int ret;

 	/* at least we have one processor */
 	gnvs->pcnt = 1;
 	/* override the processor count with actual number */
 	ret = uclass_find_first_device(UCLASS_CPU, &dev);
 	if (ret == 0 && dev != NULL) {
 		ret = cpu_get_count(dev);
 		if (ret > 0)
 			gnvs->pcnt = ret;
 	}

 	/* determine whether internal uart is on */
 	if (IS_ENABLED(CONFIG_INTERNAL_UART))
 		gnvs->iuart_en = 1;
 	else
 		gnvs->iuart_en = 0;
 }

 #ifdef CONFIG_HAVE_ACPI_RESUME
 /*
  * The following two routines are called at a very early stage, even before
  * FSP 2nd phase API fsp_init() is called. Registers off ACPI_BASE_ADDRESS
  * and PMC_BASE_ADDRESS are accessed, so we need make sure the base addresses
  * of these two blocks are programmed by either U-Boot or FSP.
  *
  * It has been verified that 1st phase API (see arch/x86/lib/fsp/fsp_car.S)
  * on Intel BayTrail SoC already initializes these two base addresses so
  * we are safe to access these registers here.
  */

 enum acpi_sleep_state chipset_prev_sleep_state(void)
 {
 	u32 pm1_sts;
 	u32 pm1_cnt;
 	u32 gen_pmcon1;
 	enum acpi_sleep_state prev_sleep_state = ACPI_S0;

 	/* Read Power State */
 	pm1_sts = inw(ACPI_BASE_ADDRESS + PM1_STS);
 	pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT);
 	gen_pmcon1 = readl(PMC_BASE_ADDRESS + GEN_PMCON1);

 	debug("PM1_STS = 0x%x PM1_CNT = 0x%x GEN_PMCON1 = 0x%x\n",
 	      pm1_sts, pm1_cnt, gen_pmcon1);

 	if (pm1_sts & WAK_STS)
 		prev_sleep_state = acpi_sleep_from_pm1(pm1_cnt);

 	if (gen_pmcon1 & (PWR_FLR | SUS_PWR_FLR))
 		prev_sleep_state = ACPI_S5;

 	return prev_sleep_state;
 }

 void chipset_clear_sleep_state(void)
 {
 	u32 pm1_cnt;

 	pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT);
 	outl(pm1_cnt & ~(SLP_TYP), ACPI_BASE_ADDRESS + PM1_CNT);
 }
 #endif
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
	*/

	#include <common.h>
	#include <cpu.h>
	#include <dm.h>
	#include <dm/uclass-internal.h>
	#include <asm/acpi_s3.h>
	#include <asm/acpi_table.h>
	#include <asm/io.h>
	#include <asm/tables.h>
	#include <asm/arch/global_nvs.h>
	#include <asm/arch/iomap.h>

	void acpi_create_fadt(struct acpi_fadt fadt, struct acpi_facs facs,
	void *dsdt)
	{
	struct acpi_table_header *header = &(fadt->header);
	u16 pmbase = ACPI_BASE_ADDRESS;

	memset((void *)fadt, 0, sizeof(struct acpi_fadt));

	acpi_fill_header(header, "FACP");
	header->length = sizeof(struct acpi_fadt);
	header->revision = 4;

	fadt->firmware_ctrl = (u32)facs;
	fadt->dsdt = (u32)dsdt;
	fadt->preferred_pm_profile = ACPI_PM_MOBILE;
	fadt->sci_int = 9;
	fadt->smi_cmd = 0;
	fadt->acpi_enable = 0;
	fadt->acpi_disable = 0;
	fadt->s4bios_req = 0;
	fadt->pstate_cnt = 0;
	fadt->pm1a_evt_blk = pmbase;
	fadt->pm1b_evt_blk = 0x0;
	fadt->pm1a_cnt_blk = pmbase + 0x4;
	fadt->pm1b_cnt_blk = 0x0;
	fadt->pm2_cnt_blk = pmbase + 0x50;
	fadt->pm_tmr_blk = pmbase + 0x8;
	fadt->gpe0_blk = pmbase + 0x20;
	fadt->gpe1_blk = 0;
	fadt->pm1_evt_len = 4;
	fadt->pm1_cnt_len = 2;
	fadt->pm2_cnt_len = 1;
	fadt->pm_tmr_len = 4;
	fadt->gpe0_blk_len = 8;
	fadt->gpe1_blk_len = 0;
	fadt->gpe1_base = 0;
	fadt->cst_cnt = 0;
	fadt->p_lvl2_lat = ACPI_FADT_C2_NOT_SUPPORTED;
	fadt->p_lvl3_lat = ACPI_FADT_C3_NOT_SUPPORTED;
	fadt->flush_size = 0;
	fadt->flush_stride = 0;
	fadt->duty_offset = 1;
	fadt->duty_width = 0;
	fadt->day_alrm = 0x0d;
	fadt->mon_alrm = 0x00;
	fadt->century = 0x00;
	fadt->iapc_boot_arch = ACPI_FADT_LEGACY_DEVICES \| ACPI_FADT_8042;
	fadt->flags = ACPI_FADT_WBINVD \| ACPI_FADT_C1_SUPPORTED \|
	ACPI_FADT_C2_MP_SUPPORTED \| ACPI_FADT_SLEEP_BUTTON \|
	ACPI_FADT_S4_RTC_WAKE \| ACPI_FADT_RESET_REGISTER \|
	ACPI_FADT_PLATFORM_CLOCK;

	fadt->reset_reg.space_id = ACPI_ADDRESS_SPACE_IO;
	fadt->reset_reg.bit_width = 8;
	fadt->reset_reg.bit_offset = 0;
	fadt->reset_reg.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
	fadt->reset_reg.addrl = IO_PORT_RESET;
	fadt->reset_reg.addrh = 0;
	fadt->reset_value = SYS_RST \| RST_CPU \| FULL_RST;

	fadt->x_firmware_ctl_l = (u32)facs;
	fadt->x_firmware_ctl_h = 0;
	fadt->x_dsdt_l = (u32)dsdt;
	fadt->x_dsdt_h = 0;

	fadt->x_pm1a_evt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
	fadt->x_pm1a_evt_blk.bit_width = fadt->pm1_evt_len * 8;
	fadt->x_pm1a_evt_blk.bit_offset = 0;
	fadt->x_pm1a_evt_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
	fadt->x_pm1a_evt_blk.addrl = fadt->pm1a_evt_blk;
	fadt->x_pm1a_evt_blk.addrh = 0x0;

	fadt->x_pm1b_evt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
	fadt->x_pm1b_evt_blk.bit_width = 0;
	fadt->x_pm1b_evt_blk.bit_offset = 0;
	fadt->x_pm1b_evt_blk.access_size = 0;
	fadt->x_pm1b_evt_blk.addrl = 0x0;
	fadt->x_pm1b_evt_blk.addrh = 0x0;

	fadt->x_pm1a_cnt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
	fadt->x_pm1a_cnt_blk.bit_width = fadt->pm1_cnt_len * 8;
	fadt->x_pm1a_cnt_blk.bit_offset = 0;
	fadt->x_pm1a_cnt_blk.access_size = ACPI_ACCESS_SIZE_WORD_ACCESS;
	fadt->x_pm1a_cnt_blk.addrl = fadt->pm1a_cnt_blk;
	fadt->x_pm1a_cnt_blk.addrh = 0x0;

	fadt->x_pm1b_cnt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
	fadt->x_pm1b_cnt_blk.bit_width = 0;
	fadt->x_pm1b_cnt_blk.bit_offset = 0;
	fadt->x_pm1b_cnt_blk.access_size = 0;
	fadt->x_pm1b_cnt_blk.addrl = 0x0;
	fadt->x_pm1b_cnt_blk.addrh = 0x0;

	fadt->x_pm2_cnt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
	fadt->x_pm2_cnt_blk.bit_width = fadt->pm2_cnt_len * 8;
	fadt->x_pm2_cnt_blk.bit_offset = 0;
	fadt->x_pm2_cnt_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS;
	fadt->x_pm2_cnt_blk.addrl = fadt->pm2_cnt_blk;
	fadt->x_pm2_cnt_blk.addrh = 0x0;

	fadt->x_pm_tmr_blk.space_id = ACPI_ADDRESS_SPACE_IO;
	fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8;
	fadt->x_pm_tmr_blk.bit_offset = 0;
	fadt->x_pm_tmr_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
	fadt->x_pm_tmr_blk.addrl = fadt->pm_tmr_blk;
	fadt->x_pm_tmr_blk.addrh = 0x0;

	fadt->x_gpe0_blk.space_id = ACPI_ADDRESS_SPACE_IO;
	fadt->x_gpe0_blk.bit_width = fadt->gpe0_blk_len * 8;
	fadt->x_gpe0_blk.bit_offset = 0;
	fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
	fadt->x_gpe0_blk.addrl = fadt->gpe0_blk;
	fadt->x_gpe0_blk.addrh = 0x0;

	fadt->x_gpe1_blk.space_id = ACPI_ADDRESS_SPACE_IO;
	fadt->x_gpe1_blk.bit_width = 0;
	fadt->x_gpe1_blk.bit_offset = 0;
	fadt->x_gpe1_blk.access_size = 0;
	fadt->x_gpe1_blk.addrl = 0x0;
	fadt->x_gpe1_blk.addrh = 0x0;

	header->checksum = table_compute_checksum(fadt, header->length);
	}

	void acpi_create_gnvs(struct acpi_global_nvs *gnvs)
	{
	struct udevice *dev;
	int ret;

	/* at least we have one processor */
	gnvs->pcnt = 1;
	/* override the processor count with actual number */
	ret = uclass_find_first_device(UCLASS_CPU, &dev);
	if (ret == 0 && dev != NULL) {
	ret = cpu_get_count(dev);
	if (ret > 0)
	gnvs->pcnt = ret;
	}

	/* determine whether internal uart is on */
	if (IS_ENABLED(CONFIG_INTERNAL_UART))
	gnvs->iuart_en = 1;
	else
	gnvs->iuart_en = 0;
	}

	#ifdef CONFIG_HAVE_ACPI_RESUME
	/*
	* The following two routines are called at a very early stage, even before
	* FSP 2nd phase API fsp_init() is called. Registers off ACPI_BASE_ADDRESS
	* and PMC_BASE_ADDRESS are accessed, so we need make sure the base addresses
	* of these two blocks are programmed by either U-Boot or FSP.
	*
	* It has been verified that 1st phase API (see arch/x86/lib/fsp/fsp_car.S)
	* on Intel BayTrail SoC already initializes these two base addresses so
	* we are safe to access these registers here.
	*/

	enum acpi_sleep_state chipset_prev_sleep_state(void)
	{
	u32 pm1_sts;
	u32 pm1_cnt;
	u32 gen_pmcon1;
	enum acpi_sleep_state prev_sleep_state = ACPI_S0;

	/* Read Power State */
	pm1_sts = inw(ACPI_BASE_ADDRESS + PM1_STS);
	pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT);
	gen_pmcon1 = readl(PMC_BASE_ADDRESS + GEN_PMCON1);

	debug("PM1_STS = 0x%x PM1_CNT = 0x%x GEN_PMCON1 = 0x%x\n",
	pm1_sts, pm1_cnt, gen_pmcon1);

	if (pm1_sts & WAK_STS)
	prev_sleep_state = acpi_sleep_from_pm1(pm1_cnt);

	if (gen_pmcon1 & (PWR_FLR \| SUS_PWR_FLR))
	prev_sleep_state = ACPI_S5;

	return prev_sleep_state;
	}

	void chipset_clear_sleep_state(void)
	{
	u32 pm1_cnt;

	pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT);
	outl(pm1_cnt & ~(SLP_TYP), ACPI_BASE_ADDRESS + PM1_CNT);
	}
	#endif