soc/intel/apollolake: Use common PMC for apollolake

With this patch apollolake uses the common PMC util
code.No regression observed on a APL platform.

Change-Id: I322a25a8b608d7fe98bec626c6696e723357a9d2
Signed-off-by: Shaunak Saha <shaunak.saha@intel.com>
Reviewed-on: https://review.coreboot.org/19375
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

1 files changed, 53 insertions, 425 deletions

diff --git a/src/soc/intel/apollolake/pmutil.c b/src/soc/intel/apollolake/pmutil.c
index bf89a09726..e007da9512 100644
--- a/src/soc/intel/apollolake/pmutil.c
+++ b/src/soc/intel/apollolake/pmutil.c
@@ -20,20 +20,18 @@
 #include <arch/acpi.h>
 #include <arch/io.h>
 #include <console/console.h>
-#include <cbmem.h>
 #include <cpu/x86/msr.h>
-#include <rules.h>
+#include <device/device.h>
+#include <device/pci.h>
 #include <device/pci_def.h>
-#include <halt.h>
 #include <intelblocks/msr.h>
+#include <intelblocks/pmclib.h>
+#include <rules.h>
 #include <soc/iomap.h>
 #include <soc/cpu.h>
 #include <soc/pci_devs.h>
 #include <soc/pm.h>
-#include <device/device.h>
-#include <device/pci.h>
 #include <timer.h>
-#include <vboot/vboot_common.h>
 #include "chip.h"
 
 static uintptr_t read_pmc_mmio_bar(void)
@@ -41,32 +39,14 @@ static uintptr_t read_pmc_mmio_bar(void)
 	return PMC_BAR0;
 }
 
-uintptr_t get_pmc_mmio_bar(void)
+uintptr_t soc_read_pmc_base(void)
 {
 	return read_pmc_mmio_bar();
 }
 
-static void print_num_status_bits(int num_bits, uint32_t status,
-				  const char * const bit_names[])
+const char *const *soc_smi_sts_array(size_t *a)
 {
-	int i;
-
-	if (!status)
-		return;
-
-	for (i = num_bits - 1; i >= 0; i--) {
-		if (status & (1 << i)) {
-			if (bit_names[i])
-				printk(BIOS_DEBUG, "%s ", bit_names[i]);
-			else
-				printk(BIOS_DEBUG, "BIT%d ", i);
-		}
-	}
-}
-
-static uint32_t print_smi_status(uint32_t smi_sts)
-{
-	static const char * const smi_sts_bits[] = {
+	static const char *const smi_sts_bits[] = {
 		[BIOS_SMI_STS] = "BIOS",
 		[LEGACY_USB_SMI_STS] = "LEGACY USB",
 		[SLP_SMI_STS] = "SLP_SMI",
@@ -90,188 +70,44 @@ static uint32_t print_smi_status(uint32_t smi_sts)
 		[PMC_OCP_SMI_STS] = "OCP_CSE",
 	};
 
-	if (!smi_sts)
-		return 0;
-
-	printk(BIOS_DEBUG, "SMI_STS: ");
-	print_num_status_bits(ARRAY_SIZE(smi_sts_bits), smi_sts, smi_sts_bits);
-	printk(BIOS_DEBUG, "\n");
-
-	return smi_sts;
-}
-
-static uint32_t reset_smi_status(void)
-{
-	uint32_t smi_sts = inl(ACPI_BASE_ADDRESS + SMI_STS);
-	outl(smi_sts, ACPI_BASE_ADDRESS + SMI_STS);
-	return smi_sts;
+	*a = ARRAY_SIZE(smi_sts_bits);
+	return smi_sts_bits;
 }
 
-uint32_t clear_smi_status(void)
+/*
+ * For APL/GLK this check for power button status if nothing else
+ * is indicating an SMI and SMIs aren't turned into SCIs.
+ * Apparently, there is no PM1 status bit in the SMI status
+ * register.  That makes things difficult for
+ * determining if the power button caused an SMI.
+ */
+uint32_t soc_get_smi_status(uint32_t generic_sts)
 {
-	uint32_t sts = reset_smi_status();
-
-	/*
-	 * Check for power button status if nothing else is indicating an SMI
-	 * and SMIs aren't turned into SCIs. Apparently, there is no PM1 status
-	 * bit in the SMI status register.  That makes things difficult for
-	 * determining if the power button caused an SMI.
-	 */
-	if (sts == 0 && !(inl(ACPI_BASE_ADDRESS + PM1_CNT) & SCI_EN)) {
+	if (generic_sts == 0 && !(inl(ACPI_BASE_ADDRESS + PM1_CNT) & SCI_EN)) {
 		uint16_t pm1_sts = inw(ACPI_BASE_ADDRESS + PM1_STS);
 
 		/* Fake PM1 status bit if power button pressed. */
 		if (pm1_sts & PWRBTN_STS)
-			sts |= (1 << FAKE_PM1_SMI_STS);
+			generic_sts |= (1 << FAKE_PM1_SMI_STS);
 	}
 
-	return print_smi_status(sts);
-}
-
-uint32_t get_smi_en(void)
-{
-	return inl(ACPI_BASE_ADDRESS + SMI_EN);
-}
-
-void enable_smi(uint32_t mask)
-{
-	uint32_t smi_en = inl(ACPI_BASE_ADDRESS + SMI_EN);
-	smi_en |= mask;
-	outl(smi_en, ACPI_BASE_ADDRESS + SMI_EN);
-}
-
-void disable_smi(uint32_t mask)
-{
-	uint32_t smi_en = inl(ACPI_BASE_ADDRESS + SMI_EN);
-	smi_en &= ~mask;
-	outl(smi_en, ACPI_BASE_ADDRESS + SMI_EN);
-}
-
-void enable_pm1_control(uint32_t mask)
-{
-	uint32_t pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT);
-	pm1_cnt |= mask;
-	outl(pm1_cnt, ACPI_BASE_ADDRESS + PM1_CNT);
-}
-
-void disable_pm1_control(uint32_t mask)
-{
-	uint32_t pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT);
-	pm1_cnt &= ~mask;
-	outl(pm1_cnt, ACPI_BASE_ADDRESS + PM1_CNT);
-}
-
-static uint16_t reset_pm1_status(void)
-{
-	uint16_t pm1_sts = inw(ACPI_BASE_ADDRESS + PM1_STS);
-	outw(pm1_sts, ACPI_BASE_ADDRESS + PM1_STS);
-	return pm1_sts;
-}
-
-static uint16_t print_pm1_status(uint16_t pm1_sts)
-{
-	static const char * const pm1_sts_bits[] = {
-		[0] = "TMROF",
-		[5] = "GBL",
-		[8] = "PWRBTN",
-		[10] = "RTC",
-		[11] = "PRBTNOR",
-		[13] = "USB",
-		[14] = "PCIEXPWAK",
-		[15] = "WAK",
-	};
-
-	if (!pm1_sts)
-		return 0;
-
-	printk(BIOS_SPEW, "PM1_STS: ");
-	print_num_status_bits(ARRAY_SIZE(pm1_sts_bits), pm1_sts, pm1_sts_bits);
-	printk(BIOS_SPEW, "\n");
-
-	return pm1_sts;
+	return generic_sts;
 }
 
-uint16_t clear_pm1_status(void)
+const char *const *soc_tco_sts_array(size_t *a)
 {
-	return print_pm1_status(reset_pm1_status());
-}
-
-void enable_pm1(uint16_t events)
-{
-	outw(events, ACPI_BASE_ADDRESS + PM1_EN);
-}
-
-static uint32_t print_tco_status(uint32_t tco_sts)
-{
-	static const char * const tco_sts_bits[] = {
+	static const char *const tco_sts_bits[] = {
 		[3] = "TIMEOUT",
 		[17] = "SECOND_TO",
 	};
 
-	if (!tco_sts)
-		return 0;
-
-	printk(BIOS_DEBUG, "TCO_STS: ");
-	print_num_status_bits(ARRAY_SIZE(tco_sts_bits), tco_sts, tco_sts_bits);
-	printk(BIOS_DEBUG, "\n");
-
-	return tco_sts;
-}
-
-static uint32_t reset_tco_status(void)
-{
-	uint32_t tco_sts = inl(ACPI_BASE_ADDRESS + TCO_STS);
-	uint32_t tco_en = inl(ACPI_BASE_ADDRESS + TCO1_CNT);
-
-	outl(tco_sts, ACPI_BASE_ADDRESS + TCO_STS);
-	return tco_sts & tco_en;
-}
-
-uint32_t clear_tco_status(void)
-{
-	return print_tco_status(reset_tco_status());
-}
-
-void enable_gpe(uint32_t mask)
-{
-	uint32_t gpe0a_en = inl(ACPI_BASE_ADDRESS + GPE0_EN(0));
-	gpe0a_en |= mask;
-	outl(gpe0a_en, ACPI_BASE_ADDRESS + GPE0_EN(0));
-}
-
-void disable_gpe(uint32_t mask)
-{
-	uint32_t gpe0a_en = inl(ACPI_BASE_ADDRESS + GPE0_EN(0));
-	gpe0a_en &= ~mask;
-	outl(gpe0a_en, ACPI_BASE_ADDRESS + GPE0_EN(0));
-}
-
-void disable_all_gpe(void)
-{
-	disable_gpe(~0);
-}
-
-/* Clear the gpio gpe0 status bits in ACPI registers */
-void clear_gpi_gpe_sts(void)
-{
-	int i;
-
-	for (i = 1; i < GPE0_REG_MAX; i++) {
-		uint32_t gpe_sts = inl(ACPI_BASE_ADDRESS + GPE0_STS(i));
-		outl(gpe_sts, ACPI_BASE_ADDRESS + GPE0_STS(i));
-	}
-}
-
-static uint32_t reset_gpe_status(void)
-{
-	uint32_t gpe_sts = inl(ACPI_BASE_ADDRESS + GPE0_STS(0));
-	outl(gpe_sts, ACPI_BASE_ADDRESS + GPE0_STS(0));
-	return gpe_sts;
+	*a = ARRAY_SIZE(tco_sts_bits);
+	return tco_sts_bits;
 }
 
-static uint32_t print_gpe_sts(uint32_t gpe_sts)
+const char *const *soc_gpe_sts_array(size_t *a)
 {
-	static const char * const gpe_sts_bits[] = {
+	static const char *const gpe_sts_bits[] = {
 		[0] = "PCIE_SCI",
 		[2] = "SWGPE",
 		[3] = "PCIE_WAKE0",
@@ -290,269 +126,61 @@ static uint32_t print_gpe_sts(uint32_t gpe_sts)
 		[17] = "SATA_PME",
 	};
 
-	if (!gpe_sts)
-		return gpe_sts;
-
-	printk(BIOS_DEBUG, "GPE0a_STS: ");
-	print_num_status_bits(ARRAY_SIZE(gpe_sts_bits), gpe_sts, gpe_sts_bits);
-	printk(BIOS_DEBUG, "\n");
-
-	return gpe_sts;
-}
-
-uint32_t clear_gpe_status(void)
-{
-	return print_gpe_sts(reset_gpe_status());
+	*a = ARRAY_SIZE(gpe_sts_bits);
+	return gpe_sts_bits;
 }
 
-/* Read and clear GPE status (defined in arch/acpi.h) */
-int acpi_get_gpe(int gpe)
+uint32_t soc_reset_tco_status(void)
 {
-	int bank;
-	uint32_t mask, sts;
-	struct stopwatch sw;
-	int rc = 0;
-
-	if (gpe < 0 || gpe > GPE0_DW3_31)
-		return -1;
-
-	bank = gpe / 32;
-	mask = 1 << (gpe % 32);
-
-	/* Wait up to 1ms for GPE status to clear */
-	stopwatch_init_msecs_expire(&sw, 1);
-	do {
-		if (stopwatch_expired(&sw))
-			return rc;
-
-		sts = inl(ACPI_BASE_ADDRESS + GPE0_STS(bank));
-		if (sts & mask) {
-			outl(mask, ACPI_BASE_ADDRESS + GPE0_STS(bank));
-			rc = 1;
-		}
-	} while (sts & mask);
+	uint32_t tco_sts = inl(ACPI_BASE_ADDRESS + TCO_STS);
+	uint32_t tco_en = inl(ACPI_BASE_ADDRESS + TCO1_CNT);
 
-	return rc;
+	outl(tco_sts, ACPI_BASE_ADDRESS + TCO_STS);
+	return tco_sts & tco_en;
 }
 
-void clear_pmc_status(void)
+void soc_clear_pm_registers(uintptr_t pmc_bar)
 {
-	uint32_t prsts;
 	uint32_t gen_pmcon1;
-	uintptr_t pmc_bar0 = read_pmc_mmio_bar();
-
-	prsts = read32((void *)(pmc_bar0 + PRSTS));
-	gen_pmcon1 = read32((void *)(pmc_bar0 + GEN_PMCON1));
 
+	gen_pmcon1 = read32((void *)(pmc_bar + GEN_PMCON1));
 	/* Clear the status bits. The RPS field is cleared on a 0 write. */
-	write32((void *)(pmc_bar0 + GEN_PMCON1), gen_pmcon1 & ~RPS);
-	write32((void *)(pmc_bar0 + PRSTS), prsts);
-}
-
-
-/* Return 0, 3, or 5 to indicate the previous sleep state. */
-int chipset_prev_sleep_state(struct chipset_power_state *ps)
-{
-	/* Default to S0. */
-	int prev_sleep_state = ACPI_S0;
-
-	if (ps->pm1_sts & WAK_STS) {
-		switch (acpi_sleep_from_pm1(ps->pm1_cnt)) {
-		case ACPI_S3:
-			if (IS_ENABLED(CONFIG_HAVE_ACPI_RESUME))
-				prev_sleep_state = ACPI_S3;
-			break;
-		case ACPI_S5:
-			prev_sleep_state = ACPI_S5;
-			break;
-		}
-
-		/* Clear SLP_TYP. */
-		outl(ps->pm1_cnt & ~(SLP_TYP), ACPI_BASE_ADDRESS + PM1_CNT);
-	}
-	return prev_sleep_state;
+	write32((void *)(pmc_bar + GEN_PMCON1), gen_pmcon1 & ~RPS);
 }
 
-/*
- * This function re-writes the gpe0 register values in power state
- * cbmem variable. After system wakes from sleep state internal PMC logic
- * writes default values in GPE_CFG register which gives a wrong offset to
- * calculate the wake reason. So we need to set it again to the routing
- * table as per the devicetree.
- */
-void fixup_power_state(void)
+void soc_get_gpe_configs(uint8_t *dw0, uint8_t *dw1, uint8_t *dw2)
 {
-	int i;
-	struct chipset_power_state *ps;
+	DEVTREE_CONST struct soc_intel_apollolake_config *config;
 
-	ps = cbmem_find(CBMEM_ID_POWER_STATE);
-	if (ps == NULL)
+	/* Look up the device in devicetree */
+	DEVTREE_CONST struct device *dev = dev_find_slot(0, SA_DEVFN_ROOT);
+	if (!dev || !dev->chip_info) {
+		printk(BIOS_ERR, "BUG! Could not find SOC devicetree config\n");
 		return;
-
-	for (i = 0; i < GPE0_REG_MAX; i++) {
-		ps->gpe0_sts[i] = inl(ACPI_BASE_ADDRESS + GPE0_STS(i));
-		ps->gpe0_en[i] = inl(ACPI_BASE_ADDRESS + GPE0_EN(i));
-		printk(BIOS_DEBUG, "gpe0_sts[%d]: %08x gpe0_en[%d]: %08x\n",
-					i, ps->gpe0_sts[i], i, ps->gpe0_en[i]);
 	}
+	config = dev->chip_info;
+
+	/* Assign to out variable */
+	*dw0 = config->gpe0_dw1;
+	*dw1 = config->gpe0_dw2;
+	*dw2 = config->gpe0_dw3;
 }
 
-/* returns prev_sleep_state */
-int fill_power_state(struct chipset_power_state *ps)
+void soc_fill_power_state(struct chipset_power_state *ps)
 {
-	int i;
 	uintptr_t pmc_bar0 = read_pmc_mmio_bar();
 
-	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->tco_sts = inl(ACPI_BASE_ADDRESS + TCO_STS);
 	ps->prsts = read32((void *)(pmc_bar0 + PRSTS));
 	ps->gen_pmcon1 = read32((void *)(pmc_bar0 + GEN_PMCON1));
 	ps->gen_pmcon2 = read32((void *)(pmc_bar0 + GEN_PMCON2));
 	ps->gen_pmcon3 = read32((void *)(pmc_bar0 + GEN_PMCON3));
 
-	ps->prev_sleep_state = chipset_prev_sleep_state(ps);
-
-	printk(BIOS_DEBUG, "pm1_sts: %04x pm1_en: %04x pm1_cnt: %08x\n",
-		ps->pm1_sts, ps->pm1_en, ps->pm1_cnt);
 	printk(BIOS_DEBUG, "prsts: %08x tco_sts: %08x\n",
-		ps->prsts, ps->tco_sts);
+	       ps->prsts, ps->tco_sts);
 	printk(BIOS_DEBUG,
-		 "gen_pmcon1: %08x gen_pmcon2: %08x gen_pmcon3: %08x\n",
-		ps->gen_pmcon1, ps->gen_pmcon2, ps->gen_pmcon3);
-	printk(BIOS_DEBUG, "smi_en: %08x smi_sts: %08x\n",
-		inl(ACPI_BASE_ADDRESS + SMI_EN), inl(ACPI_BASE_ADDRESS + SMI_STS));
-	for (i = 0; i < GPE0_REG_MAX; i++) {
-		ps->gpe0_sts[i] = inl(ACPI_BASE_ADDRESS + GPE0_STS(i));
-		ps->gpe0_en[i] = inl(ACPI_BASE_ADDRESS + GPE0_EN(i));
-		printk(BIOS_DEBUG, "gpe0_sts[%d]: %08x gpe0_en[%d]: %08x\n",
-			i, ps->gpe0_sts[i], i, ps->gpe0_en[i]);
-	}
-	printk(BIOS_DEBUG, "prev_sleep_state %d\n", ps->prev_sleep_state);
-	return ps->prev_sleep_state;
-}
-
-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;
-}
-
-/*
- * If possible, lock 0xcf9. Once the register is locked, it can't be changed.
- * This lock is reset on cold boot, hard reset, soft reset and Sx.
- */
-void global_reset_lock(void)
-{
-	uintptr_t etr = read_pmc_mmio_bar() + ETR;
-	uint32_t reg;
-
-	reg = read32((void *)etr);
-	if (reg & CF9_LOCK)
-		return;
-	reg |= CF9_LOCK;
-	write32((void *)etr, reg);
-}
-
-/*
- * Enable or disable global reset. If global reset is enabled, hard reset and
- * soft reset will trigger global reset, where both host and TXE are reset.
- * This is cleared on cold boot, hard reset, soft reset and Sx.
- */
-void global_reset_enable(bool enable)
-{
-	uintptr_t etr = read_pmc_mmio_bar() + ETR;
-	uint32_t reg;
-
-	reg = read32((void *)etr);
-	reg = enable ? reg | CF9_GLB_RST : reg & ~CF9_GLB_RST;
-	write32((void *)etr, reg);
-}
-
-/*
- * The PM1 control is set to S5 when vboot requests a reboot because the power
- * state code above may not have collected its data yet. Therefore, set it to
- * S5 when vboot requests a reboot. That's necessary if vboot fails in the
- * resume path and requests a reboot. This prevents a reboot loop where the
- * error is continually hit on the failing vboot resume path.
- */
-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);
-}
-
-void poweroff(void)
-{
-	enable_pm1_control(SLP_EN | (SLP_TYP_S5 << SLP_TYP_SHIFT));
-
-	/*
-	 * Setting SLP_TYP_S5 in PM1 triggers SLP_SMI, which is handled by SMM
-	 * to transition to S5 state. If halt is called in SMM, then it prevents
-	 * the SMI handler from being triggered and system never enters S5.
-	 */
-	if (!ENV_SMM)
-		halt();
-}
-
-void pmc_gpe_init(void)
-{
-	uint32_t gpio_cfg = 0;
-	uint32_t gpio_cfg_reg;
-	uint8_t dw1, dw2, dw3;
-	DEVTREE_CONST struct soc_intel_apollolake_config *config;
-
-	/* Look up the device in devicetree */
-	DEVTREE_CONST struct device *dev = dev_find_slot(0, SA_DEVFN_ROOT);
-	if (!dev || !dev->chip_info) {
-		printk(BIOS_ERR, "BUG! Could not find SOC devicetree config\n");
-		return;
-	}
-	config = dev->chip_info;
-
-	uintptr_t pmc_bar = get_pmc_mmio_bar();
-
-	const uint32_t gpio_cfg_mask =
-		(GPE0_DWX_MASK << GPE0_DW1_SHIFT) |
-		(GPE0_DWX_MASK << GPE0_DW2_SHIFT) |
-		(GPE0_DWX_MASK << GPE0_DW3_SHIFT);
-
-	/* Assign to local variable */
-	dw1 = config->gpe0_dw1;
-	dw2 = config->gpe0_dw2;
-	dw3 = config->gpe0_dw3;
-
-	/* Making sure that bad values don't bleed into the other fields */
-	dw1 &= GPE0_DWX_MASK;
-	dw2 &= GPE0_DWX_MASK;
-	dw3 &= GPE0_DWX_MASK;
-
-	/* Route the GPIOs to the GPE0 block. Determine that all values
-	 * are different, and if they aren't use the reset values.
-	 * DW0 is reserved/unused */
-	if (dw1 == dw2 || dw2 == dw3) {
-		printk(BIOS_INFO, "PMC: Using default GPE route.\n");
-		gpio_cfg = read32((void *)pmc_bar + GPIO_GPE_CFG);
-
-		dw1 = (gpio_cfg >> GPE0_DW1_SHIFT) & GPE0_DWX_MASK;
-		dw2 = (gpio_cfg >> GPE0_DW2_SHIFT) & GPE0_DWX_MASK;
-		dw3 = (gpio_cfg >> GPE0_DW3_SHIFT) & GPE0_DWX_MASK;
-	} else {
-		gpio_cfg |= (uint32_t)dw1 << GPE0_DW1_SHIFT;
-		gpio_cfg |= (uint32_t)dw2 << GPE0_DW2_SHIFT;
-		gpio_cfg |= (uint32_t)dw3 << GPE0_DW3_SHIFT;
-	}
-
-	gpio_cfg_reg = read32((void *)pmc_bar + GPIO_GPE_CFG) & ~gpio_cfg_mask;
-	gpio_cfg_reg |= gpio_cfg & gpio_cfg_mask;
-
-	write32((void *)pmc_bar + GPIO_GPE_CFG, gpio_cfg_reg);
-
-	/* Set the routes in the GPIO communities as well. */
-	gpio_route_gpe(dw1, dw2, dw3);
+	       "gen_pmcon1: %08x gen_pmcon2: %08x gen_pmcon3: %08x\n",
+	       ps->gen_pmcon1, ps->gen_pmcon2, ps->gen_pmcon3);
 }
 
 void enable_pm_timer_emulation(void)
@@ -566,7 +194,7 @@ void enable_pm_timer_emulation(void)
 	 * frequency is used.
 	 */
 	msr.hi = (3579545ULL << 32) / CTC_FREQ;
-	/* Set PM1 timer IO port and enable*/
+	/* Set PM1 timer IO port and enable */
 	msr.lo = EMULATE_PM_TMR_EN | (ACPI_BASE_ADDRESS + R_ACPI_PM1_TMR);
 	wrmsr(MSR_EMULATE_PM_TMR, msr);
 }