soc/intel/skylake: Drop reg-script usage

Using reg-script just to read-modify-write some registers makes no
sense. Replace reg-script usage with regular register operations.

Change-Id: Ib3c83131c30fd02c579b910cfad6843eb28ba8f1
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58005
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-by:  Felix Singer <felixsinger@posteo.net>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

2 files changed, 21 insertions, 33 deletions

diff --git a/src/soc/intel/skylake/lpc.c b/src/soc/intel/skylake/lpc.c
index 5d38bb8683..eea86fc1a9 100644
--- a/src/soc/intel/skylake/lpc.c
+++ b/src/soc/intel/skylake/lpc.c
@@ -7,7 +7,6 @@
 #include <arch/ioapic.h>
 #include <intelblocks/itss.h>
 #include <intelblocks/lpc_lib.h>
-#include <reg_script.h>
 #include <soc/iomap.h>
 #include <soc/pcr_ids.h>
 #include <soc/intel/common/block/lpc/lpc_def.h>
@@ -24,12 +23,6 @@ void soc_get_gen_io_dec_range(uint32_t gen_io_dec[LPC_NUM_GENERIC_IO_RANGES])
 	gen_io_dec[3] = config->gen4_dec;
 }
 
-static const struct reg_script pch_misc_init_script[] = {
-	/* Enable BIOS updates outside of SMM */
-	REG_PCI_RMW8(0xdc, ~(1 << 5), 0),
-	REG_SCRIPT_END
-};
-
 void lpc_soc_init(struct device *dev)
 {
 	const config_t *const config = config_of(dev);
@@ -37,7 +30,9 @@ void lpc_soc_init(struct device *dev)
 	/* Legacy initialization */
 	isa_dma_init();
 	pch_misc_init();
-	reg_script_run_on_dev(PCH_DEV_LPC, pch_misc_init_script);
+
+	/* Enable BIOS updates outside of SMM */
+	pci_and_config8(PCH_DEV_LPC, 0xdc, ~(1 << 5));
 
 	/* Enable CLKRUN_EN for power gating LPC */
 	lpc_enable_pci_clk_cntl();
diff --git a/src/soc/intel/skylake/pmc.c b/src/soc/intel/skylake/pmc.c
index e797b8f501..c2e724f353 100644
--- a/src/soc/intel/skylake/pmc.c
+++ b/src/soc/intel/skylake/pmc.c
@@ -1,5 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <arch/io.h>
 #include <bootstate.h>
 #include <console/console.h>
 #include <device/mmio.h>
@@ -8,7 +9,6 @@
 #include <intelblocks/pmc.h>
 #include <intelblocks/pmclib.h>
 #include <intelblocks/rtc.h>
-#include <reg_script.h>
 #include <soc/pci_devs.h>
 #include <soc/pm.h>
 
@@ -27,26 +27,6 @@ int pmc_soc_get_resources(struct pmc_resource_config *cfg)
 	return 0;
 }
 
-static const struct reg_script pch_pmc_misc_init_script[] = {
-	/* SLP_S4=4s, SLP_S3=50ms, disable SLP_X stretching after SUS loss. */
-	REG_PCI_RMW16(GEN_PMCON_B,
-			~(S4MAW_MASK | SLP_S3_MIN_ASST_WDTH_MASK),
-			S4MAW_4S | SLP_S3_MIN_ASST_WDTH_50MS |
-			DIS_SLP_X_STRCH_SUS_UP),
-	/* Enable SCI and clear SLP requests. */
-	REG_IO_RMW32(ACPI_BASE_ADDRESS + PM1_CNT, ~SLP_TYP, SCI_EN),
-	REG_SCRIPT_END
-};
-
-static const struct reg_script pmc_write1_to_clear_script[] = {
-	REG_PCI_OR32(GEN_PMCON_A, 0),
-	REG_PCI_OR32(GEN_PMCON_B, 0),
-	REG_PCI_OR32(GEN_PMCON_B, 0),
-	REG_RES_OR32(PWRMBASE, GBLRST_CAUSE0, 0),
-	REG_RES_OR32(PWRMBASE, GBLRST_CAUSE1, 0),
-	REG_SCRIPT_END
-};
-
 static void config_deep_sX(uint32_t offset, uint32_t mask, int sx, int enable)
 {
 	uint32_t reg;
@@ -91,15 +71,24 @@ static void config_deep_sx(uint32_t deepsx_config)
 void pmc_soc_init(struct device *dev)
 {
 	const config_t *config = config_of(dev);
+	uint8_t *const pwrmbase = pmc_mmio_regs();
+	uint32_t reg32;
 
 	rtc_init();
 
 	pmc_set_power_failure_state(true);
 	pmc_gpe_init();
 
-	/* Note that certain bits may be cleared from running script as
-	 * certain bit fields are write 1 to clear. */
-	reg_script_run_on_dev(dev, pch_pmc_misc_init_script);
+	/* SLP_S4=4s, SLP_S3=50ms, disable SLP_X stretching after SUS loss. */
+	pci_update_config32(dev, GEN_PMCON_B, ~(S4MAW_MASK | SLP_S3_MIN_ASST_WDTH_MASK),
+			    S4MAW_4S | SLP_S3_MIN_ASST_WDTH_50MS | DIS_SLP_X_STRCH_SUS_UP);
+
+	/* Enable SCI and clear SLP requests. */
+	reg32 = inl(ACPI_BASE_ADDRESS + PM1_CNT);
+	reg32 &= ~SLP_TYP;
+	reg32 |= SCI_EN;
+	outl(reg32, ACPI_BASE_ADDRESS + PM1_CNT);
+
 	pmc_set_acpi_mode();
 
 	config_deep_s3(config->deep_s3_enable_ac, config->deep_s3_enable_dc);
@@ -107,7 +96,11 @@ void pmc_soc_init(struct device *dev)
 	config_deep_sx(config->deep_sx_config);
 
 	/* Clear registers that contain write-1-to-clear bits. */
-	reg_script_run_on_dev(dev, pmc_write1_to_clear_script);
+	pci_or_config32(dev, GEN_PMCON_A, 0);
+	pci_or_config32(dev, GEN_PMCON_B, 0);
+	pci_or_config32(dev, GEN_PMCON_B, 0);
+	setbits32(pwrmbase + GBLRST_CAUSE0, 0);
+	setbits32(pwrmbase + GBLRST_CAUSE1, 0);
 }
 
 static void pm1_enable_pwrbtn_smi(void *unused)