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Diffstat (limited to 'arch/x86/cpu/apollolake/fsp_s.c')
-rw-r--r--arch/x86/cpu/apollolake/fsp_s.c661
1 files changed, 661 insertions, 0 deletions
diff --git a/arch/x86/cpu/apollolake/fsp_s.c b/arch/x86/cpu/apollolake/fsp_s.c
new file mode 100644
index 0000000000..9804227f80
--- /dev/null
+++ b/arch/x86/cpu/apollolake/fsp_s.c
@@ -0,0 +1,661 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <acpi_s3.h>
+#include <binman.h>
+#include <dm.h>
+#include <irq.h>
+#include <asm/intel_pinctrl.h>
+#include <asm/io.h>
+#include <asm/intel_regs.h>
+#include <asm/msr.h>
+#include <asm/msr-index.h>
+#include <asm/pci.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/systemagent.h>
+#include <asm/arch/fsp/fsp_configs.h>
+#include <asm/arch/fsp/fsp_s_upd.h>
+
+#define PCH_P2SB_E0 0xe0
+#define HIDE_BIT BIT(0)
+
+#define INTEL_GSPI_MAX 3
+#define INTEL_I2C_DEV_MAX 8
+#define MAX_USB2_PORTS 8
+
+enum {
+ CHIPSET_LOCKDOWN_FSP = 0, /* FSP handles locking per UPDs */
+ CHIPSET_LOCKDOWN_COREBOOT, /* coreboot handles locking */
+};
+
+enum i2c_speed {
+ I2C_SPEED_STANDARD = 100000,
+ I2C_SPEED_FAST = 400000,
+ I2C_SPEED_FAST_PLUS = 1000000,
+ I2C_SPEED_HIGH = 3400000,
+ I2C_SPEED_FAST_ULTRA = 5000000,
+};
+
+/*
+ * Timing values are in units of clock period, with the clock speed
+ * provided by the SOC
+ *
+ * TODO(sjg@chromium.org): Connect this up to the I2C driver
+ */
+struct dw_i2c_speed_config {
+ enum i2c_speed speed;
+ /* SCL high and low period count */
+ u16 scl_lcnt;
+ u16 scl_hcnt;
+ /*
+ * SDA hold time should be 300ns in standard and fast modes
+ * and long enough for deterministic logic level change in
+ * fast-plus and high speed modes.
+ *
+ * [15:0] SDA TX Hold Time
+ * [23:16] SDA RX Hold Time
+ */
+ u32 sda_hold;
+};
+
+/* Serial IRQ control. SERIRQ_QUIET is the default (0) */
+enum serirq_mode {
+ SERIRQ_QUIET,
+ SERIRQ_CONTINUOUS,
+ SERIRQ_OFF,
+};
+
+/*
+ * This I2C controller has support for 3 independent speed configs but can
+ * support both FAST_PLUS and HIGH speeds through the same set of speed
+ * config registers. These are treated separately so the speed config values
+ * can be provided via ACPI to the OS.
+ */
+#define DW_I2C_SPEED_CONFIG_COUNT 4
+
+struct dw_i2c_bus_config {
+ /* Bus should be enabled in TPL with temporary base */
+ int early_init;
+ /* Bus speed in Hz, default is I2C_SPEED_FAST (400 KHz) */
+ enum i2c_speed speed;
+ /*
+ * If rise_time_ns is non-zero the calculations for lcnt and hcnt
+ * registers take into account the times of the bus. However, if
+ * there is a match in speed_config those register values take
+ * precedence
+ */
+ int rise_time_ns;
+ int fall_time_ns;
+ int data_hold_time_ns;
+ /* Specific bus speed configuration */
+ struct dw_i2c_speed_config speed_config[DW_I2C_SPEED_CONFIG_COUNT];
+};
+
+struct gspi_cfg {
+ /* Bus speed in MHz */
+ u32 speed_mhz;
+ /* Bus should be enabled prior to ramstage with temporary base */
+ u8 early_init;
+};
+
+/*
+ * This structure will hold data required by common blocks.
+ * These are soc specific configurations which will be filled by soc.
+ * We'll fill this structure once during init and use the data in common block.
+ */
+struct soc_intel_common_config {
+ int chipset_lockdown;
+ struct gspi_cfg gspi[INTEL_GSPI_MAX];
+ struct dw_i2c_bus_config i2c[INTEL_I2C_DEV_MAX];
+};
+
+enum pnp_settings {
+ PNP_PERF,
+ PNP_POWER,
+ PNP_PERF_POWER,
+};
+
+struct usb2_eye_per_port {
+ u8 per_port_tx_pe_half;
+ u8 per_port_pe_txi_set;
+ u8 per_port_txi_set;
+ u8 hs_skew_sel;
+ u8 usb_tx_emphasis_en;
+ u8 per_port_rxi_set;
+ u8 hs_npre_drv_sel;
+ u8 override_en;
+};
+
+struct apl_config {
+ /* Common structure containing soc config data required by common code*/
+ struct soc_intel_common_config common_soc_config;
+
+ /*
+ * Mapping from PCIe root port to CLKREQ input on the SOC. The SOC has
+ * four CLKREQ inputs, but six root ports. Root ports without an
+ * associated CLKREQ signal must be marked with "CLKREQ_DISABLED"
+ */
+ u8 pcie_rp_clkreq_pin[MAX_PCIE_PORTS];
+
+ /* Enable/disable hot-plug for root ports (0 = disable, 1 = enable) */
+ u8 pcie_rp_hotplug_enable[MAX_PCIE_PORTS];
+
+ /* De-emphasis enable configuration for each PCIe root port */
+ u8 pcie_rp_deemphasis_enable[MAX_PCIE_PORTS];
+
+ /*
+ * [14:8] DDR mode Number of dealy elements.Each = 125pSec.
+ * [6:0] SDR mode Number of dealy elements.Each = 125pSec.
+ */
+ u32 emmc_tx_cmd_cntl;
+
+ /*
+ * [14:8] HS400 mode Number of dealy elements.Each = 125pSec.
+ * [6:0] SDR104/HS200 mode Number of dealy elements.Each = 125pSec.
+ */
+ u32 emmc_tx_data_cntl1;
+
+ /*
+ * [30:24] SDR50 mode Number of dealy elements.Each = 125pSec.
+ * [22:16] DDR50 mode Number of dealy elements.Each = 125pSec.
+ * [14:8] SDR25/HS50 mode Number of dealy elements.Each = 125pSec.
+ * [6:0] SDR12/Compatibility mode Number of dealy elements.
+ * Each = 125pSec.
+ */
+ u32 emmc_tx_data_cntl2;
+
+ /*
+ * [30:24] SDR50 mode Number of dealy elements.Each = 125pSec.
+ * [22:16] DDR50 mode Number of dealy elements.Each = 125pSec.
+ * [14:8] SDR25/HS50 mode Number of dealy elements.Each = 125pSec.
+ * [6:0] SDR12/Compatibility mode Number of dealy elements.
+ * Each = 125pSec.
+ */
+ u32 emmc_rx_cmd_data_cntl1;
+
+ /*
+ * [14:8] HS400 mode 1 Number of dealy elements.Each = 125pSec.
+ * [6:0] HS400 mode 2 Number of dealy elements.Each = 125pSec.
+ */
+ u32 emmc_rx_strobe_cntl;
+
+ /*
+ * [13:8] Auto Tuning mode Number of dealy elements.Each = 125pSec.
+ * [6:0] SDR104/HS200 Number of dealy elements.Each = 125pSec.
+ */
+ u32 emmc_rx_cmd_data_cntl2;
+
+ /* Select the eMMC max speed allowed */
+ u32 emmc_host_max_speed;
+
+ /* Specifies on which IRQ the SCI will internally appear */
+ u32 sci_irq;
+
+ /* Configure serial IRQ (SERIRQ) line */
+ enum serirq_mode serirq_mode;
+
+ /* Configure LPSS S0ix Enable */
+ bool lpss_s0ix_enable;
+
+ /* Enable DPTF support */
+ bool dptf_enable;
+
+ /* TCC activation offset value in degrees Celsius */
+ int tcc_offset;
+
+ /*
+ * Configure Audio clk gate and power gate
+ * IOSF-SB port ID 92 offset 0x530 [5] and [3]
+ */
+ bool hdaudio_clk_gate_enable;
+ bool hdaudio_pwr_gate_enable;
+ bool hdaudio_bios_config_lockdown;
+
+ /* SLP S3 minimum assertion width */
+ int slp_s3_assertion_width_usecs;
+
+ /* GPIO pin for PERST_0 */
+ u32 prt0_gpio;
+
+ /* USB2 eye diagram settings per port */
+ struct usb2_eye_per_port usb2eye[MAX_USB2_PORTS];
+
+ /* GPIO SD card detect pin */
+ unsigned int sdcard_cd_gpio;
+
+ /*
+ * PRMRR size setting with three options
+ * 0x02000000 - 32MiB
+ * 0x04000000 - 64MiB
+ * 0x08000000 - 128MiB
+ */
+ u32 PrmrrSize;
+
+ /*
+ * Enable SGX feature.
+ * Enabling SGX feature is 2 step process,
+ * (1) set sgx_enable = 1
+ * (2) set PrmrrSize to supported size
+ */
+ bool sgx_enable;
+
+ /*
+ * Select PNP Settings.
+ * (0) Performance,
+ * (1) Power
+ * (2) Power & Performance
+ */
+ enum pnp_settings pnp_settings;
+
+ /*
+ * PMIC PCH_PWROK delay configuration - IPC Configuration
+ * Upd for changing PCH_PWROK delay configuration : I2C_Slave_Address
+ * (31:24) + Register_Offset (23:16) + OR Value (15:8) + AND Value (7:0)
+ */
+ u32 pmic_pmc_ipc_ctrl;
+
+ /*
+ * Options to disable XHCI Link Compliance Mode. Default is FALSE to not
+ * disable Compliance Mode. Set TRUE to disable Compliance Mode.
+ * 0:FALSE(Default), 1:True.
+ */
+ bool disable_compliance_mode;
+
+ /*
+ * Options to change USB3 ModPhy setting for the Integrated Filter (IF)
+ * value. Default is 0 to not changing default IF value (0x12). Set
+ * value with the range from 0x01 to 0xff to change IF value.
+ */
+ u32 mod_phy_if_value;
+
+ /*
+ * Options to bump USB3 LDO voltage. Default is FALSE to not increasing
+ * LDO voltage. Set TRUE to increase LDO voltage with 40mV.
+ * 0:FALSE (default), 1:True.
+ */
+ bool mod_phy_voltage_bump;
+
+ /*
+ * Options to adjust PMIC Vdd2 voltage. Default is 0 to not adjusting
+ * the PMIC Vdd2 default voltage 1.20v. Upd for changing Vdd2 Voltage
+ * configuration: I2C_Slave_Address (31:23) + Register_Offset (23:16)
+ * + OR Value (15:8) + AND Value (7:0) through BUCK5_VID[3:2]:
+ * 00=1.10v, 01=1.15v, 10=1.24v, 11=1.20v (default).
+ */
+ u32 pmic_vdd2_voltage;
+
+ /* Option to enable VTD feature */
+ bool enable_vtd;
+};
+
+static int get_config(struct udevice *dev, struct apl_config *apl)
+{
+ const u8 *ptr;
+ ofnode node;
+ u32 emmc[4];
+ int ret;
+
+ memset(apl, '\0', sizeof(*apl));
+
+ node = dev_read_subnode(dev, "fsp-s");
+ if (!ofnode_valid(node))
+ return log_msg_ret("fsp-s settings", -ENOENT);
+
+ ptr = ofnode_read_u8_array_ptr(node, "pcie-rp-clkreq-pin",
+ MAX_PCIE_PORTS);
+ if (!ptr)
+ return log_msg_ret("pcie-rp-clkreq-pin", -EINVAL);
+ memcpy(apl->pcie_rp_clkreq_pin, ptr, MAX_PCIE_PORTS);
+
+ ret = ofnode_read_u32(node, "prt0-gpio", &apl->prt0_gpio);
+ if (ret)
+ return log_msg_ret("prt0-gpio", ret);
+ ret = ofnode_read_u32(node, "sdcard-cd-gpio", &apl->sdcard_cd_gpio);
+ if (ret)
+ return log_msg_ret("sdcard-cd-gpio", ret);
+
+ ret = ofnode_read_u32_array(node, "emmc", emmc, ARRAY_SIZE(emmc));
+ if (ret)
+ return log_msg_ret("emmc", ret);
+ apl->emmc_tx_data_cntl1 = emmc[0];
+ apl->emmc_tx_data_cntl2 = emmc[1];
+ apl->emmc_rx_cmd_data_cntl1 = emmc[2];
+ apl->emmc_rx_cmd_data_cntl2 = emmc[3];
+
+ apl->dptf_enable = ofnode_read_bool(node, "dptf-enable");
+
+ apl->hdaudio_clk_gate_enable = ofnode_read_bool(node,
+ "hdaudio-clk-gate-enable");
+ apl->hdaudio_pwr_gate_enable = ofnode_read_bool(node,
+ "hdaudio-pwr-gate-enable");
+ apl->hdaudio_bios_config_lockdown = ofnode_read_bool(node,
+ "hdaudio-bios-config-lockdown");
+ apl->lpss_s0ix_enable = ofnode_read_bool(node, "lpss-s0ix-enable");
+
+ /* Santa */
+ apl->usb2eye[1].per_port_pe_txi_set = 7;
+ apl->usb2eye[1].per_port_txi_set = 2;
+
+ return 0;
+}
+
+static void apl_fsp_silicon_init_params_cb(struct apl_config *apl,
+ struct fsp_s_config *cfg)
+{
+ u8 port;
+
+ for (port = 0; port < MAX_USB2_PORTS; port++) {
+ if (apl->usb2eye[port].per_port_tx_pe_half)
+ cfg->port_usb20_per_port_tx_pe_half[port] =
+ apl->usb2eye[port].per_port_tx_pe_half;
+
+ if (apl->usb2eye[port].per_port_pe_txi_set)
+ cfg->port_usb20_per_port_pe_txi_set[port] =
+ apl->usb2eye[port].per_port_pe_txi_set;
+
+ if (apl->usb2eye[port].per_port_txi_set)
+ cfg->port_usb20_per_port_txi_set[port] =
+ apl->usb2eye[port].per_port_txi_set;
+
+ if (apl->usb2eye[port].hs_skew_sel)
+ cfg->port_usb20_hs_skew_sel[port] =
+ apl->usb2eye[port].hs_skew_sel;
+
+ if (apl->usb2eye[port].usb_tx_emphasis_en)
+ cfg->port_usb20_i_usb_tx_emphasis_en[port] =
+ apl->usb2eye[port].usb_tx_emphasis_en;
+
+ if (apl->usb2eye[port].per_port_rxi_set)
+ cfg->port_usb20_per_port_rxi_set[port] =
+ apl->usb2eye[port].per_port_rxi_set;
+
+ if (apl->usb2eye[port].hs_npre_drv_sel)
+ cfg->port_usb20_hs_npre_drv_sel[port] =
+ apl->usb2eye[port].hs_npre_drv_sel;
+ }
+}
+
+int fsps_update_config(struct udevice *dev, ulong rom_offset,
+ struct fsps_upd *upd)
+{
+ struct fsp_s_config *cfg = &upd->config;
+ struct apl_config *apl;
+ struct binman_entry vbt;
+ void *buf;
+ int ret;
+
+ ret = binman_entry_find("intel-vbt", &vbt);
+ if (ret)
+ return log_msg_ret("Cannot find VBT", ret);
+ vbt.image_pos += rom_offset;
+ buf = malloc(vbt.size);
+ if (!buf)
+ return log_msg_ret("Alloc VBT", -ENOMEM);
+
+ /*
+ * Load VBT before devicetree-specific config. This only supports
+ * memory-mapped SPI at present.
+ */
+ bootstage_start(BOOTSTAGE_ID_ACCUM_MMAP_SPI, "mmap_spi");
+ memcpy(buf, (void *)vbt.image_pos, vbt.size);
+ bootstage_accum(BOOTSTAGE_ID_ACCUM_MMAP_SPI);
+ if (*(u32 *)buf != VBT_SIGNATURE)
+ return log_msg_ret("VBT signature", -EINVAL);
+ cfg->graphics_config_ptr = (ulong)buf;
+
+ apl = malloc(sizeof(*apl));
+ if (!apl)
+ return log_msg_ret("config", -ENOMEM);
+ get_config(dev, apl);
+
+ cfg->ish_enable = 0;
+ cfg->enable_sata = 0;
+ cfg->pcie_root_port_en[2] = 0;
+ cfg->pcie_rp_hot_plug[2] = 0;
+ cfg->pcie_root_port_en[3] = 0;
+ cfg->pcie_rp_hot_plug[3] = 0;
+ cfg->pcie_root_port_en[4] = 0;
+ cfg->pcie_rp_hot_plug[4] = 0;
+ cfg->pcie_root_port_en[5] = 0;
+ cfg->pcie_rp_hot_plug[5] = 0;
+ cfg->pcie_root_port_en[1] = 0;
+ cfg->pcie_rp_hot_plug[1] = 0;
+ cfg->usb_otg = 0;
+ cfg->i2c6_enable = 0;
+ cfg->i2c7_enable = 0;
+ cfg->hsuart3_enable = 0;
+ cfg->spi1_enable = 0;
+ cfg->spi2_enable = 0;
+ cfg->sdio_enabled = 0;
+
+ memcpy(cfg->pcie_rp_clk_req_number, apl->pcie_rp_clkreq_pin,
+ sizeof(cfg->pcie_rp_clk_req_number));
+
+ memcpy(cfg->pcie_rp_hot_plug, apl->pcie_rp_hotplug_enable,
+ sizeof(cfg->pcie_rp_hot_plug));
+
+ switch (apl->serirq_mode) {
+ case SERIRQ_QUIET:
+ cfg->sirq_enable = 1;
+ cfg->sirq_mode = 0;
+ break;
+ case SERIRQ_CONTINUOUS:
+ cfg->sirq_enable = 1;
+ cfg->sirq_mode = 1;
+ break;
+ case SERIRQ_OFF:
+ default:
+ cfg->sirq_enable = 0;
+ break;
+ }
+
+ if (apl->emmc_tx_cmd_cntl)
+ cfg->emmc_tx_cmd_cntl = apl->emmc_tx_cmd_cntl;
+ if (apl->emmc_tx_data_cntl1)
+ cfg->emmc_tx_data_cntl1 = apl->emmc_tx_data_cntl1;
+ if (apl->emmc_tx_data_cntl2)
+ cfg->emmc_tx_data_cntl2 = apl->emmc_tx_data_cntl2;
+ if (apl->emmc_rx_cmd_data_cntl1)
+ cfg->emmc_rx_cmd_data_cntl1 = apl->emmc_rx_cmd_data_cntl1;
+ if (apl->emmc_rx_strobe_cntl)
+ cfg->emmc_rx_strobe_cntl = apl->emmc_rx_strobe_cntl;
+ if (apl->emmc_rx_cmd_data_cntl2)
+ cfg->emmc_rx_cmd_data_cntl2 = apl->emmc_rx_cmd_data_cntl2;
+ if (apl->emmc_host_max_speed)
+ cfg->e_mmc_host_max_speed = apl->emmc_host_max_speed;
+
+ cfg->lpss_s0ix_enable = apl->lpss_s0ix_enable;
+
+ cfg->skip_mp_init = true;
+
+ /* Disable setting of EISS bit in FSP */
+ cfg->spi_eiss = 0;
+
+ /* Disable FSP from locking access to the RTC NVRAM */
+ cfg->rtc_lock = 0;
+
+ /* Enable Audio clk gate and power gate */
+ cfg->hd_audio_clk_gate = apl->hdaudio_clk_gate_enable;
+ cfg->hd_audio_pwr_gate = apl->hdaudio_pwr_gate_enable;
+ /* Bios config lockdown Audio clk and power gate */
+ cfg->bios_cfg_lock_down = apl->hdaudio_bios_config_lockdown;
+ apl_fsp_silicon_init_params_cb(apl, cfg);
+
+ cfg->usb_otg = true;
+ cfg->vtd_enable = apl->enable_vtd;
+
+ return 0;
+}
+
+static void p2sb_set_hide_bit(pci_dev_t dev, int hide)
+{
+ pci_x86_clrset_config(dev, PCH_P2SB_E0 + 1, HIDE_BIT,
+ hide ? HIDE_BIT : 0, PCI_SIZE_8);
+}
+
+/* Configure package power limits */
+static int set_power_limits(struct udevice *dev)
+{
+ msr_t rapl_msr_reg, limit;
+ u32 power_unit;
+ u32 tdp, min_power, max_power;
+ u32 pl2_val;
+ u32 override_tdp[2];
+ int ret;
+
+ /* Get units */
+ rapl_msr_reg = msr_read(MSR_PKG_POWER_SKU_UNIT);
+ power_unit = 1 << (rapl_msr_reg.lo & 0xf);
+
+ /* Get power defaults for this SKU */
+ rapl_msr_reg = msr_read(MSR_PKG_POWER_SKU);
+ tdp = rapl_msr_reg.lo & PKG_POWER_LIMIT_MASK;
+ pl2_val = rapl_msr_reg.hi & PKG_POWER_LIMIT_MASK;
+ min_power = (rapl_msr_reg.lo >> 16) & PKG_POWER_LIMIT_MASK;
+ max_power = rapl_msr_reg.hi & PKG_POWER_LIMIT_MASK;
+
+ if (min_power > 0 && tdp < min_power)
+ tdp = min_power;
+
+ if (max_power > 0 && tdp > max_power)
+ tdp = max_power;
+
+ ret = dev_read_u32_array(dev, "tdp-pl-override-mw", override_tdp,
+ ARRAY_SIZE(override_tdp));
+ if (ret)
+ return log_msg_ret("tdp-pl-override-mw", ret);
+
+ /* Set PL1 override value */
+ if (override_tdp[0])
+ tdp = override_tdp[0] * power_unit / 1000;
+
+ /* Set PL2 override value */
+ if (override_tdp[1])
+ pl2_val = override_tdp[1] * power_unit / 1000;
+
+ /* Set long term power limit to TDP */
+ limit.lo = tdp & PKG_POWER_LIMIT_MASK;
+ /* Set PL1 Pkg Power clamp bit */
+ limit.lo |= PKG_POWER_LIMIT_CLAMP;
+
+ limit.lo |= PKG_POWER_LIMIT_EN;
+ limit.lo |= (MB_POWER_LIMIT1_TIME_DEFAULT &
+ PKG_POWER_LIMIT_TIME_MASK) << PKG_POWER_LIMIT_TIME_SHIFT;
+
+ /* Set short term power limit PL2 */
+ limit.hi = pl2_val & PKG_POWER_LIMIT_MASK;
+ limit.hi |= PKG_POWER_LIMIT_EN;
+
+ /* Program package power limits in RAPL MSR */
+ msr_write(MSR_PKG_POWER_LIMIT, limit);
+ log_info("RAPL PL1 %d.%dW\n", tdp / power_unit,
+ 100 * (tdp % power_unit) / power_unit);
+ log_info("RAPL PL2 %d.%dW\n", pl2_val / power_unit,
+ 100 * (pl2_val % power_unit) / power_unit);
+
+ /*
+ * Sett RAPL MMIO register for Power limits. RAPL driver is using MSR
+ * instead of MMIO, so disable LIMIT_EN bit for MMIO
+ */
+ writel(limit.lo & ~PKG_POWER_LIMIT_EN, MCHBAR_REG(MCHBAR_RAPL_PPL));
+ writel(limit.hi & ~PKG_POWER_LIMIT_EN, MCHBAR_REG(MCHBAR_RAPL_PPL + 4));
+
+ return 0;
+}
+
+int p2sb_unhide(void)
+{
+ pci_dev_t dev = PCI_BDF(0, 0xd, 0);
+ ulong val;
+
+ p2sb_set_hide_bit(dev, 0);
+
+ pci_x86_read_config(dev, PCI_VENDOR_ID, &val, PCI_SIZE_16);
+
+ if (val != PCI_VENDOR_ID_INTEL)
+ return log_msg_ret("p2sb unhide", -EIO);
+
+ return 0;
+}
+
+/* Overwrites the SCI IRQ if another IRQ number is given by device tree */
+static void set_sci_irq(void)
+{
+ /* Skip this for now */
+}
+
+int arch_fsps_preinit(void)
+{
+ struct udevice *itss;
+ int ret;
+
+ ret = uclass_first_device_err(UCLASS_IRQ, &itss);
+ if (ret)
+ return log_msg_ret("no itss", ret);
+ /*
+ * Snapshot the current GPIO IRQ polarities. FSP is setting a default
+ * policy that doesn't honour boards' requirements
+ */
+ irq_snapshot_polarities(itss);
+
+ /*
+ * Clear the GPI interrupt status and enable registers. These
+ * registers do not get reset to default state when booting from S5.
+ */
+ ret = pinctrl_gpi_clear_int_cfg();
+ if (ret)
+ return log_msg_ret("gpi_clear", ret);
+
+ return 0;
+}
+
+int arch_fsp_init_r(void)
+{
+#ifdef CONFIG_HAVE_ACPI_RESUME
+ bool s3wake = gd->arch.prev_sleep_state == ACPI_S3;
+#else
+ bool s3wake = false;
+#endif
+ struct udevice *dev, *itss;
+ int ret;
+
+ /*
+ * This must be called before any devices are probed. Put any probing
+ * into arch_fsps_preinit() above.
+ *
+ * We don't use CONFIG_APL_BOOT_FROM_FAST_SPI_FLASH here since it will
+ * force PCI to be probed.
+ */
+ ret = fsp_silicon_init(s3wake, false);
+ if (ret)
+ return ret;
+
+ ret = uclass_first_device_err(UCLASS_IRQ, &itss);
+ if (ret)
+ return log_msg_ret("no itss", ret);
+ /* Restore GPIO IRQ polarities back to previous settings */
+ irq_restore_polarities(itss);
+
+ /* soc_init() */
+ ret = p2sb_unhide();
+ if (ret)
+ return log_msg_ret("unhide p2sb", ret);
+
+ /* Set RAPL MSR for Package power limits*/
+ ret = uclass_first_device_err(UCLASS_NORTHBRIDGE, &dev);
+ if (ret)
+ return log_msg_ret("Cannot get northbridge", ret);
+ set_power_limits(dev);
+
+ /*
+ * FSP-S routes SCI to IRQ 9. With the help of this function you can
+ * select another IRQ for SCI.
+ */
+ set_sci_irq();
+
+ return 0;
+}
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