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u-boot-brain/arch/x86/cpu/apollolake/fsp_s.c

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// 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 <malloc.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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