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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <assert.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <fsp/api.h>
#include <fsp/util.h>
#include <intelblocks/lpss.h>
#include <intelblocks/xdci.h>
#include <soc/gpio_soc_defs.h>
#include <soc/intel/common/vbt.h>
#include <soc/pci_devs.h>
#include <soc/ramstage.h>
#include <soc/soc_chip.h>
#include <string.h>
/*
* Chip config parameter PcieRpL1Substates uses (UPD value + 1)
* because UPD value of 0 for PcieRpL1Substates means disabled for FSP.
* In order to ensure that mainboard setting does not disable L1 substates
* incorrectly, chip config parameter values are offset by 1 with 0 meaning
* use FSP UPD default. get_l1_substate_control() ensures that the right UPD
* value is set in fsp_params.
* 0: Use FSP UPD default
* 1: Disable L1 substates
* 2: Use L1.1
* 3: Use L1.2 (FSP UPD default)
*/
static int get_l1_substate_control(enum L1_substates_control ctl)
{
if ((ctl > L1_SS_L1_2) || (ctl == L1_SS_FSP_DEFAULT))
ctl = L1_SS_L1_2;
return ctl - 1;
}
static void parse_devicetree(FSP_S_CONFIG *params)
{
const struct soc_intel_tigerlake_config *config;
config = config_of_soc();
for (int i = 0; i < CONFIG_SOC_INTEL_I2C_DEV_MAX; i++)
params->SerialIoI2cMode[i] = config->SerialIoI2cMode[i];
for (int i = 0; i < CONFIG_SOC_INTEL_COMMON_BLOCK_GSPI_MAX; i++) {
params->SerialIoSpiMode[i] = config->SerialIoGSpiMode[i];
params->SerialIoSpiCsMode[i] = config->SerialIoGSpiCsMode[i];
params->SerialIoSpiCsState[i] = config->SerialIoGSpiCsState[i];
}
for (int i = 0; i < CONFIG_SOC_INTEL_UART_DEV_MAX; i++)
params->SerialIoUartMode[i] = config->SerialIoUartMode[i];
}
static const pci_devfn_t serial_io_dev[] = {
PCH_DEVFN_I2C0,
PCH_DEVFN_I2C1,
PCH_DEVFN_I2C2,
PCH_DEVFN_I2C3,
PCH_DEVFN_I2C4,
PCH_DEVFN_I2C5,
PCH_DEVFN_GSPI0,
PCH_DEVFN_GSPI1,
PCH_DEVFN_GSPI2,
PCH_DEVFN_GSPI3,
PCH_DEVFN_UART0,
PCH_DEVFN_UART1,
PCH_DEVFN_UART2
};
/* UPD parameters to be initialized before SiliconInit */
void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd)
{
int i;
FSP_S_CONFIG *params = &supd->FspsConfig;
struct device *dev;
struct soc_intel_tigerlake_config *config;
config = config_of_soc();
/* Parse device tree and enable/disable Serial I/O devices */
parse_devicetree(params);
/* Load VBT before devicetree-specific config. */
params->GraphicsConfigPtr = (uintptr_t)vbt_get();
params->SkipMpInit = !CONFIG_USE_INTEL_FSP_MP_INIT;
dev = pcidev_path_on_root(SA_DEVFN_IGD);
if (CONFIG(RUN_FSP_GOP) && dev && dev->enabled)
params->PeiGraphicsPeimInit = 1;
else
params->PeiGraphicsPeimInit = 0;
params->TcssAuxOri = config->TcssAuxOri;
for (i = 0; i < 8; i++)
params->IomTypeCPortPadCfg[i] = 0x09000000;
/* USB */
for (i = 0; i < ARRAY_SIZE(config->usb2_ports); i++) {
params->PortUsb20Enable[i] = config->usb2_ports[i].enable;
params->Usb2OverCurrentPin[i] = config->usb2_ports[i].ocpin;
params->Usb2PhyPetxiset[i] = config->usb2_ports[i].pre_emp_bias;
params->Usb2PhyTxiset[i] = config->usb2_ports[i].tx_bias;
params->Usb2PhyPredeemp[i] = config->usb2_ports[i].tx_emp_enable;
params->Usb2PhyPehalfbit[i] = config->usb2_ports[i].pre_emp_bit;
}
for (i = 0; i < ARRAY_SIZE(config->usb3_ports); i++) {
params->PortUsb30Enable[i] = config->usb3_ports[i].enable;
params->Usb3OverCurrentPin[i] = config->usb3_ports[i].ocpin;
if (config->usb3_ports[i].tx_de_emp) {
params->Usb3HsioTxDeEmphEnable[i] = 1;
params->Usb3HsioTxDeEmph[i] = config->usb3_ports[i].tx_de_emp;
}
if (config->usb3_ports[i].tx_downscale_amp) {
params->Usb3HsioTxDownscaleAmpEnable[i] = 1;
params->Usb3HsioTxDownscaleAmp[i] =
config->usb3_ports[i].tx_downscale_amp;
}
}
/* RP Configs */
for (i = 0; i < CONFIG_MAX_ROOT_PORTS; i++)
params->PcieRpL1Substates[i] =
get_l1_substate_control(config->PcieRpL1Substates[i]);
/* Enable xDCI controller if enabled in devicetree and allowed */
dev = pcidev_on_root(PCH_DEV_SLOT_XHCI, 1);
if (dev) {
if (!xdci_can_enable())
dev->enabled = 0;
params->XdciEnable = dev->enabled;
} else {
params->XdciEnable = 0;
}
/* PCH UART selection for FSP Debug */
params->SerialIoDebugUartNumber = CONFIG_UART_FOR_CONSOLE;
ASSERT(ARRAY_SIZE(params->SerialIoUartAutoFlow) > CONFIG_UART_FOR_CONSOLE);
params->SerialIoUartAutoFlow[CONFIG_UART_FOR_CONSOLE] = 0;
/* SATA */
dev = pcidev_on_root(PCH_DEV_SLOT_SATA, 0);
if (!dev)
params->SataEnable = 0;
else {
params->SataEnable = dev->enabled;
params->SataMode = config->SataMode;
params->SataSalpSupport = config->SataSalpSupport;
memcpy(params->SataPortsEnable, config->SataPortsEnable,
sizeof(params->SataPortsEnable));
memcpy(params->SataPortsDevSlp, config->SataPortsDevSlp,
sizeof(params->SataPortsDevSlp));
}
/* LAN */
dev = pcidev_on_root(PCH_DEV_SLOT_ESPI, 6);
if (!dev)
params->PchLanEnable = 0;
else
params->PchLanEnable = dev->enabled;
/* CNVi */
dev = pcidev_path_on_root(PCH_DEVFN_CNVI_WIFI);
if (dev)
params->CnviMode = dev->enabled;
else
params->CnviMode = 0;
/* Legacy 8254 timer support */
params->Enable8254ClockGating = !CONFIG_USE_LEGACY_8254_TIMER;
params->Enable8254ClockGatingOnS3 = !CONFIG_USE_LEGACY_8254_TIMER;
/* Enable Hybrid storage auto detection */
params->HybridStorageMode = config->HybridStorageMode;
/* USB4/TBT */
for (i = 0; i < ARRAY_SIZE(params->ITbtPcieRootPortEn); i++) {
dev = pcidev_on_root(SA_DEV_SLOT_TBT, i);
if (dev)
params->ITbtPcieRootPortEn[i] = dev->enabled;
else
params->ITbtPcieRootPortEn[i] = 0;
}
mainboard_silicon_init_params(params);
}
/* Mainboard GPIO Configuration */
__weak void mainboard_silicon_init_params(FSP_S_CONFIG *params)
{
printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__);
}
/* Return list of SOC LPSS controllers */
const pci_devfn_t *soc_lpss_controllers_list(size_t *size)
{
*size = ARRAY_SIZE(serial_io_dev);
return serial_io_dev;
}
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