| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2013 Google Inc. |
| * Copyright (C) 2015 Intel Corp. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc. |
| */ |
| |
| #include <cbmem.h> |
| #include <stddef.h> |
| #include <arch/early_variables.h> |
| #include <arch/cpu.h> |
| #include <arch/io.h> |
| #include <arch/cbfs.h> |
| #include <arch/stages.h> |
| #include <cbmem.h> |
| #include <chip.h> |
| #include <cpu/x86/mtrr.h> |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <device/pci_def.h> |
| #include <elog.h> |
| #include <romstage_handoff.h> |
| #include <timestamp.h> |
| #include <reset.h> |
| #include <vendorcode/google/chromeos/chromeos.h> |
| #include <fsp/util.h> |
| #include <soc/intel/common/mrc_cache.h> |
| #include <soc/gpio.h> |
| #include <soc/iomap.h> |
| #include <soc/iosf.h> |
| #include <soc/lpc.h> |
| #include <soc/pci_devs.h> |
| #include <soc/romstage.h> |
| #include <soc/smm.h> |
| #include <soc/spi.h> |
| #include <tpm.h> |
| |
| void program_base_addresses(void) |
| { |
| uint32_t reg; |
| const uint32_t lpc_dev = PCI_DEV(0, LPC_DEV, LPC_FUNC); |
| |
| /* Memory Mapped IO registers. */ |
| reg = PMC_BASE_ADDRESS | 2; |
| pci_write_config32(lpc_dev, PBASE, reg); |
| reg = IO_BASE_ADDRESS | 2; |
| pci_write_config32(lpc_dev, IOBASE, reg); |
| reg = ILB_BASE_ADDRESS | 2; |
| pci_write_config32(lpc_dev, IBASE, reg); |
| reg = SPI_BASE_ADDRESS | 2; |
| pci_write_config32(lpc_dev, SBASE, reg); |
| reg = MPHY_BASE_ADDRESS | 2; |
| pci_write_config32(lpc_dev, MPBASE, reg); |
| reg = PUNIT_BASE_ADDRESS | 2; |
| pci_write_config32(lpc_dev, PUBASE, reg); |
| reg = RCBA_BASE_ADDRESS | 1; |
| pci_write_config32(lpc_dev, RCBA, reg); |
| |
| /* IO Port Registers. */ |
| reg = ACPI_BASE_ADDRESS | 2; |
| pci_write_config32(lpc_dev, ABASE, reg); |
| reg = GPIO_BASE_ADDRESS | 2; |
| pci_write_config32(lpc_dev, GBASE, reg); |
| } |
| |
| static void spi_init(void) |
| { |
| void *scs = (void *)(SPI_BASE_ADDRESS + SCS); |
| void *bcr = (void *)(SPI_BASE_ADDRESS + BCR); |
| uint32_t reg; |
| |
| /* Disable generating SMI when setting WPD bit. */ |
| write32(scs, read32(scs) & ~SMIWPEN); |
| /* |
| * Enable caching and prefetching in the SPI controller. Disable |
| * the SMM-only BIOS write and set WPD bit. |
| */ |
| reg = (read32(bcr) & ~SRC_MASK) | SRC_CACHE_PREFETCH | BCR_WPD; |
| reg &= ~EISS; |
| write32(bcr, reg); |
| } |
| |
| static struct chipset_power_state power_state CAR_GLOBAL; |
| |
| static void migrate_power_state(int is_recovery) |
| { |
| struct chipset_power_state *ps_cbmem; |
| struct chipset_power_state *ps_car; |
| |
| ps_car = car_get_var_ptr(&power_state); |
| ps_cbmem = cbmem_add(CBMEM_ID_POWER_STATE, sizeof(*ps_cbmem)); |
| |
| if (ps_cbmem == NULL) { |
| printk(BIOS_DEBUG, "Not adding power state to cbmem!\n"); |
| return; |
| } |
| memcpy(ps_cbmem, ps_car, sizeof(*ps_cbmem)); |
| } |
| ROMSTAGE_CBMEM_INIT_HOOK(migrate_power_state); |
| |
| struct chipset_power_state *fill_power_state(void) |
| { |
| struct chipset_power_state *ps = car_get_var_ptr(&power_state); |
| |
| 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->gpe0_sts = inl(ACPI_BASE_ADDRESS + GPE0_STS); |
| ps->gpe0_en = inl(ACPI_BASE_ADDRESS + GPE0_EN); |
| ps->tco_sts = inl(ACPI_BASE_ADDRESS + TCO_STS); |
| ps->prsts = read32((void *)(PMC_BASE_ADDRESS + PRSTS)); |
| ps->gen_pmcon1 = read32((void *)(PMC_BASE_ADDRESS + GEN_PMCON1)); |
| ps->gen_pmcon2 = read32((void *)(PMC_BASE_ADDRESS + GEN_PMCON2)); |
| |
| 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, "gpe0_sts: %08x gpe0_en: %08x tco_sts: %08x\n", |
| ps->gpe0_sts, ps->gpe0_en, ps->tco_sts); |
| printk(BIOS_DEBUG, "prsts: %08x gen_pmcon1: %08x gen_pmcon2: %08x\n", |
| ps->prsts, ps->gen_pmcon1, ps->gen_pmcon2); |
| printk(BIOS_DEBUG, "prev_sleep_state %d\n", ps->prev_sleep_state); |
| return ps; |
| } |
| |
| /* 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 = SLEEP_STATE_S0; |
| |
| if (ps->pm1_sts & WAK_STS) { |
| switch ((ps->pm1_cnt & SLP_TYP) >> SLP_TYP_SHIFT) { |
| #if IS_ENABLED(CONFIG_HAVE_ACPI_RESUME) |
| case SLP_TYP_S3: |
| prev_sleep_state = SLEEP_STATE_S3; |
| break; |
| #endif |
| case SLP_TYP_S5: |
| prev_sleep_state = SLEEP_STATE_S5; |
| break; |
| } |
| |
| /* Clear SLP_TYP. */ |
| outl(ps->pm1_cnt & ~(SLP_TYP), ACPI_BASE_ADDRESS + PM1_CNT); |
| } |
| |
| if (ps->gen_pmcon1 & (PWR_FLR | SUS_PWR_FLR)) |
| prev_sleep_state = SLEEP_STATE_S5; |
| |
| return prev_sleep_state; |
| } |
| |
| /* SOC initialization before the console is enabled */ |
| void car_soc_pre_console_init(void) |
| { |
| /* Early chipset initialization */ |
| program_base_addresses(); |
| tco_disable(); |
| } |
| |
| /* SOC initialization after console is enabled */ |
| void car_soc_post_console_init(void) |
| { |
| /* Continue chipset initialization */ |
| set_max_freq(); |
| spi_init(); |
| |
| lpc_init(); |
| } |
| |
| /* SOC initialization after RAM is enabled */ |
| void soc_after_ram_init(struct romstage_params *params) |
| { |
| u32 value; |
| |
| /* Make sure that E0000 and F0000 are RAM */ |
| printk(BIOS_DEBUG, "Disable ROM shadow below 1MB.\n"); |
| value = iosf_bunit_read(BUNIT_BMISC); |
| value |= 3; |
| iosf_bunit_write(BUNIT_BMISC, value); |
| } |
| |
| /* Initialize the UPD parameters for MemoryInit */ |
| void soc_memory_init_params(struct romstage_params *params, |
| MEMORY_INIT_UPD *upd) |
| { |
| const struct device *dev; |
| const struct soc_intel_braswell_config *config; |
| |
| /* Set the parameters for MemoryInit */ |
| dev = dev_find_slot(0, PCI_DEVFN(LPC_DEV, LPC_FUNC)); |
| config = dev->chip_info; |
| printk(BIOS_DEBUG, "Updating UPD values for MemoryInit\n"); |
| upd->PcdMrcInitTsegSize = IS_ENABLED(CONFIG_HAVE_SMI_HANDLER) ? |
| config->PcdMrcInitTsegSize : 0; |
| upd->PcdMrcInitMmioSize = config->PcdMrcInitMmioSize; |
| upd->PcdMrcInitSpdAddr1 = config->PcdMrcInitSpdAddr1; |
| upd->PcdMrcInitSpdAddr2 = config->PcdMrcInitSpdAddr2; |
| upd->PcdIgdDvmt50PreAlloc = config->PcdIgdDvmt50PreAlloc; |
| upd->PcdApertureSize = config->PcdApertureSize; |
| upd->PcdGttSize = config->PcdGttSize; |
| upd->PcdLegacySegDecode = config->PcdLegacySegDecode; |
| upd->PcdDvfsEnable = config->PcdDvfsEnable; |
| } |
| |
| void soc_display_memory_init_params(const MEMORY_INIT_UPD *old, |
| MEMORY_INIT_UPD *new) |
| { |
| /* Display the parameters for MemoryInit */ |
| printk(BIOS_SPEW, "UPD values for MemoryInit:\n"); |
| soc_display_upd_value("PcdMrcInitTsegSize", 2, |
| old->PcdMrcInitTsegSize, new->PcdMrcInitTsegSize); |
| soc_display_upd_value("PcdMrcInitMmioSize", 2, |
| old->PcdMrcInitMmioSize, new->PcdMrcInitMmioSize); |
| soc_display_upd_value("PcdMrcInitSpdAddr1", 1, |
| old->PcdMrcInitSpdAddr1, new->PcdMrcInitSpdAddr1); |
| soc_display_upd_value("PcdMrcInitSpdAddr2", 1, |
| old->PcdMrcInitSpdAddr2, new->PcdMrcInitSpdAddr2); |
| soc_display_upd_value("PcdMemChannel0Config", 1, |
| old->PcdMemChannel0Config, new->PcdMemChannel0Config); |
| soc_display_upd_value("PcdMemChannel1Config", 1, |
| old->PcdMemChannel1Config, new->PcdMemChannel1Config); |
| soc_display_upd_value("PcdMemorySpdPtr", 4, |
| old->PcdMemorySpdPtr, new->PcdMemorySpdPtr); |
| soc_display_upd_value("PcdIgdDvmt50PreAlloc", 1, |
| old->PcdIgdDvmt50PreAlloc, new->PcdIgdDvmt50PreAlloc); |
| soc_display_upd_value("PcdApertureSize", 1, |
| old->PcdApertureSize, new->PcdApertureSize); |
| soc_display_upd_value("PcdGttSize", 1, |
| old->PcdGttSize, new->PcdGttSize); |
| soc_display_upd_value("PcdLegacySegDecode", 1, |
| old->PcdLegacySegDecode, new->PcdLegacySegDecode); |
| soc_display_upd_value("PcdDvfsEnable", 1, |
| old->PcdDvfsEnable, new->PcdDvfsEnable); |
| } |