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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 Intel Corp.
* (Written by Alexandru Gagniuc <alexandrux.gagniuc@intel.com> for Intel Corp.)
* (Written by Andrey Petrov <andrey.petrov@intel.com> for 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; either version 2 of the License, or
* (at your option) any later version.
*/
#include <arch/io.h>
#include <arch/symbols.h>
#include <cbfs.h>
#include <cbmem.h>
#include <console/console.h>
#include <device/pci_def.h>
#include <fsp/api.h>
#include <fsp/util.h>
#include <device/resource.h>
#include <string.h>
#include <soc/iomap.h>
#include <soc/pci_devs.h>
#include <soc/northbridge.h>
#include <soc/romstage.h>
#include <soc/uart.h>
#define FIT_POINTER (0x100000000ULL - 0x40)
/*
* Enables several BARs and devices which are needed for memory init
* - MCH_BASE_ADDR is needed in order to talk to the memory controller
* - PMC_BAR0 and PMC_BAR1 are used by FSP (with the base address hardcoded)
* Once raminit is done, we can safely let the allocator re-assign them
* - HPET is enabled because FSP wants to store a pointer to global data in the
* HPET comparator register
*/
static void soc_early_romstage_init(void)
{
device_t pmc = PMC_DEV;
/* Set MCH base address and enable bit */
pci_write_config32(NB_DEV_ROOT, MCHBAR, MCH_BASE_ADDR | 1);
/* Set PMC base address */
pci_write_config32(pmc, PCI_BASE_ADDRESS_0, PMC_BAR0);
pci_write_config32(pmc, PCI_BASE_ADDRESS_1, 0); /* 64-bit BAR */
pci_write_config32(pmc, PCI_BASE_ADDRESS_2, PMC_BAR1);
pci_write_config32(pmc, PCI_BASE_ADDRESS_3, 0); /* 64-bit BAR */
/* PMIO BAR4 was already set earlier, hence the COMMAND_IO below */
pci_write_config32(pmc, PCI_COMMAND,
PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
PCI_COMMAND_MASTER);
/* Enable decoding for HPET. Needed for FSP global pointer storage */
pci_write_config32(P2SB_DEV, 0x60, 1<<7);
}
static void disable_watchdog(void)
{
uint32_t reg;
device_t dev = PMC_DEV;
/* Open up an IO window */
pci_write_config16(dev, PCI_BASE_ADDRESS_4, ACPI_PMIO_BASE);
pci_write_config32(dev, PCI_COMMAND,
PCI_COMMAND_MASTER | PCI_COMMAND_IO);
/* Stop TCO timer */
reg = inl(ACPI_PMIO_BASE + 0x68);
reg |= 1 << 11;
outl(reg, ACPI_PMIO_BASE + 0x68);
}
asmlinkage void car_stage_entry(void)
{
void *hob_list_ptr;
struct resource fsp_mem;
struct range_entry reg_car;
printk(BIOS_DEBUG, "Starting romstage...\n");
disable_watchdog();
soc_early_romstage_init();
/* Make sure the blob does not override our data in CAR */
memset(®_car, 0, sizeof(reg_car));
reg_car.begin = (uintptr_t) _car_relocatable_data_end;
reg_car.end = (uintptr_t) _car_region_end;
if (fsp_memory_init(&hob_list_ptr, ®_car) != FSP_SUCCESS) {
die("FSP memory init failed. Giving up.");
}
fsp_find_reserved_memory(&fsp_mem, hob_list_ptr);
/* initialize cbmem by adding FSP reserved memory first thing */
cbmem_initialize_empty_id_size(CBMEM_ID_FSP_RESERVED_MEMORY,
fsp_mem.size);
/* make sure FSP memory is reserved in cbmem */
if (fsp_mem.base != (uintptr_t)cbmem_find(CBMEM_ID_FSP_RESERVED_MEMORY))
die("Failed to accommodate FSP reserved memory request");
/* Now that CBMEM is up, save the list so ramstage can use it */
fsp_save_hob_list(hob_list_ptr);
run_ramstage();
}
static void fill_console_params(struct FSPM_UPD *mupd)
{
if (IS_ENABLED(CONFIG_CONSOLE_SERIAL)) {
mupd->FspmConfig.SerialDebugPortDevice = CONFIG_UART_FOR_CONSOLE;
/* use MMIO port type */
mupd->FspmConfig.SerialDebugPortType = 2;
/* use 4 byte register stride */
mupd->FspmConfig.SerialDebugPortStrideSize = 2;
/* used only for port type set to external */
mupd->FspmConfig.SerialDebugPortAddress = 0;
} else {
mupd->FspmConfig.SerialDebugPortType = 0;
}
}
void platform_fsp_memory_init_params_cb(struct FSPM_UPD *mupd)
{
fill_console_params(mupd);
mainboard_memory_init_params(mupd);
/* Do NOT let FSP do any GPIO pad configuration */
mupd->FspmConfig.GpioPadInitTablePtr = NULL;
/*
* At FIT_POINTER there is an address that points to FIT. Even though it
* is technically 64bit value we know only 32bit address is used.
*/
mupd->FspmConfig.FitTablePtr = read32((void*) FIT_POINTER);
/* Reserve enough memory under TOLUD to save CBMEM header */
mupd->FspmArchUpd.BootLoaderTolumSize = cbmem_overhead_size();
/* Let FSPM use memory right at the top of CAR */
/* TODO: Add checks to see if we collide with other areas */
mupd->FspmArchUpd.StackBase = _car_region_end - CONFIG_FSPM_STACK_SIZE;
mupd->FspmArchUpd.StackSize = CONFIG_FSPM_STACK_SIZE;
}
__attribute__ ((weak))
void mainboard_memory_init_params(struct FSPM_UPD *mupd)
{
printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__);
}
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