blob: a079ec2561dd13d1eb18240d7a28064bc081cb31 [file] [log] [blame]
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2016 Intel Corporation..
* Copyright (C) 2017 Advanced Micro Devices
*
* 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.
*/
#include <stdint.h>
#include <assert.h>
#include <console/console.h>
#include <cpu/x86/msr.h>
#include <cpu/amd/msr.h>
#include <cpu/x86/mtrr.h>
#include <smp/node.h>
#include <bootblock_common.h>
#include <amdblocks/agesawrapper.h>
#include <amdblocks/agesawrapper_call.h>
#include <soc/pci_devs.h>
#include <soc/cpu.h>
#include <soc/northbridge.h>
#include <soc/southbridge.h>
#include <amdblocks/psp.h>
#include <timestamp.h>
#include <halt.h>
#if CONFIG_PI_AGESA_TEMP_RAM_BASE < 0x100000
#error "Error: CONFIG_PI_AGESA_TEMP_RAM_BASE must be >= 1MB"
#endif
#if CONFIG_PI_AGESA_CAR_HEAP_BASE < 0x100000
#error "Error: CONFIG_PI_AGESA_CAR_HEAP_BASE must be >= 1MB"
#endif
/* Set the MMIO Configuration Base Address, Bus Range, and misc MTRRs. */
static void amd_initmmio(void)
{
msr_t mmconf;
msr_t mtrr_cap = rdmsr(MTRR_CAP_MSR);
int mtrr;
mmconf.hi = 0;
mmconf.lo = CONFIG_MMCONF_BASE_ADDRESS | MMIO_RANGE_EN
| fms(CONFIG_MMCONF_BUS_NUMBER) << MMIO_BUS_RANGE_SHIFT;
wrmsr(MMIO_CONF_BASE, mmconf);
/*
* todo: AGESA currently writes variable MTRRs. Once that is
* corrected, un-hardcode this MTRR.
*
* Be careful not to use get_free_var_mtrr/set_var_mtrr pairs
* where all cores execute the path. Both cores within a compute
* unit share MTRRs. Programming core0 has the appearance of
* modifying core1 too. Using the pair again will create
* duplicate copies.
*/
mtrr = (mtrr_cap.lo & MTRR_CAP_VCNT) - SOC_EARLY_VMTRR_FLASH;
set_var_mtrr(mtrr, FLASH_BASE_ADDR, CONFIG_ROM_SIZE, MTRR_TYPE_WRPROT);
mtrr = (mtrr_cap.lo & MTRR_CAP_VCNT) - SOC_EARLY_VMTRR_CAR_HEAP;
set_var_mtrr(mtrr, CONFIG_PI_AGESA_CAR_HEAP_BASE,
CONFIG_PI_AGESA_HEAP_SIZE, MTRR_TYPE_WRBACK);
mtrr = (mtrr_cap.lo & MTRR_CAP_VCNT) - SOC_EARLY_VMTRR_TEMPRAM;
set_var_mtrr(mtrr, CONFIG_PI_AGESA_TEMP_RAM_BASE,
CONFIG_PI_AGESA_HEAP_SIZE, MTRR_TYPE_UNCACHEABLE);
}
asmlinkage void bootblock_c_entry(uint64_t base_timestamp)
{
amd_initmmio();
/*
* Call lib/bootblock.c main with BSP, shortcut for APs
*/
if (!boot_cpu()) {
void (*ap_romstage_entry)(void) =
(void (*)(void))get_ap_entry_ptr();
ap_romstage_entry(); /* execution does not return */
halt();
}
/* TSC cannot be relied upon. Override the TSC value passed in. */
bootblock_main_with_basetime(timestamp_get());
}
void bootblock_soc_early_init(void)
{
/*
* This call (sb_reset_i2c_slaves) was originally early at
* bootblock_c_entry, but had to be moved here. There was an
* unexplained delay in the middle of the i2c transaction when
* we had it in bootblock_c_entry. Moving it to this point
* (or adding delays) fixes the issue. It seems like the processor
* just pauses but we don't know why.
*/
sb_reset_i2c_slaves();
bootblock_fch_early_init();
post_code(0x90);
}
void bootblock_soc_init(void)
{
if (CONFIG(STONEYRIDGE_UART))
assert(CONFIG_UART_FOR_CONSOLE >= 0
&& CONFIG_UART_FOR_CONSOLE <= 1);
u32 val = cpuid_eax(1);
printk(BIOS_DEBUG, "Family_Model: %08x\n", val);
bootblock_fch_init();
/* Initialize any early i2c buses. */
i2c_soc_early_init();
}