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/*
* This file is part of the coreboot project.
*
* 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 <arch/cpu.h>
#include <console/console.h>
#include <cpu/intel/romstage.h>
#include <program_loading.h>
#define DCACHE_RAM_ROMSTAGE_STACK_SIZE 0x2000
void * asmlinkage romstage_main(unsigned long bist)
{
int i;
void *romstage_stack_after_car;
const int num_guards = 4;
const u32 stack_guard = 0xdeadbeef;
u32 *stack_base = (void *)(CONFIG_DCACHE_RAM_BASE +
CONFIG_DCACHE_RAM_SIZE -
DCACHE_RAM_ROMSTAGE_STACK_SIZE);
for (i = 0; i < num_guards; i++)
stack_base[i] = stack_guard;
mainboard_romstage_entry(bist);
/* Check the stack. */
for (i = 0; i < num_guards; i++) {
if (stack_base[i] == stack_guard)
continue;
printk(BIOS_DEBUG, "Smashed stack detected in romstage!\n");
}
/* Get the stack to use after cache-as-ram is torn down. */
if (IS_ENABLED(CONFIG_LATE_CBMEM_INIT))
romstage_stack_after_car = (void*)CONFIG_RAMTOP;
else
romstage_stack_after_car = setup_stack_and_mtrrs();
return romstage_stack_after_car;
}
void asmlinkage romstage_after_car(void)
{
/* Load the ramstage. */
run_ramstage();
}
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