| /* |
| * 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 0x800 |
| |
| 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(); |
| } |