diff options
Diffstat (limited to 'src/cpu/intel/haswell/romstage.c')
-rw-r--r-- | src/cpu/intel/haswell/romstage.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/cpu/intel/haswell/romstage.c b/src/cpu/intel/haswell/romstage.c new file mode 100644 index 0000000000..f954b91dca --- /dev/null +++ b/src/cpu/intel/haswell/romstage.c @@ -0,0 +1,53 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2012 ChromeOS Authors + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdint.h> +#include <cbmem.h> +#include <console/console.h> + +/* Mainboard needs to supply this symbol. */ +extern void romstage_main(unsigned long bist); + +void main(unsigned long bist) +{ + int i; + const int num_guards = 4; + const u32 stack_guard = 0xdeadbeef; + u32 *stack_base = (void *)(CONFIG_DCACHE_RAM_BASE + + CONFIG_DCACHE_RAM_SIZE - + CONFIG_DCACHE_RAM_ROMSTAGE_STACK_SIZE); + + printk(BIOS_DEBUG, "Setting up stack guards.\n"); + for (i = 0; i < num_guards; i++) + stack_base[i] = stack_guard; + + romstage_main(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"); + } + +#if CONFIG_CONSOLE_CBMEM + /* Keep this the last thing this function does. */ + cbmemc_reinit(); +#endif +} |