diff options
Diffstat (limited to 'src/cpu/amd/pi/romstage.c')
-rw-r--r-- | src/cpu/amd/pi/romstage.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/cpu/amd/pi/romstage.c b/src/cpu/amd/pi/romstage.c new file mode 100644 index 0000000000..393cbd4aeb --- /dev/null +++ b/src/cpu/amd/pi/romstage.c @@ -0,0 +1,48 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 Kyösti Mälkki + * + * 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 <cpu/amd/car.h> +#include <cpu/x86/mtrr.h> +#include <console/console.h> +#include <program_loading.h> +#include <northbridge/amd/agesa/agesa_helper.h> +#include <northbridge/amd/agesa/state_machine.h> + +void asmlinkage early_all_cores(void) +{ + amd_initmmio(); +} + +void * asmlinkage romstage_main(unsigned long bist) +{ + uintptr_t stack_top = CACHE_TMP_RAMTOP; + u8 initial_apic_id = cpuid_ebx(1) >> 24; + + /* Only BSP returns from here. */ + cache_as_ram_main(bist, initial_apic_id); + + printk(BIOS_DEBUG, "Move CAR stack.\n"); + return (void*)stack_top; +} + +void asmlinkage romstage_after_car(void) +{ + printk(BIOS_DEBUG, "CAR disabled.\n"); + + agesa_postcar(NULL); + + run_ramstage(); +} |