diff options
Diffstat (limited to 'src/soc/intel/skylake/romstage')
| -rw-r--r-- | src/soc/intel/skylake/romstage/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/intel/skylake/romstage/car_stage.S | 40 |
2 files changed, 41 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/romstage/Makefile.inc b/src/soc/intel/skylake/romstage/Makefile.inc index c19301f734..47c8c7e39c 100644 --- a/src/soc/intel/skylake/romstage/Makefile.inc +++ b/src/soc/intel/skylake/romstage/Makefile.inc @@ -1,5 +1,6 @@ verstage-y += power_state.c +romstage-$(CONFIG_PLATFORM_USES_FSP1_1) += car_stage.S romstage-$(CONFIG_PLATFORM_USES_FSP2_0) += car_stage_fsp20.S romstage-y += pmc.c romstage-y += power_state.c diff --git a/src/soc/intel/skylake/romstage/car_stage.S b/src/soc/intel/skylake/romstage/car_stage.S new file mode 100644 index 0000000000..9482456922 --- /dev/null +++ b/src/soc/intel/skylake/romstage/car_stage.S @@ -0,0 +1,40 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2015 Google Inc + * + * 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. + */ + +/* I/O delay between post codes on failure */ +#define LHLT_DELAY 0x50000 + +.text +.global car_stage_entry +car_stage_entry: + call romstage_c_entry + #include "src/drivers/intel/fsp1_1/after_raminit.S" + + + movb $0x69, %ah + jmp .Lhlt + +.Lhlt: + xchg %al, %ah +#if IS_ENABLED(CONFIG_POST_IO) + outb %al, $CONFIG_POST_IO_PORT +#else + post_code(POST_DEAD_CODE) +#endif + movl $LHLT_DELAY, %ecx +.Lhlt_Delay: + outb %al, $0xED + loop .Lhlt_Delay + jmp .Lhlt |