diff options
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/x86/include/arch/romstage.h | 16 | ||||
| -rw-r--r-- | src/arch/x86/postcar_loader.c | 15 |
2 files changed, 31 insertions, 0 deletions
diff --git a/src/arch/x86/include/arch/romstage.h b/src/arch/x86/include/arch/romstage.h index 42c9fbb6cd..7816a7c0bc 100644 --- a/src/arch/x86/include/arch/romstage.h +++ b/src/arch/x86/include/arch/romstage.h @@ -18,6 +18,8 @@ #include <stddef.h> #include <stdint.h> +void mainboard_romstage_entry(void); + /* * Support setting up a stack frame consisting of MTRR information * for use in bootstrapping the caching attributes after cache-as-ram @@ -62,6 +64,20 @@ void postcar_frame_common_mtrrs(struct postcar_frame *pcf); void *postcar_commit_mtrrs(struct postcar_frame *pcf); /* + * fill_postcar_frame() is called after raminit completes and right before + * calling run_postcar_phase(). Implementation should call postcar_frame_add_mtrr() + * to tag memory ranges as cacheable to speed up execution of postcar and + * early ramstage. + */ +void fill_postcar_frame(struct postcar_frame *pcf); + +/* + * prepare_and_run_postcar() determines the stack to use after + * cache-as-ram is torn down as well as the MTRR settings to use. + */ +void prepare_and_run_postcar(struct postcar_frame *pcf); + +/* * Load and run a program that takes control of execution that * tears down CAR and loads ramstage. The postcar_frame object * indicates how to set up the frame. If caching is enabled at diff --git a/src/arch/x86/postcar_loader.c b/src/arch/x86/postcar_loader.c index 816f41e412..4a7d549347 100644 --- a/src/arch/x86/postcar_loader.c +++ b/src/arch/x86/postcar_loader.c @@ -132,6 +132,21 @@ void postcar_frame_common_mtrrs(struct postcar_frame *pcf) postcar_frame_add_romcache(pcf, MTRR_TYPE_WRPROT); } +/* prepare_and_run_postcar() determines the stack to use after + * cache-as-ram is torn down as well as the MTRR settings to use. */ +void prepare_and_run_postcar(struct postcar_frame *pcf) +{ + if (postcar_frame_init(pcf, 0)) + die("Unable to initialize postcar frame.\n"); + + fill_postcar_frame(pcf); + + postcar_frame_common_mtrrs(pcf); + + run_postcar_phase(pcf); + /* We do not return here. */ +} + void *postcar_commit_mtrrs(struct postcar_frame *pcf) { /* |