From 5bc641afebda5fd274ba713add4145651d9bc71d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ky=C3=B6sti=20M=C3=A4lkki?= Date: Fri, 9 Aug 2019 09:37:49 +0300 Subject: cpu/intel: Refactor platform_enter_postcar() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There are benefits in placing the postcar_frame structure in .bss and returning control to romstage_main(). Change-Id: I0418a2abc74f749203c587b2763c5f8a5960e4f9 Signed-off-by: Kyösti Mälkki Reviewed-on: https://review.coreboot.org/c/coreboot/+/34808 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/northbridge/intel/haswell/memmap.c | 16 ++++------------ 1 file changed, 4 insertions(+), 12 deletions(-) (limited to 'src/northbridge/intel/haswell') diff --git a/src/northbridge/intel/haswell/memmap.c b/src/northbridge/intel/haswell/memmap.c index 14b66a0fc7..13881e99b2 100644 --- a/src/northbridge/intel/haswell/memmap.c +++ b/src/northbridge/intel/haswell/memmap.c @@ -53,29 +53,21 @@ void stage_cache_external_region(void **base, size_t *size) *base = (void *)((uint32_t)cbmem_top() + RESERVED_SMM_OFFSET); } -/* platform_enter_postcar() determines the stack to use after - * cache-as-ram is torn down as well as the MTRR settings to use, - * and continues execution in postcar stage. */ -void platform_enter_postcar(void) +void fill_postcar_frame(struct postcar_frame *pcf) { - struct postcar_frame pcf; uintptr_t top_of_ram; - if (postcar_frame_init(&pcf, 0)) - die("Unable to initialize postcar frame.\n"); /* Cache the ROM as WP just below 4GiB. */ - postcar_frame_add_romcache(&pcf, MTRR_TYPE_WRPROT); + postcar_frame_add_romcache(pcf, MTRR_TYPE_WRPROT); /* Cache RAM as WB from 0 -> CACHE_TMP_RAMTOP. */ - postcar_frame_add_mtrr(&pcf, 0, CACHE_TMP_RAMTOP, MTRR_TYPE_WRBACK); + postcar_frame_add_mtrr(pcf, 0, CACHE_TMP_RAMTOP, MTRR_TYPE_WRBACK); /* Cache at least 8 MiB below the top of ram, and at most 8 MiB * above top of the ram. This satisfies MTRR alignment requirement * with different TSEG size configurations. */ top_of_ram = ALIGN_DOWN((uintptr_t)cbmem_top(), 8*MiB); - postcar_frame_add_mtrr(&pcf, top_of_ram - 8*MiB, 16*MiB, + postcar_frame_add_mtrr(pcf, top_of_ram - 8*MiB, 16*MiB, MTRR_TYPE_WRBACK); - - run_postcar_phase(&pcf); } -- cgit v1.2.3