From 942ad6a137027d6a7d8d082dee20bb64c81dc813 Mon Sep 17 00:00:00 2001 From: Arthur Heymans Date: Sat, 12 Oct 2019 18:06:46 +0200 Subject: cpu/intel/car: Correctly cache the bootblock with C_ENVIRONMENT_BOOTBLOCK With CONFIG_C_ENVIRONMENT_BOOTBLOCK it makes more sense to rely on the size of the bootblock over CONFIG_XIP_ROM_SIZE. To make this work, only powers of 2 are allowed as bootblock size. Change-Id: Ic8104ca9c51e4d2eccdb277e4c2111d2da662f3e Signed-off-by: Arthur Heymans Reviewed-on: https://review.coreboot.org/c/coreboot/+/35990 Tested-by: build bot (Jenkins) Reviewed-by: Nico Huber --- src/cpu/intel/car/p4-netburst/cache_as_ram.S | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'src/cpu/intel/car/p4-netburst') diff --git a/src/cpu/intel/car/p4-netburst/cache_as_ram.S b/src/cpu/intel/car/p4-netburst/cache_as_ram.S index b7eb37b6a6..2cd0c5e922 100644 --- a/src/cpu/intel/car/p4-netburst/cache_as_ram.S +++ b/src/cpu/intel/car/p4-netburst/cache_as_ram.S @@ -26,6 +26,15 @@ #define CACHE_AS_RAM_SIZE CONFIG_DCACHE_RAM_SIZE #define CACHE_AS_RAM_BASE CONFIG_DCACHE_RAM_BASE +#if CONFIG(C_ENVIRONMENT_BOOTBLOCK) +#if ((CONFIG_C_ENV_BOOTBLOCK_SIZE & (CONFIG_C_ENV_BOOTBLOCK_SIZE - 1)) != 0) +#error "CONFIG_C_ENV_BOOTBLOCK_SIZE must be a power of 2!" +#endif +#define XIP_ROM_SIZE CONFIG_C_ENV_BOOTBLOCK_SIZE +#else +#define XIP_ROM_SIZE CONFIG_XIP_ROM_SIZE +#endif + .global bootblock_pre_c_entry .code32 @@ -354,13 +363,13 @@ cache_rom: * https://mail.coreboot.org/pipermail/coreboot/2010-October/060922.html */ movl $_program, %eax - andl $(~(CONFIG_XIP_ROM_SIZE - 1)), %eax + andl $(~(XIP_ROM_SIZE - 1)), %eax orl $MTRR_TYPE_WRPROT, %eax wrmsr movl $MTRR_PHYS_MASK(1), %ecx rdmsr - movl $(~(CONFIG_XIP_ROM_SIZE - 1) | MTRR_PHYS_MASK_VALID), %eax + movl $(~(XIP_ROM_SIZE - 1) | MTRR_PHYS_MASK_VALID), %eax wrmsr fill_cache: -- cgit v1.2.3