Michał Żygowski has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/37330 )
Change subject: sb/amd/cimx/sb800/ramtop.c: save and restore cbmem_top via BIOSRAM ......................................................................
sb/amd/cimx/sb800/ramtop.c: save and restore cbmem_top via BIOSRAM
TEST=boot PC Engines apu1 with C bootblock patch and launch Debian with Linux kernel 4.14.50
Signed-off-by: Michał Żygowski michal.zygowski@3mdeb.com Change-Id: Iece10ea97c5bd45c96fc8af092e80f13d215e13d --- M src/southbridge/amd/cimx/sb800/ramtop.c 1 file changed, 5 insertions(+), 16 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/30/37330/1
diff --git a/src/southbridge/amd/cimx/sb800/ramtop.c b/src/southbridge/amd/cimx/sb800/ramtop.c index b9fc00d..f724153 100644 --- a/src/southbridge/amd/cimx/sb800/ramtop.c +++ b/src/southbridge/amd/cimx/sb800/ramtop.c @@ -14,11 +14,14 @@ */
#include <stdint.h> +#include <amdblocks/acpimmio.h> #include <arch/io.h> #include <arch/acpi.h> #include <cbmem.h> #include "SBPLATFORM.h"
+#define BIOSRAM_CBMEM_TOP 0xf8 /* 4 bytes */ + int acpi_get_sleep_type(void) { u16 tmp = inw(PM1_CNT_BLK_ADDRESS); @@ -28,24 +31,10 @@
void backup_top_of_low_cacheable(uintptr_t ramtop) { - u32 dword = ramtop; - int nvram_pos = 0xf8, i; /* temp */ - for (i = 0; i < 4; i++) { - outb(nvram_pos, BIOSRAM_INDEX); - outb((dword >> (8 * i)) & 0xff, BIOSRAM_DATA); - nvram_pos++; - } + biosram_write32(BIOSRAM_CBMEM_TOP, ramtop); }
uintptr_t restore_top_of_low_cacheable(void) { - u32 xdata = 0; - int xnvram_pos = 0xf8, xi; - for (xi = 0; xi < 4; xi++) { - outb(xnvram_pos, BIOSRAM_INDEX); - xdata &= ~(0xff << (xi * 8)); - xdata |= inb(BIOSRAM_DATA) << (xi * 8); - xnvram_pos++; - } - return xdata; + return biosram_read32(BIOSRAM_CBMEM_TOP); }
Michał Żygowski has abandoned this change. ( https://review.coreboot.org/c/coreboot/+/37330 )
Change subject: sb/amd/cimx/sb800/ramtop.c: save and restore cbmem_top via BIOSRAM ......................................................................
Abandoned
Done in CB:37402