Stefan Reinauer (stefan.reinauer@coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/872
-gerrit
commit 5a596f7a8fb66d12c2888d8bb91ea883c2fceea0 Author: Stefan Reinauer reinauer@chromium.org Date: Tue Apr 3 16:21:04 2012 -0700
Add constants for fast path resume copying
cache as ram does not usually cache the ram before it is up. Hence, if romstage.c backs up resume memory, the involved memcpy is always uncached. This makes resume very slow. On Sandybridge we copy the memory later, after enabling caching, and that allows us to resume in as little as 250ms.
Change-Id: I31a71ad4468679d39880cf9a8c4e497bb7addf8f Signed-off-by: Stefan Reinauer reinauer@google.com --- src/include/cbmem.h | 17 +++++++++++++---- 1 files changed, 13 insertions(+), 4 deletions(-)
diff --git a/src/include/cbmem.h b/src/include/cbmem.h index 6a48dd2..c55a7ca 100644 --- a/src/include/cbmem.h +++ b/src/include/cbmem.h @@ -27,13 +27,15 @@ #define HIGH_MEMORY_DEF_SIZE ( 128 * 1024 ) #endif
-#ifndef __PRE_RAM__ -extern uint64_t high_tables_base, high_tables_size; -#endif - #if CONFIG_HAVE_ACPI_RESUME #define HIGH_MEMORY_SIZE ((CONFIG_RAMTOP - CONFIG_RAMBASE) + HIGH_MEMORY_DEF_SIZE) #define HIGH_MEMORY_SAVE ( HIGH_MEMORY_SIZE - HIGH_MEMORY_DEF_SIZE ) + +/* Delegation of resume backup memory so we don't have to + * (slowly) handle backing up OS memory in romstage.c + */ +#define CBMEM_BOOT_MODE 0x610 +#define CBMEM_RESUME_BACKUP 0x614 #else #define HIGH_MEMORY_SIZE HIGH_MEMORY_DEF_SIZE #endif @@ -47,9 +49,15 @@ extern uint64_t high_tables_base, high_tables_size; #define CBMEM_ID_RESUME 0x5245534d #define CBMEM_ID_SMBIOS 0x534d4254 #define CBMEM_ID_TIMESTAMP 0x54494d45 +#define CBMEM_ID_MRCDATA 0x4d524344 #define CBMEM_ID_CONSOLE 0x434f4e53 #define CBMEM_ID_NONE 0x00000000
+#ifndef __ASSEMBLER__ +#ifndef __PRE_RAM__ +extern uint64_t high_tables_base, high_tables_size; +#endif + int cbmem_initialize(void);
void cbmem_init(u64 baseaddr, u64 size); @@ -65,3 +73,4 @@ extern struct cbmem_entry *get_cbmem_toc(void); void set_cbmem_toc(struct cbmem_entry *); #endif #endif +#endif