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| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2013-09-04 13:26:11 +0300 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2013-09-11 07:18:02 +0200 |
| commit | bc90e15d3f8e841ccf229fca5d7df99436ff4bdb (patch) | |
| tree | bbbd4f2904b42d201d7e2fbccea5bfcbeeeed166 /src/arch/x86/boot | |
| parent | c04afd6433cd53acdc727ad760cde9c40090030b (diff) | |
| download | coreboot-bc90e15d3f8e841ccf229fca5d7df99436ff4bdb.tar.xz | |
CBMEM: Backup top_of_ram instead of cbmem_toc
AMD northbridges have a complex way to resolve top_of_ram.
Once it is resolved, it is stored in NVRAM to be used on resume.
TODO: Redesign these get_top_of_ram() functions from scratch.
Change-Id: I3cceb7e9b8b07620dacf138e99f98dc818c65341
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/3557
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
Diffstat (limited to 'src/arch/x86/boot')
| -rw-r--r-- | src/arch/x86/boot/cbmem.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/arch/x86/boot/cbmem.c b/src/arch/x86/boot/cbmem.c index 333ca55ccf..991a3e6f01 100644 --- a/src/arch/x86/boot/cbmem.c +++ b/src/arch/x86/boot/cbmem.c @@ -40,12 +40,18 @@ void get_cbmem_table(uint64_t *base, uint64_t *size) #endif #if !CONFIG_DYNAMIC_CBMEM && !defined(__PRE_RAM__) +void __attribute__((weak)) backup_top_of_ram(uint64_t ramtop) +{ + /* Do nothing. Chipset may have implementation to save ramtop in NVRAM. */ +} + /* This is for compatibility with old boards only. Any new chipset and board * must implement get_top_of_ram() for both romstage and ramstage to support * features like CAR_MIGRATION and CBMEM_CONSOLE. */ void set_top_of_ram(uint64_t ramtop) { + backup_top_of_ram(ramtop); cbmem_late_set_table(ramtop - HIGH_MEMORY_SIZE, HIGH_MEMORY_SIZE); } #endif |