diff options
| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2016-06-28 07:38:46 +0300 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2016-11-09 20:52:07 +0100 |
| commit | 9d6f365643d78c223b7ebf9e214381ec707b482a (patch) | |
| tree | 96a77b4bb24e865f854bec44cb3e4f2d2061e43d /src/include/program_loading.h | |
| parent | 2c7ad8c8d3f7e508ee64f1af4fe81a60b8c84da1 (diff) | |
ACPI S3: Remove HIGH_MEMORY_SAVE where possible
Add implementation to use actual requirements of ramstage size
for S3 resume backup in CBMEM. The backup covers complete pages of 4 KiB.
Only the required amount of low memory is backed up when ACPI_TINY_LOWMEM_BACKUP
is selected for the platform. Enable this option for AGESA and binaryPI, other
platforms (without RELOCATABLE_RAMSTAGE) currently keep their romstage ramstack
in low memory for s3 resume path.
Change-Id: Ide7ce013f3727c2928cdb00fbcc7e7e84e859ff1
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/15255
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Diffstat (limited to 'src/include/program_loading.h')
| -rw-r--r-- | src/include/program_loading.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/include/program_loading.h b/src/include/program_loading.h index 08687f3128..416e2e9418 100644 --- a/src/include/program_loading.h +++ b/src/include/program_loading.h @@ -173,6 +173,10 @@ uintptr_t romstage_ram_stack_base(size_t size, int src); uintptr_t romstage_ram_stack_top(void); uintptr_t romstage_ram_stack_bottom(void); +/* Backup OS memory to CBMEM_ID_RESUME on ACPI S3 resume path, + * if ramstage overwrites low memory. */ +void backup_ramstage_section(uintptr_t base, size_t size); + /*********************** * PAYLOAD LOADING * ***********************/ |