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| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-08-04 19:54:32 +0300 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-08-07 05:47:33 +0000 |
| commit | b2a5f0b9c2eb79f1a9d4fe4f87f1460c1be7fa6d (patch) | |
| tree | 37b8bd523e8a672853bba15804cb161278824693 /src/include | |
| parent | fe481eb3e5e8e8d39d892bfcfe085bc7d49ff886 (diff) | |
| download | coreboot-b2a5f0b9c2eb79f1a9d4fe4f87f1460c1be7fa6d.tar.xz | |
cpu/x86/smm: Promote smm_subregion()
No need to limit these declarations to FSP. Both
PARALLEL_MP_INIT smm_relocate() and TSEG_STAGE_CACHE
can be built on top of this.
Change-Id: I7b0b9b8c8bee03aabe251c50c47dc42f6596e169
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34701
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/cpu/x86/smm.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/include/cpu/x86/smm.h b/src/include/cpu/x86/smm.h index 3071106080..edd1be8588 100644 --- a/src/include/cpu/x86/smm.h +++ b/src/include/cpu/x86/smm.h @@ -583,4 +583,26 @@ int smm_load_module(void *smram, size_t size, struct smm_loader_params *params); void *backup_default_smm_area(void); void restore_default_smm_area(void *smm_save_area); +/* + * Fills in the arguments for the entire SMM region covered by chipset + * protections. e.g. TSEG. + */ +void smm_region(void **start, size_t *size); +void smm_region_info(void **start, size_t *size); + +enum { + /* SMM handler area. */ + SMM_SUBREGION_HANDLER, + /* SMM cache region. */ + SMM_SUBREGION_CACHE, + /* Chipset specific area. */ + SMM_SUBREGION_CHIPSET, + /* Total sub regions supported. */ + SMM_SUBREGION_NUM, +}; + +/* Fills in the start and size for the requested SMM subregion. Returns + * 0 on success, < 0 on failure. */ +int smm_subregion(int sub, void **start, size_t *size); + #endif /* CPU_X86_SMM_H */ |