diff options
| author | Lee Leahy <leroy.p.leahy@intel.com> | 2015-05-08 11:33:55 -0700 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2015-05-13 17:07:51 +0200 |
| commit | 522149c310ad8885cd0b58a88cacac24852a541f (patch) | |
| tree | 03e5a5c6231a741aa88e1c26b8392571b5eab35d /src/include | |
| parent | 0a50d9b35334d03f13b38e21497ba0aae8b16712 (diff) | |
cbmem: Add initial allocation support
Add support to allocate a region just below CBMEM root. This region is
reserved for FSP 1.1 to use for its stack and variables.
BRANCH=none
BUG=None
TEST=Build and run on Braswell
Change-Id: I1d4b36ab366e6f8e036335c56c1756f2dfaab3f5
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: http://review.coreboot.org/10148
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/cbmem.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/include/cbmem.h b/src/include/cbmem.h index 07e5645397..08c1d647bd 100644 --- a/src/include/cbmem.h +++ b/src/include/cbmem.h @@ -146,12 +146,30 @@ struct cbmem_entry; */ #define DYN_CBMEM_ALIGN_SIZE (4096) +#define CBMEM_ROOT_SIZE DYN_CBMEM_ALIGN_SIZE + +/* The root region is at least DYN_CBMEM_ALIGN_SIZE . */ +#define CBMEM_ROOT_MIN_SIZE DYN_CBMEM_ALIGN_SIZE +#define CBMEM_LG_ALIGN CBMEM_ROOT_MIN_SIZE + +/* Small allocation parameters. */ +#define CBMEM_SM_ROOT_SIZE 1024 +#define CBMEM_SM_ALIGN 32 + +/* Determine the size for CBMEM root and the small allocations */ +static inline size_t cbmem_overhead_size(void) +{ + return 2 * CBMEM_ROOT_MIN_SIZE; +} /* By default cbmem is attempted to be recovered. Returns 0 if cbmem was * recovered or 1 if cbmem had to be reinitialized. */ int cbmem_initialize(void); +int cbmem_initialize_id_size(u32 id, u64 size); + /* Initialize cbmem to be empty. */ void cbmem_initialize_empty(void); +void cbmem_initialize_empty_id_size(u32 id, u64 size); /* Return the top address for dynamic cbmem. The address returned needs to * be consistent across romstage and ramstage, and it is required to be |