From 522149c310ad8885cd0b58a88cacac24852a541f Mon Sep 17 00:00:00 2001 From: Lee Leahy Date: Fri, 8 May 2015 11:33:55 -0700 Subject: 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 Reviewed-on: http://review.coreboot.org/10148 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/include/cbmem.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'src/include') 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 -- cgit v1.2.3