From 8d6e0e0a72ed81d44ba61add0c2aab55bb217412 Mon Sep 17 00:00:00 2001 From: Marshall Dawson Date: Tue, 30 Jan 2018 15:33:23 -0700 Subject: lib/stage_cache: Add save/get raw storage Leverage the stage_cache mechanism to store a non-specific type of data. This is not interesting when the location for the cache is in cbmem. However it will be more useful when an external location is used, e.g. when the cache is in TSEG, locked from user modification. Change-Id: Iaf0b25ebe14c176bbd24fc8942f902f627ca8e6f Signed-off-by: Marshall Dawson Reviewed-on: https://review.coreboot.org/23518 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/lib/cbmem_stage_cache.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) (limited to 'src/lib/cbmem_stage_cache.c') diff --git a/src/lib/cbmem_stage_cache.c b/src/lib/cbmem_stage_cache.c index f17f12c892..299cb00dcf 100644 --- a/src/lib/cbmem_stage_cache.c +++ b/src/lib/cbmem_stage_cache.c @@ -45,6 +45,35 @@ void stage_cache_add(int stage_id, const struct prog *stage) memcpy(c, prog_start(stage), prog_size(stage)); } +void stage_cache_add_raw(int stage_id, const void *base, const size_t size) +{ + void *c; + + c = cbmem_add(CBMEM_ID_STAGEx_RAW + stage_id, size); + if (c == NULL) { + printk(BIOS_DEBUG, "Error: Can't add %x raw data to cbmem\n", + CBMEM_ID_STAGEx_RAW + stage_id); + return; + } + + memcpy(c, base, size); +} + +void stage_cache_get_raw(int stage_id, void **base, size_t *size) +{ + const struct cbmem_entry *e; + + e = cbmem_entry_find(CBMEM_ID_STAGEx_RAW + stage_id); + if (e == NULL) { + printk(BIOS_ERR, "Error: Can't find raw %x data in cbmem\n", + CBMEM_ID_STAGEx_RAW + stage_id); + return; + } + + *base = cbmem_entry_start(e); + *size = cbmem_entry_size(e); +} + void stage_cache_load_stage(int stage_id, struct prog *stage) { struct stage_cache *meta; -- cgit v1.2.3