diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2020-02-06 18:27:50 +0100 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-08-17 06:22:58 +0000 |
| commit | 54a4f172d80d0490ecd6ad07e3c23341a27bed8f (patch) | |
| tree | 65fc58cd511d8c3323c6cdc3bf6d953a420f834f /src | |
| parent | a6a2f9372c492c2e6ca4404b372054b1fd82e1ee (diff) | |
lib/imd_cbmem.c: Add a helper function to indicate that cbmem is ready
This can be used in romstage in particular to know if dram is ready.
Change-Id: I0231ab9c0b78a69faa762e0a97378bf0b50eebaf
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38736
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/cbmem.h | 14 | ||||
| -rw-r--r-- | src/lib/imd_cbmem.c | 6 |
2 files changed, 20 insertions, 0 deletions
diff --git a/src/include/cbmem.h b/src/include/cbmem.h index b548cd9559..7e1da17b98 100644 --- a/src/include/cbmem.h +++ b/src/include/cbmem.h @@ -155,4 +155,18 @@ static inline int cbmem_possibly_online(void) return 1; } +/* Returns 1 after running cbmem init hooks, 0 otherwise. */ +static inline int cbmem_online(void) +{ + extern int cbmem_initialized; + + if (!cbmem_possibly_online()) + return 0; + + if (ENV_ROMSTAGE) + return cbmem_initialized; + + return 1; +} + #endif /* _CBMEM_H_ */ diff --git a/src/lib/imd_cbmem.c b/src/lib/imd_cbmem.c index 7638e0e578..4b7c4120b0 100644 --- a/src/lib/imd_cbmem.c +++ b/src/lib/imd_cbmem.c @@ -30,6 +30,8 @@ void *cbmem_top(void) dead_code(); } +int cbmem_initialized; + static inline const struct cbmem_entry *imd_to_cbmem(const struct imd_entry *e) { return (const struct cbmem_entry *)e; @@ -79,6 +81,8 @@ void cbmem_initialize_empty_id_size(u32 id, u64 size) /* Complete migration to CBMEM. */ cbmem_run_init_hooks(no_recovery); + + cbmem_initialized = 1; } int cbmem_initialize(void) @@ -112,6 +116,8 @@ int cbmem_initialize_id_size(u32 id, u64 size) /* Complete migration to CBMEM. */ cbmem_run_init_hooks(recovery); + cbmem_initialized = 1; + /* Recovery successful. */ return 0; } |