diff options
| -rw-r--r-- | src/include/cbmem.h | 5 | ||||
| -rw-r--r-- | src/lib/imd_cbmem.c | 21 |
2 files changed, 26 insertions, 0 deletions
diff --git a/src/include/cbmem.h b/src/include/cbmem.h index b2d2a8be6c..007bc54b76 100644 --- a/src/include/cbmem.h +++ b/src/include/cbmem.h @@ -64,6 +64,11 @@ int cbmem_initialize_id_size(u32 id, u64 size); void cbmem_initialize_empty(void); void cbmem_initialize_empty_id_size(u32 id, u64 size); +/* Optional hook for platforms to initialize cbmem_top() value. When employed + * it's called a single time during boot at cbmem initialization/recovery + * time. */ +void cbmem_top_init(void); + /* Return the top address for dynamic cbmem. The address returned needs to * be consistent across romstage and ramstage, and it is required to be * below 4GiB. diff --git a/src/lib/imd_cbmem.c b/src/lib/imd_cbmem.c index ba00c2e9db..5713c2c328 100644 --- a/src/lib/imd_cbmem.c +++ b/src/lib/imd_cbmem.c @@ -109,12 +109,31 @@ void cbmem_initialize_empty(void) cbmem_initialize_empty_id_size(0, 0); } +void __attribute__((weak)) cbmem_top_init(void) +{ +} + +static void cbmem_top_init_once(void) +{ + /* Call one-time hook on expected cbmem init during boot. This sequence + assumes first init call is in romstage for early cbmem init and + ramstage for late cbmem init. */ + if (IS_ENABLED(CONFIG_EARLY_CBMEM_INIT) && !ENV_ROMSTAGE) + return; + if (IS_ENABLED(CONFIG_LATE_CBMEM_INIT) && !ENV_RAMSTAGE) + return; + + cbmem_top_init(); +} + void cbmem_initialize_empty_id_size(u32 id, u64 size) { struct imd *imd; struct imd imd_backing; const int no_recovery = 0; + cbmem_top_init_once(); + imd = imd_init_backing(&imd_backing); imd_handle_init(imd, cbmem_top()); @@ -145,6 +164,8 @@ int cbmem_initialize_id_size(u32 id, u64 size) struct imd imd_backing; const int recovery = 1; + cbmem_top_init_once(); + imd = imd_init_backing(&imd_backing); imd_handle_init(imd, cbmem_top()); |