diff options
Diffstat (limited to 'src/include/cbmem.h')
| -rw-r--r-- | src/include/cbmem.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/include/cbmem.h b/src/include/cbmem.h index 4005fa205a..a22c420ad3 100644 --- a/src/include/cbmem.h +++ b/src/include/cbmem.h @@ -73,7 +73,18 @@ void cbmem_top_init(void); * below 4GiB for 32bit coreboot builds. On 64bit coreboot builds there's no * upper limit. This should not be called before memory is initialized. */ +/* The assumption is made that the result of cbmem_top_romstage fits in the size + of uintptr_t in the ramstage. */ +extern uintptr_t _cbmem_top_ptr; void *cbmem_top(void); +/* With CONFIG_RAMSTAGE_CBMEM_TOP_ARG set, the result of cbmem_top is passed via + * calling arguments to the next stage and saved in the global _cbmem_top_ptr + * global variable. Only a romstage callback needs to be implemented by the + * platform. It is up to the stages after romstage to save the calling argument + * in the _cbmem_top_ptr symbol. Without CONFIG_RAMSTAGE_CBMEM_TOP_ARG the same + * implementation as used in romstage will be used. + */ +void *cbmem_top_chipset(void); /* Add a cbmem entry of a given size and id. These return NULL on failure. The * add function performs a find first and do not check against the original |