diff options
| -rw-r--r-- | src/lib/cbfs.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/lib/cbfs.c b/src/lib/cbfs.c index 05b939cdfe..9cdc365963 100644 --- a/src/lib/cbfs.c +++ b/src/lib/cbfs.c @@ -220,6 +220,16 @@ int cbfs_prog_stage_load(struct prog *pstage) load = (void *)(uintptr_t)stage.load; entry = (void *)(uintptr_t)stage.entry; + /* Hacky way to not load programs over read only media. The stages + * that would hit this path initialize themselves. */ + if (ENV_VERSTAGE && IS_ENABLED(CONFIG_ARCH_X86) && + IS_ENABLED(CONFIG_SPI_FLASH_MEMORY_MAPPED)) { + void *mapping = rdev_mmap(fh, foffset, fsize); + rdev_munmap(fh, mapping); + if (mapping == load) + goto out; + } + if (stage.compression == CBFS_COMPRESS_NONE) { if (rdev_readat(fh, load, foffset, fsize) != fsize) return -1; @@ -242,6 +252,8 @@ int cbfs_prog_stage_load(struct prog *pstage) memset(&load[fsize], 0, stage.memlen - fsize); arch_segment_loaded((uintptr_t)load, stage.memlen, SEG_FINAL); + +out: prog_set_area(pstage, load, stage.memlen); prog_set_entry(pstage, entry, NULL); |