diff options
| -rw-r--r-- | include/fdtdec.h | 18 | ||||
| -rw-r--r-- | lib/fdtdec.c | 24 |
2 files changed, 42 insertions, 0 deletions
diff --git a/include/fdtdec.h b/include/fdtdec.h index 19bab79..aa695df 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -530,4 +530,22 @@ const u8 *fdtdec_locate_byte_array(const void *blob, int node, */ int fdtdec_decode_region(const void *blob, int node, const char *prop_name, void **ptrp, size_t *size); + +/* A flash map entry, containing an offset and length */ +struct fmap_entry { + uint32_t offset; + uint32_t length; +}; + +/** + * Read a flash entry from the fdt + * + * @param blob FDT blob + * @param node Offset of node to read + * @param name Name of node being read + * @param entry Place to put offset and size of this node + * @return 0 if ok, -ve on error + */ +int fdtdec_read_fmap_entry(const void *blob, int node, const char *name, + struct fmap_entry *entry); #endif diff --git a/lib/fdtdec.c b/lib/fdtdec.c index 1fecab3..c54d97b 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -617,3 +617,27 @@ int fdtdec_decode_region(const void *blob, int node, debug("%s: size=%zx\n", __func__, *size); return 0; } + +/** + * Read a flash entry from the fdt + * + * @param blob FDT blob + * @param node Offset of node to read + * @param name Name of node being read + * @param entry Place to put offset and size of this node + * @return 0 if ok, -ve on error + */ +int fdtdec_read_fmap_entry(const void *blob, int node, const char *name, + struct fmap_entry *entry) +{ + u32 reg[2]; + + if (fdtdec_get_int_array(blob, node, "reg", reg, 2)) { + debug("Node '%s' has bad/missing 'reg' property\n", name); + return -FDT_ERR_NOTFOUND; + } + entry->offset = reg[0]; + entry->length = reg[1]; + + return 0; +} |