summaryrefslogtreecommitdiff
path: root/common/fdt_support.c
diff options
context:
space:
mode:
Diffstat (limited to 'common/fdt_support.c')
-rw-r--r--common/fdt_support.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/common/fdt_support.c b/common/fdt_support.c
index 89164a1..40ff00a 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -692,3 +692,47 @@ int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) {
return 0;
}
#endif
+
+#ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE
+/*
+ * This function can be used to update the size in the "reg" property
+ * of the NOR FLASH device nodes. This is necessary for boards with
+ * non-fixed NOR FLASH sizes.
+ */
+int fdt_fixup_nor_flash_size(void *blob, int cs, u32 size)
+{
+ char compat[][16] = { "cfi-flash", "jedec-flash" };
+ int off;
+ int len;
+ struct fdt_property *prop;
+ u32 *reg;
+ int i;
+
+ for (i = 0; i < 2; i++) {
+ off = fdt_node_offset_by_compatible(blob, -1, compat[i]);
+ while (off != -FDT_ERR_NOTFOUND) {
+ /*
+ * Found one compatible node, now check if this one
+ * has the correct CS
+ */
+ prop = fdt_get_property_w(blob, off, "reg", &len);
+ if (prop) {
+ reg = (u32 *)&prop->data[0];
+ if (reg[0] == cs) {
+ reg[2] = size;
+ fdt_setprop(blob, off, "reg", reg,
+ 3 * sizeof(u32));
+
+ return 0;
+ }
+ }
+
+ /* Move to next compatible node */
+ off = fdt_node_offset_by_compatible(blob, off,
+ compat[i]);
+ }
+ }
+
+ return -1;
+}
+#endif