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authorStefan Roese <sr@denx.de>2009-10-21 11:59:52 +0200
committerStefan Roese <sr@denx.de>2009-10-23 15:55:23 +0200
commit30d45c0d3ea2231f9131276ea113595959a0720e (patch)
tree8b96098e1b7d458715d1803b79a7c6d67efc2dbb
parent76706cb86b1c76954ff5353db6757ab99cfd95fb (diff)
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fdt: Add fdt_fixup_nor_flash_size() to fixup NOR FLASH size in dtb
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. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Gerald Van Baren <vanbaren@cideas.com> Acked-by: Wolfgang Denk <wd@denx.de>
-rw-r--r--common/fdt_support.c44
-rw-r--r--include/fdt_support.h2
2 files changed, 46 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
diff --git a/include/fdt_support.h b/include/fdt_support.h
index 16734c5..0a9dd0d 100644
--- a/include/fdt_support.h
+++ b/include/fdt_support.h
@@ -79,5 +79,7 @@ void ft_pci_setup(void *blob, bd_t *bd);
void set_working_fdt_addr(void *addr);
int fdt_resize(void *blob);
+int fdt_fixup_nor_flash_size(void *blob, int cs, u32 size);
+
#endif /* ifdef CONFIG_OF_LIBFDT */
#endif /* ifndef __FDT_SUPPORT_H */