[U-Boot] [PATCH 2/2 v3] ppc4xx: Update flash size in reg property of the NOR flash node

[Stefan Roese]

Till now only the ranges in the ebc node are updated with the values
currently configured in the PPC4xx EBC controller. With this patch now
the NOR flash size is updated in the device tree blob as well. This is
done by scanning the compatible nodes "cfi-flash" and "jedec-flash"
for the correct chip select number.

This size fixup is enabled for all AMCC eval board right now. Other
4xx boards may want to enable it as well, if this problem with multiple
NOR FLASH sizes exists.

Signed-off-by: Stefan Roese <sr at denx.de>
Cc: Wolfgang Denk <wd at denx.de>
---
Changes in v3:
- Moved function fdt_fixup_nor_flash_size() to common/fdt_support.c
  so that other platforms/board may use it too.

Changes in v2:
- NOR flash nodes are now scanned/detected via the compatible node.

 cpu/ppc4xx/fdt.c              |    8 +++++++-
 include/configs/amcc-common.h |    2 ++
 2 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/cpu/ppc4xx/fdt.c b/cpu/ppc4xx/fdt.c
index 496e028..8cd3da1 100644
--- a/cpu/ppc4xx/fdt.c
+++ b/cpu/ppc4xx/fdt.c
@@ -59,11 +59,17 @@ void __ft_board_setup(void *blob, bd_t *bd)
 			*p++ = 0;
 			*p++ = bxcr & EBC_BXCR_BAS_MASK;
 			*p++ = EBC_BXCR_BANK_SIZE(bxcr);
+
+#ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE
+			/* Try to update reg property in nor flash node too */
+			fdt_fixup_nor_flash_size(blob, i,
+						 EBC_BXCR_BANK_SIZE(bxcr));
+#endif
 		}
 	}
 
 	/* Some 405 PPC's have EBC as direct PLB child in the dts */
-	if (fdt_path_offset(blob, "/plb/opb/ebc") < 0)
+	if (fdt_path_offset(blob, ebc_path) < 0)
 		strcpy(ebc_path, "/plb/ebc");
 	rc = fdt_find_and_setprop(blob, ebc_path, "ranges", ranges,
 				  (p - ranges) * sizeof(u32), 1);
diff --git a/include/configs/amcc-common.h b/include/configs/amcc-common.h
index 51128a3..8cd97b8 100644
--- a/include/configs/amcc-common.h
+++ b/include/configs/amcc-common.h
@@ -156,6 +156,8 @@
  */
 #define CONFIG_OF_LIBFDT
 #define CONFIG_OF_BOARD_SETUP
+/* Update size in "reg" property of NOR FLASH device tree nodes */
+#define CONFIG_FDT_FIXUP_NOR_FLASH_SIZE
 
 /*
  * Booting and default environment
-- 
1.6.5.1