[U-Boot] [PATCH 2/3] ARM: board: cm_fx6: fixup mtd partitions in the fdt

[Christopher Spinrath]

The cm-fx6 module has an on-board st,m25p compatible spi flash chip
used for u-boot (binary & environment). Overwrite the partitions in
the device tree by the partition table provided in the mtdparts
environment variable, if it is set.

This allows to specify a kernel independent partitioning in the
environment and provides a convient way for the user to adapt the
partition table.

Signed-off-by: Christopher Spinrath <christopher.spinrath at rwth-aachen.de>
---
 board/compulab/cm_fx6/cm_fx6.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/board/compulab/cm_fx6/cm_fx6.c b/board/compulab/cm_fx6/cm_fx6.c
index 712057a..81a7ae2 100644
--- a/board/compulab/cm_fx6/cm_fx6.c
+++ b/board/compulab/cm_fx6/cm_fx6.c
@@ -12,6 +12,7 @@
 #include <dm.h>
 #include <fsl_esdhc.h>
 #include <miiphy.h>
+#include <mtd_node.h>
 #include <netdev.h>
 #include <errno.h>
 #include <usb.h>
@@ -28,6 +29,7 @@
 #include <asm/io.h>
 #include <asm/gpio.h>
 #include <dm/platform_data/serial_mxc.h>
+#include <jffs2/load_kernel.h>
 #include "common.h"
 #include "../common/eeprom.h"
 #include "../common/common.h"
@@ -581,6 +583,13 @@ int cm_fx6_setup_ecspi(void) { return 0; }
 
 #ifdef CONFIG_OF_BOARD_SETUP
 #define USDHC3_PATH	"/soc/aips-bus at 02100000/usdhc at 02198000/"
+
+#ifdef CONFIG_FDT_FIXUP_PARTITIONS
+struct node_info nodes[] = {
+	{ "st,m25p",	MTD_DEV_TYPE_NOR,	},
+};
+#endif
+
 int ft_board_setup(void *blob, bd_t *bd)
 {
 	u32 baseboard_rev;
@@ -589,6 +598,8 @@ int ft_board_setup(void *blob, bd_t *bd)
 	char baseboard_name[16];
 	int err;
 
+	fdt_shrink_to_minimum(blob); /* Make room for new properties */
+
 	/* MAC addr */
 	if (eth_getenv_enetaddr("ethaddr", enetaddr)) {
 		fdt_find_and_setprop(blob,
@@ -607,7 +618,6 @@ int ft_board_setup(void *blob, bd_t *bd)
 		return 0; /* Assume not an early revision SB-FX6m baseboard */
 
 	if (!strncmp("SB-FX6m", baseboard_name, 7) && baseboard_rev <= 120) {
-		fdt_shrink_to_minimum(blob); /* Make room for new properties */
 		nodeoffset = fdt_path_offset(blob, USDHC3_PATH);
 		fdt_delprop(blob, nodeoffset, "cd-gpios");
 		fdt_find_and_setprop(blob, USDHC3_PATH, "broken-cd",
@@ -616,6 +626,10 @@ int ft_board_setup(void *blob, bd_t *bd)
 				     NULL, 0, 1);
 	}
 
+#ifdef CONFIG_FDT_FIXUP_PARTITIONS
+	fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
+#endif
+
 	return 0;
 }
 #endif
-- 
2.8.3