ARM omap: add xload helper functions

Add some common xload helper functions to determine the boot source
on omap3/4 and to load images from mmc and nand.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 54 insertions, 0 deletions

diff --git a/arch/arm/mach-omap/xload.c b/arch/arm/mach-omap/xload.c
new file mode 100644
index 0000000000..216b9b5aba
--- /dev/null
+++ b/arch/arm/mach-omap/xload.c
@@ -0,0 +1,54 @@
+#include <common.h>
+#include <partition.h>
+#include <nand.h>
+#include <driver.h>
+#include <linux/mtd/mtd.h>
+#include <fs.h>
+#include <fcntl.h>
+#include <mach/xload.h>
+#include <sizes.h>
+
+void *omap_xload_boot_nand(int offset, int size)
+{
+	int ret;
+	void *to = xmalloc(size);
+	struct cdev *cdev;
+
+	devfs_add_partition("nand0", offset, size, PARTITION_FIXED, "x");
+	dev_add_bb_dev("x", "bbx");
+
+	cdev = cdev_open("bbx", O_RDONLY);
+	if (!cdev) {
+		printf("failed to open nand\n");
+		return NULL;
+	}
+
+	ret = cdev_read(cdev, to, size, 0, 0);
+	if (ret != size) {
+		printf("failed to read from nand\n");
+		return NULL;
+	}
+
+	return to;
+}
+
+void *omap_xload_boot_mmc(void)
+{
+	int ret;
+	void *buf;
+	int len;
+
+	ret = mount("disk0.0", "fat", "/");
+	if (ret) {
+		printf("mounting sd card failed with %d\n", ret);
+		return NULL;
+	}
+
+	buf = read_file("/barebox.bin", &len);
+	if (!buf) {
+		printf("could not read barebox.bin from sd card\n");
+		return NULL;
+	}
+
+	return buf;
+}