ARM Samsung: add simple NAND barebox update handler

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 85 insertions, 0 deletions

diff --git a/arch/arm/mach-samsung/bbu-nand-s3c24x0.c b/arch/arm/mach-samsung/bbu-nand-s3c24x0.c
new file mode 100644
index 0000000000..0d25abfeb7
--- /dev/null
+++ b/arch/arm/mach-samsung/bbu-nand-s3c24x0.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2014 Michael Olbrich, Pengutronix
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation.
+ *
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <bbu.h>
+#include <fs.h>
+#include <fcntl.h>
+
+static int nand_update(struct bbu_handler *handler, struct bbu_data *data)
+{
+	int fd, ret;
+
+	if (file_detect_type(data->image, data->len) != filetype_arm_barebox &&
+			!bbu_force(data, "Not an ARM barebox image"))
+		return -EINVAL;
+
+	ret = bbu_confirm(data);
+	if (ret)
+		return ret;
+
+	fd = open(data->devicefile, O_WRONLY);
+	if (fd < 0)
+		return fd;
+
+	debug("%s: eraseing %s from 0 to 0x%08x\n", __func__,
+			data->devicefile, data->len);
+	ret = erase(fd, data->len, 0);
+	if (ret) {
+		printf("erasing %s failed with %s\n", data->devicefile,
+				strerror(-ret));
+		goto err_close;
+	}
+
+	ret = write(fd, data->image, data->len);
+	if (ret < 0) {
+		printf("writing update to %s failed with %s\n", data->devicefile,
+				strerror(-ret));
+		goto err_close;
+	}
+
+	ret = 0;
+
+err_close:
+	close(fd);
+
+	return ret;
+}
+
+/*
+ * Register a s3c24x0 update handler for NAND
+ */
+int s3c24x0_bbu_nand_register_handler(void)
+{
+	struct bbu_handler *handler;
+	int ret;
+
+	handler = xzalloc(sizeof(*handler));
+	handler->devicefile = "/dev/nand0.barebox";
+	handler->name = "nand";
+	handler->handler = nand_update;
+	handler->flags = BBU_HANDLER_FLAG_DEFAULT;
+
+	ret = bbu_register_handler(handler);
+	if (ret)
+		free(handler);
+
+	return ret;
+}