From: shravan <shravan.k@xxxxxxxxx>
-Added mlo spi NOR copy handler
-This handler will convert the MLO to big endian
-Tested with pcm051 board
Signed-off-by: shravan <shravan.k@xxxxxxxxx>
---
changes since v2:
-file and function names are rename from omap_ to am33xx_
arch/arm/mach-omap/Kconfig | 8 +++
arch/arm/mach-omap/Makefile | 1 +
arch/arm/mach-omap/am33xx_bbu_spi_mlo.c | 88 +++++++++++++++++++++++++++++++
arch/arm/mach-omap/include/mach/bbu.h | 15 ++++++
4 files changed, 112 insertions(+)
create mode 100644 arch/arm/mach-omap/am33xx_bbu_spi_mlo.c
create mode 100644 arch/arm/mach-omap/include/mach/bbu.h
diff --git a/arch/arm/mach-omap/Kconfig b/arch/arm/mach-omap/Kconfig
index 3ec18f0..b95046b 100644
--- a/arch/arm/mach-omap/Kconfig
+++ b/arch/arm/mach-omap/Kconfig
@@ -90,6 +90,14 @@ config OMAP_BUILD_SPI
Say Y here if you want to build an barebox.spi image as used
on the AM35xx chips when booting from SPI NOR flash.
+config BAREBOX_UPDATE_AM33XX_SPI_NOR_MLO
+ prompt "barebox update SPI NOR MLO handler"
+ bool
+ depends on BAREBOX_UPDATE
+ help
+ Say Y for barebox update SPI NOR MLO handler.
+ AM35xx, AM33xx chips use big endian MLO for SPI NOR flash.
+
config ARCH_TEXT_BASE
hex
default 0x80e80000 if MACH_OMAP343xSDP
diff --git a/arch/arm/mach-omap/Makefile b/arch/arm/mach-omap/Makefile
index d42de48..89944a9 100644
--- a/arch/arm/mach-omap/Makefile
+++ b/arch/arm/mach-omap/Makefile
@@ -32,3 +32,4 @@ obj-$(CONFIG_MFD_TWL6030) += omap4_twl6030_mmc.o
obj-$(CONFIG_OMAP4_USBBOOT) += omap4_rom_usb.o
obj-$(CONFIG_CMD_BOOT_ORDER) += boot_order.o
obj-y += gpio.o
+obj-$(CONFIG_BAREBOX_UPDATE_AM33XX_SPI_NOR_MLO) += am33xx_bbu_spi_mlo.o
diff --git a/arch/arm/mach-omap/am33xx_bbu_spi_mlo.c b/arch/arm/mach-omap/am33xx_bbu_spi_mlo.c
new file mode 100644
index 0000000..ff9f8a6
--- /dev/null
+++ b/arch/arm/mach-omap/am33xx_bbu_spi_mlo.c
@@ -0,0 +1,88 @@
+/*
+ * am33xx_bbu_spi_mlo.c - am35xx and am33xx specific MLO
+ * update handler for SPI NOR flash
+ *
+ * Copyright (c) 2013 Sharavn kumar <shravan.k@xxxxxxxxx>, Phytec
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <bbu.h>
+#include <fs.h>
+#include <fcntl.h>
+
+/*
+ * AM35xx, AM33xx chips use big endian MLO for SPI NOR flash
+ * This handler converting MLO to big endian and write to SPI NOR
+ */
+static int spi_nor_mlo_handler(struct bbu_handler *handler,
+ struct bbu_data *data)
+{
+ int dstfd = 0;
+ int ret = 0;
+ uint32_t readbuf;
+ int size = data->len;
+ void *image = data->image;
+
+ dstfd = open(data->devicefile, O_WRONLY);
+ if (dstfd < 0) {
+ printf("could not open %s: %s", data->devicefile, errno_str());
+ ret = dstfd;
+ goto out;
+ }
+
+ ret = erase(dstfd, ~0, 0);
+ if (ret < 0) {
+ printf("could not erase %s: %s", data->devicefile, errno_str());
+ goto out1;
+ }
+
+ for (; size >= 0; size -= 4) {
+ memcpy((char *)&readbuf, image, 4);
+
+ readbuf = cpu_to_be32(readbuf);
+ ret = write(dstfd, &readbuf, 4);
+ if (ret < 0) {
+ perror("write");
+ goto out1;
+ }
+
+ image = image + 4;
+ }
+
+ ret = 0;
+out1:
+ close(dstfd);
+out:
+ return ret;
+}
+
+/*
+ * Register a am33xx MLO update handler for SPI NOR
+ */
+int am33xx_bbu_spi_nor_mlo_register_handler(const char *name, char *devicefile)
+{
+ struct bbu_handler *handler;
+ int ret;
+
+ handler = xzalloc(sizeof(*handler));
+ handler->devicefile = devicefile;
+ handler->name = name;
+ handler->handler = spi_nor_mlo_handler;
+
+ ret = bbu_register_handler(handler);
+
+ if (ret)
+ free(handler);
+
+ return ret;
+}
diff --git a/arch/arm/mach-omap/include/mach/bbu.h b/arch/arm/mach-omap/include/mach/bbu.h
new file mode 100644
index 0000000..6d4b70f
--- /dev/null
+++ b/arch/arm/mach-omap/include/mach/bbu.h
@@ -0,0 +1,15 @@
+#ifndef __MACH_BBU_H
+#define __MACH_BBU_H
+
+#include <bbu.h>
+
+#ifdef CONFIG_BAREBOX_UPDATE_AM33XX_SPI_NOR_MLO
+int am33xx_bbu_spi_nor_mlo_register_handler(const char *name, char *devicefile);
+#else
+int am33xx_bbu_spi_nor_mlo_register_handler(const char *name, char *devicefile)
+{
+ return 0;
+}
+#endif
+
+#endif
--
1.7.9.5
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