[PATCH 3/5] ARM: socfpga: add bbu handler for spi nor

[Steffen Trumtrar <s.trumtrar@pengutronix.de>]

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
---
 arch/arm/mach-socfpga/Kconfig               |  8 +++
 arch/arm/mach-socfpga/Makefile              |  1 +
 arch/arm/mach-socfpga/include/mach/bbu.h    | 15 +++++
 arch/arm/mach-socfpga/socfpga_bbu_spi_nor.c | 86 +++++++++++++++++++++++++++++
 4 files changed, 110 insertions(+)
 create mode 100644 arch/arm/mach-socfpga/include/mach/bbu.h
 create mode 100644 arch/arm/mach-socfpga/socfpga_bbu_spi_nor.c

diff --git a/arch/arm/mach-socfpga/Kconfig b/arch/arm/mach-socfpga/Kconfig
index 90b3533b1ffb..a85749b7f829 100644
--- a/arch/arm/mach-socfpga/Kconfig
+++ b/arch/arm/mach-socfpga/Kconfig
@@ -20,4 +20,12 @@ config MACH_SOCFPGA_TERASIC_SOCKIT
 	select HAVE_DEFAULT_ENVIRONMENT_NEW
 	bool "Terasic SoCKit"
 
+config BAREBOX_UPDATE_SOCFPGA_SPI_NOR
+	prompt "barebox update SPI NOR XLOAD handler"
+	bool
+	depends on BAREBOX_UPDATE
+	depends on SPI_CADENCE_QUADSPI
+	help
+	  Say Y for barebox update SPI NOR XLOAD handler.
+
 endif
diff --git a/arch/arm/mach-socfpga/Makefile b/arch/arm/mach-socfpga/Makefile
index b81d57da26fd..12c5252d1a6e 100644
--- a/arch/arm/mach-socfpga/Makefile
+++ b/arch/arm/mach-socfpga/Makefile
@@ -3,3 +3,4 @@ pbl-y += init.o freeze-controller.o scan-manager.o system-manager.o
 pbl-y += clock-manager.o
 obj-$(CONFIG_ARCH_SOCFPGA_XLOAD) += xload.o
 obj-$(CONFIG_ARCH_SOCFPGA_FPGA) += fpga.o
+obj-$(CONFIG_BAREBOX_UPDATE_SOCFPGA_SPI_NOR) += socfpga_bbu_spi_nor.o
diff --git a/arch/arm/mach-socfpga/include/mach/bbu.h b/arch/arm/mach-socfpga/include/mach/bbu.h
new file mode 100644
index 000000000000..e4846d36bc5d
--- /dev/null
+++ b/arch/arm/mach-socfpga/include/mach/bbu.h
@@ -0,0 +1,15 @@
+#ifndef __MACH_BBU_H
+#define __MACH_BBU_H
+
+#include <bbu.h>
+
+#ifdef CONFIG_BAREBOX_UPDATE_SOCFPGA_SPI_NOR
+int socfpga_bbu_spi_nor_register_handler(const char *name, char *devicefile);
+#else
+static inline int socfpga_bbu_spi_nor_register_handler(const char *name, char *devicefile)
+{
+	return 0;
+}
+#endif
+
+#endif
diff --git a/arch/arm/mach-socfpga/socfpga_bbu_spi_nor.c b/arch/arm/mach-socfpga/socfpga_bbu_spi_nor.c
new file mode 100644
index 000000000000..cf44bc81c60b
--- /dev/null
+++ b/arch/arm/mach-socfpga/socfpga_bbu_spi_nor.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2015 Pengutronix, Steffen Trumtrar <s.trumtrar@pengutronix.de>
+ *
+ * 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>
+#include <linux/stat.h>
+
+static int spi_nor_handler(struct bbu_handler *handler,
+			   struct bbu_data *data)
+{
+	int fd, ret;
+	int *header;
+
+	if (file_detect_type(data->image, data->len) != filetype_arm_barebox) {
+		if (!bbu_force(data, "Not an ARM barebox image"))
+			return -EINVAL;
+	}
+
+	header = data->image;
+
+	if (!header[0x40] == 0x31305341) {
+		if (!bbu_force(data, "Not a valid SOCFPGA image"))
+			return -EINVAL;
+	}
+
+	ret = bbu_confirm(data);
+	if (ret)
+		return ret;
+
+	fd = open(data->devicefile, O_RDWR | O_CREAT);
+	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)
+		goto err_close;
+
+	ret = 0;
+
+err_close:
+	close(fd);
+
+	return ret;
+}
+
+/*
+ * Register update handler for SPI NOR
+ */
+int socfpga_bbu_spi_nor_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_handler;
+
+	ret = bbu_register_handler(handler);
+
+	if (ret)
+		free(handler);
+
+	return ret;
+}
-- 
2.1.4


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