From: shravan <shrava...@phytec.in> -Added mlo spi NOR copy handler -This handler will convert the MLO to big endian -Tested with pcm051 board
Signed-off-by: shravan <shrava...@phytec.in> --- 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 <shrava...@phytec.in>, 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 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox