On 16:20 Mon 20 Aug , Jan Luebbe wrote:
> Booting from SPI on an AM35xx (and possibly other TI SOCs) requires
> a special format:
>
> - 32 bit image size in big-endian
> - 32 bit load address in big-endian
> - binary image converted from little- to big-endian
>
> The mk-am35xx-spi-image tool converts barebox.bin to
> this format.
>
> Signed-off-by: Jan Luebbe <jlu@xxxxxxxxxxxxxx>
> ---
> arch/arm/Makefile | 8 +++
> arch/arm/mach-omap/Kconfig | 7 +++
> scripts/.gitignore | 5 +-
> scripts/Makefile | 2 +-
> scripts/mk-am35xx-spi-image.c | 126 +++++++++++++++++++++++++++++++++++++++++
> 5 files changed, 145 insertions(+), 3 deletions(-)
> create mode 100644 scripts/mk-am35xx-spi-image.c
>
> diff --git a/arch/arm/Makefile b/arch/arm/Makefile
> index 1225df7..c2eb598 100644
> --- a/arch/arm/Makefile
> +++ b/arch/arm/Makefile
> @@ -186,6 +186,14 @@ endif
>
> all: $(KBUILD_IMAGE)
>
> +barebox.spi: barebox.bin
> + @echo " SPI " $@
> + $(Q)scripts/mk-am35xx-spi-image barebox.bin > barebox.spi
you need to use cmd_ style and be in sync wtih the next branch
> +
> +ifeq ($(CONFIG_OMAP_BUILD_SPI),y)
> +all: barebox.spi
> +endif
> +
> archprepare: maketools
> maketools:
> $(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
> diff --git a/arch/arm/mach-omap/Kconfig b/arch/arm/mach-omap/Kconfig
> index 386c484..aa9ab8c 100644
> --- a/arch/arm/mach-omap/Kconfig
> +++ b/arch/arm/mach-omap/Kconfig
> @@ -91,6 +91,13 @@ config OMAP_BUILD_IFT
> prompt "build ift binary"
> bool
>
> +config OMAP_BUILD_SPI
> + prompt "build SPI binary"
> + bool
> + help
> + Say Y here if you want to build an barebox.spi image as used
> + on the AM35xx chips when booting form SPI NOR flash.
> +
> config ARCH_TEXT_BASE
> hex
> default 0x80e80000 if MACH_OMAP343xSDP
> diff --git a/scripts/.gitignore b/scripts/.gitignore
> index 11fd2df..8772205 100644
> --- a/scripts/.gitignore
> +++ b/scripts/.gitignore
> @@ -1,6 +1,7 @@
> bareboxenv
> bin2c
> -mkimage
> -kallsyms
> gen_netx_image
> +kallsyms
> +mk-am35xx-spi-image
> +mkimage
> omap_signGP
> diff --git a/scripts/Makefile b/scripts/Makefile
> index 784d205..9b6b628 100644
> --- a/scripts/Makefile
> +++ b/scripts/Makefile
> @@ -9,7 +9,7 @@ hostprogs-y += bin2c
> hostprogs-y += mkimage
> hostprogs-y += bareboxenv
> hostprogs-$(CONFIG_ARCH_NETX) += gen_netx_image
> -hostprogs-$(CONFIG_ARCH_OMAP) += omap_signGP
> +hostprogs-$(CONFIG_ARCH_OMAP) += omap_signGP mk-am35xx-spi-image
> hostprogs-$(CONFIG_ARCH_S5PCxx) += s5p_cksum
>
> always := $(hostprogs-y) $(hostprogs-m)
> diff --git a/scripts/mk-am35xx-spi-image.c b/scripts/mk-am35xx-spi-image.c
> new file mode 100644
> index 0000000..133f2b7
> --- /dev/null
> +++ b/scripts/mk-am35xx-spi-image.c
> @@ -0,0 +1,126 @@
> +/*
> + * mkublheader.c - produce the header needed to load barebox on OMAP-L138
> + *
> + * Copyright (C) 2012 Jan Luebbe <j.luebbe@xxxxxxxxxxxxxx>
> + *
> + * 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, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + */
> +
> +#define _BSD_SOURCE
> +
> +#include <stdio.h>
> +#include <sys/types.h>
> +#include <sys/stat.h>
> +#include <fcntl.h>
> +#include <unistd.h>
> +#include <stdint.h>
> +#include <limits.h>
> +#include <errno.h>
> +#include <stdlib.h>
> +#include <string.h>
> +#include <getopt.h>
> +#include <endian.h>
> +
> +void usage(char *prgname)
> +{
> + printf("usage: %s [OPTION] FILE > IMAGE\n"
> + "\n"
> + "options:\n"
> + " -a <address> memory address for the loaded image in SRAM\n",
> + prgname);
> +}
> +
> +int main(int argc, char *argv[])
> +{
> + FILE *input;
> + int opt;
> + off_t pos;
> + size_t size;
> + uint32_t addr = 0x40200000;
> + uint32_t temp;
> +
> + while((opt = getopt(argc, argv, "a:")) != -1) {
> + switch (opt) {
> + case 'a':
> + addr = strtoul(optarg, NULL, 0);
> + break;
> + }
> + }
> +
> + if (optind >= argc) {
> + usage(argv[0]);
> + exit(1);
> + }
> +
> + input = fopen(argv[optind], "r");
> + if (input == NULL) {
> + perror("fopen");
> + exit(EXIT_FAILURE);
> + }
> +
> + if (fseeko(input, 0, SEEK_END) == -1) {
> + perror("fseeko");
> + exit(EXIT_FAILURE);
> + }
> +
> + pos = ftello(input);
> + if (pos == -1) {
> + perror("ftello");
> + exit(EXIT_FAILURE);
> + }
> + if (pos % 4) {
> + printf("error: image size must be a multiple of 4 bytes\n");
> + exit(EXIT_FAILURE);
> + }
> + if (pos > 0x100000) {
> + printf("error: image should be smaller than 1 MiB\n");
> + exit(EXIT_FAILURE);
> + }
> +
> + if (fseeko(input, 0, SEEK_SET) == -1) {
> + perror("fseeko");
> + exit(EXIT_FAILURE);
> + }
> +
> + /* image size */
> + temp = htobe32((uint32_t)pos);
> + fwrite(&temp, sizeof(uint32_t), 1, stdout);
> +
> + /* memory address */
> + temp = htobe32(addr);
> + fwrite(&temp, sizeof(uint32_t), 1, stdout);
why this??
you just need to create a PRE_IMAGE
so no need ot this
Best Regards,
J.
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