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authorSteffen Trumtrar <s.trumtrar@pengutronix.de>2013-03-26 10:11:25 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2013-03-27 09:23:49 +0100
commit26121ef51d4d52482cb98c29ba3f0a337aa1a8c5 (patch)
tree228cfe05eac7a4afc1cf0a6ab99266a755807f75
parent097513b8f82404f0e522b2f358195d75f13aa5a5 (diff)
downloadbarebox-26121ef51d4d52482cb98c29ba3f0a337aa1a8c5.tar.gz
barebox-26121ef51d4d52482cb98c29ba3f0a337aa1a8c5.tar.xz
ARM: zynq: add zynq fsbl checksum script
The bootrom only reads an image if the correct checksum is present in the header. The calculation is pretty simple: sum over all words from 0x20 to 0x44 Two of this words are the image length. That is why the checksum can not be calculated until barebox_image_size is known. The easiest solution is a program that has to be run after make. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r--.gitignore1
-rw-r--r--arch/arm/Makefile8
-rw-r--r--scripts/.gitignore1
-rw-r--r--scripts/Makefile1
-rw-r--r--scripts/zynq_mkimage.c86
5 files changed, 97 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore
index 064753d211..d1971967f6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,6 +36,7 @@ barebox.netx
barebox.s5p
barebox.spi
barebox.ubl
+barebox.zynq
barebox.uimage
barebox.map
barebox-flash-image
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 3e48a68409..2a59bfec17 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -249,6 +249,14 @@ KBUILD_TARGET := barebox.spi
KBUILD_IMAGE := barebox.spi
endif
+barebox.zynq: $(KBUILD_BINARY)
+ $(Q)scripts/zynq_mkimage $< $@
+
+ifeq ($(machine-y),zynq)
+KBUILD_TARGET := barebox.zynq
+KBUILD_IMAGE := barebox.zynq
+endif
+
pbl := arch/arm/pbl
zbarebox.S zbarebox.bin zbarebox: barebox.bin
$(Q)$(MAKE) $(build)=$(pbl) $(pbl)/$@
diff --git a/scripts/.gitignore b/scripts/.gitignore
index 1ca66030c1..bff805ddf8 100644
--- a/scripts/.gitignore
+++ b/scripts/.gitignore
@@ -7,3 +7,4 @@ mkimage
mkublheader
omap_signGP
omap4_usbboot
+zynq_mkimage
diff --git a/scripts/Makefile b/scripts/Makefile
index 08b325cb5d..fd526e5491 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -12,6 +12,7 @@ hostprogs-$(CONFIG_ARCH_NETX) += gen_netx_image
hostprogs-$(CONFIG_ARCH_OMAP) += omap_signGP mk-am35xx-spi-image
hostprogs-$(CONFIG_ARCH_S5PCxx) += s5p_cksum
hostprogs-$(CONFIG_ARCH_DAVINCI) += mkublheader
+hostprogs-$(CONFIG_ARCH_ZYNQ) += zynq_mkimage
HOSTLOADLIBES_omap4_usbboot = -lpthread
omap4_usbboot-objs := usb_linux.o omap4_usbboot.o
diff --git a/scripts/zynq_mkimage.c b/scripts/zynq_mkimage.c
new file mode 100644
index 0000000000..a096b834d1
--- /dev/null
+++ b/scripts/zynq_mkimage.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2013 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 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.
+ */
+
+#include <endian.h>
+#include <errno.h>
+#include <malloc.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+static void usage(char *name)
+{
+ printf("Usage: %s barebox-flash-image <outfile>\n", name);
+}
+
+int main(int argc, char *argv[])
+{
+ FILE *ifile, *ofile;
+ unsigned int *buf;
+ const char *infile;
+ const char *outfile;
+ struct stat st;
+ unsigned int i;
+ unsigned long sum = 0;
+
+ if (argc != 3) {
+ usage(argv[0]);
+ exit(1);
+ }
+
+ infile = argv[1];
+ outfile = argv[2];
+
+ if (stat(infile, &st) == -1) {
+ perror("stat");
+ exit(EXIT_FAILURE);
+ }
+
+ buf = malloc(st.st_size);
+ if (!buf) {
+ fprintf(stderr, "Unable to allocate buffer\n");
+ return -1;
+ }
+ ifile = fopen(infile, "rb");
+ if (!ifile) {
+ fprintf(stderr, "Cannot open %s for reading\n",
+ infile);
+ free(buf);
+ exit(EXIT_FAILURE);
+ }
+ ofile = fopen(outfile, "wb");
+ if (!ofile) {
+ fprintf(stderr, "Cannot open %s for writing\n",
+ outfile);
+ fclose(ifile);
+ free(buf);
+ exit(EXIT_FAILURE);
+ }
+
+ fread(buf, 4, st.st_size, ifile);
+
+ for (i = 0x8; i < 0x12; i++)
+ sum += htole32(buf[i]);
+
+ sum = ~sum;
+ buf[i] = sum;
+
+ fwrite(buf, st.st_size / 4, 4, ofile);
+
+ fclose(ofile);
+ fclose(ifile);
+ free(buf);
+
+ return 0;
+}