[PATCH] scripts/mkublheader: add program to produce an UBL image header

[Jan Luebbe]

This image header is used for booting from SPI using the TI User
Boot Loader (UBL).

Signed-off-by: Jan Luebbe <jlu at pengutronix.de>
---
 .gitignore            |    1 +
 arch/arm/Makefile     |    9 +++++
 scripts/.gitignore    |    5 ++-
 scripts/Makefile      |    1 +
 scripts/mkublheader.c |   99 +++++++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 113 insertions(+), 2 deletions(-)
 create mode 100644 scripts/mkublheader.c

diff --git a/.gitignore b/.gitignore
index df0ed2c..c75b9ce 100644
--- a/.gitignore
+++ b/.gitignore
@@ -34,6 +34,7 @@ barebox.bin
 barebox.srec
 barebox.netx
 barebox.s5p
+barebox.ubl
 barebox.map
 System.map
 Module.symvers
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index bd684dc..53fbd0c 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -183,6 +183,15 @@ ifeq ($(CONFIG_OMAP_BUILD_IFT),y)
 KBUILD_IMAGE := MLO
 endif
 
+barebox.ubl: barebox.bin
+	@echo "  UBL    " $@
+	$(Q)scripts/mkublheader barebox.bin > barebox.ubl
+	$(Q)cat barebox.bin >> barebox.ubl
+
+ifeq ($(CONFIG_ARCH_DAVINCI),y)
+KBUILD_IMAGE := barebox.ubl
+endif
+
 all: $(KBUILD_IMAGE)
 
 archprepare: maketools
diff --git a/scripts/.gitignore b/scripts/.gitignore
index 11fd2df..6e63f85 100644
--- a/scripts/.gitignore
+++ b/scripts/.gitignore
@@ -1,6 +1,7 @@
 bareboxenv
 bin2c
-mkimage
-kallsyms
 gen_netx_image
+kallsyms
+mkimage
+mkublheader
 omap_signGP
diff --git a/scripts/Makefile b/scripts/Makefile
index 784d205..7ca5e29 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -11,6 +11,7 @@ hostprogs-y                      += bareboxenv
 hostprogs-$(CONFIG_ARCH_NETX)    += gen_netx_image
 hostprogs-$(CONFIG_ARCH_OMAP)    += omap_signGP
 hostprogs-$(CONFIG_ARCH_S5PCxx)  += s5p_cksum
+hostprogs-$(CONFIG_ARCH_DAVINCI) += mkublheader
 
 always		:= $(hostprogs-y) $(hostprogs-m)
 
diff --git a/scripts/mkublheader.c b/scripts/mkublheader.c
new file mode 100644
index 0000000..b61630a
--- /dev/null
+++ b/scripts/mkublheader.c
@@ -0,0 +1,99 @@
+/*
+ * mkublheader.c - produce the header needed to load barebox on OMAP-L138
+ *
+ * Copyright (C) 2012 Jan Luebbe <j.luebbe at 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.
+ *
+ * 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>
+
+#define MAGICNUM 0xa1aced00
+
+struct ubl_header
+{
+  uint32_t magicNum; /* Expected magic number */
+  uint32_t epAddr;   /* Entry point of the user application */
+  uint32_t imgSize;  /* Number of bytes of the application image */
+  uint32_t imgAddr;  /* SPI memory offset where application image is located */
+  uint32_t ldAddr;   /* Address where image is copied to */
+};
+
+void usage(char *prgname)
+{
+	printf( "Usage : %s [OPTION] FILE > HEADER\n"
+		"\n"
+		"options:\n"
+		"  -a <address> image flash address\n"
+		"  -e <address> entry point memory address\n"
+		"  -l <address> load memory address\n",
+		prgname);
+}
+
+int main(int argc, char *argv[])
+{
+	struct stat sb;
+	struct ubl_header uh;
+	int opt;
+	uint32_t imgAddr = 0x00040000 + sizeof(uh);
+	uint32_t epAddr = 0xc1080000, ldAddr = 0xc1080000;
+
+	while((opt = getopt(argc, argv, "ael:")) != -1) {
+		switch (opt) {
+		case 'a':
+			imgAddr = strtoul(optarg, NULL, 0);
+			break;
+		case 'e':
+			epAddr = strtoul(optarg, NULL, 0);
+			break;
+		case 'l':
+			ldAddr = strtoul(optarg, NULL, 0);
+			break;
+		}
+	}
+
+	if (optind >= argc) {
+		usage(argv[0]);
+		exit(1);
+	}
+
+	if (stat(argv[optind], &sb) == -1) {
+		perror("stat");
+		exit(EXIT_FAILURE);
+	}
+
+	uh.magicNum = htole32(MAGICNUM);
+	uh.epAddr = htole32(epAddr);
+	uh.imgSize = htole32((uint32_t)sb.st_size);
+	uh.imgAddr = htole32(imgAddr);
+	uh.ldAddr = htole32(ldAddr);
+
+	fwrite(&uh, sizeof(uh), 1, stdout);
+
+	exit(EXIT_SUCCESS);
+}
-- 
1.7.10