summaryrefslogtreecommitdiffstats
path: root/rbutil/mkimxboot/dualboot
diff options
context:
space:
mode:
authorAmaury Pouly <pamaury@rockbox.org>2011-11-06 19:44:03 +0000
committerAmaury Pouly <pamaury@rockbox.org>2011-11-06 19:44:03 +0000
commit303c486f4f7d557c35e7b6543fa9827fb94846b9 (patch)
tree3c735d8255359f1d3c4525185300035c4f029efc /rbutil/mkimxboot/dualboot
parentcd832bd0f5d19b066dc859df9355243de9a95424 (diff)
downloadrockbox-303c486f4f7d557c35e7b6543fa9827fb94846b9.tar.gz
rockbox-303c486f4f7d557c35e7b6543fa9827fb94846b9.zip
Introduce mkimxboot to build bootloader images for the i.MX (only the fuze+ currently). Still not integrated in rbutil
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30920 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'rbutil/mkimxboot/dualboot')
-rw-r--r--rbutil/mkimxboot/dualboot/Makefile33
-rw-r--r--rbutil/mkimxboot/dualboot/bin2c.c140
-rw-r--r--rbutil/mkimxboot/dualboot/dualboot.S39
-rw-r--r--rbutil/mkimxboot/dualboot/dualboot.lds16
4 files changed, 228 insertions, 0 deletions
diff --git a/rbutil/mkimxboot/dualboot/Makefile b/rbutil/mkimxboot/dualboot/Makefile
new file mode 100644
index 0000000000..fa5f341b6d
--- /dev/null
+++ b/rbutil/mkimxboot/dualboot/Makefile
@@ -0,0 +1,33 @@
+CC=gcc
+CROSS_PREFIX=arm-elf-eabi
+# Edit the following variables (plus copy/paste another set of rules) when
+# adding a new target. mkimxboot.c also needs to be edited to refer to these
+# new images.
+
+BOOTOBJS = dualboot_fuzeplus.o
+BOOTBINS = dualboot_fuzeplus.arm-bin
+
+all: ../dualboot.h ../dualboot.c
+
+# Dualboot bootloaders
+
+dualboot_fuzeplus.o: dualboot.S
+ $(CROSS_PREFIX)-$(CC) -mcpu=arm926ej-s -DSANSA_FUZEPLUS -c -o dualboot_fuzeplus.o dualboot.S
+
+# Rules for the ARM code embedded in mkamsboot - assemble, link, then extract
+# the binary code and finally convert to .h for building in mkamsboot
+
+%.arm-elf: %.o
+ $(CROSS_PREFIX)-ld -Tdualboot.lds -o $@ $<
+
+%.arm-bin: %.arm-elf
+ $(CROSS_PREFIX)-objcopy -O binary $< $@
+
+../dualboot.c ../dualboot.h: $(BOOTBINS) bin2c
+ ./bin2c ../dualboot $(BOOTBINS)
+
+bin2c: bin2c.c
+ $(CC) -o bin2c bin2c.c
+
+clean:
+ rm -f *~ bin2c $(BOOTBINS) $(BOOTOBJS)
diff --git a/rbutil/mkimxboot/dualboot/bin2c.c b/rbutil/mkimxboot/dualboot/bin2c.c
new file mode 100644
index 0000000000..b02af88a4d
--- /dev/null
+++ b/rbutil/mkimxboot/dualboot/bin2c.c
@@ -0,0 +1,140 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2007 Dave Chapman
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <libgen.h>
+
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+static off_t filesize(int fd)
+{
+ struct stat buf;
+
+ fstat(fd,&buf);
+ return buf.st_size;
+}
+
+static void write_cfile(const unsigned char* buf, off_t len, FILE* fp, const char *name)
+{
+ int i;
+
+ fprintf(fp,"unsigned char %s[%ld] = {",name,len);
+
+ for (i=0;i<len;i++) {
+ if ((i % 16) == 0) {
+ fprintf(fp,"\n ");
+ }
+ if (i == (len-1)) {
+ fprintf(fp,"0x%02x",buf[i]);
+ } else if ((i % 16) == 15) {
+ fprintf(fp,"0x%02x,",buf[i]);
+ } else {
+ fprintf(fp,"0x%02x, ",buf[i]);
+ }
+ }
+ fprintf(fp,"\n};\n");
+}
+
+int main (int argc, char* argv[])
+{
+ char* cname;
+ int i;
+ FILE *cfile, *hfile;
+ char cfilename[256], hfilename[256];
+
+ if (argc < 3) {
+ fprintf(stderr,"Usage: bin2c cname file1 [file2 [file3 ...]]\n");
+ return 1;
+ }
+
+ cname=argv[1];
+
+ snprintf(cfilename,256,"%s.c",cname);
+ cfile = fopen(cfilename,"w+");
+ if (cfile == NULL) {
+ fprintf(stderr,"Couldn't open %s\n",cfilename);
+ return 2;
+ }
+
+ snprintf(hfilename,256,"%s.h",cname);
+ hfile = fopen(hfilename,"w+");
+ if (hfile == NULL) {
+ fprintf(stderr,"Couldn't open %s\n",hfilename);
+ fclose(cfile);
+ return 3;
+ }
+
+ fprintf(cfile,"/* Generated by bin2c */\n\n");
+ fprintf(cfile,"#include \"%s\"\n\n", basename(hfilename));
+ fprintf(hfile,"/* Generated by bin2c */\n\n");
+
+ for(i=0; i < argc - 2; i++) {
+ unsigned char* buf;
+ off_t len;
+ off_t orig_len;
+ char *ext;
+ char *array = argv[2+i];
+
+ int fd = open(array,O_RDONLY|O_BINARY);
+ if (fd < 0) {
+ fprintf(stderr,"Can not open %s\n",argv[2+i]);
+ fclose(cfile);
+ fclose(hfile);
+ return 4;
+ }
+
+ orig_len = filesize(fd);
+ /* pad to 32bit */
+ len = (orig_len + 3) & ~3;
+
+ buf = malloc(len);
+ if (read(fd,buf,orig_len) < orig_len) {
+ fprintf(stderr,"Short read, aborting\n");
+ return 5;
+ }
+
+ /* pad to 32bit with zeros */
+ if (len > orig_len)
+ memset(buf+orig_len, 0, len-orig_len);
+
+ /* remove file extension */
+ ext = strchr (array, '.');
+ if (ext != NULL)
+ *ext = '\0';
+ write_cfile (buf, len, cfile, array);
+ fprintf(hfile,"extern unsigned char %s[%ld];\n",array,len);
+
+ close(fd);
+ }
+
+ fclose(cfile);
+ fclose(hfile);
+
+ return 0;
+}
diff --git a/rbutil/mkimxboot/dualboot/dualboot.S b/rbutil/mkimxboot/dualboot/dualboot.S
new file mode 100644
index 0000000000..8302829a81
--- /dev/null
+++ b/rbutil/mkimxboot/dualboot/dualboot.S
@@ -0,0 +1,39 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2011 by Amaury Pouly
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+.text
+.global start
+@ int start(uint32_t arg, uint32_t *result_id)
+start:
+#if defined(SANSA_FUZEPLUS)
+ /* If volume down key is hold, return so that the OF can boot */
+ ldr r2, =0x80018610 @ HW_PINCTRL_DIN1
+ ldr r2, [r2]
+ tst r2, #0x40000000 @ bit 30, active low
+ moveq r0, #0 @ return 0, continue boot
+ bxeq lr
+ /* otherwise jump to section given as argument */
+ str r0, [r1]
+ mov r0, #1
+ bx lr
+#else
+#error No target defined !
+#endif
diff --git a/rbutil/mkimxboot/dualboot/dualboot.lds b/rbutil/mkimxboot/dualboot/dualboot.lds
new file mode 100644
index 0000000000..caaff1a41d
--- /dev/null
+++ b/rbutil/mkimxboot/dualboot/dualboot.lds
@@ -0,0 +1,16 @@
+ENTRY(start)
+OUTPUT_FORMAT(elf32-littlearm)
+OUTPUT_ARCH(arm)
+
+MEMORY
+{
+ OCRAM : ORIGIN = 0, LENGTH = 0x8000
+}
+
+SECTIONS
+{
+ .text 0 :
+ {
+ *(.text*)
+ } > OCRAM
+}