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

12 files changed, 1219 insertions, 0 deletions

diff --git a/rbutil/mkimxboot/Makefile b/rbutil/mkimxboot/Makefile
new file mode 100644
index 0000000000..08cd887fce
--- /dev/null
+++ b/rbutil/mkimxboot/Makefile
@@ -0,0 +1,112 @@
+#             __________               __   ___.
+#   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+#   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+#   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+#   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+#                     \/            \/     \/    \/            \/
+
+#change for releases
+ifndef APPVERSION
+APPVERSION=$(shell ../../tools/version.sh ../../)
+endif
+TARGET_DIR ?= $(shell pwd)/
+# We use the SB code available in the Rockbox utils/sbtools directory
+IMXTOOLS_DIR=../../utils/imxtools/
+CFLAGS=-I$(IMXTOOLS_DIR) -Wall -DVERSION=\"$(APPVERSION)\"
+
+ifndef V
+SILENT = @
+endif
+
+ifeq ($(findstring CYGWIN,$(shell uname)),CYGWIN)
+OUTPUT=mkimxboot.exe
+CFLAGS+=-mno-cygwin
+else
+ifeq ($(findstring MINGW,$(shell uname)),MINGW)
+OUTPUT=mkimxboot.exe
+else
+ifeq ($(findstring mingw,$(CC)),mingw)
+OUTPUT=mkimxboot.exe
+else
+OUTPUT=mkimxboot
+endif
+endif
+endif
+
+ifdef RBARCH
+CFLAGS += -arch $(RBARCH)
+OBJDIR = $(TARGET_DIR)build/$(RBARCH)/
+else
+OBJDIR = $(TARGET_DIR)build/
+endif
+
+CFLAGS += -std=c99
+
+all: $(OUTPUT)
+
+# inputs
+LIBIMXSOURCES=misc.c sb.c crypto.c crc.c aes128.c sha1.c
+LIBSOURCES := dualboot.c mkimxboot.c md5.c $(LIBIMXSOURCES)
+SOURCES := $(LIBSOURCES) main.c
+OBJS := $(patsubst %.c,%.o,$(addprefix $(OBJDIR),$(SOURCES)))
+LIBOBJS := $(patsubst %.c,%.o,$(addprefix $(OBJDIR),$(LIBSOURCES)))
+EXTRADEPS := 
+
+# explicit dependencies on dualboot.{c,h} and mkimxboot.h
+$(OBJDIR)mkimxboot.o: dualboot.h dualboot.c mkimxboot.c mkimxboot.h
+$(OBJDIR)main.o: dualboot.h dualboot.c main.c mkimxboot.h
+
+$(OBJDIR)%.o: %.c
+        @echo CC $<
+        $(SILENT)mkdir -p $(dir $@)
+        $(SILENT)$(CC) $(CFLAGS) -c -o $@ $<
+
+$(OBJDIR)%.o: $(IMXTOOLS_DIR)%.c
+        @echo CC $<
+        $(SILENT)mkdir -p $(dir $@)
+        $(SILENT)$(CC) $(CFLAGS) -c -o $@ $<
+
+libmkimxboot$(RBARCH).a: $(TARGET_DIR)libmkimxboot$(RBARCH).a
+
+$(TARGET_DIR)libmkimxboot$(RBARCH).a: $(LIBOBJS)
+        @echo AR $(notdir $@)
+        $(SILENT)$(AR) rucs $@ $^
+
+# building the standalone executable
+$(OUTPUT): $(OBJS) $(EXTRADEPS)
+        @echo LD $@
+        $(SILENT)$(CC) $(CFLAGS) -o $(OUTPUT) $(OBJS) $(EXTRADEPS)
+
+# some trickery to build ppc and i386 from a single call
+ifeq ($(RBARCH),)
+$(TARGET_DIR)libmkimxbooti386.a:
+        make RBARCH=i386 TARGET_DIR=$(TARGET_DIR) libmkimxbooti386.a
+
+$(TARGET_DIR)libmkimxbootppc.a:
+        make RBARCH=ppc TARGET_DIR=$(TARGET_DIR) libmkimxbootppc.a
+endif
+
+libmkimxboot-universal: $(TARGET_DIR)libmkimxbooti386.a $(TARGET_DIR)libmkimxbootppc.a
+        @echo lipo $(TARGET_DIR)libmkimxboot.a
+        $(SILENT) rm -f $(TARGET_DIR)libmkimxboot.a
+        $(SILENT)lipo -create $(TARGET_DIR)libmkimxbootppc.a $(TARGET_DIR)libmkimxbooti386.a -output $(TARGET_DIR)libmkimxboot.a
+
+clean:
+        rm -f $(OBJS) $(OUTPUT) libmkimxboot.o $(TARGET_DIR)libmkimxboot*.a mkimxboot.dmg
+        rm -rf mkimxboot-* i386 ppc $(OBJDIR)
+
+mkimxboot-i386:
+        $(MAKE) RBARCH=i386
+        mv mkimxboot mkimxboot-i386
+
+mkimxboot-ppc:
+        $(MAKE) RBARCH=ppc
+        mv mkimxboot mkimxboot-ppc
+
+mkimxboot-mac: mkimxboot-i386 mkimxboot-ppc
+        $(SILENT)lipo -create mkimxboot-ppc mkimxboot-i386 -output mkimxboot-mac
+
+mkimxboot.dmg: mkimxboot-mac
+        mkdir -p mkimxboot-dmg
+        cp -p mkimxboot-mac mkimxboot-dmg
+        hdiutil create -srcfolder mkimxboot-dmg mkimxboot.dmg
diff --git a/rbutil/mkimxboot/dualboot.c b/rbutil/mkimxboot/dualboot.c
new file mode 100644
index 0000000000..95bee11cf8
--- /dev/null
+++ b/rbutil/mkimxboot/dualboot.c
@@ -0,0 +1,9 @@
+/* Generated by bin2c */
+
+#include "dualboot.h"
+
+unsigned char dualboot_fuzeplus[36] = {
+    0x18, 0x20, 0x9f, 0xe5, 0x00, 0x20, 0x92, 0xe5, 0x01, 0x01, 0x12, 0xe3, 0x00, 0x00, 0xa0, 0x03,
+    0x1e, 0xff, 0x2f, 0x01, 0x00, 0x00, 0x81, 0xe5, 0x01, 0x00, 0xa0, 0xe3, 0x1e, 0xff, 0x2f, 0xe1,
+    0x10, 0x86, 0x01, 0x80
+};
diff --git a/rbutil/mkimxboot/dualboot.h b/rbutil/mkimxboot/dualboot.h
new file mode 100644
index 0000000000..e14f3582a8
--- /dev/null
+++ b/rbutil/mkimxboot/dualboot.h
@@ -0,0 +1,3 @@
+/* Generated by bin2c */
+
+extern unsigned char dualboot_fuzeplus[36];
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
+}
diff --git a/rbutil/mkimxboot/main.c b/rbutil/mkimxboot/main.c
new file mode 100644
index 0000000000..ec2a42380d
--- /dev/null
+++ b/rbutil/mkimxboot/main.c
@@ -0,0 +1,132 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   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.
+ *
+ ****************************************************************************/
+
+#include <getopt.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include "mkimxboot.h"
+
+static void usage(void)
+{
+    printf("Usage: elftosb [options | file]...\n");
+    printf("Options:\n");
+    printf("  -?/--help\tDisplay this message\n");
+    printf("  -o <file>\tSet output file\n");
+    printf("  -i <file>\tSet input file\n");
+    printf("  -b <file>\tSet boot file\n");
+    printf("  -d/--debug\tEnable debug output\n");
+    printf("  -t <type>\tSet type (dualboot, singleboot, recovery)\n");
+    printf("By default a dualboot image is built\n");
+    exit(1);
+}
+
+int main(int argc, char *argv[])
+{
+    char *infile = NULL;
+    char *outfile = NULL;
+    char *bootfile = NULL;
+    enum imx_output_type_t type = IMX_DUALBOOT;
+    bool debug = false;
+
+    if(argc == 1)
+        usage();
+    
+    while(1)
+    {
+        static struct option long_options[] =
+        {
+            {"help", no_argument, 0, '?'},
+            {"in-file", no_argument, 0, 'i'},
+            {"out-file", required_argument, 0, 'o'},
+            {"boot-file", required_argument, 0, 'b'},
+            {"debug", no_argument, 0, 'd'},
+            {"type", required_argument, 0, 't'},
+            {0, 0, 0, 0}
+        };
+
+        int c = getopt_long(argc, argv, "?di:o:b:t:", long_options, NULL);
+        if(c == -1)
+            break;
+        switch(c)
+        {
+            case 'd':
+                debug = true;
+                break;
+            case '?':
+                usage();
+                break;
+            case 'o':
+                outfile = optarg;
+                break;
+            case 'i':
+                infile = optarg;
+                break;
+            case 'b':
+            {
+                bootfile = optarg;
+                break;
+            }
+            case 't':
+                if(strcmp(optarg, "dualboot") == 0)
+                    type = IMX_DUALBOOT;
+                else if(strcmp(optarg, "singleboot") == 0)
+                    type = IMX_SINGLEBOOT;
+                else if(strcmp(optarg, "recovery") == 0)
+                    type = IMX_RECOVERY;
+                else
+                {
+                    printf("Invalid boot type '%s'\n", optarg);
+                    return 1;
+                }
+                break;
+            default:
+                abort();
+        }
+    }
+
+    if(!infile)
+    {
+        printf("You must specify an input file\n");
+        return 1;
+    }
+    if(!outfile)
+    {
+        printf("You must specify an output file\n");
+        return 1;
+    }
+    if(!bootfile)
+    {
+        printf("You must specify an boot file\n");
+        return 1;
+    }
+    if(optind != argc)
+    {
+        printf("Extra arguments on command line\n");
+        return 1;
+    }
+
+    struct imx_option_t opt;
+    opt.debug = debug;
+    opt.output = type;
+    enum imx_error_t err = mkimxboot(infile, bootfile, outfile, opt);
+    printf("Result: %d\n", err);
+    return 0;
+}
diff --git a/rbutil/mkimxboot/md5.c b/rbutil/mkimxboot/md5.c
new file mode 100644
index 0000000000..530d8df15a
--- /dev/null
+++ b/rbutil/mkimxboot/md5.c
@@ -0,0 +1,246 @@
+/*
+ *  RFC 1321 compliant MD5 implementation
+ *
+ *  Copyright (C) 2001-2003  Christophe Devine
+ *
+ *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <string.h>
+
+#include "md5.h"
+
+#define GET_UINT32(n,b,i)                       \
+{                                               \
+    (n) = ( (uint32) (b)[(i)    ]       )       \
+        | ( (uint32) (b)[(i) + 1] <<  8 )       \
+        | ( (uint32) (b)[(i) + 2] << 16 )       \
+        | ( (uint32) (b)[(i) + 3] << 24 );      \
+}
+
+#define PUT_UINT32(n,b,i)                       \
+{                                               \
+    (b)[(i)    ] = (uint8) ( (n)       );       \
+    (b)[(i) + 1] = (uint8) ( (n) >>  8 );       \
+    (b)[(i) + 2] = (uint8) ( (n) >> 16 );       \
+    (b)[(i) + 3] = (uint8) ( (n) >> 24 );       \
+}
+
+void md5_starts( md5_context *ctx )
+{
+    ctx->total[0] = 0;
+    ctx->total[1] = 0;
+
+    ctx->state[0] = 0x67452301;
+    ctx->state[1] = 0xEFCDAB89;
+    ctx->state[2] = 0x98BADCFE;
+    ctx->state[3] = 0x10325476;
+}
+
+void md5_process( md5_context *ctx, uint8 data[64] )
+{
+    uint32 X[16], A, B, C, D;
+
+    GET_UINT32( X[0],  data,  0 );
+    GET_UINT32( X[1],  data,  4 );
+    GET_UINT32( X[2],  data,  8 );
+    GET_UINT32( X[3],  data, 12 );
+    GET_UINT32( X[4],  data, 16 );
+    GET_UINT32( X[5],  data, 20 );
+    GET_UINT32( X[6],  data, 24 );
+    GET_UINT32( X[7],  data, 28 );
+    GET_UINT32( X[8],  data, 32 );
+    GET_UINT32( X[9],  data, 36 );
+    GET_UINT32( X[10], data, 40 );
+    GET_UINT32( X[11], data, 44 );
+    GET_UINT32( X[12], data, 48 );
+    GET_UINT32( X[13], data, 52 );
+    GET_UINT32( X[14], data, 56 );
+    GET_UINT32( X[15], data, 60 );
+
+#define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
+
+#define P(a,b,c,d,k,s,t)                                \
+{                                                       \
+    a += F(b,c,d) + X[k] + t; a = S(a,s) + b;           \
+}
+
+    A = ctx->state[0];
+    B = ctx->state[1];
+    C = ctx->state[2];
+    D = ctx->state[3];
+
+#define F(x,y,z) (z ^ (x & (y ^ z)))
+
+    P( A, B, C, D,  0,  7, 0xD76AA478 );
+    P( D, A, B, C,  1, 12, 0xE8C7B756 );
+    P( C, D, A, B,  2, 17, 0x242070DB );
+    P( B, C, D, A,  3, 22, 0xC1BDCEEE );
+    P( A, B, C, D,  4,  7, 0xF57C0FAF );
+    P( D, A, B, C,  5, 12, 0x4787C62A );
+    P( C, D, A, B,  6, 17, 0xA8304613 );
+    P( B, C, D, A,  7, 22, 0xFD469501 );
+    P( A, B, C, D,  8,  7, 0x698098D8 );
+    P( D, A, B, C,  9, 12, 0x8B44F7AF );
+    P( C, D, A, B, 10, 17, 0xFFFF5BB1 );
+    P( B, C, D, A, 11, 22, 0x895CD7BE );
+    P( A, B, C, D, 12,  7, 0x6B901122 );
+    P( D, A, B, C, 13, 12, 0xFD987193 );
+    P( C, D, A, B, 14, 17, 0xA679438E );
+    P( B, C, D, A, 15, 22, 0x49B40821 );
+
+#undef F
+
+#define F(x,y,z) (y ^ (z & (x ^ y)))
+
+    P( A, B, C, D,  1,  5, 0xF61E2562 );
+    P( D, A, B, C,  6,  9, 0xC040B340 );
+    P( C, D, A, B, 11, 14, 0x265E5A51 );
+    P( B, C, D, A,  0, 20, 0xE9B6C7AA );
+    P( A, B, C, D,  5,  5, 0xD62F105D );
+    P( D, A, B, C, 10,  9, 0x02441453 );
+    P( C, D, A, B, 15, 14, 0xD8A1E681 );
+    P( B, C, D, A,  4, 20, 0xE7D3FBC8 );
+    P( A, B, C, D,  9,  5, 0x21E1CDE6 );
+    P( D, A, B, C, 14,  9, 0xC33707D6 );
+    P( C, D, A, B,  3, 14, 0xF4D50D87 );
+    P( B, C, D, A,  8, 20, 0x455A14ED );
+    P( A, B, C, D, 13,  5, 0xA9E3E905 );
+    P( D, A, B, C,  2,  9, 0xFCEFA3F8 );
+    P( C, D, A, B,  7, 14, 0x676F02D9 );
+    P( B, C, D, A, 12, 20, 0x8D2A4C8A );
+
+#undef F
+
+#define F(x,y,z) (x ^ y ^ z)
+
+    P( A, B, C, D,  5,  4, 0xFFFA3942 );
+    P( D, A, B, C,  8, 11, 0x8771F681 );
+    P( C, D, A, B, 11, 16, 0x6D9D6122 );
+    P( B, C, D, A, 14, 23, 0xFDE5380C );
+    P( A, B, C, D,  1,  4, 0xA4BEEA44 );
+    P( D, A, B, C,  4, 11, 0x4BDECFA9 );
+    P( C, D, A, B,  7, 16, 0xF6BB4B60 );
+    P( B, C, D, A, 10, 23, 0xBEBFBC70 );
+    P( A, B, C, D, 13,  4, 0x289B7EC6 );
+    P( D, A, B, C,  0, 11, 0xEAA127FA );
+    P( C, D, A, B,  3, 16, 0xD4EF3085 );
+    P( B, C, D, A,  6, 23, 0x04881D05 );
+    P( A, B, C, D,  9,  4, 0xD9D4D039 );
+    P( D, A, B, C, 12, 11, 0xE6DB99E5 );
+    P( C, D, A, B, 15, 16, 0x1FA27CF8 );
+    P( B, C, D, A,  2, 23, 0xC4AC5665 );
+
+#undef F
+
+#define F(x,y,z) (y ^ (x | ~z))
+
+    P( A, B, C, D,  0,  6, 0xF4292244 );
+    P( D, A, B, C,  7, 10, 0x432AFF97 );
+    P( C, D, A, B, 14, 15, 0xAB9423A7 );
+    P( B, C, D, A,  5, 21, 0xFC93A039 );
+    P( A, B, C, D, 12,  6, 0x655B59C3 );
+    P( D, A, B, C,  3, 10, 0x8F0CCC92 );
+    P( C, D, A, B, 10, 15, 0xFFEFF47D );
+    P( B, C, D, A,  1, 21, 0x85845DD1 );
+    P( A, B, C, D,  8,  6, 0x6FA87E4F );
+    P( D, A, B, C, 15, 10, 0xFE2CE6E0 );
+    P( C, D, A, B,  6, 15, 0xA3014314 );
+    P( B, C, D, A, 13, 21, 0x4E0811A1 );
+    P( A, B, C, D,  4,  6, 0xF7537E82 );
+    P( D, A, B, C, 11, 10, 0xBD3AF235 );
+    P( C, D, A, B,  2, 15, 0x2AD7D2BB );
+    P( B, C, D, A,  9, 21, 0xEB86D391 );
+
+#undef F
+
+    ctx->state[0] += A;
+    ctx->state[1] += B;
+    ctx->state[2] += C;
+    ctx->state[3] += D;
+}
+
+void md5_update( md5_context *ctx, uint8 *input, uint32 length )
+{
+    uint32 left, fill;
+
+    if( ! length ) return;
+
+    left = ctx->total[0] & 0x3F;
+    fill = 64 - left;
+
+    ctx->total[0] += length;
+    ctx->total[0] &= 0xFFFFFFFF;
+
+    if( ctx->total[0] < length )
+        ctx->total[1]++;
+
+    if( left && length >= fill )
+    {
+        memcpy( (void *) (ctx->buffer + left),
+                (void *) input, fill );
+        md5_process( ctx, ctx->buffer );
+        length -= fill;
+        input  += fill;
+        left = 0;
+    }
+
+    while( length >= 64 )
+    {
+        md5_process( ctx, input );
+        length -= 64;
+        input  += 64;
+    }
+
+    if( length )
+    {
+        memcpy( (void *) (ctx->buffer + left),
+                (void *) input, length );
+    }
+}
+
+static uint8 md5_padding[64] =
+{
+ 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+void md5_finish( md5_context *ctx, uint8 digest[16] )
+{
+    uint32 last, padn;
+    uint32 high, low;
+    uint8 msglen[8];
+
+    high = ( ctx->total[0] >> 29 )
+         | ( ctx->total[1] <<  3 );
+    low  = ( ctx->total[0] <<  3 );
+
+    PUT_UINT32( low,  msglen, 0 );
+    PUT_UINT32( high, msglen, 4 );
+
+    last = ctx->total[0] & 0x3F;
+    padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );
+
+    md5_update( ctx, md5_padding, padn );
+    md5_update( ctx, msglen, 8 );
+
+    PUT_UINT32( ctx->state[0], digest,  0 );
+    PUT_UINT32( ctx->state[1], digest,  4 );
+    PUT_UINT32( ctx->state[2], digest,  8 );
+    PUT_UINT32( ctx->state[3], digest, 12 );
+}
+
diff --git a/rbutil/mkimxboot/md5.h b/rbutil/mkimxboot/md5.h
new file mode 100644
index 0000000000..71fa395548
--- /dev/null
+++ b/rbutil/mkimxboot/md5.h
@@ -0,0 +1,25 @@
+#ifndef _MD5_H
+#define _MD5_H
+
+#ifndef uint8
+#define uint8  unsigned char
+#endif
+
+#ifndef uint32
+#define uint32 unsigned long int
+#endif
+
+typedef struct
+{
+    uint32 total[2];
+    uint32 state[4];
+    uint8 buffer[64];
+}
+md5_context;
+
+void md5_starts( md5_context *ctx );
+void md5_update( md5_context *ctx, uint8 *input, uint32 length );
+void md5_finish( md5_context *ctx, uint8 digest[16] );
+
+#endif /* md5.h */
+
diff --git a/rbutil/mkimxboot/mkimxboot.c b/rbutil/mkimxboot/mkimxboot.c
new file mode 100644
index 0000000000..f1a874b3f5
--- /dev/null
+++ b/rbutil/mkimxboot/mkimxboot.c
@@ -0,0 +1,409 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   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.
+ *
+ ****************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include "mkimxboot.h"
+#include "sb.h"
+#include "dualboot.h"
+#include "md5.h"
+
+/* Supported models */
+enum imx_model_t
+{
+    MODEL_UNKNOWN = -1,
+    MODEL_FUZEPLUS = 0,
+    /* new models go here */
+
+    NUM_MODELS
+};
+
+struct imx_md5sum_t
+{
+    int model;
+    char *md5sum;
+};
+
+struct imx_model_desc_t
+{
+    /* Descriptive name of this model */
+    const char *model_name;
+    /* Dualboot code for this model */
+    const unsigned char *dualboot;
+    /* Size of dualboot functions for this model */
+    int dualboot_size;
+    /* Model name used in the Rockbox header in ".sansa" files - these match the
+       -add parameter to the "scramble" tool */
+    const char *rb_model_name;
+    /* Model number used to initialise the checksum in the Rockbox header in
+       ".sansa" files - these are the same as MODEL_NUMBER in config-target.h */
+    const int rb_model_num;
+    /* Number of keys needed to decrypt/encrypt */
+    int nr_keys;
+    /* Array of keys */
+    struct crypto_key_t *keys;
+    /* Dualboot load address */
+    uint32_t dualboot_addr;
+    /* Bootloader load address */
+    uint32_t bootloader_addr;
+};
+
+static const struct imx_md5sum_t imx_sums[] =
+{
+    { MODEL_FUZEPLUS, "c3e27620a877dc6b200b97dcb3e0ecc7" }, /* Version 2.38.6 */
+};
+
+static struct crypto_key_t zero_key =
+{
+    .method = CRYPTO_KEY,
+    .u.key = {0}
+};
+
+static const struct imx_model_desc_t imx_models[] =
+{
+    [MODEL_FUZEPLUS]  = { "Fuze+",  dualboot_fuzeplus, sizeof(dualboot_fuzeplus), "fuz+", 72,
+                          1, &zero_key },
+};
+
+#define NR_IMX_SUMS     (sizeof(imx_sums) / sizeof(imx_sums[0]))
+#define NR_IMX_MODELS   (sizeof(imx_models) / sizeof(imx_models[0]))
+
+#define MAGIC_ROCK      0x726f636b /* 'rock' */
+#define MAGIC_RECOVERY  0xfee1dead
+#define MAGIC_NORMAL    0xcafebabe
+
+static enum imx_error_t patch_std_zero_host_play(int jump_before, int model,
+ enum imx_output_type_t type, struct sb_file_t *sb_file, void *boot, size_t boot_sz)
+{
+    /* We assume the file has three boot sections: ____, host, play and one
+     * resource section rsrc.
+     *
+     * Dual Boot:
+     * ----------
+     * We patch the file by inserting the dualboot code before the <jump_before>th
+     * call in the ____ section. We give it as argument the section name 'rock'
+     * and add a section called 'rock' after rsrc which contains the bootloader.
+     *
+     * Single Boot & Recovery:
+     * -----------------------
+     * We patch the file by inserting the bootloader code after the <jump_before>th
+     * call in the ____ section and get rid of everything else. In recovery mode,
+     * we give 0xfee1dead as argument */
+
+    /* Do not override real key and IV */
+    sb_file->override_crypto_iv = false;
+    sb_file->override_real_key = false;
+
+    /* first locate the good instruction */
+    struct sb_section_t *sec = &sb_file->sections[0];
+    int jump_idx = 0;
+    while(jump_idx < sec->nr_insts && jump_before > 0)
+        if(sec->insts[jump_idx++].inst == SB_INST_CALL)
+            jump_before--;
+    if(jump_idx == sec->nr_insts)
+    {
+        printf("[ERR] Cannot locate call in section ____\n");
+        return IMX_DONT_KNOW_HOW_TO_PATCH;
+    }
+
+    if(type == IMX_DUALBOOT)
+    {
+        /* create a new instruction array with a hole for two instructions */
+        struct sb_inst_t *new_insts = xmalloc(sizeof(struct sb_inst_t) * (sec->nr_insts + 2));
+        memcpy(new_insts, sec->insts, sizeof(struct sb_inst_t) * jump_idx);
+        memcpy(new_insts + jump_idx + 2, sec->insts + jump_idx,
+            sizeof(struct sb_inst_t) * (sec->nr_insts - jump_idx));
+        /* first instruction is be a load */
+        struct sb_inst_t *load = &new_insts[jump_idx];
+        memset(load, 0, sizeof(struct sb_inst_t));
+        load->inst = SB_INST_LOAD;
+        load->size = imx_models[model].dualboot_size;
+        load->addr = imx_models[model].dualboot_addr;
+        /* duplicate memory because it will be free'd */
+        load->data = memdup(imx_models[model].dualboot, imx_models[model].dualboot_size);
+        /* second instruction is a call */
+        struct sb_inst_t *call = &new_insts[jump_idx + 1];
+        memset(call, 0, sizeof(struct sb_inst_t));
+        call->inst = SB_INST_CALL;
+        call->addr = imx_models[model].dualboot_addr;
+        call->argument = MAGIC_ROCK;
+        /* free old instruction array */
+        free(sec->insts);
+        sec->insts = new_insts;
+        sec->nr_insts += 2;
+
+        /* create a new section */
+        struct sb_section_t rock_sec;
+        memset(&rock_sec, 0, sizeof(rock_sec));
+        /* section has two instructions: load and call */
+        rock_sec.identifier = MAGIC_ROCK;
+        rock_sec.alignment = BLOCK_SIZE;
+        rock_sec.nr_insts = 2;
+        rock_sec.insts = xmalloc(2 * sizeof(struct sb_inst_t));
+        memset(rock_sec.insts, 0, 2 * sizeof(struct sb_inst_t));
+        rock_sec.insts[0].inst = SB_INST_LOAD;
+        rock_sec.insts[0].size = boot_sz;
+        rock_sec.insts[0].data = memdup(boot, boot_sz);
+        rock_sec.insts[0].addr = imx_models[model].bootloader_addr;
+        rock_sec.insts[1].inst = SB_INST_CALL;
+        rock_sec.insts[1].addr = imx_models[model].bootloader_addr;
+        rock_sec.insts[1].argument = MAGIC_NORMAL;
+
+        sb_file->sections = augment_array(sb_file->sections,
+            sizeof(struct sb_section_t), sb_file->nr_sections,
+            &rock_sec, 1);
+        sb_file->nr_sections++;
+
+        return IMX_SUCCESS;
+    }
+    else if(type == IMX_SINGLEBOOT || type == IMX_RECOVERY)
+    {
+        bool recovery = type == IMX_RECOVERY;
+        /* remove everything after the call and add two instructions: load and call */
+        struct sb_inst_t *new_insts = xmalloc(sizeof(struct sb_inst_t) * (jump_idx + 2));
+        memcpy(new_insts, sec->insts, sizeof(struct sb_inst_t) * jump_idx);
+        for(int i = jump_idx; i < sec->nr_insts; i++)
+            sb_free_instruction(sec->insts[i]);
+        memset(new_insts + jump_idx, 0, 2 * sizeof(struct sb_inst_t));
+        new_insts[jump_idx + 0].inst = SB_INST_LOAD;
+        new_insts[jump_idx + 0].size = boot_sz;
+        new_insts[jump_idx + 0].data = memdup(boot, boot_sz);
+        new_insts[jump_idx + 0].addr = imx_models[model].bootloader_addr;
+        new_insts[jump_idx + 1].inst = SB_INST_CALL;
+        new_insts[jump_idx + 1].addr = imx_models[model].bootloader_addr;
+        new_insts[jump_idx + 1].argument = recovery ? MAGIC_RECOVERY : MAGIC_NORMAL;
+        
+        free(sec->insts);
+        sec->insts = new_insts;
+        sec->nr_insts = jump_idx + 2;
+        /* remove all other sections */
+        for(int i = 1; i < sb_file->nr_sections; i++)
+            sb_free_section(sb_file->sections[i]);
+        struct sb_section_t *new_sec = xmalloc(sizeof(struct sb_section_t));
+        memcpy(new_sec, &sb_file->sections[0], sizeof(struct sb_section_t));
+        free(sb_file->sections);
+        sb_file->sections = new_sec;
+        sb_file->nr_sections = 1;
+
+        return IMX_SUCCESS;
+    }
+    else
+    {
+        printf("[ERR] Bad output type !\n");
+        return IMX_DONT_KNOW_HOW_TO_PATCH;
+    }
+}
+
+static enum imx_error_t patch_firmware(int model, enum imx_output_type_t type,
+    struct sb_file_t *sb_file, void *boot, size_t boot_sz)
+{
+    switch(model)
+    {
+        case MODEL_FUZEPLUS:
+            /* The Fuze+ uses the standard ____, host, play sections, patch after third
+             * call in ____ section */
+            return patch_std_zero_host_play(3, model, type, sb_file, boot, boot_sz);
+        default:
+            return IMX_DONT_KNOW_HOW_TO_PATCH;
+    }
+}
+
+static void imx_printf(void *user, bool error, color_t c, const char *fmt, ...)
+{
+    (void) user;
+    (void) c;
+    va_list args;
+    va_start(args, fmt);
+    /*
+    if(error)
+        printf("[ERR] ");
+    else
+        printf("[INFO] ");
+    */
+    vprintf(fmt, args);
+    va_end(args);
+}
+
+static uint32_t get_uint32be(unsigned char *p)
+{
+    return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
+}
+
+enum imx_error_t mkimxboot(const char *infile, const char *bootfile,
+    const char *outfile, struct imx_option_t opt)
+{
+    /* Dump tables */
+    do
+    {
+        printf("[INFO] mkimxboot models:\n");
+        for(int i = 0; i < NR_IMX_MODELS; i++)
+        {
+            printf("[INFO]   %s: idx=%d rb_model=%s rb_num=%d\n",
+                imx_models[i].model_name, i, imx_models[i].rb_model_name,
+                imx_models[i].rb_model_num);
+        }
+        printf("[INFO] mkimxboot mapping:\n");
+        for(int i = 0; i < NR_IMX_SUMS; i++)
+        {
+            printf("[INFO]   md5sum=%s -> idx=%d\n", imx_sums[i].md5sum,
+                imx_sums[i].model);
+        }
+    }while(0);
+    /* compute MD5 sum of the file */
+    uint8_t file_md5sum[16];
+    do
+    {
+        FILE *f = fopen(infile, "rb");
+        if(f == NULL)
+        {
+            printf("[ERR] Cannot open input file\n");
+            return IMX_OPEN_ERROR;
+        }
+        fseek(f, 0, SEEK_END);
+        size_t sz = ftell(f);
+        fseek(f, 0, SEEK_SET);
+        void *buf = xmalloc(sz);
+        if(fread(buf, sz, 1, f) != 1)
+        {
+            fclose(f);
+            free(buf);
+            printf("[ERR] Cannot read file\n");
+            return IMX_READ_ERROR;
+        }
+        fclose(f);
+        md5_context ctx;
+        md5_starts(&ctx);
+        md5_update(&ctx, buf, sz);
+        md5_finish(&ctx, file_md5sum);
+        free(buf);
+    }while(0);
+    printf("[INFO] MD5 sum of the file: ");
+    print_hex(file_md5sum, 16, true);
+    /* find model */
+    int model;
+    do
+    {
+        int i = 0;
+        while(i < NR_IMX_SUMS)
+        {
+            uint8_t md5[20];
+            if(strlen(imx_sums[i].md5sum) != 32)
+            {
+                printf("[INFO] Invalid MD5 sum in imx_sums\n");
+                return IMX_ERROR;
+            }
+            for(int j = 0; j < 16; j++)
+            {
+                byte a, b;
+                if(convxdigit(imx_sums[i].md5sum[2 * j], &a) || convxdigit(imx_sums[i].md5sum[2 * j + 1], &b))
+                    return false;
+                md5[j] = (a << 4) | b;
+            }
+            if(memcmp(file_md5sum, md5, 16) == 0)
+                break;
+            i++;
+        }
+        if(i == NR_IMX_SUMS)
+        {
+            printf("[ERR] MD5 sum doesn't match any known file\n");
+            return IMX_NO_MATCH;
+        }
+        model = imx_sums[i].model;
+    }while(0);
+    printf("[INFO] File is for model %d (%s)\n", model, imx_models[model].model_name);
+    /* load rockbox file */
+    uint8_t *boot;
+    size_t boot_size;
+    do
+    {
+        FILE *f = fopen(bootfile, "rb");
+        if(f == NULL)
+        {
+            printf("[ERR] Cannot open boot file\n");
+            return IMX_OPEN_ERROR;
+        }
+        fseek(f, 0, SEEK_END);
+        boot_size = ftell(f);
+        fseek(f, 0, SEEK_SET);
+        boot = xmalloc(boot_size);
+        if(fread(boot, boot_size, 1, f) != 1)
+        {
+            free(boot);
+            fclose(f);
+            printf("[ERR] Cannot read boot file\n");
+            return IMX_READ_ERROR;
+        }
+        fclose(f);
+    }while(0);
+    /* Check boot file */
+    do
+    {
+        if(boot_size < 8)
+        {
+            printf("[ERR] Bootloader file is too small to be valid\n");
+            free(boot);
+            return IMX_BOOT_INVALID;
+        }
+        /* check model name */
+        uint8_t *name = boot + 4;
+        if(memcmp(name, imx_models[model].rb_model_name, 4) != 0)
+        {
+            printf("[ERR] Bootloader model doesn't match found model for input file\n");
+            free(boot);
+            return IMX_BOOT_MISMATCH;
+        }
+        /* check checksum */
+        uint32_t sum = imx_models[model].rb_model_num;
+        for(int i = 8; i < boot_size; i++)
+            sum += boot[i];
+        if(sum != get_uint32be(boot))
+        {
+            printf("[ERR] Bootloader checksum mismatch\n");
+            free(boot);
+            return IMX_BOOT_CHECKSUM_ERROR;
+        }
+    }while(0);
+    /* load OF file */
+    struct sb_file_t *sb_file;
+    do
+    {
+        enum sb_error_t err;
+        g_debug = opt.debug;
+        clear_keys();
+        add_keys(imx_models[model].keys, imx_models[model].nr_keys);
+        sb_file = sb_read_file(infile, false, NULL, &imx_printf, &err);
+        if(sb_file == NULL)
+        {
+            clear_keys();
+            free(boot);
+            return IMX_FIRST_SB_ERROR + err;
+        }
+    }while(0);
+    /* produce file */
+    enum imx_error_t ret = patch_firmware(model, opt.output, sb_file, boot + 8, boot_size - 8);
+    if(ret == IMX_SUCCESS)
+        ret = sb_write_file(sb_file, outfile);
+
+    clear_keys();
+    free(boot);
+    sb_free(sb_file);
+    return ret;
+}
diff --git a/rbutil/mkimxboot/mkimxboot.h b/rbutil/mkimxboot/mkimxboot.h
new file mode 100644
index 0000000000..97642c5d84
--- /dev/null
+++ b/rbutil/mkimxboot/mkimxboot.h
@@ -0,0 +1,55 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   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.
+ *
+ ****************************************************************************/
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include "sb.h"
+
+enum imx_error_t
+{
+    IMX_SUCCESS = 0,
+    IMX_ERROR = -1,
+    IMX_OPEN_ERROR = -2,
+    IMX_READ_ERROR = -3,
+    IMX_NO_MATCH = -4,
+    IMX_BOOT_INVALID = -5,
+    IMX_BOOT_MISMATCH = -6,
+    IMX_BOOT_CHECKSUM_ERROR = -7,
+    IMX_DONT_KNOW_HOW_TO_PATCH = -8,
+    IMX_FIRST_SB_ERROR = -9,
+};
+
+enum imx_output_type_t
+{
+    IMX_DUALBOOT = 0,
+    IMX_RECOVERY = 1,
+    IMX_SINGLEBOOT = 2,
+};
+
+struct imx_option_t
+{
+    bool debug;
+    enum imx_output_type_t output;
+};
+
+enum imx_error_t mkimxboot(const char *infile, const char *bootfile,
+    const char *outfile, struct imx_option_t opt);