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#397306 ·published 2007-03-16 11:48 UTC
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Index: tools/configure
===================================================================
--- tools/configure	(revision 12800)
+++ tools/configure	(working copy)
@@ -1164,16 +1164,16 @@
     target="-DIRIVER_H10"
     memory=32 # always
     arm7tdmicc
-    tool="$rootdir/tools/scramble -add=h10"
+    tool="$rootdir/tools/scramble -mi4v3 -model=h10 -type=RBOS"
     bmp2rb_mono="$rootdir/tools/bmp2rb -f 0"
     bmp2rb_native="$rootdir/tools/bmp2rb -f 4"
-    output="rockbox.h10"
+    output="rockbox.mi4"
     appextra="recorder:gui"
     archosrom=""
     flash=""
     plugins="yes"
     codecs="libmad liba52 libffmpegFLAC libTremor libwavpack libmusepack libalac libfaad libm4a  libspeex"
-    boottool="$rootdir/tools/scramble -mi4v3"
+    boottool="$rootdir/tools/scramble -mi4v3 -model=h10 -type=RBBL"
     bootoutput="H10_20GC.mi4"
     # toolset is the tools within the tools directory that we build for
     # this particular target.
@@ -1184,22 +1184,48 @@
     t_model="h10"
     ;;
 
+   15|h10_5gb)
+    target_id=24
+    archos="h10_5gb"
+    target="-DIRIVER_H10_5GB"
+    memory=32 # always
+    arm7tdmicc
+    tool="$rootdir/tools/scramble -mi4v2 -model=h105 -type=RBOS"
+    bmp2rb_mono="$rootdir/tools/bmp2rb -f 0"
+    bmp2rb_native="$rootdir/tools/bmp2rb -f 5"
+    output="rockbox.mi4"
+    appextra="recorder:gui"
+    archosrom=""
+    flash=""
+    plugins="yes"
+    codecs="libmad liba52 libffmpegFLAC libTremor libwavpack libmusepack libalac libfaad libm4a  libspeex"
+    boottool="$rootdir/tools/scramble -mi4v2 -model=h105 -type=RBBL"
+    bootoutput="H10.mi4"
+    # toolset is the tools within the tools directory that we build for
+    # this particular target.
+    toolset="$genericbitmaptools scramble"
+    # architecture, manufacturer and model for the target-tree build
+    t_cpu="arm"
+    t_manufacturer="iriver"
+    t_model="h10"
+    ;;
+
    50|e200)
     target_id=23
     archos="e200"
     target="-DSANSA_E200"
     memory=32 # supposedly
     arm7tdmicc
-    tool="$rootdir/tools/scramble -add=e200"
+    tool="$rootdir/tools/scramble -mi4v3 -model=e200 -type=RBOS"
     bmp2rb_mono="$rootdir/tools/bmp2rb -f 0"
     bmp2rb_native="$rootdir/tools/bmp2rb -f 4"
-    output="rockbox.e200"
+    output="rockbox.mi4"
     appextra="recorder:gui"
     archosrom=""
     flash=""
     plugins="yes"
     codecs="libmad liba52 libffmpegFLAC libTremor libwavpack libmusepack libalac libfaad libm4a  libspeex"
-    boottool="$rootdir/tools/scramble -mi4v3"
+    boottool="$rootdir/tools/scramble -mi4v3 -model=e200 -type=RBBL"
     bootoutput="PP5022.mi4"
     # toolset is the tools within the tools directory that we build for
     # this particular target.
@@ -1219,16 +1245,16 @@
     target="-DSANSA_E200"
     memory=32 # supposedly
     arm7tdmicc
-    tool="$rootdir/tools/scramble -add=e200"
+    tool="$rootdir/tools/scramble -mi4v3 -model=e20r -type=RBOS"
     bmp2rb_mono="$rootdir/tools/bmp2rb -f 0"
     bmp2rb_native="$rootdir/tools/bmp2rb -f 4"
-    output="rockbox.e200"
+    output="rockbox.mi4"
     appextra="recorder:gui"
     archosrom=""
     flash=""
     plugins="yes"
     codecs="libmad liba52 libffmpegFLAC libTremor libwavpack libmusepack libalac libfaad libm4a  libspeex"
-    boottool="$rootdir/tools/scramble -mi4r"
+    boottool="$rootdir/tools/scramble -mi4r -model=e20r -type=RBBL"
     bootoutput="pp5022.mi4"
     # toolset is the tools within the tools directory that we build for
     # this particular target.
@@ -1239,32 +1265,6 @@
     t_model="sansa-e200"
     ;;
 
-   15|h10_5gb)
-    target_id=24
-    archos="h10_5gb"
-    target="-DIRIVER_H10_5GB"
-    memory=32 # always
-    arm7tdmicc
-    tool="$rootdir/tools/scramble -add=h10_5gb"
-    bmp2rb_mono="$rootdir/tools/bmp2rb -f 0"
-    bmp2rb_native="$rootdir/tools/bmp2rb -f 5"
-    output="rockbox.h10"
-    appextra="recorder:gui"
-    archosrom=""
-    flash=""
-    plugins="yes"
-    codecs="libmad liba52 libffmpegFLAC libTremor libwavpack libmusepack libalac libfaad libm4a  libspeex"
-    boottool="$rootdir/tools/scramble -mi4v2"
-    bootoutput="H10.mi4"
-    # toolset is the tools within the tools directory that we build for
-    # this particular target.
-    toolset="$genericbitmaptools scramble"
-    # architecture, manufacturer and model for the target-tree build
-    t_cpu="arm"
-    t_manufacturer="iriver"
-    t_model="h10"
-    ;;
-
    60|tpj1022)
     target_id=25
     archos="tpj1022"
Index: bootloader/main-pp.c
===================================================================
--- bootloader/main-pp.c	(revision 12800)
+++ bootloader/main-pp.c	(working copy)
@@ -29,7 +29,81 @@
 #include "ata.h"
 #include "button.h"
 #include "disk.h"
+#include <string.h>
 
+/*
+ * CRC32 implementation taken from:
+ *
+ * efone - Distributed internet phone system.
+ *
+ * (c) 1999,2000 Krzysztof Dabrowski
+ * (c) 1999,2000 ElysiuM deeZine
+ *
+ * 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.
+ *
+ */
+
+/* based on implementation by Finn Yannick Jacobs */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+/* crc_tab[] -- this crcTable is being build by chksum_crc32GenTab().
+ *		so make sure, you call it before using the other
+ *		functions!
+ */
+static unsigned int crc_tab[256];
+
+/* chksum_crc() -- to a given block, this one calculates the
+ *				crc32-checksum until the length is
+ *				reached. the crc32-checksum will be
+ *				the result.
+ */
+unsigned int chksum_crc32 (unsigned char *block, unsigned int length)
+{
+   register unsigned long crc;
+   unsigned long i;
+
+   crc = 0;
+   for (i = 0; i < length; i++)
+   {
+      crc = ((crc >> 8) & 0x00FFFFFF) ^ crc_tab[(crc ^ *block++) & 0xFF];
+   }
+   return (crc);
+}
+
+/* chksum_crc32gentab() --      to a global crc_tab[256], this one will
+ *				calculate the crcTable for crc32-checksums.
+ *				it is generated to the polynom [..]
+ */
+
+static void chksum_crc32gentab (void)
+{
+   unsigned long crc, poly;
+   int i, j;
+
+   poly = 0xEDB88320L;
+   for (i = 0; i < 256; i++)
+   {
+      crc = i;
+      for (j = 8; j > 0; j--)
+      {
+	 if (crc & 1)
+	 {
+	    crc = (crc >> 1) ^ poly;
+	 }
+	 else
+	 {
+	    crc >>= 1;
+	 }
+      }
+      crc_tab[i] = crc;
+   }
+}
+
 /* Button definitions */
 #if CONFIG_KEYPAD == IRIVER_H10_PAD
 #define BOOTLOADER_VERBOSE      BUTTON_PLAY
@@ -50,21 +124,186 @@
 /* Bootloader version */
 char version[] = APPSVERSION;
 
+/* Locations and sizes in hidden partition on Sansa */
+#define PPMI_OFFSET         1024
+#define PPMI_SIZE           1
+#define MI4_HEADER_SIZE     1
+
+/* mi4 header structure */
+struct mi4header_t {
+    unsigned char magic[4];
+    uint32_t version;
+    uint32_t length;
+    uint32_t crc32;
+    uint32_t enctype;
+    uint32_t mi4size;
+    uint32_t plaintext;
+    uint32_t dsa_key[10];
+    uint32_t pad[109];
+    unsigned char type[4];
+    unsigned char model[4];
+};
+
+/* PPMI header structure */
+struct ppmi_header_t {
+    unsigned char magic[4];
+    uint32_t length;
+    uint32_t pad[126];
+};
+
+/* Load mi4 format firmware image */
+int load_mi4(unsigned char* buf, char* firmware, int buffer_size)
+{
+    int fd;
+    int rc;
+    int len;
+    unsigned long chksum;
+    char model[5], type[5];
+    unsigned long sum;
+    char filename[MAX_PATH];
+
+    snprintf(filename,sizeof(filename),"/.rockbox/%s",firmware);
+    fd = open(filename, O_RDONLY);
+    if(fd < 0)
+    {
+        snprintf(filename,sizeof(filename),"/%s",firmware);
+        fd = open(filename, O_RDONLY);
+        if(fd < 0)
+            return EFILE_NOT_FOUND;
+    }
+
+    /* Determinte firmware size */
+    len = filesize(fd) - 0x200;
+
+    printf("Length: %x", len);
+
+    if (len > buffer_size)
+        return EFILE_TOO_BIG;
+
+
+    /* Read CRC */
+    lseek(fd, FIRMWARE_OFFSET_FILE_CRC, SEEK_SET);
+
+    rc = read(fd, &chksum, 4);
+
+    if(rc < 4)
+        return EREAD_CHKSUM_FAILED;
+
+    printf("Checksum: %x", chksum);
+
+    /* Read model id */
+    lseek(fd, FIRMWARE_OFFSET_FILE_MODEL, SEEK_SET);
+    rc = read(fd, model, 4);
+    if(rc < 4)
+        return EREAD_MODEL_FAILED;
+
+    model[4] = 0;
+
+    printf("Model name: %s", model);
+
+    /* Read binary type (RBOS, RBBL) */
+    lseek(fd, FIRMWARE_OFFSET_FILE_TYPE, SEEK_SET);
+    rc = read(fd, type, 4);
+    if(rc < 4)
+        return EREAD_MODEL_FAILED;
+
+    type[4] = 0;
+
+    printf("Binary type: %s", type);
+
+    /* Load firmware */
+    printf("Loading %s", firmware);
+
+    lseek(fd, FIRMWARE_OFFSET_FILE_DATA, SEEK_SET);
+
+    rc = read(fd, buf, len);
+    if(rc < len)
+        return EREAD_IMAGE_FAILED;
+
+    /* Calculate CRC32 checksum */
+    sum = chksum_crc32 (buf,len);
+
+    printf("Sum: %x", sum);
+
+    if(sum != chksum)
+        return EBAD_CHKSUM;
+
+    return EOK;
+}
+
+/* Load mi4 firmware from a hidden disk partition */
+int load_mi4_part(unsigned char* buf, struct partinfo* pinfo, unsigned int buffer_size)
+{
+    struct mi4header_t mi4header;
+    struct ppmi_header_t ppmi_header;
+    unsigned long sum;
+    
+    /* Read header to find out how long the mi4 file is. */
+    ata_read_sectors(pinfo->start + PPMI_OFFSET, PPMI_SIZE, &ppmi_header);
+    
+    /* The first four characters at 0x80000 (sector 1024) should be PPMI*/
+    if( memcmp(ppmi_header.magic, "PPMI", 4) )
+        return EFILE_NOT_FOUND;
+    
+    printf("BL mi4 size: %x", ppmi_header.length);
+    
+    /* Read mi4 header of the OF */
+    ata_read_sectors(pinfo->start + PPMI_OFFSET + PPMI_SIZE 
+                       + (ppmi_header.length/512), MI4_HEADER_SIZE, &mi4header);
+    
+    /* MI4 file size */
+    printf("OF mi4 size: %x", mi4header.length);
+
+    if (mi4header.length > buffer_size)
+        return EFILE_TOO_BIG;
+
+    /* CRC32 */
+    printf("CRC32: %x", mi4header.crc32);
+
+    /* Rockbox model id */
+    printf("Model id: %s", mi4header.model);
+
+    /* Read binary type (RBOS, RBBL) */
+    printf("Binary type: %s", mi4header.type);
+
+    /* Load firmware */
+    ata_read_sectors(pinfo->start + PPMI_OFFSET + PPMI_SIZE
+                        + (ppmi_header.length/512) + MI4_HEADER_SIZE,
+                        (mi4header.length-0x200)/512, buf);
+
+    /* Check CRC32 to see if we have a valid file */
+    sum = chksum_crc32 (buf,mi4header.mi4size-0x200);
+
+    printf("Calculated CRC32: %x", sum);
+
+    if(sum != mi4header.crc32)
+        return EBAD_CHKSUM;
+    
+    return EOK;
+}
+
 void* main(void)
 {
     char buf[256];
     int i;
     int btn;
     int rc;
+    int num_partitions;
     unsigned short* identify_info;
     struct partinfo* pinfo;
 
+    chksum_crc32gentab ();
+
     system_init();
     kernel_init();
     lcd_init();
     font_init();
     button_init();
 
+    lcd_set_foreground(LCD_WHITE);
+    lcd_set_background(LCD_BLACK);
+    lcd_clear_display();
+    
     btn = button_read_device();
 
     /* Enable bootloader messages */
@@ -94,31 +333,67 @@
     }
 
     disk_init();
-    rc = disk_mount_all();
-    if (rc<=0)
+    num_partitions = disk_mount_all();
+    if (num_partitions<=0)
     {
-        error(EDISK,rc);
+        error(EDISK,num_partitions);
     }
 
-    pinfo = disk_partinfo(0);
-    printf("Partition 0: 0x%02x %ld MB", pinfo->type, pinfo->size / 2048);
+    for(i=0; i<4; i++)
+    {
+        pinfo = disk_partinfo(i);
+        printf("Partition %d: 0x%02x %ld MB",
+                i, pinfo->type, pinfo->size / 2048);
+    }
 
     if(btn & BOOTLOADER_BOOT_OF)
     {
-        /* Load original mi4 firmware. This expects a file called 
-           "/System/OF.bin" on the player. It should be a mi4 firmware decrypted 
-           and header stripped using mi4code. It reads the file in to a memory
-           buffer called loadbuffer. The rest of the loading is done in crt0.S
+        /* Load original mi4 firmware in to a memory buffer called loadbuffer.
+           The rest of the loading is done in crt0.S.
+           1) First try reading from the hidden partition (on Sansa only).
+           2) Next try a decrypted mi4 file in /System/OF.mi4
+           3) Finally, try a raw firmware binary in /System/OF.mi4. It should be
+              a mi4 firmware decrypted and header stripped using mi4code.
         */
         printf("Loading original firmware...");
+        
+        /* First try a hidden partition */
+        printf("Trying hidden partition");
+        pinfo = disk_partinfo(1);
+        if(pinfo->type == PARTITION_TYPE_HIDDEN)
+        {
+            rc = load_mi4_part(loadbuffer, pinfo, MAX_LOADSIZE);
+            if (rc < EOK) {
+                printf("Can't load from partition");
+                printf(strerror(rc));
+            } else {
+                return (void*)loadbuffer;
+            }
+        } else {
+            printf("No hidden partition found.");
+        }
+
+        printf("Trying /System/OF.mi4");
+        rc=load_mi4(loadbuffer, "/System/OF.mi4", MAX_LOADSIZE);
+        if (rc < EOK) {
+            printf("Can't load /System/OF.mi4");
+            printf(strerror(rc));
+        } else {
+            return (void*)loadbuffer;
+        }
+
+        printf("Trying /System/OF.bin");
         rc=load_raw_firmware(loadbuffer, "/System/OF.bin", MAX_LOADSIZE);
         if (rc < EOK) {
             printf("Can't load /System/OF.bin");
-            error(EBOOTFILE, rc);
+            printf(strerror(rc));
+        } else {
+            return (void*)loadbuffer;
         }
+
     } else {
         printf("Loading Rockbox...");
-        rc=load_firmware(loadbuffer, BOOTFILE, MAX_LOADSIZE);
+        rc=load_mi4(loadbuffer, BOOTFILE, MAX_LOADSIZE);
         if (rc < EOK) {
             printf("Can't load %s:", BOOTFILE);
             error(EBOOTFILE, rc);
Index: firmware/export/config-h10.h
===================================================================
--- firmware/export/config-h10.h	(revision 12800)
+++ firmware/export/config-h10.h	(working copy)
@@ -138,13 +138,19 @@
 #define HAVE_ATA_POWER_OFF
 
 /* Offset ( in the firmware file's header ) to the file length */
-#define FIRMWARE_OFFSET_FILE_LENGTH 0
+#define FIRMWARE_OFFSET_FILE_LENGTH 0x8
 
 /* Offset ( in the firmware file's header ) to the file CRC */
-#define FIRMWARE_OFFSET_FILE_CRC 0
+#define FIRMWARE_OFFSET_FILE_CRC    0x0c
 
+/* Offset ( in the firmware file's header ) to the file type */
+#define FIRMWARE_OFFSET_FILE_TYPE   0x1f8
+
+/* Offset ( in the firmware file's header ) to the file model id */
+#define FIRMWARE_OFFSET_FILE_MODEL  0x1fc
+
 /* Offset ( in the firmware file's header ) to the real data */
-#define FIRMWARE_OFFSET_FILE_DATA 8
+#define FIRMWARE_OFFSET_FILE_DATA   0x200
 
 /* #define USB_IPODSTYLE */
 
@@ -160,7 +166,7 @@
 /* Define this if you have adjustable CPU frequency */
 /*#define HAVE_ADJUSTABLE_CPU_FREQ*/
 
-#define BOOTFILE_EXT "h10"
+#define BOOTFILE_EXT "mi4"
 #define BOOTFILE "rockbox." BOOTFILE_EXT
 
 #define ICODE_ATTR_TREMOR_NOT_MDCT
Index: firmware/export/config-e200.h
===================================================================
--- firmware/export/config-e200.h	(revision 12800)
+++ firmware/export/config-e200.h	(working copy)
@@ -108,13 +108,19 @@
 #define CONFIG_LCD LCD_X5
 
 /* Offset ( in the firmware file's header ) to the file length */
-#define FIRMWARE_OFFSET_FILE_LENGTH 0
+#define FIRMWARE_OFFSET_FILE_LENGTH 0x8
 
 /* Offset ( in the firmware file's header ) to the file CRC */
-#define FIRMWARE_OFFSET_FILE_CRC 0
+#define FIRMWARE_OFFSET_FILE_CRC    0x0c
 
+/* Offset ( in the firmware file's header ) to the file type */
+#define FIRMWARE_OFFSET_FILE_TYPE   0x1f8
+
+/* Offset ( in the firmware file's header ) to the file model id */
+#define FIRMWARE_OFFSET_FILE_MODEL  0x1fc
+
 /* Offset ( in the firmware file's header ) to the real data */
-#define FIRMWARE_OFFSET_FILE_DATA 8
+#define FIRMWARE_OFFSET_FILE_DATA   0x200
 
 /* #define USB_IPODSTYLE */
 
@@ -130,7 +136,7 @@
 /* Define this if you have adjustable CPU frequency */
 /*#define HAVE_ADJUSTABLE_CPU_FREQ Let's say we don't for now*/
 
-#define BOOTFILE_EXT "e200"
+#define BOOTFILE_EXT "mi4"
 #define BOOTFILE "rockbox." BOOTFILE_EXT
 
 #define ICODE_ATTR_TREMOR_NOT_MDCT
Index: firmware/export/config-h10_5gb.h
===================================================================
--- firmware/export/config-h10_5gb.h	(revision 12800)
+++ firmware/export/config-h10_5gb.h	(working copy)
@@ -118,13 +118,19 @@
 #define HAVE_ATA_POWER_OFF
 
 /* Offset ( in the firmware file's header ) to the file length */
-#define FIRMWARE_OFFSET_FILE_LENGTH 0
+#define FIRMWARE_OFFSET_FILE_LENGTH 0x8
 
 /* Offset ( in the firmware file's header ) to the file CRC */
-#define FIRMWARE_OFFSET_FILE_CRC 0
+#define FIRMWARE_OFFSET_FILE_CRC    0x0c
 
+/* Offset ( in the firmware file's header ) to the file type */
+#define FIRMWARE_OFFSET_FILE_TYPE   0x1f8
+
+/* Offset ( in the firmware file's header ) to the file model id */
+#define FIRMWARE_OFFSET_FILE_MODEL  0x1fc
+
 /* Offset ( in the firmware file's header ) to the real data */
-#define FIRMWARE_OFFSET_FILE_DATA 8
+#define FIRMWARE_OFFSET_FILE_DATA   0x200
 
 /* #define USB_IPODSTYLE */
 
@@ -140,7 +146,7 @@
 /* Define this if you have adjustable CPU frequency */
 /*#define HAVE_ADJUSTABLE_CPU_FREQ*/
 
-#define BOOTFILE_EXT "h10"
+#define BOOTFILE_EXT "mi4"
 #define BOOTFILE "rockbox." BOOTFILE_EXT
 
 #define ICODE_ATTR_TREMOR_NOT_MDCT
Index: firmware/export/disk.h
===================================================================
--- firmware/export/disk.h	(revision 12800)
+++ firmware/export/disk.h	(working copy)
@@ -30,6 +30,7 @@
 #define PARTITION_TYPE_FAT32     0x0b
 #define PARTITION_TYPE_FAT32_LBA 0x0c
 #define PARTITION_TYPE_FAT16     0x06
+#define PARTITION_TYPE_HIDDEN    0x84
 
 /* returns a pointer to an array of 8 partinfo structs */
 struct partinfo* disk_init(IF_MV_NONVOID(int volume));
Index: firmware/target/arm/crt0-pp.S
===================================================================
--- firmware/target/arm/crt0-pp.S	(revision 12800)
+++ firmware/target/arm/crt0-pp.S	(working copy)
@@ -54,7 +54,7 @@
 
     b      pad_skip
 
-.space 50*4 /* (more than enough) space for exception vectors */
+.space 60*4 /* (more than enough) space for exception vectors and mi4 magic */
 
 pad_skip:
 #ifdef SANSA_E200