* Commit dual-boot support for Creative ZVx family

 * Add mkzenboot: makes it possible to integrate Rockbox bootloader with
   Creative firmwares without the need of distributing binaries
 * Add Tadeusz Pyś to credits, who figured out the minifs file system
 * Fix bootloader


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18352 a1c6a512-1295-4272-9138-f99709370657

bootloader/SOURCES

@@ -33,4 +33,6 @@ telechips.c
 meizu_m6sl.c
 #elif defined(ONDA_VX747)
 ondavx747.c
+#elif defined(CREATIVE_ZVM)
+creativezvm.c
 #endif

bootloader/creativezvm.c

@@ -0,0 +1,113 @@
+/***************************************************************************
+*             __________               __   ___.
+*   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+*   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+*   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+*   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+*                     \/            \/     \/    \/            \/
+* $Id$
+*
+* Copyright (C) 2008 by Maurus Cuelenaere
+*
+* All files in this archive are subject to the GNU General Public License.
+* See the file COPYING in the source tree root for full license agreement.
+*
+* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+* KIND, either express or implied.
+*
+****************************************************************************/
+
+#include "system.h"
+#include "lcd.h"
+#include "kernel.h"
+#include "thread.h"
+#include "ata.h"
+#include "ata-target.h"
+#include "disk.h"
+#include "font.h"
+#include "backlight.h"
+#include "button.h"
+#include "common.h"
+
+
+static void load_fw(unsigned char* ptr, unsigned int len)
+{
+    (void)ptr;
+    (void)len;
+    asm volatile("ldr pc, =0x1EE0000");
+}
+
+void main(void)
+{
+    unsigned char* loadbuffer;
+    int buffer_size;
+    int(*kernel_entry)(void);
+    int ret;
+
+	/* Make sure interrupts are disabled */
+	set_irq_level(IRQ_DISABLED);
+    set_fiq_status(FIQ_DISABLED);
+    system_init();
+    kernel_init();
+
+	/* Now enable interrupts */
+	set_irq_level(IRQ_ENABLED);
+    set_fiq_status(FIQ_ENABLED);
+    backlight_init();
+    lcd_init();
+    font_init();
+    button_init();
+
+    lcd_enable(true);
+    lcd_setfont(FONT_SYSFIXED);
+    reset_screen();
+    printf("Rockbox boot loader");
+    printf("Version %s", APPSVERSION);
+
+	ret = ata_init();
+	if(ret)
+		printf("ATA error: %d", ret);
+
+    if(1)
+    {
+        printf("Loading Creative firmware...");
+
+        loadbuffer = (unsigned char*)0x00A00000;
+        ret = load_minifs_file("creativeos.jrm", loadbuffer);
+        if(ret != -1)
+        {
+        	set_irq_level(IRQ_DISABLED);
+            set_fiq_status(FIQ_DISABLED);
+            /* Doesn't return! */
+            load_fw(loadbuffer, ret);
+        }
+        else
+            printf("FAILED!");
+    }
+    else
+    {
+        disk_init();
+
+        ret = disk_mount_all();
+        if (ret <= 0)
+            error(EDISK, ret);
+
+        printf("Loading Rockbox firmware...");
+
+        loadbuffer = (unsigned char*)0x00900000;
+        buffer_size = (unsigned char*)0x01900000 - loadbuffer;
+
+        ret = load_firmware(loadbuffer, BOOTFILE, buffer_size);
+        if(ret < 0)
+            error(EBOOTFILE, ret);
+
+        else if(ret == EOK)
+        {
+            kernel_entry = (void*) loadbuffer;
+            ret = kernel_entry();
+            printf("FAILED!");
+        }
+    }
+
+    while(1);
+}

docs/CREDITS

@@ -412,6 +412,7 @@ Jun Gu
 Daniel Weck
 Clément Pit-Claudel
 Jelle Geerts
+Tadeusz Pyś
 
 The libmad team
 The wavpack team

firmware/export/config-creativezvm.h

@@ -166,11 +166,11 @@
 #define USB_PRODUCT_ID 0x4133
 
 /*DEBUGGING!*/
-#ifdef BOOTLOADER
+/*
 #define THREAD_EXTRA_CHECKS 1
 #define DEBUG 1
 #define debug(msg) printf(msg)
 #define BUTTON_DEBUG
-#endif
+*/
 
 #endif

firmware/target/arm/tms320dm320/boot.lds

@@ -7,7 +7,7 @@ STARTUP(target/arm/tms320dm320/crt0.o)
 
 #define DRAMSIZE (MEMORYSIZE * 0x100000)
 
-#define DRAMORIG 0x00900000
+#define DRAMORIG 0x01900000 /* actually it's 0x00900000 */
 #define IRAMORIG 0x00000000
 #define IRAMSIZE 16K
 #define FLASHORIG 0x00100000
@@ -22,7 +22,7 @@ MEMORY
 
 SECTIONS
 {
-    . = DRAMORIG + 0x1000000;
+    . = DRAMORIG;
 
     .text : {
         loadaddress = .;

firmware/target/arm/tms320dm320/creative-zvm/ata-creativezvm.c

@@ -28,6 +28,8 @@
 #include "panic.h"
 #include "ata-target.h"
 #include "dm320.h"
+#include "ata.h"
+#include "string.h"
 
 void sleep_ms(int ms)
 {
@@ -109,3 +111,106 @@ void GIO2(void)
     IO_INTC_IRQ1 = INTR_IRQ1_EXT2; /* Mask GIO2 interrupt */
     return;
 }
+
+/*
+ ---------------------------------------------------------------------------
+ Creative File Systems parsing code
+ ---------------------------------------------------------------------------
+ */
+
+struct main_header
+{
+    char mblk[4];
+    unsigned char sector_size[4];
+    unsigned char disk_size[8];
+    struct partition_header
+    {
+        unsigned char end[4];
+        unsigned char start[4];
+        char name[8];
+    } partitions[31];
+};
+
+struct minifs_file
+{
+    char name[0x10];
+    unsigned char unk[4];
+    unsigned char size[4];
+    unsigned char chain1[4];
+    unsigned char chain2[4];
+};
+
+struct minifs_chain
+{
+    unsigned char unknown[4];
+    unsigned char chain[2*0x27FE];
+    unsigned char unknown2[4];
+    unsigned char length[4];
+};
+
+
+#define DIR_BITMAP_START       0x0143
+#define DIR_START              0x0144
+#define DATASPACE_BITMAP_START 0x0145
+#define DATASPACE_START        0x0146
+
+#define CLUSTER_CHAIN_SIZE     0x5008
+#define CLUSTER_CHAIN_HEAD     0x0000
+#define CLUSTER_CHAIN_BITMAP   0x0001
+#define CLUSTER_CHAIN_CHAIN    0x0002
+
+
+static unsigned short le2int16(unsigned char* buf)
+{
+   return (buf[1] << 8) | buf[0];
+}
+
+static unsigned int le2int32(unsigned char* buf)
+{
+   return (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
+}
+
+int load_minifs_file(char* filename, unsigned char* location)
+{
+    struct main_header *hdr;
+    static struct minifs_file files[128];
+    struct minifs_chain *chain;
+    unsigned int i;
+    int found = -1;
+    unsigned char sector[512];
+    static unsigned char chain_data[42*512]; /* stack overflow if not static */
+
+    /* Reading MBLK */
+    ata_read_sectors(0, 1, &sector);
+    hdr = (struct main_header*)&sector;
+
+    /* Reading directory listing */
+#define CLUSTER2SECTOR(x) ( (le2int32(hdr->partitions[0].start) + (x)*8) )
+    ata_read_sectors(CLUSTER2SECTOR(DIR_START), 8, &files);
+
+    for(i=0; i<127; i++)
+    {
+        if(strcmp(files[i].name, filename) == 0)
+            found = i;
+    }
+
+    if(found == -1)
+        return -1;
+
+#define GET_CHAIN(x)   ( CLUSTER2SECTOR(CLUSTER_CHAIN_CHAIN)*512 + (x)*CLUSTER_CHAIN_SIZE )
+#define FILE2SECTOR(x) ( CLUSTER2SECTOR(DATASPACE_START + (x)) )
+
+    /* Reading chain list */
+    ata_read_sectors(GET_CHAIN(le2int32(files[found].chain1))/512, 41, &chain_data[0]);
+
+    chain = (struct minifs_chain*)&chain_data[GET_CHAIN(le2int32(files[found].chain1))%512];
+
+    /* Copying data */
+    for(i=0; i<le2int32(chain->length); i++)
+    {
+        ata_read_sectors(FILE2SECTOR(le2int16(&chain->chain[i*2])), 8, location);
+        location += 0x1000;
+    }
+
+    return le2int32(files[found].size);
+}

firmware/target/arm/tms320dm320/creative-zvm/ata-target.h

@@ -74,5 +74,6 @@ void ata_reset(void);
 void ata_device_init(void);
 bool ata_is_coldstart(void);
 void ide_power_enable(bool on);
+int load_minifs_file(char* filename, unsigned char* location);
 
 #endif

tools/Makefile

@@ -13,7 +13,7 @@ LDFLAGS := -g
 
 CLEANALL := scramble descramble iriver sh2d bmp2rb rdf2binary convbdf	\
  generate_rocklatin mkboot ipod_fw codepages uclpack mi4 gigabeat database \
- lngdump telechips gigabeats creative hmac-sha1 mktccboot mknkboot rbspeexenc
+ lngdump telechips gigabeats creative hmac-sha1 mktccboot mknkboot rbspeexenc mkzenboot
 
 all:
 	@echo "Run make in your build directory!"
@@ -51,6 +51,12 @@ mktccboot: mktccboot.c telechips.o
 mknkboot: mknkboot.c
 	$(SILENT)$(CC) $(CFLAGS) $+ -o $@
 
+mkzenboot.o: mkzenboot.c
+	$(SILENT)$(CC) $(CFLAGS) -DSTANDALONE -c -o $@ $+
+
+mkzenboot: mkzenboot.o hmac-sha1.o
+	$(SILENT)$(CC) $(LDFLAGS) -lz $+ -o $@
+
 lngdump: lngdump.c
 	$(SILENT)$(CC) $(CFLAGS) $+ -o $@