forked from len0rd/rockbox
Initial check-in of work-in-progress iPod bootloader. Current targets are iPod Color/Photo and iPod Nano.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7784 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Dave Chapman
parent
a8a8c9db44
commit
38e8fb65d8
6 changed files with 469 additions and 2 deletions
346
bootloader/ipod.c
Normal file
346
bootloader/ipod.c
Normal file
|
|
@ -0,0 +1,346 @@
|
|||
/***************************************************************************
|
||||
* __________ __ ___.
|
||||
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
||||
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
||||
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
||||
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
||||
* \/ \/ \/ \/ \/
|
||||
* $Id$
|
||||
*
|
||||
* Copyright (C) 2005 by Dave Chapman
|
||||
*
|
||||
* Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
|
||||
* and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
|
||||
*
|
||||
* 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 "config.h"
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include "cpu.h"
|
||||
#include "system.h"
|
||||
#include "lcd.h"
|
||||
#include "kernel.h"
|
||||
#include "thread.h"
|
||||
#include "ata.h"
|
||||
#include "fat.h"
|
||||
#include "disk.h"
|
||||
#include "font.h"
|
||||
#include "adc.h"
|
||||
#include "backlight.h"
|
||||
#include "button.h"
|
||||
#include "panic.h"
|
||||
#include "power.h"
|
||||
#include "file.h"
|
||||
|
||||
#define DRAM_START 0x10000000
|
||||
#define IPOD_PP5020_RTC 0x60005010
|
||||
|
||||
#define IPOD_HW_REVISION (*((volatile unsigned long*)(0x00002084)))
|
||||
|
||||
char version[] = APPSVERSION;
|
||||
|
||||
#include "rockbox-16bit.h"
|
||||
#include "ipodlinux-16bit.h"
|
||||
|
||||
typedef struct _image {
|
||||
unsigned type; /* '' */
|
||||
unsigned id; /* */
|
||||
unsigned pad1; /* 0000 0000 */
|
||||
unsigned devOffset; /* byte offset of start of image code */
|
||||
unsigned len; /* length in bytes of image */
|
||||
void *addr; /* load address */
|
||||
unsigned entryOffset; /* execution start within image */
|
||||
unsigned chksum; /* checksum for image */
|
||||
unsigned vers; /* image version */
|
||||
unsigned loadAddr; /* load address for image */
|
||||
} image_t;
|
||||
|
||||
extern image_t boot_table[];
|
||||
|
||||
int line=0;
|
||||
|
||||
static void memmove16(void *dest, const void *src, unsigned count)
|
||||
{
|
||||
struct bufstr {
|
||||
unsigned _buf[4];
|
||||
} *d, *s;
|
||||
|
||||
if (src >= dest) {
|
||||
count = (count + 15) >> 4;
|
||||
d = (struct bufstr *) dest;
|
||||
s = (struct bufstr *) src;
|
||||
while (count--)
|
||||
*d++ = *s++;
|
||||
} else {
|
||||
count = (count + 15) >> 4;
|
||||
d = (struct bufstr *)(dest + (count <<4));
|
||||
s = (struct bufstr *)(src + (count <<4));
|
||||
while (count--)
|
||||
*--d = *--s;
|
||||
}
|
||||
}
|
||||
|
||||
/* get current usec counter */
|
||||
int timer_get_current(void)
|
||||
{
|
||||
return inl(IPOD_PP5020_RTC);
|
||||
}
|
||||
|
||||
/* check if number of seconds has past */
|
||||
int timer_check(int clock_start, unsigned int usecs)
|
||||
{
|
||||
if ((inl(IPOD_PP5020_RTC) - clock_start) >= usecs) {
|
||||
return 1;
|
||||
} else {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* This isn't a sleep, but let's call it that. */
|
||||
int usleep(unsigned int usecs)
|
||||
{
|
||||
unsigned int start = inl(IPOD_PP5020_RTC);
|
||||
|
||||
while ((inl(IPOD_PP5020_RTC) - start) < usecs) {
|
||||
// empty
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int load_firmware(void)
|
||||
{
|
||||
int fd;
|
||||
int rc;
|
||||
int len;
|
||||
unsigned long chksum;
|
||||
char model[5];
|
||||
unsigned long sum;
|
||||
int i;
|
||||
unsigned char *buf = (unsigned char *)DRAM_START;
|
||||
char str[80];
|
||||
|
||||
fd = open("/rockbox.ipod", O_RDONLY);
|
||||
if(fd < 0)
|
||||
return -1;
|
||||
|
||||
len = filesize(fd) - 8;
|
||||
|
||||
snprintf(str, 80, "Length: %x", len);
|
||||
lcd_puts(0, line++, str);
|
||||
lcd_update();
|
||||
|
||||
lseek(fd, FIRMWARE_OFFSET_FILE_CRC, SEEK_SET);
|
||||
|
||||
rc = read(fd, &chksum, 4);
|
||||
if(rc < 4)
|
||||
return -2;
|
||||
|
||||
snprintf(str, 80, "Checksum: %x", chksum);
|
||||
lcd_puts(0, line++, str);
|
||||
lcd_update();
|
||||
|
||||
rc = read(fd, model, 4);
|
||||
if(rc < 4)
|
||||
return -3;
|
||||
|
||||
model[4] = 0;
|
||||
|
||||
snprintf(str, 80, "Model name: %s", model);
|
||||
lcd_puts(0, line++, str);
|
||||
lcd_update();
|
||||
|
||||
lseek(fd, FIRMWARE_OFFSET_FILE_DATA, SEEK_SET);
|
||||
|
||||
rc = read(fd, buf, len);
|
||||
if(rc < len)
|
||||
return -4;
|
||||
|
||||
close(fd);
|
||||
|
||||
sum = MODEL_NUMBER;
|
||||
|
||||
for(i = 0;i < len;i++) {
|
||||
sum += buf[i];
|
||||
}
|
||||
|
||||
snprintf(str, 80, "Sum: %x", sum);
|
||||
lcd_puts(0, line++, str);
|
||||
lcd_update();
|
||||
|
||||
if(sum != chksum)
|
||||
return -5;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void* main(void)
|
||||
{
|
||||
char buf[256];
|
||||
int imageno=0;
|
||||
int i;
|
||||
int rc;
|
||||
int padding = 0x4400;
|
||||
image_t *tblp = boot_table;
|
||||
void* entry;
|
||||
struct partinfo* pinfo;
|
||||
unsigned short* identify_info;
|
||||
|
||||
/* Turn on the backlight */
|
||||
|
||||
#if CONFIG_BACKLIGHT==BL_IPOD4G
|
||||
|
||||
/* brightness full */
|
||||
outl(0x80000000 | (0xff << 16), 0x7000a010);
|
||||
|
||||
/* set port B03 on
|
||||
outl(((0x100 | 1) << 3), 0x6000d824);
|
||||
|
||||
#elif CONFIG_BACKLIGHT==BL_IPODNANO
|
||||
|
||||
/* set port B03 on */
|
||||
outl(((0x100 | 1) << 3), 0x6000d824);
|
||||
|
||||
/* set port L07 on */
|
||||
outl(((0x100 | 1) << 7), 0x6000d12c);
|
||||
|
||||
#endif
|
||||
|
||||
system_init();
|
||||
kernel_init();
|
||||
lcd_init();
|
||||
font_init();
|
||||
|
||||
#if 0
|
||||
/* ADC and button drivers are not yet implemented */
|
||||
adc_init();
|
||||
button_init();
|
||||
#endif
|
||||
|
||||
/* Notes: iPod Color/Photo LCD is 220x176, Nano is 176x138 */
|
||||
|
||||
/* Display the 42x47 pixel iPodLinux logo */
|
||||
lcd_bitmap((unsigned char*)ipllogo, 20,6, 42,47);
|
||||
|
||||
/* Display the 100x31 pixel Rockbox logo */
|
||||
lcd_bitmap((unsigned char*)rockboxlogo, 74,16, 100,31);
|
||||
|
||||
line=7;
|
||||
|
||||
lcd_setfont(FONT_SYSFIXED);
|
||||
|
||||
lcd_puts(0, line++, "iPodLinux/Rockbox boot loader");
|
||||
snprintf(buf, sizeof(buf), "Version: 20%s", version);
|
||||
lcd_puts(0, line++, buf);
|
||||
snprintf(buf, sizeof(buf), "IPOD version: 0x%08x", IPOD_HW_REVISION);
|
||||
lcd_puts(0, line++, buf);
|
||||
lcd_update();
|
||||
|
||||
i=ata_init();
|
||||
if (i==0) {
|
||||
identify_info=ata_get_identify();
|
||||
/* Show model */
|
||||
for (i=0; i < 20; i++) {
|
||||
((unsigned short*)buf)[i]=htobe16(identify_info[i+27]);
|
||||
}
|
||||
buf[40]=0;
|
||||
for (i=39; i && buf[i]==' '; i--) {
|
||||
buf[i]=0;
|
||||
}
|
||||
lcd_puts(0, line++, buf);
|
||||
lcd_update();
|
||||
} else {
|
||||
snprintf(buf, sizeof(buf), "ATA: %d", i);
|
||||
lcd_puts(0, line++, buf);
|
||||
lcd_update();
|
||||
}
|
||||
|
||||
disk_init();
|
||||
rc = disk_mount_all();
|
||||
if (rc<=0)
|
||||
{
|
||||
lcd_puts(0, line++, "No partition found");
|
||||
lcd_update();
|
||||
// while(button_get(true) != SYS_USB_CONNECTED) {};
|
||||
}
|
||||
|
||||
pinfo = disk_partinfo(1);
|
||||
snprintf(buf, sizeof(buf), "Partition 1: 0x%02x %ld MB",
|
||||
pinfo->type, pinfo->size / 2048);
|
||||
lcd_puts(0, line++, buf);
|
||||
lcd_update();
|
||||
|
||||
#if 0
|
||||
/* The following code will load and run an ipodlinux kernel - we will
|
||||
enable it once the button driver is written and we can detect key
|
||||
presses */
|
||||
int fd=open("/linux.bin",O_RDONLY);
|
||||
if (fd >= 0) {
|
||||
i=filesize(fd);
|
||||
int n=read(fd,(void*)DRAM_START,i);
|
||||
if (n==i) {
|
||||
/* We return the entry point for the loaded kernel */
|
||||
return DRAM_START;
|
||||
} else {
|
||||
/* What do we do now? We may have overwritten the copy of the
|
||||
original firmware with our incomplete copy of the Linux
|
||||
kernel... */
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Pause for 5 seconds so we can see what's happened*/
|
||||
usleep(5000000);
|
||||
|
||||
/* If everything else failed, try the original firmware */
|
||||
lcd_puts(0, line, "Loading original firmware...");
|
||||
lcd_update();
|
||||
|
||||
entry = tblp->addr + tblp->entryOffset;
|
||||
if (imageno || ((int)tblp->addr & 0xffffff) != 0) {
|
||||
memmove16(tblp->addr, tblp->addr + tblp->devOffset - padding,
|
||||
tblp->len);
|
||||
}
|
||||
|
||||
/* Return the start address in loaded image */
|
||||
return entry;
|
||||
}
|
||||
|
||||
/* These functions are present in the firmware library, but we reimplement
|
||||
them here because the originals do a lot more than we want */
|
||||
|
||||
void reset_poweroff_timer(void)
|
||||
{
|
||||
}
|
||||
|
||||
void screen_dump(void)
|
||||
{
|
||||
}
|
||||
|
||||
int dbg_ports(void)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
void mpeg_stop(void)
|
||||
{
|
||||
}
|
||||
|
||||
void usb_acknowledge(void)
|
||||
{
|
||||
}
|
||||
|
||||
void usb_wait_for_disconnect(void)
|
||||
{
|
||||
}
|
||||
|
||||
void sys_poweroff(void)
|
||||
{
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue