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rockbox/bootloader/gigabeat.c
Greg White 3b65fc2480 Read bootsplash from disk rather than hardcoding it 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12050 a1c6a512-1295-4272-9138-f99709370657
2007-01-17 18:31:40 +00:00

324 lines
8 KiB
C
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#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.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 "panic.h"
#include "power.h"
#include "file.h"
#include "button-target.h"
extern void map_memory(void);
int line = 0;
char version[] = APPSVERSION;
static void go_usb_mode(void)
{
/* Drop into USB mode. This does not check for disconnection. */
int i;
GPBDAT &= 0x7EF;
GPBCON |= 1<<8;
GPGDAT &= 0xE7FF;
GPGDAT |= 1<<11;
for(i = 0; i < 10000000; i++) {
continue;
}
GPBCON &= 0x2FFCFF;
GPBDAT |= 1<<5;
GPBDAT |= 1<<6;
}
/* Restores a factory kernel/bootloader from a known location */
/* Restores the FWIMG01.DAT file back in the case of a bootloader failure */
/* The factory or "good" bootloader must be in /GBSYSTEM/FWIMG/FWIMG01.DAT.ORIG */
/* Returns non-zero on failure */
int restore_fwimg01dat(void)
{
int orig_file = 0, dest_file = 0;
int size = 0, size_read;
static char buf[4096];
char lcd_buf[64];
orig_file = open("/GBSYSTEM/FWIMG/FWIMG01.DAT.ORIG", O_RDONLY);
if(orig_file < 0) {
/* Couldn't open source file */
lcd_puts(0, line++, "Couldn't open FWIMG01.DAT.ORIG for reading");
lcd_update();
return(1);
}
lcd_puts(0, line++, "FWIMG01.DAT.ORIG opened for reading");
lcd_update();
dest_file = open("/GBSYSTEM/FWIMG/FWIMG01.DAT", O_RDWR);
if(dest_file < 0) {
/* Couldn't open destination file */
lcd_puts(0, line++, "Couldn't open FWIMG01.DAT.ORIG for writing");
lcd_update();
close(orig_file);
return(2);
}
lcd_puts(0, line++, "FWIMG01.DAT opened for writing");
lcd_update();
do {
/* Copy in chunks */
size_read = read(orig_file, buf, sizeof(buf));
if(size_read != write(dest_file, buf, size_read)) {
close(orig_file);
close(dest_file);
return(3);
}
size += size_read;
} while(size_read > 0);
close(orig_file);
close(dest_file);
snprintf(lcd_buf, sizeof(lcd_buf), "Finished copying %ld bytes from", size);
lcd_puts(0, line++, lcd_buf);
lcd_puts(0, line++, "FWIMG01.DAT.ORIG to FWIMG01.DAT");
return(0);
}
int load_rockbox(const char* file_name, unsigned char* buf, int buffer_size)
{
int fd;
int rc;
int len;
char str[256];
fd = open("/.rockbox/" BOOTFILE, O_RDONLY);
if(fd < 0) {
fd = open("/" BOOTFILE, O_RDONLY);
if(fd < 0)
return -1;
}
fd = open(file_name, O_RDONLY);
if(fd < 0)
return -2;
len = filesize(fd);
if(len > buffer_size) {
snprintf(str, sizeof(str), "len: %d buf: %d", len, buffer_size);
lcd_puts(0, line++, str);
lcd_update();
return -6;
}
rc = read(fd, buf, len);
if(rc < len) {
snprintf(str, sizeof(str), "len: %d rc: %d", len, rc);
lcd_puts(0, line++, str);
lcd_update();
return -4;
}
close(fd);
return len;
}
char buf[256];
void display_instructions(void)
{
lcd_setfont(FONT_SYSFIXED);
lcd_puts(0, line++, "Hold MENU when booting for rescue mode.");
lcd_puts(0, line++, " \"VOL+\" button to restore original kernel");
lcd_puts(0, line++, " \"A\" button to load original firmware");
line++;
snprintf(buf, sizeof(buf), "FRAME %x TTB %x", FRAME, TTB_BASE);
lcd_puts(0, line++, buf);
lcd_update();
}
void * main(void)
{
int i;
struct partinfo* pinfo;
unsigned short* identify_info;
unsigned char* loadbuffer;
int buffer_size;
bool load_original = false;
int rc;
int(*kernel_entry)(void);
bool show_bootsplash = true;
if(GPGDAT & 2)
show_bootsplash = false;
if(!show_bootsplash) {
lcd_init();
display_instructions();
sleep(2*HZ);
}
if(GPGDAT & 2) {
lcd_init();
lcd_puts(0, line++, "Entering rescue mode..");
lcd_update();
go_usb_mode();
while(1);
}
if(GPGDAT & 0x10) {
lcd_init();
load_original = true;
lcd_puts(0, line++, "Loading original firmware...");
lcd_update();
}
i = ata_init();
i = disk_mount_all();
if(!show_bootsplash) {
snprintf(buf, sizeof(buf), "disk_mount_all: %d", i);
lcd_puts(0, line++, buf);
}
if(show_bootsplash) {
int fd = open("/bootsplash.raw", O_RDONLY);
if(fd < 0) {
show_bootsplash = false;
lcd_init();
display_instructions();
}
else {
read(fd, lcd_framebuffer, LCD_WIDTH*LCD_HEIGHT*2);
close(fd);
lcd_update();
lcd_init();
}
}
/* hold VOL+ to enter rescue mode to copy old image */
/* needs to be after ata_init and disk_mount_all */
if(GPGDAT & 4) {
/* Try to restore the original kernel/bootloader if a copy is found */
lcd_puts(0, line++, "Restoring FWIMG01.DAT...");
lcd_update();
if(!restore_fwimg01dat()) {
lcd_puts(0, line++, "Restoring FWIMG01.DAT successful.");
} else {
lcd_puts(0, line++, "Restoring FWIMG01.DAT failed.");
}
lcd_puts(0, line++, "Now power cycle to boot original");
lcd_update();
while(1);
}
if(!show_bootsplash) {
identify_info = ata_get_identify();
for(i=0; i < 20; i++)
((unsigned short*)buf)[i]=htobe16(identify_info[i+27]);
buf[40]=0;
/* kill trailing space */
for(i=39; i && buf[i]==' '; i--)
buf[i] = 0;
lcd_puts(0, line++, "Model");
lcd_puts(0, line++, buf);
for(i=0; i < 4; i++)
((unsigned short*)buf)[i]=htobe16(identify_info[i+23]);
buf[8]=0;
lcd_puts(0, line++, "Firmware");
lcd_puts(0, line++, buf);
pinfo = disk_partinfo(0);
snprintf(buf, sizeof(buf), "Partition 0: 0x%02x %ld MB",
pinfo->type, pinfo->size / 2048);
lcd_puts(0, line++, buf);
lcd_update();
}
/* Load original firmware */
if(load_original) {
loadbuffer = (unsigned char*)0x30008000;
buffer_size =(unsigned char*)0x31000000 - loadbuffer;
rc = load_rockbox("/rockbox.gigabeat", loadbuffer, buffer_size);
if(rc < 0) {
lcd_puts(0, line++, "failed to load original firmware. Loading rockbox");
lcd_update();
sleep(2*HZ);
goto load_rockbox;
}
snprintf(buf, sizeof(buf), "Loaded: %d", rc);
lcd_puts(0, line++, buf);
lcd_update();
sleep(2*HZ);
(*((int*)0x7000000)) = 333;
rc = *((int*)0x7000000+0x8000000);
snprintf(buf, sizeof(buf), "Bank0 mem test: %d", rc);
lcd_puts(0, line++, buf);
lcd_update();
sleep(3*HZ);
lcd_puts(0, line++, "Woops, should not return from firmware!");
lcd_update();
goto usb;
}
load_rockbox:
map_memory();
if(!show_bootsplash) {
lcd_puts(0, line, "Loading Rockbox...");
lcd_update();
}
loadbuffer = (unsigned char*) 0x100;
buffer_size = (unsigned char*)0x400000 - loadbuffer;
rc=load_rockbox("/rockbox.gigabeat", loadbuffer, buffer_size);
if(rc < 0) {
snprintf(buf, sizeof(buf), "Rockbox error: %d",rc);
lcd_puts(0, line++, buf);
lcd_update();
} else {
if(!show_bootsplash) {
lcd_puts(0, line++, "Rockbox loaded.");
lcd_update();
}
kernel_entry = (void*) loadbuffer;
rc = kernel_entry();
snprintf(buf, sizeof(buf), "Woops, should not return from firmware: %d", rc);
lcd_puts(0, line++, buf);
lcd_update();
goto usb;
}
usb:
/* now wait in USB mode so the bootloader can be updated */
go_usb_mode();
while(1);
return((void *)0);
}
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