forked from len0rd/rockbox
6db80020b4
Many includes of fat.h are pointless. Some includes are just for SECTOR_SIZE. Add a file 'firmware/include/fs_defines.h' for that and to define tuneable values that were scattered amongst various headers. Remove some local definitions of SECTOR_SIZE since they have to be in agreement with the rest of the fs code anyway. (We'll see what's in fact pointless in a moment ;) Change-Id: I9ba183bf58bd87f5c45eba7bd675c7e2c1c18ed5
437 lines
13 KiB
C
437 lines
13 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2005 by Dave Chapman
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*
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* Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
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* and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include "cpu.h"
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#include "system.h"
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#include "lcd.h"
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#include "../kernel-internal.h"
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#include "ata.h"
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#include "file_internal.h"
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#include "disk.h"
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#include "font.h"
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#include "adc.h"
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#include "backlight.h"
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#include "panic.h"
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#include "power.h"
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#include "file.h"
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#include "common.h"
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#include "rb-loader.h"
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#include "loader_strerror.h"
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#include "hwcompat.h"
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#include "usb.h"
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#include "version.h"
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#define XSC(X) #X
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#define SC(X) XSC(X)
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/* Maximum allowed firmware image size. The largest known current
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(December 2006) firmware is about 7.5MB (Apple's firmware for the ipod video)
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so we set this to 8MB. */
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#define MAX_LOADSIZE (8*1024*1024)
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/* A buffer to load the Linux kernel or Rockbox into */
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unsigned char *loadbuffer = (unsigned char *)DRAM_START;
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#if CONFIG_KEYPAD == IPOD_4G_PAD && !defined(IPOD_MINI)
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/* check if number of seconds has past */
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int timer_check(int clock_start, unsigned int usecs)
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{
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if ((USEC_TIMER - clock_start) >= usecs) {
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return 1;
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} else {
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return 0;
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}
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}
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static void ser_opto_keypad_cfg(int val)
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{
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int start_time;
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GPIOB_ENABLE &=~ 0x80;
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outl(inl(0x7000c104) | 0xc000000, 0x7000c104);
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outl(val, 0x7000c120);
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outl(inl(0x7000c100) | 0x80000000, 0x7000c100);
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GPIOB_OUTPUT_VAL &=~ 0x10;
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GPIOB_OUTPUT_EN |= 0x10;
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start_time = USEC_TIMER;
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do {
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if ((inl(0x7000c104) & 0x80000000) == 0) {
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break;
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}
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} while (timer_check(start_time, 1500) != 0);
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outl(inl(0x7000c100) & ~0x80000000, 0x7000c100);
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GPIOB_ENABLE |= 0x80;
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GPIOB_OUTPUT_VAL |= 0x10;
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GPIOB_OUTPUT_EN &=~0x10;
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outl(inl(0x7000c104) | 0xc000000, 0x7000c104);
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outl(inl(0x7000c100) | 0x60000000, 0x7000c100);
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}
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int opto_keypad_read(void)
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{
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int loop_cnt, had_io = 0;
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for (loop_cnt = 5; loop_cnt != 0;)
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{
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int key_pressed = 0;
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int start_time;
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unsigned int key_pad_val;
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ser_opto_keypad_cfg(0x8000023a);
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start_time = USEC_TIMER;
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do {
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if (inl(0x7000c104) & 0x4000000) {
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had_io = 1;
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break;
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}
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if (had_io != 0) {
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break;
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}
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} while (timer_check(start_time, 1500) != 0);
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key_pad_val = inl(0x7000c140);
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if ((key_pad_val & ~0x7fff0000) != 0x8000023a) {
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loop_cnt--;
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} else {
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key_pad_val = (key_pad_val << 11) >> 27;
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key_pressed = 1;
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}
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outl(inl(0x7000c100) | 0x60000000, 0x7000c100);
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outl(inl(0x7000c104) | 0xc000000, 0x7000c104);
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if (key_pressed != 0) {
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return key_pad_val ^ 0x1f;
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}
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}
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return 0;
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}
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#endif
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static int key_pressed(void)
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{
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unsigned char state;
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#if CONFIG_KEYPAD == IPOD_4G_PAD
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#ifdef IPOD_MINI /* mini 1G only */
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state = GPIOA_INPUT_VAL & 0x3f;
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if ((state & 0x10) == 0) return BUTTON_LEFT;
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if ((state & 0x2) == 0) return BUTTON_MENU;
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if ((state & 0x4) == 0) return BUTTON_PLAY;
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if ((state & 0x8) == 0) return BUTTON_RIGHT;
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#else
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state = opto_keypad_read();
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if ((state & 0x4) == 0) return BUTTON_LEFT;
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if ((state & 0x10) == 0) return BUTTON_MENU;
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if ((state & 0x8) == 0) return BUTTON_PLAY;
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if ((state & 0x2) == 0) return BUTTON_RIGHT;
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#endif
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#elif (CONFIG_KEYPAD == IPOD_3G_PAD) || (CONFIG_KEYPAD == IPOD_1G2G_PAD)
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state = GPIOA_INPUT_VAL;
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if ((state & 0x08) == 0) return BUTTON_LEFT;
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if ((state & 0x10) == 0) return BUTTON_MENU;
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if ((state & 0x04) == 0) return BUTTON_PLAY;
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if ((state & 0x01) == 0) return BUTTON_RIGHT;
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#endif
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return 0;
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}
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bool button_hold(void)
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{
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#if CONFIG_KEYPAD == IPOD_1G2G_PAD
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return (GPIOA_INPUT_VAL & 0x20);
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#else
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return !(GPIOA_INPUT_VAL & 0x20);
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#endif
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}
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void fatal_error(void)
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{
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extern int line;
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bool holdstatus=false;
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/* System font is 6 pixels wide */
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#if defined(IPOD_1G2G) || defined(IPOD_3G)
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printf("Insert Firewire cable, or");
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printf("hold MENU+PLAY to reboot");
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printf("then REW+FF for disk mode");
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#elif LCD_WIDTH >= (30*6)
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printf("Insert USB cable, or");
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printf("hold MENU+SELECT to reboot");
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printf("then SELECT+PLAY for disk mode");
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#else
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printf("Insert USB cable, or");
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printf("hold MENU+SELECT to");
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printf("reboot then SELECT+PLAY");
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printf("for disk mode");
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#endif
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lcd_update();
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usb_init();
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while (1) {
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if (button_hold() != holdstatus) {
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if (button_hold()) {
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holdstatus=true;
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lcd_puts(0, line, "Hold switch on!");
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} else {
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holdstatus=false;
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lcd_puts(0, line, " ");
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}
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lcd_update();
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}
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if (usb_detect() == USB_INSERTED) {
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ata_sleepnow(); /* Immediately spindown the disk. */
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sleep(HZ*2);
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#if CONFIG_CPU == PP5020
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memcpy((void *)0x40017f00, "diskmode\0\0hotstuff\0\0\1", 21);
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#elif CONFIG_CPU == PP5022
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memcpy((void *)0x4001ff00, "diskmode\0\0hotstuff\0\0\1", 21);
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#elif CONFIG_CPU == PP5002
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memcpy((void *)0x40017f00, "diskmodehotstuff\1", 17);
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#endif /* CONFIG_CPU */
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system_reboot(); /* Reboot */
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}
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udelay(100000); /* 100ms */
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}
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}
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/* The bootloader is started from the OSOS image on the firmware
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* partition. There are several ways it can be installed there:
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* appended to the Apple firmware, on its own, or appended to
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* Rockbox itself. The Apple ROM loader loads the entire OSOS
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* image to DRAM_START, whatever it contains. If the bootloader
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* is appended to another image then it will've modified the
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* entry point in the OSOS header such that the ROM will call the
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* bootloader rather than the main image.
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*
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* So, once the bootloader has control:
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*
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* 1) If the hold switch is on, or the menu button is being held,
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* try to boot the Apple firmware.
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* 1a) First, it looks for apple_os.ipod on the FAT32 partition,
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* in .rockbox or the root directory. If found it loads that
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* without further checking and runs it.
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* 1b) Next, it checks to see if the OSOS image already loaded
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* into RAM is in fact the Apple firmware with the bootloader
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* appended. It looks at DRAM_START+0x20 for the string
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* "portalplayer", and if it's there, just jumps back to
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* DRAM_START where the entry point was before the bootloader
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* was appended.
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* 1c) If neither of those worked, it displays an error and dies.
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*
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* 2) If the play button is being held, try to boot Linux. It looks
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* for linux.bin in the root directory, and if it's not there,
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* it displays an error and dies.
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*
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* 3) Otherwise, try to boot Rockbox.
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* 3a) First, it looks for rockbox.ipod on the FAT32 partition,
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* in .rockbox or the root directory. If found it loads that
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* without further checking and runs it.
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* 3b) Next, it checks to see if the OSOS image already loaded
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* into RAM is in fact Rockbox with the bootloader appended.
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* It looks at DRAM_START+0x20 for the string "Rockbox\1"
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* (which is inserted there in crt0-pp.S), and if it's there,
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* just humps back to DRAM_START where the entry point was
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* before the bootloader was appended.
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* 3c) If neither of those worked, it displays an error and dies.
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*
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* The result is that any of the three install configurations work,
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* and that images of apple_os.ipod or rockbox.ipod on the FAT32
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* partition take priority over the contents of OSOS (this avoids
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* upgrades failing to work if OSOS is not updated).
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*
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* Loading from OSOS is somewhat faster than loading from FAT32,
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* because the Apple ROM doesn't have to deal with filesystems or
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* fragmentation, and is already loading from OSOS anyway. Thus,
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* the fastest boot configuration that still allows dual booting
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* is to install Rockbox into OSOS with the bootloader appended
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* (and delete/rename rockbox.ipod from the FAT32 partition).
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*
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* It is of course faster to just install Rockbox to OSOS alone,
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* but then it's impossible to boot the Apple firmware.
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*/
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void* main(void)
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{
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char buf[256];
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int i;
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int btn;
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int rc;
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bool haveramos;
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bool button_was_held;
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struct partinfo pinfo;
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unsigned short* identify_info;
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/* Check the button hold status as soon as possible - to
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give the user maximum chance to turn it off in order to
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reset the settings in rockbox. */
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button_was_held = button_hold();
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system_init();
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kernel_init();
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#ifndef HAVE_BACKLIGHT_INVERSION
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backlight_init(); /* Turns on the backlight */
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#endif
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lcd_init();
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font_init();
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#ifdef HAVE_LCD_COLOR
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lcd_set_foreground(LCD_WHITE);
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lcd_set_background(LCD_BLACK);
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lcd_clear_display();
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#endif
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#if 0
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/* ADC and button drivers are not yet implemented */
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adc_init();
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button_init();
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#endif
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btn=key_pressed();
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/* Enable bootloader messages */
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if (btn==BUTTON_RIGHT)
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verbose = true;
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lcd_setfont(FONT_SYSFIXED);
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printf("Rockbox boot loader");
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printf("Version: %s", rbversion);
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printf("IPOD version: 0x%08x", IPOD_HW_REVISION);
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i=ata_init();
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if (i==0) {
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identify_info=ata_get_identify();
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/* Show model */
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for (i=0; i < 20; i++) {
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((unsigned short*)buf)[i]=htobe16(identify_info[i+27]);
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}
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buf[40]=0;
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for (i=39; i && buf[i]==' '; i--) {
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buf[i]=0;
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}
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printf(buf);
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} else {
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printf("ATA: %d", i);
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}
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filesystem_init();
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rc = disk_mount_all();
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if (rc<=0)
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{
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printf("No partition found");
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fatal_error();
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}
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disk_partinfo(1, &pinfo);
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printf("Partition 1: 0x%02x %ld sectors",
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pinfo.type, pinfo.size);
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if (button_was_held || (btn==BUTTON_MENU)) {
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/* If either the hold switch was on, or the Menu button was held, then
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try the Apple firmware */
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printf("Loading original firmware...");
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/* First try an apple_os.ipod file on the FAT32 partition
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(either in .rockbox or the root)
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*/
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rc=load_firmware(loadbuffer, "apple_os.ipod", MAX_LOADSIZE);
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if (rc > 0) {
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printf("apple_os.ipod loaded.");
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return (void*)DRAM_START;
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} else if (rc == EFILE_NOT_FOUND) {
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/* If apple_os.ipod doesn't exist, then check if there is an Apple
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firmware image in RAM */
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haveramos = (memcmp((void*)(DRAM_START+0x20),"portalplayer",12)==0);
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if (haveramos) {
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/* We have a copy of the retailos in RAM, lets just run it. */
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return (void*)DRAM_START;
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}
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} else {
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printf("Error!");
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printf("Can't load apple_os.ipod:");
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printf(loader_strerror(rc));
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}
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/* Everything failed - just loop forever */
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printf("No RetailOS detected");
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} else if (btn==BUTTON_PLAY) {
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printf("Loading Linux...");
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rc=load_raw_firmware(loadbuffer, "/linux.bin", MAX_LOADSIZE);
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if (rc <= EFILE_EMPTY) {
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printf("Error!");
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printf("Can't load linux.bin:");
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printf(loader_strerror(rc));
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} else {
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return (void*)DRAM_START;
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}
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} else {
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printf("Loading Rockbox...");
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rc=load_firmware(loadbuffer, BOOTFILE, MAX_LOADSIZE);
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if (rc > 0) {
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printf("Rockbox loaded.");
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return (void*)DRAM_START;
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} else if (rc == EFILE_NOT_FOUND) {
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/* if rockbox.ipod doesn't exist, then check if there is a Rockbox
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image in RAM */
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haveramos = (memcmp((void*)(DRAM_START+0x20),"Rockbox\1",8)==0);
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if (haveramos) {
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/* We have a copy of Rockbox in RAM, lets just run it. */
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return (void*)DRAM_START;
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}
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}
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printf("Error!");
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printf("Can't load " BOOTFILE ": ");
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printf(loader_strerror(rc));
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}
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/* If we get to here, then we haven't been able to load any firmware */
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fatal_error();
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/* We never get here, but keep gcc happy */
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return (void*)0;
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}
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