| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2005 by Linus Nielsen Feltzing |
| * |
| * 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 "disk.h" |
| #include "font.h" |
| #include "adc.h" |
| #include "backlight.h" |
| #include "button.h" |
| #include "panic.h" |
| #include "power.h" |
| #include "file.h" |
| #include "uda1380.h" |
| |
| #define DRAM_START 0x31000000 |
| |
| int line = 0; |
| |
| int usb_screen(void) |
| { |
| return 0; |
| } |
| |
| char version[] = APPSVERSION; |
| |
| static void usb_enable(bool on) |
| { |
| and_l(~0x01000000, &GPIO_OUT); /* GPIO24 is the Cypress chip power */ |
| or_l(0x01000000, &GPIO_ENABLE); |
| or_l(0x01000000, &GPIO_FUNCTION); |
| |
| or_l(0x00000080, &GPIO1_FUNCTION); /* GPIO39 is the USB detect input */ |
| |
| if(on) |
| { |
| /* Power on the Cypress chip */ |
| or_l(0x01000000, &GPIO_OUT); |
| sleep(2); |
| } |
| else |
| { |
| /* Power off the Cypress chip */ |
| and_l(~0x01000000, &GPIO_OUT); |
| } |
| } |
| |
| bool usb_detect(void) |
| { |
| return (GPIO1_READ & 0x80)?true:false; |
| } |
| |
| void start_iriver_fw(void) |
| { |
| asm(" move.w #0x2700,%sr"); |
| /* Reset the cookie for the crt0 crash check */ |
| asm(" move.l #0,%d0"); |
| asm(" move.l %d0,0x10017ffc"); |
| asm(" movec.l %d0,%vbr"); |
| asm(" move.l 0,%sp"); |
| asm(" lea.l 8,%a0"); |
| asm(" jmp (%a0)"); |
| } |
| |
| 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.iriver", 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 start_firmware(void) |
| { |
| asm(" move.w #0x2700,%sr"); |
| /* Reset the cookie for the crt0 crash check */ |
| asm(" move.l #0,%d0"); |
| asm(" move.l %d0,0x10017ffc"); |
| asm(" move.l %0,%%d0" :: "i"(DRAM_START)); |
| asm(" movec.l %d0,%vbr"); |
| asm(" move.l %0,%%sp" :: "m"(*(int *)DRAM_START)); |
| asm(" move.l %0,%%a0" :: "m"(*(int *)(DRAM_START+4))); |
| asm(" jmp (%a0)"); |
| } |
| |
| void main(void) |
| { |
| int i; |
| int rc; |
| char buf[256]; |
| bool rc_on_button = false; |
| bool on_button = false; |
| int data; |
| int adc_battery, battery_voltage, batt_int, batt_frac; |
| |
| /* We want to read the buttons as early as possible, before the user |
| releases the ON button */ |
| |
| /* Set GPIO33, GPIO37, GPIO38 and GPIO52 as general purpose inputs |
| (The ON and Hold buttons on the main unit and the remote) */ |
| or_l(0x00100062, &GPIO1_FUNCTION); |
| and_l(~0x00100062, &GPIO1_ENABLE); |
| |
| data = GPIO1_READ; |
| if ((data & 0x20) == 0) |
| on_button = true; |
| |
| if ((data & 0x40) == 0) |
| rc_on_button = true; |
| |
| /* Backlight ON */ |
| or_l(0x00020000, &GPIO1_ENABLE); |
| or_l(0x00020000, &GPIO1_FUNCTION); |
| |
| /* Set the default state of the hard drive power to OFF */ |
| ide_power_enable(false); |
| |
| power_init(); |
| |
| /* Power on the hard drive early, to speed up the loading */ |
| if(!((on_button && button_hold()) || |
| (rc_on_button && remote_button_hold()))) { |
| ide_power_enable(true); |
| } |
| |
| system_init(); |
| kernel_init(); |
| |
| #ifdef HAVE_ADJUSTABLE_CPU_FREQ |
| /* Set up waitstates for the peripherals */ |
| set_cpu_frequency(0); /* PLL off */ |
| #endif |
| |
| uda1380_reset(); |
| |
| backlight_init(); |
| set_irq_level(0); |
| lcd_init(); |
| font_init(); |
| adc_init(); |
| button_init(); |
| |
| lcd_setfont(FONT_SYSFIXED); |
| |
| lcd_puts(0, line++, "Rockbox boot loader"); |
| snprintf(buf, sizeof(buf), "Version %s", version); |
| lcd_puts(0, line++, buf); |
| lcd_update(); |
| |
| sleep(HZ/50); /* Allow the button driver to check the buttons */ |
| |
| /* Holding REC while starting runs the original firmware */ |
| if(((button_status() & BUTTON_REC) == BUTTON_REC) || |
| ((button_status() & BUTTON_RC_REC) == BUTTON_RC_REC)) { |
| lcd_puts(0, 8, "Starting original firmware..."); |
| lcd_update(); |
| start_iriver_fw(); |
| } |
| |
| /* Don't start if the Hold button is active on the device you |
| are starting with */ |
| if((on_button && button_hold()) || |
| (rc_on_button && remote_button_hold())) { |
| lcd_puts(0, 8, "HOLD switch on, power off..."); |
| lcd_update(); |
| sleep(HZ*2); |
| /* Reset the cookie for the crt0 crash check */ |
| asm(" move.l #0,%d0"); |
| asm(" move.l %d0,0x10017ffc"); |
| power_off(); |
| } |
| |
| adc_battery = adc_read(ADC_BATTERY); |
| |
| battery_voltage = (adc_battery * BATTERY_SCALE_FACTOR) / 10000; |
| batt_int = battery_voltage / 100; |
| batt_frac = battery_voltage % 100; |
| |
| snprintf(buf, 32, "Batt: %d.%02dV", batt_int, batt_frac); |
| lcd_puts(0, line++, buf); |
| lcd_update(); |
| |
| if(battery_voltage <= 300) { |
| line++; |
| lcd_puts(0, line++, "WARNING! BATTERY LOW!!"); |
| lcd_update(); |
| sleep(HZ*2); |
| } |
| |
| rc = ata_init(); |
| if(rc) |
| { |
| char str[32]; |
| lcd_clear_display(); |
| snprintf(str, 31, "ATA error: %d", rc); |
| lcd_puts(0, line++, str); |
| lcd_puts(0, line++, "Insert USB cable and press"); |
| lcd_puts(0, line++, "a button"); |
| lcd_update(); |
| while(!(button_get(true) & BUTTON_REL)); |
| } |
| |
| /* A hack to enter USB mode without using the USB thread */ |
| if(usb_detect()) |
| { |
| lcd_clear_display(); |
| lcd_puts(0, 7, " Bootloader USB mode"); |
| lcd_update(); |
| |
| ata_spin(); |
| ata_enable(false); |
| usb_enable(true); |
| while(usb_detect()) |
| { |
| ata_spin(); /* Prevent the drive from spinning down */ |
| sleep(HZ); |
| |
| /* Backlight OFF */ |
| or_l(0x00020000, &GPIO1_OUT); |
| } |
| |
| usb_enable(false); |
| ata_init(); /* Reinitialize ATA and continue booting */ |
| |
| lcd_clear_display(); |
| line = 0; |
| lcd_update(); |
| } |
| |
| disk_init(); |
| |
| rc = disk_mount_all(); |
| if (rc<=0) |
| { |
| lcd_clear_display(); |
| lcd_puts(0, 0, "No partition found"); |
| while(button_get(true) != SYS_USB_CONNECTED) {}; |
| } |
| |
| lcd_puts(0, line++, "Loading firmware"); |
| lcd_update(); |
| i = load_firmware(); |
| snprintf(buf, 256, "Result: %d", i); |
| lcd_puts(0, line++, buf); |
| lcd_update(); |
| |
| if(i == 0) |
| start_firmware(); |
| |
| start_iriver_fw(); |
| } |
| |
| /* 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) |
| { |
| } |