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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2016 by Roman Stolyarov
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "jz4760b.h"
#include "../kernel-internal.h"
#include "backlight.h"
#include "font.h"
#include "lcd.h"
#include "file.h"
#ifdef HAVE_BOOTLOADER_USB_MODE
#include "usb.h"
#endif
#include "system.h"
#include "button.h"
#include "common.h"
#include "rb-loader.h"
#include "loader_strerror.h"
#include "storage.h"
#include "file_internal.h"
#include "disk.h"
#include "string.h"
#include "adc.h"
#include "version.h"
#include "xdebug.h"
#define SHOW_LOGO
extern void show_logo(void);
extern void power_off(void);
static int lcd_inited = 0;
void init_lcd(void)
{
if(lcd_inited)
return;
lcd_init();
font_init();
lcd_setfont(FONT_SYSFIXED);
lcd_clear_display();
lcd_update();
backlight_init();
lcd_inited = true;
}
#ifdef HAVE_BOOTLOADER_USB_MODE
static void show_splash(int timeout, const char *msg)
{
init_lcd();
reset_screen();
lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
(LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
lcd_update();
sleep(timeout);
}
static int usb_inited = 0;
static void usb_mode(void)
{
int button = 0;
/* Init USB, but only once */
if (!usb_inited) {
usb_init();
usb_start_monitoring();
usb_inited = 1;
}
init_lcd();
reset_screen();
/* Wait for USB */
show_splash(0, "Waiting for USB");
while(1) {
button = button_get_w_tmo(HZ/2);
if (button == BUTTON_POWER)
return;
if (button == SYS_USB_CONNECTED)
break; /* Hit */
}
/* Got the message - wait for disconnect */
show_splash(0, "Bootloader USB mode");
usb_acknowledge(SYS_USB_CONNECTED_ACK);
while(1) {
button = button_get_w_tmo(HZ/2);
if (button == SYS_USB_DISCONNECTED)
break;
}
show_splash(HZ*2, "USB disconnected");
}
#endif
/* Jump to loaded binary */
void exec(void* addr) __attribute__((noinline, noreturn, section(".icode")));
void exec(void* addr)
{
commit_discard_idcache();
typedef void(*entry_fn)(void) __attribute__((noreturn));
entry_fn fn = (entry_fn)addr;
fn();
}
static int boot_rockbox(void)
{
int rc;
printf("Mounting disk...");
while((rc = disk_mount_all()) <= 0) {
verbose = true;
#ifdef HAVE_BOOTLOADER_USB_MODE
error(EDISK, rc, false);
usb_mode();
#else
error(EDISK, rc, true);
#endif
}
printf("Loading firmware...");
rc = load_firmware((unsigned char *)CONFIG_SDRAM_START, BOOTFILE, 0x400000);
if(rc <= EFILE_EMPTY) {
printf("!! " BOOTFILE);
return rc;
} else {
printf("Starting Rockbox...");
adc_close(); /* Disable SADC, seems to fix the re-init Rockbox does */
disable_interrupt();
exec((void*) CONFIG_SDRAM_START);
return 0; /* Shouldn't happen */
}
}
#if 0
static void reset_configuration(void)
{
int rc;
rc = disk_mount_all();
if (rc <= 0)
{
verbose = true;
error(EDISK,rc, true);
}
if(rename(ROCKBOX_DIR "/config.cfg", ROCKBOX_DIR "/config.old") == 0)
show_splash(HZ/2, "Configuration reset successfully!");
else
show_splash(HZ/2, "Couldn't reset configuration!");
}
#endif
int main(void)
{
int rc;
serial_puts("\n\nSPL Stage 2\n\n");
system_init();
kernel_init();
init_lcd();
#ifdef SHOW_LOGO
show_logo();
#endif
button_init();
enable_irq();
int btn = button_read_device();
if(btn & BUTTON_POWER) {
verbose = true;
}
rc = storage_init();
if(rc) {
verbose = true;
error(EATA, rc, true);
}
filesystem_init();
#ifdef HAVE_BOOTLOADER_USB_MODE
/* Enter USB mode if USB is plugged and POWER button is pressed */
if (btn & BUTTON_POWER) {
usb_mode();
reset_screen();
}
#endif /* HAVE_BOOTLOADER_USB_MODE */
#ifndef SHOW_LOGO
printf(MODEL_NAME" Rockbox Bootloader");
printf("Version %s", rbversion);
#endif
rc = boot_rockbox();
if(rc <= EFILE_EMPTY) {
verbose = true;
printf("Error: %s", loader_strerror(rc));
}
/* Power off */
sleep(5*HZ);
power_off();
return 0;
}
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