mirror of
https://github.com/Rockbox/rockbox.git
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3a57f2f721
Most of the churn here occurs because 'filesize' is one of the redefined filesystem functions, but some of the structs used by the native FS code also include a 'filesize' member variable which gets renamed by the macro in some but not all source files. It's easier to rename 'filesize()' to 'ffilesize()' rather than try to clean up the macro mess or renaming the struct members. There is weirdness with root_realpath() which now breaks on native builds because it was assumed to be unprefixed there. dir_get_info() was unprefixed everywhere but this just seems inconsistent; make it follow the FS_PREFIX() convention too. Change-Id: Ic3700c6234ea45f32679c1a8429d70fdb8f4088a
381 lines
9.4 KiB
C
381 lines
9.4 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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*
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* Copyright (C) 2006 by Greg White
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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 "system.h"
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#include <stdio.h>
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#include <errno.h>
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#include "../kernel-internal.h"
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#include "gcc_extensions.h"
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#include "string.h"
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#include "adc.h"
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#include "powermgmt.h"
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#include "storage.h"
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#include "file_internal.h"
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#include "dir.h"
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#include "file.h"
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#include "disk.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 "power.h"
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#include "backlight.h"
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#include "usb.h"
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#include "button.h"
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#include "font.h"
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#include "lcd.h"
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#include "version.h"
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#define TAR_CHUNK 512
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#define TAR_HEADER_SIZE 157
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/* Where files sent via MTP are stored */
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static const char basedir[] = "/Content/0b00/00/";
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/* Can use memory after vector table up to 0x01f00000 */
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static char * const tarbuf = (char *)0x00000040;
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static const size_t tarbuf_size = 0x01f00000 - 0x00000040;
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/* Firmware data */
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static void * const load_buf = 0x00000000;
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static const size_t load_buf_size = 0x20000000 - 0x100000;
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static const void * const start_addr = 0x00000000;
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/* Show a message + "Shutting down...", then power off the device */
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static void display_message_and_power_off(int timeout, const char *msg)
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{
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verbose = true;
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printf(msg);
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printf("Shutting down...");
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sleep(timeout);
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power_off();
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}
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static void check_battery_safe(void)
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{
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if (battery_level_safe())
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return;
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display_message_and_power_off(HZ, "Battery low");
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}
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/* TODO: Handle charging while connected */
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static void handle_usb(int connect_timeout)
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{
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long end_tick = 0;
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int button;
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/* We need full button and backlight handling now */
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backlight_init();
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button_init();
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backlight_on();
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/* Start the USB driver */
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usb_init();
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usb_start_monitoring();
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/* Wait for threads to connect or cable is pulled */
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printf("USB: Connecting");
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if (connect_timeout != TIMEOUT_BLOCK)
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end_tick = current_tick + connect_timeout;
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while (1)
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{
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button = button_get_w_tmo(HZ/2);
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if (button == SYS_USB_CONNECTED)
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break; /* Hit */
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if (connect_timeout != TIMEOUT_BLOCK &&
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TIME_AFTER(current_tick, end_tick))
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{
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/* Timed out waiting for the connect - will happen when connected
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* to a charger through the USB port */
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printf("USB: Timed out");
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break;
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}
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if (usb_plugged() == USB_EXTRACTED)
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break; /* Cable pulled */
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}
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if (button == SYS_USB_CONNECTED)
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{
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/* Switch to verbose mode if not in it so that the status updates
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* are shown */
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verbose = true;
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/* Got the message - wait for disconnect */
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printf("Bootloader USB mode");
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usb_acknowledge(SYS_USB_CONNECTED_ACK, button_get_data());
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while (1)
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{
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button = button_get_w_tmo(HZ/2);
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if (button == SYS_USB_DISCONNECTED)
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break;
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check_battery_safe();
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}
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backlight_on();
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/* Sleep a little to let the backlight ramp up */
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sleep(HZ*5/4);
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}
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/* Put drivers initialized for USB connection into a known state */
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usb_close();
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button_close();
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backlight_close();
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}
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static void untar(int tar_fd)
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{
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char header[TAR_HEADER_SIZE];
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char *ptr;
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char path[102];
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int fd, i;
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int ret;
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size_t size = ffilesize(tar_fd);
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if (size > tarbuf_size)
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{
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printf("tar file too large"); /* Paranoid but proper */
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return;
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}
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ret = read(tar_fd, tarbuf, ffilesize(tar_fd));
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if (ret < 0)
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{
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printf("couldn't read tar file (%d)", ret);
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return;
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}
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ptr = tarbuf;
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while (1)
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{
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memcpy(header, ptr, TAR_HEADER_SIZE);
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if (*header == '\0') /* Check for EOF */
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break;
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/* Parse the size field */
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size = 0;
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for (i = 124 ; i < 124 + 11 ; i++) {
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size = (8 * size) + header[i] - '0';
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}
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/* Skip rest of header */
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ptr += TAR_CHUNK;
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/* Make the path absolute */
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strcpy(path, "/");
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strcat(path, header);
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if (header[156] == '0') /* file */
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{
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int wc;
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fd = creat(path, 0666);
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if (fd < 0)
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{
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printf("failed to create file (%d)", fd);
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}
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else
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{
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wc = write(fd, ptr, size);
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if (wc < 0)
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{
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printf("write failed (%d)", wc);
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break;
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}
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close(fd);
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}
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ptr += (size + TAR_CHUNK-1) & (~(TAR_CHUNK-1));
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}
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else if (header[156] == '5') /* directory */
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{
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int ret;
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/* Remove the trailing slash */
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if (path[strlen(path) - 1] == '/')
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path[strlen(path) - 1] = '\0';
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/* Create the dir */
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ret = mkdir(path);
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if (ret < 0 && errno != EEXIST)
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{
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printf("failed to create dir (%d)", ret);
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}
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}
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}
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}
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/* Look for a tar file or rockbox binary in the MTP directory */
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static void handle_untar(void)
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{
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char buf[MAX_PATH];
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char tarstring[6];
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char model[5];
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struct dirent* entry;
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DIR* dir;
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int fd;
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int rc;
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dir = opendir(basedir);
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while ((entry = readdir(dir)))
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{
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if (*entry->d_name == '.')
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continue;
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snprintf(buf, sizeof(buf), "%s%s", basedir, entry->d_name);
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fd = open(buf, O_RDONLY);
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if (fd < 0)
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continue;
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/* Check whether the file is a rockbox binary. */
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lseek(fd, 4, SEEK_SET);
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rc = read(fd, model, 4);
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if (rc == 4)
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{
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model[4] = 0;
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if (strcmp(model, "gigs") == 0)
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{
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verbose = true;
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printf("Found rockbox binary. Moving...");
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close(fd);
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int ret = rename(buf, BOOTDIR "/" BOOTFILE);
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printf("returned %d", ret);
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sleep(HZ);
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break;
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}
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}
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/* Check whether the file is a tar file. */
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lseek(fd, 257, SEEK_SET);
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rc = read(fd, tarstring, 5);
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if (rc == 5)
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{
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tarstring[5] = 0;
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if (strcmp(tarstring, "ustar") == 0)
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{
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verbose = true;
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printf("Found tar file. Unarchiving...");
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lseek(fd, 0, SEEK_SET);
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untar(fd);
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close(fd);
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printf("Removing tar file");
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remove(buf);
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break;
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}
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}
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close(fd);
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}
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}
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/* Try to load the firmware and run it */
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static void NORETURN_ATTR handle_firmware_load(void)
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{
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int rc = load_firmware(load_buf, BOOTFILE, load_buf_size);
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if(rc <= EFILE_EMPTY)
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error(EBOOTFILE, rc, true);
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/* Pause to look at messages */
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while (1)
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{
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int button = button_read_device();
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/* Ignore settings reset */
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if (button == BUTTON_NONE || button == BUTTON_MENU)
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break;
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sleep(HZ/5);
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check_battery_safe();
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/* If the disk powers off, the firmware will lock at startup */
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storage_spin();
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}
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/* Put drivers into a known state */
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button_close_device();
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storage_close();
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system_prepare_fw_start();
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commit_discard_idcache();
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asm volatile ("bx %0": : "r"(start_addr));
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/* Halt */
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while (1)
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core_idle();
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}
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void main(void)
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{
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int rc;
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int batt;
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system_init();
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kernel_init();
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/* Keep button_device_init early to delay calls to button_read_device */
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button_init_device();
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lcd_init();
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font_init();
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show_logo();
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lcd_clear_display();
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if (button_hold())
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display_message_and_power_off(HZ, "Hold switch on");
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if (button_read_device() != BUTTON_NONE)
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verbose = true;
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printf("Gigabeat S Rockbox Bootloader");
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printf("Version %s", rbversion);
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adc_init();
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batt = _battery_voltage();
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printf("Battery: %d.%03d V", batt / 1000, batt % 1000);
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check_battery_safe();
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rc = storage_init();
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if(rc)
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error(EATA, rc, true);
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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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error(EDISK, rc, true);
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printf("Init complete");
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/* Do USB first since a tar or binary could be added to the MTP directory
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* at the time and we can untar or move after unplugging. */
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if (usb_plugged() == USB_INSERTED)
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handle_usb(HZ*2);
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handle_untar();
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handle_firmware_load(); /* No return */
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}
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