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rockbox/bootloader/main-pp.c
William Wilgus 7c67a48332 Sansa E200v1 Bootloader attempt at enabling USB in boot loader 
there is a 1MB free region that is used to load the firmware but we
shouldn't need that till after a USB connection

so here is my 2nd try

Change-Id: I2552db3a7fba019d7e7188984432f758ddafe548
2021-10-04 10:56:33 -04:00

498 lines
14 KiB
C
Raw Blame History

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 by Barry Wardell
*
* Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
* and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
*
* 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 <stdio.h>
#include <stdlib.h>
#include "config.h"
#include "common.h"
#include "cpu.h"
#include "file.h"
#include "system.h"
#include "../kernel-internal.h"
#include "lcd.h"
#include "font.h"
#include "storage.h"
#include "file_internal.h"
#include "adc.h"
#include "button.h"
#include "disk.h"
#include "crc32.h"
#include "mi4-loader.h"
#include "loader_strerror.h"
#include <string.h>
#include "power.h"
#include "version.h"
#if defined(SANSA_E200) || defined(PHILIPS_SA9200)
#include "i2c.h"
#include "backlight-target.h"
#endif
#include "usb.h"
#if defined(SANSA_E200) || defined(SANSA_C200) || defined(PHILIPS_SA9200)
#include "usb_drv.h"
#endif
#if defined(SANSA_E200) && defined(HAVE_BOOTLOADER_USB_MODE)
#include "core_alloc.h"
#endif
#if defined(SAMSUNG_YH925)
/* this function (in lcd-yh925.c) resets the screen orientation for the OF
* for use with dualbooting */
void lcd_reset(void);
#endif
/* Show the Rockbox logo - in show_logo.c */
extern void show_logo(void);
/* Button definitions */
#if CONFIG_KEYPAD == IRIVER_H10_PAD
#define BOOTLOADER_BOOT_OF BUTTON_LEFT
#elif CONFIG_KEYPAD == SANSA_E200_PAD
#define BOOTLOADER_BOOT_OF BUTTON_LEFT
#elif CONFIG_KEYPAD == SANSA_C200_PAD
#define BOOTLOADER_BOOT_OF BUTTON_LEFT
#elif CONFIG_KEYPAD == MROBE100_PAD
#define BOOTLOADER_BOOT_OF BUTTON_POWER
#elif CONFIG_KEYPAD == PHILIPS_SA9200_PAD
#define BOOTLOADER_BOOT_OF BUTTON_VOL_UP
#elif CONFIG_KEYPAD == PHILIPS_HDD1630_PAD
#define BOOTLOADER_BOOT_OF BUTTON_MENU
#elif CONFIG_KEYPAD == PHILIPS_HDD6330_PAD
#define BOOTLOADER_BOOT_OF BUTTON_VOL_UP
#elif (CONFIG_KEYPAD == SAMSUNG_YH820_PAD) || \
(CONFIG_KEYPAD == SAMSUNG_YH92X_PAD)
#define BOOTLOADER_BOOT_OF BUTTON_LEFT
#elif CONFIG_KEYPAD == SANSA_FUZE_PAD
#define BOOTLOADER_BOOT_OF BUTTON_LEFT
#elif CONFIG_KEYPAD == PBELL_VIBE500_PAD
#define BOOTLOADER_BOOT_OF BUTTON_OK
#endif
/* Maximum allowed firmware image size. 10MB is more than enough */
#define MAX_LOADSIZE (10*1024*1024)
/* A buffer to load the original firmware or Rockbox into */
unsigned char *loadbuffer = (unsigned char *)DRAM_START;
/* Locations and sizes in hidden partition on Sansa */
#if (CONFIG_STORAGE & STORAGE_SD)
#define PPMI_SECTOR_OFFSET 1024
#define PPMI_SECTORS 1
#define MI4_HEADER_SECTORS 1
#define NUM_PARTITIONS 2
#else
#define NUM_PARTITIONS 1
#endif
#define MI4_HEADER_SIZE 0x200
/* PPMI header structure */
struct ppmi_header_t {
unsigned char magic[4];
uint32_t length;
uint32_t pad[126];
};
#if (CONFIG_STORAGE & STORAGE_SD)
/* Load mi4 firmware from a hidden disk partition */
int load_mi4_part(unsigned char* buf, struct partinfo* pinfo,
unsigned int buffer_size, bool disable_rebuild)
{
struct mi4header_t mi4header;
struct ppmi_header_t ppmi_header;
unsigned long sum;
/* Read header to find out how long the mi4 file is. */
storage_read_sectors(IF_MD(0,) pinfo->start + PPMI_SECTOR_OFFSET,
PPMI_SECTORS, &ppmi_header);
/* The first four characters at 0x80000 (sector 1024) should be PPMI*/
if( memcmp(ppmi_header.magic, "PPMI", 4) )
return EFILE_NOT_FOUND;
printf("BL mi4 size: %x", ppmi_header.length);
/* Read mi4 header of the OF */
storage_read_sectors(IF_MD(0,) pinfo->start + PPMI_SECTOR_OFFSET + PPMI_SECTORS
+ (ppmi_header.length/512), MI4_HEADER_SECTORS, &mi4header);
/* We don't support encrypted mi4 files yet */
if( (mi4header.plaintext) != (mi4header.mi4size-MI4_HEADER_SIZE))
return EINVALID_FORMAT;
/* MI4 file size */
printf("OF mi4 size: %x", mi4header.mi4size);
if ((mi4header.mi4size-MI4_HEADER_SIZE) > buffer_size)
return EFILE_TOO_BIG;
/* CRC32 */
printf("CRC32: %x", mi4header.crc32);
/* Rockbox model id */
printf("Model id: %.4s", mi4header.model);
/* Read binary type (RBOS, RBBL) */
printf("Binary type: %.4s", mi4header.type);
/* Load firmware */
storage_read_sectors(IF_MD(0,) pinfo->start + PPMI_SECTOR_OFFSET + PPMI_SECTORS
+ (ppmi_header.length/512) + MI4_HEADER_SECTORS,
(mi4header.mi4size-MI4_HEADER_SIZE)/512, buf);
/* Check CRC32 to see if we have a valid file */
sum = crc_32r (buf,mi4header.mi4size-MI4_HEADER_SIZE,0);
printf("Calculated CRC32: %x", sum);
if(sum != mi4header.crc32)
return EBAD_CHKSUM;
#ifdef SANSA_E200
if (disable_rebuild)
{
char block[512];
printf("Disabling database rebuild");
storage_read_sectors(IF_MD(0,) pinfo->start + 0x3c08, 1, block);
block[0xe1] = 0;
storage_write_sectors(IF_MD(0,) pinfo->start + 0x3c08, 1, block);
}
#else
(void) disable_rebuild;
#endif
return mi4header.mi4size-MI4_HEADER_SIZE;
}
#endif /* (CONFIG_STORAGE & STORAGE_SD) */
#ifdef HAVE_BOOTLOADER_USB_MODE
/* Return USB_HANDLED if session took place else return USB_EXTRACTED */
static int handle_usb(int connect_timeout)
{
static struct event_queue q SHAREDBSS_ATTR;
struct queue_event ev;
int usb = USB_EXTRACTED;
long end_tick = 0;
if (!usb_plugged())
return USB_EXTRACTED;
queue_init(&q, true);
usb_init();
usb_start_monitoring();
printf("USB: Connecting");
if (connect_timeout != TIMEOUT_BLOCK)
end_tick = current_tick + connect_timeout;
while (1)
{
/* Sleep no longer than 1/2s */
queue_wait_w_tmo(&q, &ev, HZ/2);
if (ev.id == SYS_USB_CONNECTED)
{
/* Switch to verbose mode if not in it so that the status updates
* are shown */
verbose = true;
/* Got the message - wait for disconnect */
printf("Bootloader USB mode");
usb = USB_HANDLED;
usb_acknowledge(SYS_USB_CONNECTED_ACK);
usb_wait_for_disconnect(&q);
}
if (connect_timeout != TIMEOUT_BLOCK &&
TIME_AFTER(current_tick, end_tick))
{
/* Timed out waiting for the connect - will happen when connected
* to a charger instead of a host port and the charging pin is
* the same as the USB pin */
printf("USB: Timed out");
break;
}
if (!usb_plugged())
break; /* Cable pulled */
}
usb_close();
queue_delete(&q);
return usb;
}
#elif (defined(SANSA_E200) || defined(SANSA_C200) || defined(PHILIPS_SA9200) \
|| defined (SANSA_VIEW)) && !defined(USE_ROCKBOX_USB)
/* Return USB_INSERTED if cable present */
static int handle_usb(int connect_timeout)
{
int usb_retry = 0;
int usb = USB_EXTRACTED;
usb_init();
while (usb_drv_powered() && usb_retry < 5 && usb != USB_INSERTED)
{
usb_retry++;
sleep(HZ/4);
usb = usb_detect();
}
if (usb != USB_INSERTED)
usb = USB_EXTRACTED;
return usb;
(void)connect_timeout;
}
#else
/* Ignore cable state */
static int handle_usb(int connect_timeout)
{
return USB_EXTRACTED;
(void)connect_timeout;
}
#endif /* HAVE_BOOTLOADER_USB_MODE */
void* main(void)
{
int i;
int btn;
int rc;
int num_partitions;
struct partinfo pinfo;
#if !(CONFIG_STORAGE & STORAGE_SD)
char buf[256];
unsigned short* identify_info;
#endif
int usb = USB_EXTRACTED;
system_init();
#if defined(SANSA_E200) && defined(HAVE_BOOTLOADER_USB_MODE)
core_allocator_init();
#endif
kernel_init();
#ifdef HAVE_BOOTLOADER_USB_MODE
/* loader must service interrupts */
enable_interrupt(IRQ_FIQ_STATUS);
#endif
lcd_init();
font_init();
show_logo();
adc_init();
#ifdef HAVE_BOOTLOADER_USB_MODE
button_init_device();
#else
button_init();
#endif
#if defined(SANSA_E200) || defined(PHILIPS_SA9200)
i2c_init();
backlight_hw_on();
#endif
if (button_hold())
{
verbose = true;
lcd_clear_display();
printf("Hold switch on");
printf("Shutting down...");
sleep(HZ);
power_off();
}
btn = button_read_device();
/* Enable bootloader messages if any button is pressed */
#ifdef HAVE_BOOTLOADER_USB_MODE
lcd_clear_display();
if (btn)
verbose = true;
#else
if (btn) {
lcd_clear_display();
verbose = true;
}
#endif
lcd_setfont(FONT_SYSFIXED);
printf("Rockbox boot loader");
printf("Version: %s", rbversion);
printf(MODEL_NAME);
i=storage_init();
#if !(CONFIG_STORAGE & STORAGE_SD)
if (i==0) {
identify_info=ata_get_identify();
/* Show model */
for (i=0; i < 20; i++) {
((unsigned short*)buf)[i]=htobe16(identify_info[i+27]);
}
buf[40]=0;
for (i=39; i && buf[i]==' '; i--) {
buf[i]=0;
}
printf(buf);
} else {
error(EATA, i, true);
}
#endif
filesystem_init();
num_partitions = disk_mount_all();
if (num_partitions<=0)
{
error(EDISK,num_partitions, true);
}
/* Just list the first 2 partitions since we don't have any devices yet
that have more than that */
for(i=0; i<NUM_PARTITIONS; i++)
{
disk_partinfo(i, &pinfo);
printf("Partition %d: 0x%02x %ld MB",
i, pinfo.type, pinfo.size / 2048);
}
/* Now that storage is initialized, check for USB connection */
if ((btn & BOOTLOADER_BOOT_OF) == 0)
{
usb_pin_init();
usb = handle_usb(HZ*2);
if (usb == USB_INSERTED)
btn |= BOOTLOADER_BOOT_OF;
}
/* Try loading Rockbox, if that fails, fall back to the OF */
if((btn & BOOTLOADER_BOOT_OF) == 0)
{
printf("Loading Rockbox...");
rc = load_mi4(loadbuffer, BOOTFILE, MAX_LOADSIZE);
if (rc <= EFILE_EMPTY)
{
bool old_verbose = verbose;
verbose = true;
printf("Can't load " BOOTFILE ": ");
printf(loader_strerror(rc));
verbose = old_verbose;
btn |= BOOTLOADER_BOOT_OF;
sleep(5*HZ);
}
else
goto main_exit;
}
if(btn & BOOTLOADER_BOOT_OF)
{
/* Load original mi4 firmware in to a memory buffer called loadbuffer.
The rest of the loading is done in crt0.S.
1) First try reading from the hidden partition (on Sansa only).
2) Next try a decrypted mi4 file in /System/OF.mi4
3) Finally, try a raw firmware binary in /System/OF.bin. It should be
a mi4 firmware decrypted and header stripped using mi4code.
*/
printf("Loading original firmware...");
#if (CONFIG_STORAGE & STORAGE_SD)
/* First try a (hidden) firmware partition */
printf("Trying firmware partition");
disk_partinfo(1, &pinfo);
if(pinfo.type == PARTITION_TYPE_OS2_HIDDEN_C_DRIVE)
{
rc = load_mi4_part(loadbuffer, &pinfo, MAX_LOADSIZE,
usb == USB_INSERTED);
if (rc <= EFILE_EMPTY) {
printf("Can't load from partition");
printf(loader_strerror(rc));
} else {
goto main_exit;
}
} else {
printf("No hidden partition found.");
}
#endif
#if defined(PHILIPS_HDD1630) || defined(PHILIPS_HDD6330) || defined(PHILIPS_SA9200)
printf("Trying /System/OF.ebn");
rc=load_mi4(loadbuffer, "/System/OF.ebn", MAX_LOADSIZE);
if (rc <= EFILE_EMPTY) {
printf("Can't load /System/OF.ebn");
printf(loader_strerror(rc));
} else {
goto main_exit;
}
#endif
printf("Trying /System/OF.mi4");
rc=load_mi4(loadbuffer, "/System/OF.mi4", MAX_LOADSIZE);
if (rc <= EFILE_EMPTY) {
printf("Can't load /System/OF.mi4");
printf(loader_strerror(rc));
} else {
#if defined(SAMSUNG_YH925)
lcd_reset();
#endif
goto main_exit;
}
printf("Trying /System/OF.bin");
rc=load_raw_firmware(loadbuffer, "/System/OF.bin", MAX_LOADSIZE);
if (rc <= EFILE_EMPTY) {
printf("Can't load /System/OF.bin");
printf(loader_strerror(rc));
} else {
#if defined(SAMSUNG_YH925)
lcd_reset();
#endif
goto main_exit;
}
error(0, 0, true);
}
main_exit:
#ifdef HAVE_BOOTLOADER_USB_MODE
storage_close();
system_prepare_fw_start();
#endif
return (void*)loadbuffer;
}
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