Nyaaori/rockbox
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
rockbox/bootloader/x1000/utils.c
Aidan MacDonald 45e2d5d641 x1000: check for ECC failures in bootloader uimage reader 
Update the uimage reader's bad block handling to treat an ECC
uncorrectable error on the first page of the block as a bad block.

Change-Id: Id3aa7a338fcc36c0e2381063b119efe41f957122
2022-07-19 13:15:26 +01:00

423 lines
12 KiB
C
Raw Blame History

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2022 Aidan MacDonald
*
* 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 "x1000bootloader.h"
#include "core_alloc.h"
#include "storage.h"
#include "button.h"
#include "kernel.h"
#include "usb.h"
#include "file.h"
#include "rb-loader.h"
#include "loader_strerror.h"
#include "linuxboot.h"
#include "screendump.h"
#include "nand-x1000.h"
#include "sfc-x1000.h"
/* Set to true if a SYS_USB_CONNECTED event is seen
* Set to false if a SYS_USB_DISCONNECTED event is seen
* Handled by the gui code since that's how events are delivered
* TODO: this is an ugly kludge */
bool is_usb_connected = false;
static bool screenshot_enabled = false;
/* this is both incorrect and incredibly racy... */
int check_disk(bool wait)
{
if(storage_present(IF_MD(0)))
return DISK_PRESENT;
if(!wait)
return DISK_ABSENT;
while(!storage_present(IF_MD(0))) {
splashf(0, "Insert SD card\nPress " BL_QUIT_NAME " to cancel");
if(get_button(HZ/4) == BL_QUIT)
return DISK_CANCELED;
}
/* a lie intended to give time for mounting the disk in the background */
splashf(HZ, "Scanning disk");
return DISK_PRESENT;
}
void usb_mode(void)
{
if(!is_usb_connected)
splashf(0, "Waiting for USB\nPress " BL_QUIT_NAME " to cancel");
while(!is_usb_connected)
if(get_button(TIMEOUT_BLOCK) == BL_QUIT)
return;
splashf(0, "USB mode");
usb_acknowledge(SYS_USB_CONNECTED_ACK);
while(is_usb_connected)
get_button(TIMEOUT_BLOCK);
splashf(3*HZ, "USB disconnected");
}
void screenshot(void)
{
#ifdef HAVE_SCREENDUMP
if(!screenshot_enabled || check_disk(false) != DISK_PRESENT)
return;
screen_dump();
#endif
}
void screenshot_enable(void)
{
#ifdef HAVE_SCREENDUMP
splashf(3*HZ, "Screenshots enabled\nPress %s for screenshot",
BL_SCREENSHOT_NAME);
screenshot_enabled = true;
#endif
}
int load_rockbox(const char* filename, size_t* sizep)
{
if(check_disk(true) != DISK_PRESENT)
return -1;
int handle = core_alloc_maximum("rockbox", sizep, &buflib_ops_locked);
if(handle < 0) {
splashf(5*HZ, "Out of memory");
return -2;
}
unsigned char* loadbuffer = core_get_data(handle);
int rc = load_firmware(loadbuffer, filename, *sizep);
if(rc <= 0) {
core_free(handle);
splashf(5*HZ, "Error loading Rockbox\n%s", loader_strerror(rc));
return -3;
}
core_shrink(handle, loadbuffer, rc);
*sizep = rc;
return handle;
}
int load_uimage_file(const char* filename,
struct uimage_header* uh, size_t* sizep)
{
if(check_disk(true) != DISK_PRESENT)
return -1;
int fd = open(filename, O_RDONLY);
if(fd < 0) {
splashf(5*HZ, "Can't open file\n%s", filename);
return -2;
}
int handle = uimage_load(uh, sizep, uimage_fd_reader, (void*)(intptr_t)fd);
if(handle <= 0) {
splashf(5*HZ, "Cannot load uImage (%d)\n%s", handle, filename);
return -3;
}
return handle;
}
struct nand_reader_data
{
struct nand_drv* ndrv;
nand_page_t page;
nand_page_t end_page;
unsigned offset;
uint32_t count;
};
static int uimage_nand_reader_init(struct nand_reader_data* d,
struct nand_drv* ndrv,
uint32_t addr, uint32_t length)
{
unsigned pg_size = ndrv->chip->page_size;
/* must start at a block address */
if(addr % (pg_size << ndrv->chip->log2_ppb))
return -1;
d->ndrv = ndrv;
d->page = addr / ndrv->chip->page_size;
d->end_page = d->page + (length + pg_size - 1) / pg_size;
d->offset = 0;
d->count = length;
if(d->end_page > ndrv->chip->nr_blocks << ndrv->chip->log2_ppb)
return -2;
return 0;
}
static ssize_t uimage_nand_reader(void* buf, size_t count, void* rctx)
{
struct nand_reader_data* d = rctx;
struct nand_drv* ndrv = d->ndrv;
unsigned pg_size = ndrv->chip->page_size;
size_t read_count = 0;
int rc;
/* truncate overlong reads */
if(count > d->count)
count = d->count;
while(d->page < d->end_page && read_count < count) {
rc = nand_page_read(ndrv, d->page, ndrv->page_buf);
/* Ignore ECC errors on the first page of a block. This may
* indicate a bad block. */
if(rc == NAND_ERR_ECC_FAIL &&
d->page % ndrv->ppb == 0 && d->offset == 0) {
d->page += ndrv->ppb;
continue;
}
if(rc < 0)
return -1;
/* Check the first page of a block for the bad block marker.
* Any bad blocks are silently skipped. */
if(!(d->page & (ndrv->ppb - 1))) {
if(ndrv->page_buf[ndrv->chip->bbm_pos] != 0xff) {
if(d->offset != 0)
return -1; /* shouldn't happen but just in case... */
d->page += ndrv->ppb;
continue;
}
}
size_t copy_len = MIN(count - read_count, pg_size - d->offset);
memcpy(buf, &ndrv->page_buf[d->offset], copy_len);
/* this seems like an excessive amount of arithmetic... */
buf += copy_len;
read_count += copy_len;
d->count -= copy_len;
d->offset += copy_len;
if(d->offset >= pg_size) {
d->offset -= pg_size;
d->page++;
}
}
return read_count;
}
int load_uimage_flash(uint32_t addr, uint32_t length,
struct uimage_header* uh, size_t* sizep)
{
struct nand_drv* ndrv = nand_init();
nand_lock(ndrv);
if(nand_open(ndrv) != NAND_SUCCESS) {
splashf(5*HZ, "NAND open failed");
nand_unlock(ndrv);
return -1;
}
struct nand_reader_data n;
int ret = uimage_nand_reader_init(&n, ndrv, addr, length);
if(ret != 0) {
splashf(5*HZ, "Bad image params\nAddr: %08lx\nLength: %lu", addr, length);
ret = -2;
goto out;
}
int handle = uimage_load(uh, sizep, uimage_nand_reader, &n);
if(handle <= 0) {
splashf(5*HZ, "uImage load failed (%d)", handle);
ret = -3;
goto out;
}
ret = handle;
out:
nand_close(ndrv);
nand_unlock(ndrv);
return ret;
}
int dump_flash(int fd, uint32_t addr, uint32_t length)
{
static char buf[8192];
int ret = 0;
struct nand_drv* ndrv = nand_init();
nand_lock(ndrv);
ret = nand_open(ndrv);
if(ret != NAND_SUCCESS) {
splashf(5*HZ, "NAND open failed\n");
nand_unlock(ndrv);
return ret;
}
while(length > 0) {
uint32_t count = MIN(length, sizeof(buf));
ret = nand_read_bytes(ndrv, addr, count, buf);
if(ret != NAND_SUCCESS) {
splashf(5*HZ, "Dump failed\nNAND I/O error");
goto out;
}
if(write(fd, buf, count) != (ssize_t)count) {
splashf(5*HZ, "Dump failed\nFile I/O error");
ret = -1;
goto out;
}
length -= count;
addr += count;
}
out:
nand_close(ndrv);
nand_unlock(ndrv);
return ret;
}
int dump_flash_file(const char* file, uint32_t addr, uint32_t length)
{
if(check_disk(true) != DISK_PRESENT)
return -1;
splashf(0, "Dumping...\n%s\n0x%08lx\n%lu bytes", file, addr, length);
int fd = open(file, O_WRONLY|O_CREAT|O_TRUNC);
if(fd < 0) {
splashf(5*HZ, "Cannot open file\n%s", file);
return -2;
}
int rc = dump_flash(fd, addr, length);
if(rc < 0) {
close(fd);
remove(file);
return -3;
}
splashf(5*HZ, "Dumped\n%s", file);
close(fd);
return 0;
}
void dump_of_player(void)
{
#ifdef OF_PLAYER_ADDR
dump_flash_file("/of_player.img", OF_PLAYER_ADDR, OF_PLAYER_LENGTH);
#endif
}
void dump_of_recovery(void)
{
#ifdef OF_RECOVERY_ADDR
dump_flash_file("/of_recovery.img", OF_RECOVERY_ADDR, OF_RECOVERY_LENGTH);
#endif
}
void dump_entire_flash(void)
{
#if defined(FIIO_M3K) || defined(SHANLING_Q1) || defined(EROS_QN)
/* TODO: this should read the real chip size instead of hardcoding it */
dump_flash_file("/flash.img", 0, 2048 * 64 * 1024);
#endif
}
static void probe_flash(int log_fd)
{
static uint8_t buffer[CACHEALIGN_UP(32)] CACHEALIGN_ATTR;
/* Use parameters from maskrom */
const uint32_t clock_freq = X1000_EXCLK_FREQ; /* a guess */
const uint32_t dev_conf = jz_orf(SFC_DEV_CONF,
CE_DL(1), HOLD_DL(1), WP_DL(1),
CPHA(0), CPOL(0),
TSH(0), TSETUP(0), THOLD(0),
STA_TYPE_V(1BYTE), CMD_TYPE_V(8BITS),
SMP_DELAY(0));
const size_t readid_len = 4;
/* NOTE: This assumes the NAND driver is inactive. If this is not true,
* this will seriously mess up the NAND driver. */
sfc_open();
sfc_set_dev_conf(dev_conf);
sfc_set_clock(clock_freq);
/* Issue reset */
sfc_exec(NANDCMD_RESET, 0, NULL, 0);
mdelay(10);
/* Try various read ID commands (cf. Linux's SPI NAND identify routine) */
sfc_exec(NANDCMD_READID(0, 0), 0, buffer, readid_len|SFC_READ);
fdprintf(log_fd, "readID opcode = %02x %02x %02x %02x\n",
buffer[0], buffer[1], buffer[2], buffer[3]);
sfc_exec(NANDCMD_READID(1, 0), 0, buffer, readid_len|SFC_READ);
fdprintf(log_fd, "readID address = %02x %02x %02x %02x\n",
buffer[0], buffer[1], buffer[2], buffer[3]);
sfc_exec(NANDCMD_READID(0, 8), 0, buffer, readid_len|SFC_READ);
fdprintf(log_fd, "readID dummy = %02x %02x %02x %02x\n",
buffer[0], buffer[1], buffer[2], buffer[3]);
/* Try reading Ingenic SFC boot block */
sfc_exec(NANDCMD_PAGE_READ(3), 0, NULL, 0);
mdelay(500);
sfc_exec(NANDCMD_READ_CACHE_SLOW(2), 0, buffer, 16|SFC_READ);
fdprintf(log_fd, "sfc params0 = %02x %02x %02x %02x\n",
buffer[ 0], buffer[ 1], buffer[ 2], buffer[ 3]);
fdprintf(log_fd, "sfc params1 = %02x %02x %02x %02x\n",
buffer[ 4], buffer[ 5], buffer[ 6], buffer[ 7]);
fdprintf(log_fd, "sfc params2 = %02x %02x %02x %02x\n",
buffer[ 8], buffer[ 9], buffer[10], buffer[11]);
fdprintf(log_fd, "sfc params3 = %02x %02x %02x %02x\n",
buffer[12], buffer[13], buffer[14], buffer[15]);
sfc_close();
}
void show_flash_info(void)
{
if(check_disk(true) != DISK_PRESENT)
return;
int fd = open("/flash_info.txt", O_WRONLY|O_CREAT|O_TRUNC);
if(fd < 0) {
splashf(5*HZ, "Cannot create log file");
return;
}
splashf(0, "Probing flash...");
probe_flash(fd);
close(fd);
splashf(3*HZ, "Dumped flash info\nSee flash_info.txt");
}
Reference in a new issue View git blame Copy permalink