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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2021 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 "installer-fiiom3k.h"
#include "nand-x1000.h"
#include "system.h"
#include "core_alloc.h"
#include "file.h"
#include "microtar.h"
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#define IMAGE_SIZE (128 * 1024)
#define TAR_SIZE (256 * 1024)
static int flash_img_read(uint8_t* buffer)
{
nand_drv* drv = nand_init();
nand_lock(drv);
int rc = nand_open(drv);
if(rc < 0)
goto error;
rc = nand_read_bytes(drv, 0, IMAGE_SIZE, buffer);
if(rc < 0) {
rc = INSTALL_ERR_FLASH(NAND_READ, rc);
goto error;
}
error:
nand_close(drv);
nand_unlock(drv);
return rc;
}
static int flash_img_write(const uint8_t* buffer)
{
nand_drv* drv = nand_init();
nand_lock(drv);
int rc = nand_open(drv);
if(rc < 0)
goto error;
rc = nand_write_bytes(drv, 0, IMAGE_SIZE, buffer);
if(rc < 0) {
rc = INSTALL_ERR_FLASH(NAND_WRITE, rc);
goto error;
}
error:
nand_close(drv);
nand_unlock(drv);
return rc;
}
static int patch_img(mtar_t* tar, uint8_t* buffer, const char* filename,
size_t patch_offset, size_t patch_size)
{
/* Seek to file */
mtar_header_t h;
int rc = mtar_find(tar, filename, &h);
if(rc != MTAR_ESUCCESS) {
rc = INSTALL_ERR_MTAR(TAR_FIND, rc);
return rc;
}
/* We need a normal file */
if(h.type != 0 && h.type != MTAR_TREG)
return INSTALL_ERR_BAD_FORMAT;
/* Check size does not exceed patch area */
if(h.size > patch_size)
return INSTALL_ERR_BAD_FORMAT;
/* Read data directly into patch area, fill unused bytes with 0xff */
memset(&buffer[patch_offset], 0xff, patch_size);
rc = mtar_read_data(tar, &buffer[patch_offset], h.size);
if(rc != MTAR_ESUCCESS) {
rc = INSTALL_ERR_MTAR(TAR_READ, rc);
return rc;
}
return INSTALL_SUCCESS;
}
int install_boot(const char* srcfile)
{
int rc;
mtar_t* tar = NULL;
int handle = -1;
/* Allocate enough memory for image and tar state */
size_t bufsize = IMAGE_SIZE + sizeof(mtar_t) + 2*CACHEALIGN_SIZE;
handle = core_alloc("boot_image", bufsize);
if(handle < 0) {
rc = INSTALL_ERR_OUT_OF_MEMORY;
goto error;
}
uint8_t* buffer = core_get_data(handle);
/* Tar state alloc */
CACHEALIGN_BUFFER(buffer, bufsize);
tar = (mtar_t*)buffer;
memset(tar, 0, sizeof(tar));
/* Image buffer alloc */
buffer += sizeof(mtar_t);
CACHEALIGN_BUFFER(buffer, bufsize);
/* Read the flash -- we need an existing image to patch */
rc = flash_img_read(buffer);
if(rc < 0)
goto error;
/* Open the tarball */
rc = mtar_open(tar, srcfile, "r");
if(rc != MTAR_ESUCCESS) {
rc = INSTALL_ERR_MTAR(TAR_OPEN, rc);
goto error;
}
/* Extract the needed files & patch 'em in */
rc = patch_img(tar, buffer, "spl.m3k", 0, 12 * 1024);
if(rc < 0)
goto error;
rc = patch_img(tar, buffer, "bootloader.ucl", 0x6800, 102 * 1024);
if(rc < 0)
goto error;
/* Flash the new image */
rc = flash_img_write(buffer);
if(rc < 0)
goto error;
rc = INSTALL_SUCCESS;
error:
if(tar && tar->close)
mtar_close(tar);
if(handle >= 0)
core_free(handle);
return rc;
}
int backup_boot(const char* destfile)
{
int rc;
int handle = -1;
int fd = -1;
size_t bufsize = IMAGE_SIZE + CACHEALIGN_SIZE - 1;
handle = core_alloc("boot_image", bufsize);
if(handle < 0) {
rc = INSTALL_ERR_OUT_OF_MEMORY;
goto error;
}
uint8_t* buffer = core_get_data(handle);
CACHEALIGN_BUFFER(buffer, bufsize);
rc = flash_img_read(buffer);
if(rc < 0)
goto error;
fd = open(destfile, O_CREAT|O_TRUNC|O_WRONLY);
if(fd < 0) {
rc = INSTALL_ERR_FILE_IO;
goto error;
}
ssize_t cnt = write(fd, buffer, IMAGE_SIZE);
if(cnt != IMAGE_SIZE) {
rc = INSTALL_ERR_FILE_IO;
goto error;
}
error:
if(fd >= 0)
close(fd);
if(handle >= 0)
core_free(handle);
return rc;
}
int restore_boot(const char* srcfile)
{
int rc;
int handle = -1;
int fd = -1;
size_t bufsize = IMAGE_SIZE + CACHEALIGN_SIZE - 1;
handle = core_alloc("boot_image", bufsize);
if(handle < 0) {
rc = INSTALL_ERR_OUT_OF_MEMORY;
goto error;
}
uint8_t* buffer = core_get_data(handle);
CACHEALIGN_BUFFER(buffer, bufsize);
fd = open(srcfile, O_RDONLY);
if(fd < 0) {
rc = INSTALL_ERR_FILE_NOT_FOUND;
goto error;
}
off_t fsize = filesize(fd);
if(fsize != IMAGE_SIZE) {
rc = INSTALL_ERR_BAD_FORMAT;
goto error;
}
ssize_t cnt = read(fd, buffer, IMAGE_SIZE);
if(cnt != IMAGE_SIZE) {
rc = INSTALL_ERR_FILE_IO;
goto error;
}
close(fd);
fd = -1;
rc = flash_img_write(buffer);
if(rc < 0)
goto error;
error:
if(fd >= 0)
close(fd);
if(handle >= 0)
core_free(handle);
return rc;
}
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