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/**
* NXT bootstrap interface; NXT firmware handling code.
*
* Copyright 2006 David Anderson <david.anderson@calixo.net>
*
* 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 program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include "error.h"
#include "lowlevel.h"
#include "samba.h"
#include "flash.h"
#include "firmware.h"
#include "flash_routine.h"
static nxt_error_t
nxt_flash_prepare(nxt_t *nxt)
{
// Put the clock in PLL/2 mode
NXT_ERR(nxt_write_word(nxt, 0xFFFFFC30, 0x7));
// Unlock the flash chip
NXT_ERR(nxt_flash_unlock_all_regions(nxt));
// Send the flash writing routine
NXT_ERR(nxt_send_file(nxt, 0x202000, flash_bin, flash_len));
return NXT_OK;
}
static nxt_error_t
nxt_flash_block(nxt_t *nxt, nxt_word_t block_num, char *buf)
{
// Set the target block number
NXT_ERR(nxt_write_word(nxt, 0x202300, block_num));
// Send the block to flash
NXT_ERR(nxt_send_file(nxt, 0x202100, buf, 256));
// Jump into the flash writing routine
NXT_ERR(nxt_jump(nxt, 0x202000));
return NXT_OK;
}
static nxt_error_t
nxt_flash_finish(nxt_t *nxt)
{
return nxt_flash_wait_ready(nxt);
}
static nxt_error_t
nxt_firmware_validate_fd(int fd)
{
struct stat s;
if (fstat(fd, &s) < 0)
return NXT_FILE_ERROR;
if (s.st_size > 256*1024)
return NXT_INVALID_FIRMWARE;
return NXT_OK;
}
nxt_error_t
nxt_firmware_validate(char *fw_path)
{
nxt_error_t err;
int fd;
fd = open(fw_path, O_RDONLY);
if (fd < 0)
return NXT_FILE_ERROR;
err = nxt_firmware_validate_fd(fd);
close(fd);
return err;
}
nxt_error_t
nxt_firmware_flash(nxt_t *nxt, char *fw_path)
{
int fd, i, err;
fd = open(fw_path, O_RDONLY);
if (fd < 0)
return NXT_FILE_ERROR;
err = nxt_firmware_validate_fd(fd);
if (err != NXT_OK)
{
close(fd);
return NXT_INVALID_FIRMWARE;
}
NXT_ERR(nxt_flash_prepare(nxt));
for (i = 0; i < 1024; i++) //256*1024; i += 256)
{
char buf[256];
int ret;
memset(buf, 0, 256);
ret = read(fd, buf, 256);
if (ret != -1)
NXT_ERR(nxt_flash_block(nxt, i, buf));
if (ret < 256)
{
close(fd);
NXT_ERR(nxt_flash_finish(nxt));
return ret == -1 ? NXT_FILE_ERROR : NXT_OK;
}
NXT_ERR(nxt_flash_block(nxt, i, buf));
}
close(fd);
NXT_ERR(nxt_flash_finish(nxt));
return NXT_OK;
}
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