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/**
* NXT bootstrap interface; NXT onboard flashing driver.
*
* Copyright 2006 David Anderson <dave@natulte.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
*/
#define VINTPTR(addr) ((volatile unsigned int *)(addr))
#define VINT(addr) (*(VINTPTR(addr)))
#define USER_PAGE VINTPTR(0x00202100)
#define USER_PAGE_NUM VINT(0x00202300)
#define FLASH_BASE VINTPTR(0x00100000)
#define FLASH_CMD_REG VINT(0xFFFFFF64)
#define FLASH_STATUS_REG VINT(0xFFFFFF68)
#define OFFSET_PAGE_NUM ((USER_PAGE_NUM & 0x000003FF) << 8)
#define FLASH_CMD_WRITE (0x5A000001 + OFFSET_PAGE_NUM)
void
do_flash_write(void)
{
unsigned long i;
while (!(FLASH_STATUS_REG & 0x1))
;
for (i = 0; i < 64; i++)
FLASH_BASE[(USER_PAGE_NUM * 64) + i] = USER_PAGE[i];
FLASH_CMD_REG = FLASH_CMD_WRITE;
while (!(FLASH_STATUS_REG & 0x1))
;
}
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