/*
* Copyright (C) 2006 Martin Decky
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <arch/drivers/cuda.h>
#include <arch/asm.h>
#include <console/chardev.h>
#include <console/console.h>
#define CUDA_PACKET 0x01
#define CUDA_POWERDOWN 0x0a
#define RS 0x200
#define B (0 * RS)
#define A (1 * RS)
#define SR (10 * RS)
#define ACR (11 * RS)
#define SR_OUT 0x10
#define TACK 0x10
#define TIP 0x20
static volatile __u8 *cuda = (__u8 *) 0xf2000000;
void cuda_init(void)
{
}
static void cuda_packet(const __u8 data)
{
cuda[B] = cuda[B] | TIP;
cuda[ACR] = cuda[ACR] | SR_OUT;
cuda[SR] = CUDA_PACKET;
cuda[B] = cuda[B] & ~TIP;
cuda[ACR] = cuda[ACR] | SR_OUT;
cuda[SR] = data;
cuda[B] = cuda[B] | TACK;
cuda[B] = cuda[B] | TIP;
}
void cpu_halt(void) {
cuda_packet(CUDA_POWERDOWN);
cpu_sleep();
}