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/*
* (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com
*
* Developed for DENX Software Engineering GmbH
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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 <common.h>
#ifdef CONFIG_POST
/* There are two tests for dsPIC currently implemented:
* 1. dsPIC ready test. Done in board_early_init_f(). Only result verified here.
* 2. dsPIC POST result test. This test gets dsPIC POST codes and version.
*/
#include <post.h>
#include <i2c.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
#define DSPIC_POST_ERROR_REG 0x800
#define DSPIC_SYS_ERROR_REG 0x802
#define DSPIC_VERSION_REG 0x804
#if CONFIG_POST & CFG_POST_BSPEC1
/* Verify that dsPIC ready test done early at hw init passed ok */
int dspic_init_post_test(int flags)
{
if (in_be32((void *)CFG_DSPIC_TEST_ADDR) & CFG_DSPIC_TEST_MASK) {
post_log("dsPIC init test failed\n");
return 1;
}
return 0;
}
#endif /* CONFIG_POST & CFG_POST_BSPEC1 */
#if CONFIG_POST & CFG_POST_BSPEC2
/* Read a register from the dsPIC. */
int dspic_read(ushort reg)
{
uchar buf[2];
if (i2c_read(CFG_I2C_DSPIC_IO_ADDR, reg, 2, buf, 2))
return -1;
return (uint)((buf[0] << 8) | buf[1]);
}
/* Verify error codes regs, display version */
int dspic_post_test(int flags)
{
int data;
int ret = 0;
post_log("\n");
data = dspic_read(DSPIC_VERSION_REG);
if (data == -1) {
post_log("dsPIC : failed read version\n");
ret = 1;
} else {
post_log("dsPIC version: %u.%u\n",
(data >> 8) & 0xFF, data & 0xFF);
}
data = dspic_read(DSPIC_POST_ERROR_REG);
if (data != 0) ret = 1;
if (data == -1) {
post_log("dsPIC : failed read POST code\n");
} else {
post_log("dsPIC POST code 0x%04X\n", data);
}
data = dspic_read(DSPIC_SYS_ERROR_REG);
if (data != 0) ret = 1;
if (data == -1) {
post_log("dsPIC : failed read system error\n");
} else {
post_log("dsPIC SYS-ERROR code: 0x%04X\n", data);
}
return ret;
}
#endif /* CONFIG_POST & CFG_POST_BSPEC2 */
#endif /* CONFIG_POST */
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