2 * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com
4 * Developed for DENX Software Engineering GmbH
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 /* There are two tests for dsPIC currently implemented:
30 * 1. dsPIC ready test. Done in board_early_init_f(). Only result verified here.
31 * 2. dsPIC POST result test. This test gets dsPIC POST codes and version.
39 DECLARE_GLOBAL_DATA_PTR;
41 #define DSPIC_POST_ERROR_REG 0x800
42 #define DSPIC_SYS_ERROR_REG 0x802
43 #define DSPIC_VERSION_REG 0x804
45 #if CONFIG_POST & CFG_POST_BSPEC1
47 /* Verify that dsPIC ready test done early at hw init passed ok */
48 int dspic_init_post_test(int flags)
50 if (in_be32((void *)CFG_DSPIC_TEST_ADDR) & CFG_DSPIC_TEST_MASK) {
51 post_log("dsPIC init test failed\n");
58 #endif /* CONFIG_POST & CFG_POST_BSPEC1 */
60 #if CONFIG_POST & CFG_POST_BSPEC2
61 /* Read a register from the dsPIC. */
62 int dspic_read(ushort reg)
66 if (i2c_read(CFG_I2C_DSPIC_IO_ADDR, reg, 2, buf, 2))
69 return (uint)((buf[0] << 8) | buf[1]);
72 /* Verify error codes regs, display version */
73 int dspic_post_test(int flags)
79 data = dspic_read(DSPIC_VERSION_REG);
81 post_log("dsPIC : failed read version\n");
84 post_log("dsPIC version: %u.%u\n",
85 (data >> 8) & 0xFF, data & 0xFF);
88 data = dspic_read(DSPIC_POST_ERROR_REG);
89 if (data != 0) ret = 1;
91 post_log("dsPIC : failed read POST code\n");
93 post_log("dsPIC POST code 0x%04X\n", data);
96 data = dspic_read(DSPIC_SYS_ERROR_REG);
98 post_log("dsPIC : failed read system error\n");
100 } else if (data != 0) {
101 post_log("dsPIC SYS-ERROR code: 0x%04X\n", data);
108 #endif /* CONFIG_POST & CFG_POST_BSPEC2 */
109 #endif /* CONFIG_POST */