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,
27 /* There are two tests for dsPIC currently implemented:
28 * 1. dsPIC ready test. Done in board_early_init_f(). Only result verified here.
29 * 2. dsPIC POST result test. This test gets dsPIC POST codes and version.
37 DECLARE_GLOBAL_DATA_PTR
;
39 #define DSPIC_POST_ERROR_REG 0x800
40 #define DSPIC_SYS_ERROR_REG 0x802
41 #define DSPIC_VERSION_REG 0x804
43 #if CONFIG_POST & CONFIG_SYS_POST_BSPEC1
45 /* Verify that dsPIC ready test done early at hw init passed ok */
46 int dspic_init_post_test(int flags
)
48 if (in_be32((void *)CONFIG_SYS_DSPIC_TEST_ADDR
) & CONFIG_SYS_DSPIC_TEST_MASK
) {
49 post_log("dsPIC init test failed\n");
56 #endif /* CONFIG_POST & CONFIG_SYS_POST_BSPEC1 */
58 #if CONFIG_POST & CONFIG_SYS_POST_BSPEC2
59 /* Read a register from the dsPIC. */
60 int dspic_read(ushort reg
)
64 if (i2c_read(CONFIG_SYS_I2C_DSPIC_IO_ADDR
, reg
, 2, buf
, 2))
67 return (uint
)((buf
[0] << 8) | buf
[1]);
70 /* Verify error codes regs, display version */
71 int dspic_post_test(int flags
)
77 data
= dspic_read(DSPIC_VERSION_REG
);
79 post_log("dsPIC : failed read version\n");
82 post_log("dsPIC version: %u.%u\n",
83 (data
>> 8) & 0xFF, data
& 0xFF);
86 data
= dspic_read(DSPIC_POST_ERROR_REG
);
87 if (data
!= 0) ret
= 1;
89 post_log("dsPIC : failed read POST code\n");
91 post_log("dsPIC POST code 0x%04X\n", data
);
94 data
= dspic_read(DSPIC_SYS_ERROR_REG
);
96 post_log("dsPIC : failed read system error\n");
99 post_log("dsPIC SYS-ERROR code: 0x%04X\n", data
);
105 #endif /* CONFIG_POST & CONFIG_SYS_POST_BSPEC2 */