| /* |
| * (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 */ |
| |