1 /* 2 * 3 * (C) Copyright 2000-2003 4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 5 * 6 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. 7 * TsiChung Liew (Tsi-Chung.Liew@freescale.com) 8 * 9 * See file CREDITS for list of people who contributed to this 10 * project. 11 * 12 * This program is free software; you can redistribute it and/or 13 * modify it under the terms of the GNU General Public License as 14 * published by the Free Software Foundation; either version 2 of 15 * the License, or (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 25 * MA 02111-1307 USA 26 */ 27 28 #include <common.h> 29 #include <watchdog.h> 30 #include <command.h> 31 #include <netdev.h> 32 33 #include <asm/immap.h> 34 35 DECLARE_GLOBAL_DATA_PTR; 36 37 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 38 { 39 volatile ccm_t *ccm = (ccm_t *) MMAP_CCM; 40 41 ccm->rcr = CCM_RCR_SOFTRST; 42 /* we don't return! */ 43 return 0; 44 }; 45 46 int checkcpu(void) 47 { 48 volatile ccm_t *ccm = (ccm_t *) MMAP_CCM; 49 u16 msk; 50 u16 id = 0; 51 u8 ver; 52 53 puts("CPU: "); 54 msk = (ccm->cir >> 6); 55 ver = (ccm->cir & 0x003f); 56 switch (msk) { 57 case 0x31: 58 id = 5235; 59 break; 60 } 61 62 if (id) { 63 char buf1[32], buf2[32]; 64 65 printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk, 66 ver); 67 printf(" CPU CLK %s MHz BUS CLK %s MHz\n", 68 strmhz(buf1, gd->cpu_clk), 69 strmhz(buf2, gd->bus_clk)); 70 } 71 72 return 0; 73 }; 74 75 #if defined(CONFIG_WATCHDOG) 76 /* Called by macro WATCHDOG_RESET */ 77 void watchdog_reset(void) 78 { 79 volatile wdog_t *wdp = (wdog_t *) (MMAP_WDOG); 80 81 wdp->sr = 0x5555; /* Count register */ 82 asm("nop"); 83 wdp->sr = 0xAAAA; /* Count register */ 84 } 85 86 int watchdog_disable(void) 87 { 88 volatile wdog_t *wdp = (wdog_t *) (MMAP_WDOG); 89 90 /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */ 91 wdp->cr |= WTM_WCR_HALTED; /* halted watchdog timer */ 92 93 puts("WATCHDOG:disabled\n"); 94 return (0); 95 } 96 97 int watchdog_init(void) 98 { 99 volatile wdog_t *wdp = (wdog_t *) (MMAP_WDOG); 100 u32 wdog_module = 0; 101 102 /* set timeout and enable watchdog */ 103 wdog_module = ((CONFIG_SYS_CLK / CONFIG_SYS_HZ) * CONFIG_WATCHDOG_TIMEOUT); 104 wdog_module |= (wdog_module / 8192); 105 wdp->mr = wdog_module; 106 107 wdp->cr = WTM_WCR_EN; 108 puts("WATCHDOG:enabled\n"); 109 110 return (0); 111 } 112 #endif /* CONFIG_WATCHDOG */ 113 114 #if defined(CONFIG_MCFFEC) 115 /* Default initializations for MCFFEC controllers. To override, 116 * create a board-specific function called: 117 * int board_eth_init(bd_t *bis) 118 */ 119 120 int cpu_eth_init(bd_t *bis) 121 { 122 return mcffec_initialize(bis); 123 } 124 #endif 125