1 /* 2 * 3 * (C) Copyright 2000-2003 4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 5 * 6 * Copyright (C) 2004-2007, 2012 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 #include <asm/io.h> 35 36 DECLARE_GLOBAL_DATA_PTR; 37 38 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 39 { 40 ccm_t *ccm = (ccm_t *) MMAP_CCM; 41 42 out_8(&ccm->rcr, CCM_RCR_SOFTRST); 43 /* we don't return! */ 44 return 0; 45 } 46 47 int checkcpu(void) 48 { 49 ccm_t *ccm = (ccm_t *) MMAP_CCM; 50 u16 msk; 51 u16 id = 0; 52 u8 ver; 53 54 puts("CPU: "); 55 msk = (in_be16(&ccm->cir) >> 6); 56 ver = (in_be16(&ccm->cir) & 0x003f); 57 switch (msk) { 58 case 0x31: 59 id = 5235; 60 break; 61 } 62 63 if (id) { 64 char buf1[32], buf2[32]; 65 66 printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk, 67 ver); 68 printf(" CPU CLK %s MHz BUS CLK %s MHz\n", 69 strmhz(buf1, gd->cpu_clk), 70 strmhz(buf2, gd->bus_clk)); 71 } 72 73 return 0; 74 }; 75 76 #if defined(CONFIG_WATCHDOG) 77 /* Called by macro WATCHDOG_RESET */ 78 void watchdog_reset(void) 79 { 80 wdog_t *wdp = (wdog_t *) (MMAP_WDOG); 81 82 /* Count register */ 83 out_be16(&wdp->sr, 0x5555); 84 asm("nop"); 85 out_be16(&wdp->sr, 0xaaaa); 86 } 87 88 int watchdog_disable(void) 89 { 90 wdog_t *wdp = (wdog_t *) (MMAP_WDOG); 91 92 /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */ 93 /* halted watchdog timer */ 94 setbits_be16(&wdp->cr, WTM_WCR_HALTED); 95 96 puts("WATCHDOG:disabled\n"); 97 return (0); 98 } 99 100 int watchdog_init(void) 101 { 102 wdog_t *wdp = (wdog_t *) (MMAP_WDOG); 103 u32 wdog_module = 0; 104 105 /* set timeout and enable watchdog */ 106 wdog_module = ((CONFIG_SYS_CLK / CONFIG_SYS_HZ) * CONFIG_WATCHDOG_TIMEOUT); 107 wdog_module |= (wdog_module / 8192); 108 out_be16(&wdp->mr, wdog_module); 109 110 out_be16(&wdp->cr, WTM_WCR_EN); 111 puts("WATCHDOG:enabled\n"); 112 113 return (0); 114 } 115 #endif /* CONFIG_WATCHDOG */ 116 117 #if defined(CONFIG_MCFFEC) 118 /* Default initializations for MCFFEC controllers. To override, 119 * create a board-specific function called: 120 * int board_eth_init(bd_t *bis) 121 */ 122 123 int cpu_eth_init(bd_t *bis) 124 { 125 return mcffec_initialize(bis); 126 } 127 #endif 128