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 * SPDX-License-Identifier: GPL-2.0+ 10 */ 11 12 #include <common.h> 13 #include <watchdog.h> 14 #include <command.h> 15 #include <netdev.h> 16 17 #include <asm/immap.h> 18 #include <asm/io.h> 19 20 DECLARE_GLOBAL_DATA_PTR; 21 22 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 23 { 24 ccm_t *ccm = (ccm_t *) MMAP_CCM; 25 26 out_8(&ccm->rcr, CCM_RCR_SOFTRST); 27 /* we don't return! */ 28 return 0; 29 } 30 31 int checkcpu(void) 32 { 33 ccm_t *ccm = (ccm_t *) MMAP_CCM; 34 u16 msk; 35 u16 id = 0; 36 u8 ver; 37 38 puts("CPU: "); 39 msk = (in_be16(&ccm->cir) >> 6); 40 ver = (in_be16(&ccm->cir) & 0x003f); 41 switch (msk) { 42 case 0x31: 43 id = 5235; 44 break; 45 } 46 47 if (id) { 48 char buf1[32], buf2[32]; 49 50 printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk, 51 ver); 52 printf(" CPU CLK %s MHz BUS CLK %s MHz\n", 53 strmhz(buf1, gd->cpu_clk), 54 strmhz(buf2, gd->bus_clk)); 55 } 56 57 return 0; 58 }; 59 60 #if defined(CONFIG_WATCHDOG) 61 /* Called by macro WATCHDOG_RESET */ 62 void watchdog_reset(void) 63 { 64 wdog_t *wdp = (wdog_t *) (MMAP_WDOG); 65 66 /* Count register */ 67 out_be16(&wdp->sr, 0x5555); 68 asm("nop"); 69 out_be16(&wdp->sr, 0xaaaa); 70 } 71 72 int watchdog_disable(void) 73 { 74 wdog_t *wdp = (wdog_t *) (MMAP_WDOG); 75 76 /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */ 77 /* halted watchdog timer */ 78 setbits_be16(&wdp->cr, WTM_WCR_HALTED); 79 80 puts("WATCHDOG:disabled\n"); 81 return (0); 82 } 83 84 int watchdog_init(void) 85 { 86 wdog_t *wdp = (wdog_t *) (MMAP_WDOG); 87 u32 wdog_module = 0; 88 89 /* set timeout and enable watchdog */ 90 wdog_module = ((CONFIG_SYS_CLK / CONFIG_SYS_HZ) * CONFIG_WATCHDOG_TIMEOUT); 91 wdog_module |= (wdog_module / 8192); 92 out_be16(&wdp->mr, wdog_module); 93 94 out_be16(&wdp->cr, WTM_WCR_EN); 95 puts("WATCHDOG:enabled\n"); 96 97 return (0); 98 } 99 #endif /* CONFIG_WATCHDOG */ 100 101 #if defined(CONFIG_MCFFEC) 102 /* Default initializations for MCFFEC controllers. To override, 103 * create a board-specific function called: 104 * int board_eth_init(bd_t *bis) 105 */ 106 107 int cpu_eth_init(bd_t *bis) 108 { 109 return mcffec_initialize(bis); 110 } 111 #endif 112