1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * 4 * (C) Copyright 2000-2003 5 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 6 * 7 * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc. 8 * TsiChung Liew (Tsi-Chung.Liew@freescale.com) 9 */ 10 11 #include <common.h> 12 #include <watchdog.h> 13 #include <command.h> 14 #include <netdev.h> 15 16 #include <asm/immap.h> 17 #include <asm/io.h> 18 19 DECLARE_GLOBAL_DATA_PTR; 20 21 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 22 { 23 ccm_t *ccm = (ccm_t *) MMAP_CCM; 24 25 out_8(&ccm->rcr, CCM_RCR_SOFTRST); 26 /* we don't return! */ 27 return 0; 28 } 29 30 #if defined(CONFIG_DISPLAY_CPUINFO) 31 int print_cpuinfo(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 #endif /* CONFIG_DISPLAY_CPUINFO */ 60 61 #if defined(CONFIG_WATCHDOG) 62 /* Called by macro WATCHDOG_RESET */ 63 void watchdog_reset(void) 64 { 65 wdog_t *wdp = (wdog_t *) (MMAP_WDOG); 66 67 /* Count register */ 68 out_be16(&wdp->sr, 0x5555); 69 asm("nop"); 70 out_be16(&wdp->sr, 0xaaaa); 71 } 72 73 int watchdog_disable(void) 74 { 75 wdog_t *wdp = (wdog_t *) (MMAP_WDOG); 76 77 /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */ 78 /* halted watchdog timer */ 79 setbits_be16(&wdp->cr, WTM_WCR_HALTED); 80 81 puts("WATCHDOG:disabled\n"); 82 return (0); 83 } 84 85 int watchdog_init(void) 86 { 87 wdog_t *wdp = (wdog_t *) (MMAP_WDOG); 88 u32 wdog_module = 0; 89 90 /* set timeout and enable watchdog */ 91 wdog_module = ((CONFIG_SYS_CLK / CONFIG_SYS_HZ) * CONFIG_WATCHDOG_TIMEOUT); 92 wdog_module |= (wdog_module / 8192); 93 out_be16(&wdp->mr, wdog_module); 94 95 out_be16(&wdp->cr, WTM_WCR_EN); 96 puts("WATCHDOG:enabled\n"); 97 98 return (0); 99 } 100 #endif /* CONFIG_WATCHDOG */ 101 102 #if defined(CONFIG_MCFFEC) 103 /* Default initializations for MCFFEC controllers. To override, 104 * create a board-specific function called: 105 * int board_eth_init(bd_t *bis) 106 */ 107 108 int cpu_eth_init(bd_t *bis) 109 { 110 return mcffec_initialize(bis); 111 } 112 #endif 113