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
do_reset(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])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
checkcpu(void)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 */
watchdog_reset(void)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
watchdog_disable(void)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
watchdog_init(void)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
cpu_eth_init(bd_t * bis)107 int cpu_eth_init(bd_t *bis)
108 {
109 return mcffec_initialize(bis);
110 }
111 #endif
112