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 <vsprintf.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
31 #if defined(CONFIG_DISPLAY_CPUINFO)
print_cpuinfo(void)32 int print_cpuinfo(void)
33 {
34 ccm_t *ccm = (ccm_t *) MMAP_CCM;
35 u16 msk;
36 u16 id = 0;
37 u8 ver;
38
39 puts("CPU: ");
40 msk = (in_be16(&ccm->cir) >> 6);
41 ver = (in_be16(&ccm->cir) & 0x003f);
42 switch (msk) {
43 case 0x31:
44 id = 5235;
45 break;
46 }
47
48 if (id) {
49 char buf1[32], buf2[32];
50
51 printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk,
52 ver);
53 printf(" CPU CLK %s MHz BUS CLK %s MHz\n",
54 strmhz(buf1, gd->cpu_clk),
55 strmhz(buf2, gd->bus_clk));
56 }
57
58 return 0;
59 };
60 #endif /* CONFIG_DISPLAY_CPUINFO */
61
62 #if defined(CONFIG_WATCHDOG)
63 /* Called by macro WATCHDOG_RESET */
watchdog_reset(void)64 void watchdog_reset(void)
65 {
66 wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
67
68 /* Count register */
69 out_be16(&wdp->sr, 0x5555);
70 asm("nop");
71 out_be16(&wdp->sr, 0xaaaa);
72 }
73
watchdog_disable(void)74 int watchdog_disable(void)
75 {
76 wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
77
78 /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
79 /* halted watchdog timer */
80 setbits_be16(&wdp->cr, WTM_WCR_HALTED);
81
82 puts("WATCHDOG:disabled\n");
83 return (0);
84 }
85
watchdog_init(void)86 int watchdog_init(void)
87 {
88 wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
89 u32 wdog_module = 0;
90
91 /* set timeout and enable watchdog */
92 wdog_module = ((CONFIG_SYS_CLK / CONFIG_SYS_HZ) * CONFIG_WATCHDOG_TIMEOUT);
93 wdog_module |= (wdog_module / 8192);
94 out_be16(&wdp->mr, wdog_module);
95
96 out_be16(&wdp->cr, WTM_WCR_EN);
97 puts("WATCHDOG:enabled\n");
98
99 return (0);
100 }
101 #endif /* CONFIG_WATCHDOG */
102
103 #if defined(CONFIG_MCFFEC)
104 /* Default initializations for MCFFEC controllers. To override,
105 * create a board-specific function called:
106 * int board_eth_init(bd_t *bis)
107 */
108
cpu_eth_init(bd_t * bis)109 int cpu_eth_init(bd_t *bis)
110 {
111 return mcffec_initialize(bis);
112 }
113 #endif
114