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 <init.h>
13 #include <net.h>
14 #include <vsprintf.h>
15 #include <watchdog.h>
16 #include <command.h>
17 #include <netdev.h>
18 #include <asm/global_data.h>
19
20 #include <asm/immap.h>
21 #include <asm/io.h>
22
23 DECLARE_GLOBAL_DATA_PTR;
24
do_reset(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])25 int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
26 {
27 ccm_t *ccm = (ccm_t *) MMAP_CCM;
28
29 out_8(&ccm->rcr, CCM_RCR_SOFTRST);
30 /* we don't return! */
31 return 0;
32 }
33
34 #if defined(CONFIG_DISPLAY_CPUINFO)
print_cpuinfo(void)35 int print_cpuinfo(void)
36 {
37 ccm_t *ccm = (ccm_t *) MMAP_CCM;
38 u16 msk;
39 u16 id = 0;
40 u8 ver;
41
42 puts("CPU: ");
43 msk = (in_be16(&ccm->cir) >> 6);
44 ver = (in_be16(&ccm->cir) & 0x003f);
45 switch (msk) {
46 case 0x31:
47 id = 5235;
48 break;
49 }
50
51 if (id) {
52 char buf1[32], buf2[32];
53
54 printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk,
55 ver);
56 printf(" CPU CLK %s MHz BUS CLK %s MHz\n",
57 strmhz(buf1, gd->cpu_clk),
58 strmhz(buf2, gd->bus_clk));
59 }
60
61 return 0;
62 };
63 #endif /* CONFIG_DISPLAY_CPUINFO */
64
65 #if defined(CONFIG_WATCHDOG)
66 /* Called by macro WATCHDOG_RESET */
watchdog_reset(void)67 void watchdog_reset(void)
68 {
69 wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
70
71 /* Count register */
72 out_be16(&wdp->sr, 0x5555);
73 asm("nop");
74 out_be16(&wdp->sr, 0xaaaa);
75 }
76
watchdog_disable(void)77 int watchdog_disable(void)
78 {
79 wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
80
81 /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
82 /* halted watchdog timer */
83 setbits_be16(&wdp->cr, WTM_WCR_HALTED);
84
85 puts("WATCHDOG:disabled\n");
86 return (0);
87 }
88
watchdog_init(void)89 int watchdog_init(void)
90 {
91 wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
92 u32 wdog_module = 0;
93
94 /* set timeout and enable watchdog */
95 wdog_module = ((CONFIG_SYS_CLK / CONFIG_SYS_HZ) * CONFIG_WATCHDOG_TIMEOUT);
96 wdog_module |= (wdog_module / 8192);
97 out_be16(&wdp->mr, wdog_module);
98
99 out_be16(&wdp->cr, WTM_WCR_EN);
100 puts("WATCHDOG:enabled\n");
101
102 return (0);
103 }
104 #endif /* CONFIG_WATCHDOG */
105
106 #if defined(CONFIG_MCFFEC)
107 /* Default initializations for MCFFEC controllers. To override,
108 * create a board-specific function called:
109 * int board_eth_init(struct bd_info *bis)
110 */
111
cpu_eth_init(struct bd_info * bis)112 int cpu_eth_init(struct bd_info *bis)
113 {
114 return mcffec_initialize(bis);
115 }
116 #endif
117