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git.ipfire.org Git - thirdparty/u-boot.git/blob - arch/m68k/cpu/mcf523x/cpu.c
1 // SPDX-License-Identifier: GPL-2.0+
4 * (C) Copyright 2000-2003
5 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
8 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
16 #include <asm/immap.h>
19 DECLARE_GLOBAL_DATA_PTR
;
21 int do_reset(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
23 ccm_t
*ccm
= (ccm_t
*) MMAP_CCM
;
25 out_8(&ccm
->rcr
, CCM_RCR_SOFTRST
);
26 /* we don't return! */
30 #if defined(CONFIG_DISPLAY_CPUINFO)
31 int print_cpuinfo(void)
33 ccm_t
*ccm
= (ccm_t
*) MMAP_CCM
;
39 msk
= (in_be16(&ccm
->cir
) >> 6);
40 ver
= (in_be16(&ccm
->cir
) & 0x003f);
48 char buf1
[32], buf2
[32];
50 printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id
, msk
,
52 printf(" CPU CLK %s MHz BUS CLK %s MHz\n",
53 strmhz(buf1
, gd
->cpu_clk
),
54 strmhz(buf2
, gd
->bus_clk
));
59 #endif /* CONFIG_DISPLAY_CPUINFO */
61 #if defined(CONFIG_WATCHDOG)
62 /* Called by macro WATCHDOG_RESET */
63 void watchdog_reset(void)
65 wdog_t
*wdp
= (wdog_t
*) (MMAP_WDOG
);
68 out_be16(&wdp
->sr
, 0x5555);
70 out_be16(&wdp
->sr
, 0xaaaa);
73 int watchdog_disable(void)
75 wdog_t
*wdp
= (wdog_t
*) (MMAP_WDOG
);
77 /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
78 /* halted watchdog timer */
79 setbits_be16(&wdp
->cr
, WTM_WCR_HALTED
);
81 puts("WATCHDOG:disabled\n");
85 int watchdog_init(void)
87 wdog_t
*wdp
= (wdog_t
*) (MMAP_WDOG
);
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
);
95 out_be16(&wdp
->cr
, WTM_WCR_EN
);
96 puts("WATCHDOG:enabled\n");
100 #endif /* CONFIG_WATCHDOG */
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)
108 int cpu_eth_init(bd_t
*bis
)
110 return mcffec_initialize(bis
);