xref: /openbmc/u-boot/arch/mips/cpu/cpu.c (revision 7ffce4f1)
1 /*
2  * (C) Copyright 2003
3  * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
4  *
5  * SPDX-License-Identifier:	GPL-2.0+
6  */
7 
8 #include <common.h>
9 #include <command.h>
10 #include <linux/compiler.h>
11 #include <asm/cache.h>
12 #include <asm/mipsregs.h>
13 #include <asm/reboot.h>
14 
15 #ifndef CONFIG_SYSRESET
16 void __weak _machine_restart(void)
17 {
18 	fprintf(stderr, "*** reset failed ***\n");
19 
20 	while (1)
21 		/* NOP */;
22 }
23 
24 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
25 {
26 	_machine_restart();
27 
28 	return 0;
29 }
30 #endif
31 
32 void write_one_tlb(int index, u32 pagemask, u32 hi, u32 low0, u32 low1)
33 {
34 	write_c0_entrylo0(low0);
35 	write_c0_pagemask(pagemask);
36 	write_c0_entrylo1(low1);
37 	write_c0_entryhi(hi);
38 	write_c0_index(index);
39 	tlb_write_indexed();
40 }
41 
42 int arch_cpu_init(void)
43 {
44 	mips_cache_probe();
45 	return 0;
46 }
47