1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * (C) Copyright 2010
4 * Reinhard Meyer, reinhard.meyer@emk-elektronik.de
5 * (C) Copyright 2009
6 * Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
7 */
8
9#include <common.h>
10#include <init.h>
11#include <vsprintf.h>
12#include <asm/io.h>
13#include <asm/arch/hardware.h>
14#include <asm/arch/at91_pit.h>
15#include <asm/arch/at91_gpbr.h>
16#include <asm/arch/clk.h>
17
18#ifndef CFG_SYS_AT91_MAIN_CLOCK
19#define CFG_SYS_AT91_MAIN_CLOCK 0
20#endif
21
22int arch_cpu_init(void)
23{
24	return at91_clock_init(CFG_SYS_AT91_MAIN_CLOCK);
25}
26
27void arch_preboot_os(void)
28{
29	ulong cpiv;
30	at91_pit_t *pit = (at91_pit_t *) ATMEL_BASE_PIT;
31
32	cpiv = AT91_PIT_MR_PIV_MASK(readl(&pit->piir));
33
34	/*
35	 * Disable PITC
36	 * Add 0x1000 to current counter to stop it faster
37	 * without waiting for wrapping back to 0
38	 */
39	writel(cpiv + 0x1000, &pit->mr);
40}
41
42#if defined(CONFIG_DISPLAY_CPUINFO)
43int print_cpuinfo(void)
44{
45	char __maybe_unused buf[32];
46
47	printf("CPU: %s\n", ATMEL_CPU_NAME);
48	printf("Crystal frequency: %8s MHz\n",
49					strmhz(buf, get_main_clk_rate()));
50	printf("CPU clock        : %8s MHz\n",
51					strmhz(buf, get_cpu_clk_rate()));
52	printf("Master clock     : %8s MHz\n",
53					strmhz(buf, get_mck_clk_rate()));
54
55	return 0;
56}
57#endif
58