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/*
* (C) Copyright 2010
* Reinhard Meyer, reinhard.meyer@emk-elektronik.de
* (C) Copyright 2009
* Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* (C) Copyright 2013
* Bo Shen <voice.shen@atmel.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include <asm/arch/at91_pit.h>
#include <asm/arch/at91_gpbr.h>
#include <asm/arch/clk.h>
#ifndef CONFIG_SYS_AT91_MAIN_CLOCK
#define CONFIG_SYS_AT91_MAIN_CLOCK 0
#endif
int arch_cpu_init(void)
{
return at91_clock_init(CONFIG_SYS_AT91_MAIN_CLOCK);
}
void arch_preboot_os(void)
{
ulong cpiv;
at91_pit_t *pit = (at91_pit_t *)ATMEL_BASE_PIT;
cpiv = AT91_PIT_MR_PIV_MASK(readl(&pit->piir));
/*
* Disable PITC
* Add 0x1000 to current counter to stop it faster
* without waiting for wrapping back to 0
*/
writel(cpiv + 0x1000, &pit->mr);
}
#if defined(CONFIG_DISPLAY_CPUINFO)
int print_cpuinfo(void)
{
char buf[32];
printf("CPU: %s\n", get_cpu_name());
printf("Crystal frequency: %8s MHz\n",
strmhz(buf, get_main_clk_rate()));
printf("CPU clock : %8s MHz\n",
strmhz(buf, get_cpu_clk_rate()));
printf("Master clock : %8s MHz\n",
strmhz(buf, get_mck_clk_rate()));
return 0;
}
#endif
void enable_caches(void)
{
icache_enable();
dcache_enable();
}
#define ATMEL_CHIPID_CIDR_VERSION 0x1f
unsigned int get_chip_id(void)
{
return readl(ATMEL_CHIPID_CIDR) & ~ATMEL_CHIPID_CIDR_VERSION;
}
unsigned int get_extension_chip_id(void)
{
return readl(ATMEL_CHIPID_EXID);
}
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