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u-boot-megous/arch/arm/mach-at91/armv7/cpu.c
Tom Rini d678a59d2d Revert "Merge patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet""
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay
Ethernet"' I failed to notice that b4 noticed it was based on next and
so took that as the base commit and merged that part of next to master.

This reverts commit c8ffd1356d, reversing
changes made to 2ee6f3a5f7.

Reported-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Tom Rini <trini@konsulko.com>
2024-05-19 08:16:36 -06:00

85 lines
1.7 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (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>
*/
#include <common.h>
#include <cpu_func.h>
#include <init.h>
#include <vsprintf.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 CFG_SYS_AT91_MAIN_CLOCK
#define CFG_SYS_AT91_MAIN_CLOCK 0
#endif
int arch_cpu_init(void)
{
#if defined(CONFIG_CLK_CCF) || defined(CONFIG_CLK_SCMI)
return 0;
#else
return at91_clock_init(CFG_SYS_AT91_MAIN_CLOCK);
#endif
}
void arch_preboot_os(void)
{
#if (IS_ENABLED(CONFIG_ATMEL_PIT_TIMER))
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);
#endif
}
#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);
}