u-boot/arch/arm/cpu/arm926ejs/at91/cpu.c
Stefan Roese 0044c42e94 Consolidate bootcount code into drivers/bootcount
This patch moves all bootcount implementations into a common
directory: drivers/bootcount. The generic bootcount driver
is now usable not only by powerpc platforms, but others as well.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Valentin Longchamp <valentin.longchamp@keymile.com>
Cc: Christian Riesch <christian.riesch@omicron.at>
Cc: Manfred Rudigier <manfred.rudigier@omicron.at>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Reinhard Meyer <reinhard.meyer@emk-elektronik.de>
Tested-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Tested-by: Christian Riesch <christian.riesch@omicron.at>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2012-09-01 14:26:02 +02:00

73 lines
1.9 KiB
C

/*
* (C) Copyright 2010
* Reinhard Meyer, reinhard.meyer@emk-elektronik.de
* (C) Copyright 2009
* Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include <asm/arch/at91_pmc.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", ATMEL_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