u-boot/arch/arm/cpu/sa1100/cpu.c
Simon Glass 36bf446b64 common: Move enable/disable_interrupts out of common.h
Move these two functions into the irq_funcs.h header file. Also move
interrupt_handler_t as this is used by the irq_install_handler() function.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02 18:25:01 -05:00

65 lines
1.1 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Alex Zuepke <azu@sysgo.de>
*/
/*
* CPU specific code
*/
#include <common.h>
#include <command.h>
#include <cpu_func.h>
#include <irq_func.h>
#include <asm/system.h>
#include <asm/io.h>
static void cache_flush(void);
int cleanup_before_linux (void)
{
/*
* this function is called just before we call linux
* it prepares the processor for linux
*
* just disable everything that can disturb booting linux
*/
disable_interrupts();
/* turn off I-cache */
icache_disable();
dcache_disable();
/* flush I-cache */
cache_flush();
return (0);
}
/* flush I/D-cache */
static void cache_flush (void)
{
unsigned long i = 0;
asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
}
#define RST_BASE 0x90030000
#define RSRR 0x00
#define RCSR 0x04
__attribute__((noreturn)) void reset_cpu(ulong addr __attribute__((unused)))
{
/* repeat endlessly */
while (1) {
writel(0, RST_BASE + RCSR);
writel(1, RST_BASE + RSRR);
}
}