mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-12 07:57:21 +00:00
36bf446b64
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>
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2010,2011
|
|
* Vladimir Khusainov, Emcraft Systems, vlad@emcraft.com
|
|
*
|
|
* (C) Copyright 2015
|
|
* Kamil Lulko, <kamil.lulko@gmail.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <cpu_func.h>
|
|
#include <irq_func.h>
|
|
#include <asm/io.h>
|
|
#include <asm/armv7m.h>
|
|
|
|
/*
|
|
* This is called right before passing control to
|
|
* the Linux kernel point.
|
|
*/
|
|
int cleanup_before_linux(void)
|
|
{
|
|
/*
|
|
* this function is called just before we call linux
|
|
* it prepares the processor for linux
|
|
*
|
|
* disable interrupt and turn off caches etc ...
|
|
*/
|
|
disable_interrupts();
|
|
/*
|
|
* turn off D-cache
|
|
* dcache_disable() in turn flushes the d-cache
|
|
* MPU is still enabled & can't be disabled as the u-boot
|
|
* code might be running in sdram which by default is not
|
|
* executable area.
|
|
*/
|
|
dcache_disable();
|
|
/* invalidate to make sure no cache line gets dirty between
|
|
* dcache flushing and disabling dcache */
|
|
invalidate_dcache_all();
|
|
|
|
icache_disable();
|
|
invalidate_icache_all();
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Perform the low-level reset.
|
|
*/
|
|
void reset_cpu(ulong addr)
|
|
{
|
|
/*
|
|
* Perform reset but keep priority group unchanged.
|
|
*/
|
|
writel((V7M_AIRCR_VECTKEY << V7M_AIRCR_VECTKEY_SHIFT)
|
|
| (V7M_SCB->aircr & V7M_AIRCR_PRIGROUP_MSK)
|
|
| V7M_AIRCR_SYSRESET, &V7M_SCB->aircr);
|
|
}
|