mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-08 22:24:32 +00:00
90526e9fba
Move this header out of the common header. Network support is used in quite a few places but it still does not warrant blanket inclusion. Note that this net.h header itself has quite a lot in it. It could be split into the driver-mode support, functions, structures, checksumming, etc. Signed-off-by: Simon Glass <sjg@chromium.org>
113 lines
2.3 KiB
C
113 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2004 Texas Insturments
|
|
*
|
|
* (C) Copyright 2002
|
|
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
* Marius Groeger <mgroeger@sysgo.de>
|
|
*
|
|
* (C) Copyright 2002
|
|
* Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
|
|
*/
|
|
|
|
/*
|
|
* CPU specific code
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <cpu_func.h>
|
|
#include <irq_func.h>
|
|
#include <asm/cache.h>
|
|
#include <asm/system.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
|
|
*
|
|
* we turn off caches etc ...
|
|
*/
|
|
|
|
disable_interrupts();
|
|
|
|
/* turn off I/D-cache */
|
|
icache_disable();
|
|
dcache_disable();
|
|
/* flush I/D-cache */
|
|
cache_flush();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void cache_flush(void)
|
|
{
|
|
unsigned long i = 0;
|
|
/* clean entire data cache */
|
|
asm volatile("mcr p15, 0, %0, c7, c10, 0" : : "r" (i));
|
|
/* invalidate both caches and flush btb */
|
|
asm volatile("mcr p15, 0, %0, c7, c7, 0" : : "r" (i));
|
|
/* mem barrier to sync things */
|
|
asm volatile("mcr p15, 0, %0, c7, c10, 4" : : "r" (i));
|
|
}
|
|
|
|
#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
|
|
void invalidate_dcache_all(void)
|
|
{
|
|
asm volatile("mcr p15, 0, %0, c7, c6, 0" : : "r" (0));
|
|
}
|
|
|
|
void flush_dcache_all(void)
|
|
{
|
|
asm volatile("mcr p15, 0, %0, c7, c10, 0" : : "r" (0));
|
|
asm volatile("mcr p15, 0, %0, c7, c10, 4" : : "r" (0));
|
|
}
|
|
|
|
void invalidate_dcache_range(unsigned long start, unsigned long stop)
|
|
{
|
|
if (!check_cache_range(start, stop))
|
|
return;
|
|
|
|
while (start < stop) {
|
|
asm volatile("mcr p15, 0, %0, c7, c6, 1" : : "r" (start));
|
|
start += CONFIG_SYS_CACHELINE_SIZE;
|
|
}
|
|
}
|
|
|
|
void flush_dcache_range(unsigned long start, unsigned long stop)
|
|
{
|
|
if (!check_cache_range(start, stop))
|
|
return;
|
|
|
|
while (start < stop) {
|
|
asm volatile("mcr p15, 0, %0, c7, c14, 1" : : "r" (start));
|
|
start += CONFIG_SYS_CACHELINE_SIZE;
|
|
}
|
|
|
|
asm volatile("mcr p15, 0, %0, c7, c10, 4" : : "r" (0));
|
|
}
|
|
|
|
#else /* #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) */
|
|
void invalidate_dcache_all(void)
|
|
{
|
|
}
|
|
|
|
void flush_dcache_all(void)
|
|
{
|
|
}
|
|
#endif /* #if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF) */
|
|
|
|
#if !(CONFIG_IS_ENABLED(SYS_ICACHE_OFF) && CONFIG_IS_ENABLED(SYS_DCACHE_OFF))
|
|
void enable_caches(void)
|
|
{
|
|
#if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
|
|
icache_enable();
|
|
#endif
|
|
#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
|
|
dcache_enable();
|
|
#endif
|
|
}
|
|
#endif
|