mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 13:14:27 +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>
38 lines
1 KiB
C
38 lines
1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (C) 2019 Stephan Gerhold <stephan@gerhold.net>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <cpu_func.h>
|
|
#include <asm/armv7.h>
|
|
#include <asm/cache.h>
|
|
#include <asm/pl310.h>
|
|
|
|
#define PL310_WAY_MASK 0xff
|
|
|
|
#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
|
|
void enable_caches(void)
|
|
{
|
|
/* Enable D-cache. I-cache is already enabled in start.S */
|
|
dcache_enable();
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_SYS_L2_PL310
|
|
void v7_outer_cache_disable(void)
|
|
{
|
|
struct pl310_regs *const pl310 = (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
|
|
|
|
/*
|
|
* Linux expects the L2 cache to be turned off by the bootloader.
|
|
* Otherwise, it fails very early (shortly after decompressing the kernel).
|
|
*
|
|
* On U8500, the L2 cache can be only turned on/off from the secure world.
|
|
* Instead, prevent usage of the L2 cache by locking all ways.
|
|
* The kernel needs to unlock them to make the L2 cache work again.
|
|
*/
|
|
writel(PL310_WAY_MASK, &pl310->pl310_lockdown_dbase);
|
|
writel(PL310_WAY_MASK, &pl310->pl310_lockdown_ibase);
|
|
}
|
|
#endif
|