mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-22 03:03:05 +00:00
35b65dd8ef
Historically, the reset_cpu() function had an `addr` parameter which was
meant to pass in an address of the reset vector location, where the CPU
should reset to. This feature is no longer used anywhere in U-Boot as
all reset_cpu() implementations now ignore the passed value. Generic
code has been added which always calls reset_cpu() with `0` which means
this feature can no longer be used easily anyway.
Over time, many implementations seem to have "misunderstood" the
existence of this parameter as a way to customize/parameterize the reset
(e.g. COLD vs WARM resets). As this is not properly supported, the
code will almost always not do what it is intended to (because all
call-sites just call reset_cpu() with 0).
To avoid confusion and to clean up the codebase from unused left-overs
of the past, remove the `addr` parameter entirely. Code which intends
to support different kinds of resets should be rewritten as a sysreset
driver instead.
This transformation was done with the following coccinelle patch:
@@
expression argvalue;
@@
- reset_cpu(argvalue)
+ reset_cpu()
@@
identifier argname;
type argtype;
@@
- reset_cpu(argtype argname)
+ reset_cpu(void)
{ ... }
Signed-off-by: Harald Seiler <hws@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
36 lines
846 B
C
36 lines
846 B
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2010 Samsung Electronics.
|
|
* Minkyu Kang <mk7.kang@samsung.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <cpu_func.h>
|
|
#include <asm/cache.h>
|
|
#include <asm/io.h>
|
|
#include <asm/system.h>
|
|
|
|
#ifdef CONFIG_TARGET_ESPRESSO7420
|
|
/*
|
|
* Exynos7420 uses CPU0 of Cluster-1 as boot CPU. Due to this, branch_if_master
|
|
* fails to identify as the boot CPU as the master CPU. As temporary workaround,
|
|
* setup the slave CPU boot address as "_main".
|
|
*/
|
|
extern void _main(void);
|
|
void *secondary_boot_addr = (void *)_main;
|
|
#endif /* CONFIG_TARGET_ESPRESSO7420 */
|
|
|
|
void reset_cpu(void)
|
|
{
|
|
#ifdef CONFIG_CPU_V7A
|
|
writel(0x1, samsung_get_base_swreset());
|
|
#endif
|
|
}
|
|
|
|
#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
|