u-boot/drivers/bootcount/bootcount.c
Simon Glass 1eb69ae498 common: Move ARM cache operations out of common.h
These functions are CPU-related and do not use driver model. Move them to
cpu_func.h

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02 18:24:58 -05:00

51 lines
1.4 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2010-2012
* Stefan Roese, DENX Software Engineering, sr@denx.de.
*/
#include <bootcount.h>
#include <cpu_func.h>
#include <linux/compiler.h>
/* Now implement the generic default functions */
__weak void bootcount_store(ulong a)
{
void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR;
uintptr_t flush_start = rounddown(CONFIG_SYS_BOOTCOUNT_ADDR,
CONFIG_SYS_CACHELINE_SIZE);
uintptr_t flush_end;
#if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
raw_bootcount_store(reg, (CONFIG_SYS_BOOTCOUNT_MAGIC & 0xffff0000) | a);
flush_end = roundup(CONFIG_SYS_BOOTCOUNT_ADDR + 4,
CONFIG_SYS_CACHELINE_SIZE);
#else
raw_bootcount_store(reg, a);
raw_bootcount_store(reg + 4, CONFIG_SYS_BOOTCOUNT_MAGIC);
flush_end = roundup(CONFIG_SYS_BOOTCOUNT_ADDR + 8,
CONFIG_SYS_CACHELINE_SIZE);
#endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD */
flush_dcache_range(flush_start, flush_end);
}
__weak ulong bootcount_load(void)
{
void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR;
#if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
u32 tmp = raw_bootcount_load(reg);
if ((tmp & 0xffff0000) != (CONFIG_SYS_BOOTCOUNT_MAGIC & 0xffff0000))
return 0;
else
return (tmp & 0x0000ffff);
#else
if (raw_bootcount_load(reg + 4) != CONFIG_SYS_BOOTCOUNT_MAGIC)
return 0;
else
return raw_bootcount_load(reg);
#endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD) */
}