mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-19 03:08:31 +00:00
fe9805fc7f
1947c2d2a0introduces cache line flushes for the bootcounter, but if the start address is not aligned then the flush causes warnings of the form: CACHE: Misaligned operation at range [4030b7fc, 4030b83c] Align both the start and end of the buffer (possibly crossing multiple lines). Fixes:1947c2d2a0("bootcount: flush after storing the bootcounter") Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com> Acked-by: Stefano Babic <sbabic@denx.de>
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2010-2012
|
|
* Stefan Roese, DENX Software Engineering, sr@denx.de.
|
|
*/
|
|
|
|
#include <bootcount.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, (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, 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) != (BOOTCOUNT_MAGIC & 0xffff0000))
|
|
return 0;
|
|
else
|
|
return (tmp & 0x0000ffff);
|
|
#else
|
|
if (raw_bootcount_load(reg + 4) != BOOTCOUNT_MAGIC)
|
|
return 0;
|
|
else
|
|
return raw_bootcount_load(reg);
|
|
#endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD) */
|
|
}
|