u-boot/drivers/bootcount/bootcount.c
Heiko Schocher 98f705c9ce powerpc: remove 4xx support
There was for long time no activity in the 4xx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in 4xx,
so remove it.

Signed-off-by: Heiko Schocher <hs@denx.de>
2017-07-03 17:35:28 -04:00

57 lines
1.5 KiB
C

/*
* (C) Copyright 2010-2012
* Stefan Roese, DENX Software Engineering, sr@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <bootcount.h>
#include <linux/compiler.h>
/*
* Only override CONFIG_SYS_BOOTCOUNT_ADDR if not already defined. This
* way, some boards can define it directly in their config header.
*/
#if !defined(CONFIG_SYS_BOOTCOUNT_ADDR)
#if defined(CONFIG_QE)
#include <linux/immap_qe.h>
#define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_IMMR + 0x110000 + \
QE_MURAM_SIZE - 2 * sizeof(u32))
#endif /* defined(CONFIG_QE) */
#endif /* !defined(CONFIG_SYS_BOOTCOUNT_ADDR) */
/* Now implement the generic default functions */
#if defined(CONFIG_SYS_BOOTCOUNT_ADDR)
__weak void bootcount_store(ulong a)
{
void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR;
#if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
raw_bootcount_store(reg, (BOOTCOUNT_MAGIC & 0xffff0000) | a);
#else
raw_bootcount_store(reg, a);
raw_bootcount_store(reg + 4, BOOTCOUNT_MAGIC);
#endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD */
}
__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) */
}
#endif /* defined(CONFIG_SYS_BOOTCOUNT_ADDR) */