2 * (C) Copyright 2010-2012
3 * Stefan Roese, DENX Software Engineering, sr@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
9 #include <linux/compiler.h>
12 * Only override CONFIG_SYS_BOOTCOUNT_ADDR if not already defined. This
13 * way, some boards can define it directly in their config header.
15 #if !defined(CONFIG_SYS_BOOTCOUNT_ADDR)
17 #if defined(CONFIG_QE)
18 #include <linux/immap_qe.h>
19 #define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_IMMR + 0x110000 + \
20 QE_MURAM_SIZE - 2 * sizeof(u32))
21 #endif /* defined(CONFIG_QE) */
23 #endif /* !defined(CONFIG_SYS_BOOTCOUNT_ADDR) */
25 /* Now implement the generic default functions */
26 #if defined(CONFIG_SYS_BOOTCOUNT_ADDR)
27 __weak
void bootcount_store(ulong a
)
29 void *reg
= (void *)CONFIG_SYS_BOOTCOUNT_ADDR
;
31 #if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
32 raw_bootcount_store(reg
, (BOOTCOUNT_MAGIC
& 0xffff0000) | a
);
34 raw_bootcount_store(reg
, a
);
35 raw_bootcount_store(reg
+ 4, BOOTCOUNT_MAGIC
);
36 #endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD */
39 __weak ulong
bootcount_load(void)
41 void *reg
= (void *)CONFIG_SYS_BOOTCOUNT_ADDR
;
43 #if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
44 u32 tmp
= raw_bootcount_load(reg
);
46 if ((tmp
& 0xffff0000) != (BOOTCOUNT_MAGIC
& 0xffff0000))
49 return (tmp
& 0x0000ffff);
51 if (raw_bootcount_load(reg
+ 4) != BOOTCOUNT_MAGIC
)
54 return raw_bootcount_load(reg
);
55 #endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD) */
57 #endif /* defined(CONFIG_SYS_BOOTCOUNT_ADDR) */