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 #if defined(CONFIG_4xx)
24 #define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_OCM_DATA_ADDR + \
25 CONFIG_SYS_BOOTCOUNT_ADDR)
26 #endif /* defined(CONFIG_4xx) */
28 #endif /* !defined(CONFIG_SYS_BOOTCOUNT_ADDR) */
30 /* Now implement the generic default functions */
31 #if defined(CONFIG_SYS_BOOTCOUNT_ADDR)
32 __weak
void bootcount_store(ulong a
)
34 void *reg
= (void *)CONFIG_SYS_BOOTCOUNT_ADDR
;
36 #if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
37 raw_bootcount_store(reg
, (BOOTCOUNT_MAGIC
& 0xffff0000) | a
);
39 raw_bootcount_store(reg
, a
);
40 raw_bootcount_store(reg
+ 4, BOOTCOUNT_MAGIC
);
41 #endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD */
44 __weak ulong
bootcount_load(void)
46 void *reg
= (void *)CONFIG_SYS_BOOTCOUNT_ADDR
;
48 #if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
49 u32 tmp
= raw_bootcount_load(reg
);
51 if ((tmp
& 0xffff0000) != (BOOTCOUNT_MAGIC
& 0xffff0000))
54 return (tmp
& 0x0000ffff);
56 if (raw_bootcount_load(reg
+ 4) != BOOTCOUNT_MAGIC
)
59 return raw_bootcount_load(reg
);
60 #endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD) */
62 #endif /* defined(CONFIG_SYS_BOOTCOUNT_ADDR) */