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_MPC5xxx)
18 #define CONFIG_SYS_BOOTCOUNT_ADDR (MPC5XXX_CDM_BRDCRMB)
19 #define CONFIG_SYS_BOOTCOUNT_SINGLEWORD
20 #endif /* defined(CONFIG_MPC5xxx) */
22 #if defined(CONFIG_MPC512X)
23 #define CONFIG_SYS_BOOTCOUNT_ADDR (&((immap_t *)CONFIG_SYS_IMMR)->clk.bcr)
24 #define CONFIG_SYS_BOOTCOUNT_SINGLEWORD
25 #endif /* defined(CONFIG_MPC512X) */
27 #if defined(CONFIG_QE)
28 #include <linux/immap_qe.h>
29 #define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_IMMR + 0x110000 + \
30 QE_MURAM_SIZE - 2 * sizeof(u32))
31 #endif /* defined(CONFIG_QE) */
33 #if defined(CONFIG_4xx)
34 #define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_OCM_DATA_ADDR + \
35 CONFIG_SYS_BOOTCOUNT_ADDR)
36 #endif /* defined(CONFIG_4xx) */
38 #endif /* !defined(CONFIG_SYS_BOOTCOUNT_ADDR) */
40 /* Now implement the generic default functions */
41 #if defined(CONFIG_SYS_BOOTCOUNT_ADDR)
42 __weak void bootcount_store(ulong a)
44 void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR;
46 #if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
47 raw_bootcount_store(reg, (BOOTCOUNT_MAGIC & 0xffff0000) | a);
49 raw_bootcount_store(reg, a);
50 raw_bootcount_store(reg + 4, BOOTCOUNT_MAGIC);
51 #endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD */
54 __weak ulong bootcount_load(void)
56 void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR;
58 #if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
59 u32 tmp = raw_bootcount_load(reg);
61 if ((tmp & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000))
64 return (tmp & 0x0000ffff);
66 if (raw_bootcount_load(reg + 4) != BOOTCOUNT_MAGIC)
69 return raw_bootcount_load(reg);
70 #endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD) */
72 #endif /* defined(CONFIG_SYS_BOOTCOUNT_ADDR) */