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arm: imx6ul: Add Engicam GEAM6UL Starter Kit initial support
[u-boot] / drivers / bootcount / bootcount.c
1 /*
2  * (C) Copyright 2010-2012
3  * Stefan Roese, DENX Software Engineering, sr@denx.de.
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7
8 #include <bootcount.h>
9 #include <linux/compiler.h>
10
11 /*
12  * Only override CONFIG_SYS_BOOTCOUNT_ADDR if not already defined. This
13  * way, some boards can define it directly in their config header.
14  */
15 #if !defined(CONFIG_SYS_BOOTCOUNT_ADDR)
16
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) */
21
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) */
26
27 #if defined(CONFIG_8xx)
28 #define CONFIG_SYS_BOOTCOUNT_ADDR (((immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_dpmem + \
29                                 CPM_BOOTCOUNT_ADDR)
30 #endif /* defined(CONFIG_8xx) */
31
32 #if defined(CONFIG_MPC8260)
33 #include <asm/cpm_8260.h>
34 #define CONFIG_SYS_BOOTCOUNT_ADDR       (CONFIG_SYS_IMMR + CPM_BOOTCOUNT_ADDR)
35 #endif /* defined(CONFIG_MPC8260) */
36
37 #if defined(CONFIG_QE)
38 #include <linux/immap_qe.h>
39 #define CONFIG_SYS_BOOTCOUNT_ADDR       (CONFIG_SYS_IMMR + 0x110000 + \
40                                          QE_MURAM_SIZE - 2 * sizeof(u32))
41 #endif /* defined(CONFIG_QE) */
42
43 #if defined(CONFIG_4xx)
44 #define CONFIG_SYS_BOOTCOUNT_ADDR       (CONFIG_SYS_OCM_DATA_ADDR + \
45                                 CONFIG_SYS_BOOTCOUNT_ADDR)
46 #endif /* defined(CONFIG_4xx) */
47
48 #endif /* !defined(CONFIG_SYS_BOOTCOUNT_ADDR) */
49
50 /* Now implement the generic default functions */
51 #if defined(CONFIG_SYS_BOOTCOUNT_ADDR)
52 __weak void bootcount_store(ulong a)
53 {
54         void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR;
55
56 #if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
57         raw_bootcount_store(reg, (BOOTCOUNT_MAGIC & 0xffff0000) | a);
58 #else
59         raw_bootcount_store(reg, a);
60         raw_bootcount_store(reg + 4, BOOTCOUNT_MAGIC);
61 #endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD */
62 }
63
64 __weak ulong bootcount_load(void)
65 {
66         void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR;
67
68 #if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
69         u32 tmp = raw_bootcount_load(reg);
70
71         if ((tmp & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000))
72                 return 0;
73         else
74                 return (tmp & 0x0000ffff);
75 #else
76         if (raw_bootcount_load(reg + 4) != BOOTCOUNT_MAGIC)
77                 return 0;
78         else
79                 return raw_bootcount_load(reg);
80 #endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD) */
81 }
82 #endif /* defined(CONFIG_SYS_BOOTCOUNT_ADDR) */