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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / f8e57c650d691e3617c49a16ec7a4dcab436100e / . / drivers / bootcount / bootcount.c
blob: d5ce450c153132c082b2aa7c991e79a1aa2c7fad [file] [log] [blame]
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]1/*
Stefan Roese0044c422012-08-16 17:55:41 +0000[diff] [blame]2 * (C) Copyright 2010-2012
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]3 * Stefan Roese, DENX Software Engineering, sr@denx.de.
4 *
Wolfgang Denk1a459662013-07-08 09:37:19 +0200[diff] [blame]5 * SPDX-License-Identifier: GPL-2.0+
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]6 */
7
Stefan Roese0044c422012-08-16 17:55:41 +0000[diff] [blame]8#include <bootcount.h>
9#include <linux/compiler.h>
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]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
Michael Weiss955ea6f2010-05-20 16:09:34 +0200[diff] [blame]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
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]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>
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]34#define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_IMMR + CPM_BOOTCOUNT_ADDR)
35#endif /* defined(CONFIG_MPC8260) */
36
Heiko Schocher62ddcf02010-02-18 08:08:25 +0100[diff] [blame]37#if defined(CONFIG_QE)
Zhao Qiang38d67a4e2014-06-03 16:27:07 +0800[diff] [blame]38#include <linux/immap_qe.h>
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]39#define CONFIG_SYS_BOOTCOUNT_ADDR (CONFIG_SYS_IMMR + 0x110000 + \
40 QE_MURAM_SIZE - 2 * sizeof(u32))
Robert P. J. Day76765372015-12-22 07:15:14 -0500[diff] [blame]41#endif /* defined(CONFIG_QE) */
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]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
Stefan Roese0044c422012-08-16 17:55:41 +0000[diff] [blame]50/* Now implement the generic default functions */
51#if defined(CONFIG_SYS_BOOTCOUNT_ADDR)
52__weak void bootcount_store(ulong a)
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]53{
54 void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR;
55
56#if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
Stefan Roese0044c422012-08-16 17:55:41 +0000[diff] [blame]57 raw_bootcount_store(reg, (BOOTCOUNT_MAGIC & 0xffff0000) | a);
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]58#else
Stefan Roese0044c422012-08-16 17:55:41 +0000[diff] [blame]59 raw_bootcount_store(reg, a);
60 raw_bootcount_store(reg + 4, BOOTCOUNT_MAGIC);
Robert P. J. Day76765372015-12-22 07:15:14 -0500[diff] [blame]61#endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD */
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]62}
63
Stefan Roese0044c422012-08-16 17:55:41 +0000[diff] [blame]64__weak ulong bootcount_load(void)
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]65{
66 void *reg = (void *)CONFIG_SYS_BOOTCOUNT_ADDR;
67
68#if defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD)
Stefan Roese0044c422012-08-16 17:55:41 +0000[diff] [blame]69 u32 tmp = raw_bootcount_load(reg);
Michael Weiss59dde442010-05-20 16:09:35 +0200[diff] [blame]70
71 if ((tmp & 0xffff0000) != (BOOTCOUNT_MAGIC & 0xffff0000))
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]72 return 0;
73 else
Michael Weiss59dde442010-05-20 16:09:35 +0200[diff] [blame]74 return (tmp & 0x0000ffff);
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]75#else
Stefan Roese0044c422012-08-16 17:55:41 +0000[diff] [blame]76 if (raw_bootcount_load(reg + 4) != BOOTCOUNT_MAGIC)
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]77 return 0;
78 else
Stefan Roese0044c422012-08-16 17:55:41 +0000[diff] [blame]79 return raw_bootcount_load(reg);
Robert P. J. Day76765372015-12-22 07:15:14 -0500[diff] [blame]80#endif /* defined(CONFIG_SYS_BOOTCOUNT_SINGLEWORD) */
Stefan Roesee4a95d12010-04-28 10:47:36 +0200[diff] [blame]81}
Robert P. J. Day76765372015-12-22 07:15:14 -0500[diff] [blame]82#endif /* defined(CONFIG_SYS_BOOTCOUNT_ADDR) */