xref: /openbmc/u-boot/drivers/bootcount/Kconfig (revision 413888a5)
1#
2# Boot count configuration
3#
4
5menuconfig BOOTCOUNT_LIMIT
6	bool "Enable support for checking boot count limit"
7	help
8	  Enable checking for exceeding the boot count limit.
9	  More information: http://www.denx.de/wiki/DULG/UBootBootCountLimit
10
11if BOOTCOUNT_LIMIT
12
13choice
14	prompt "Boot count device"
15	default BOOTCOUNT_AM33XX if AM33XX || SOC_DA8XX
16	default BOOTCOUNT_AT91 if AT91SAM9XE
17	default BOOTCOUNT_GENERIC
18
19config BOOTCOUNT_GENERIC
20	bool "Generic default boot counter"
21	help
22	  Generic bootcount stored at SYS_BOOTCOUNT_ADDR.
23
24	  SYS_BOOTCOUNT_ADDR:
25	    Set to the address where the bootcount and bootcount magic
26	    will be stored.
27
28config BOOTCOUNT_EXT
29	bool "Boot counter on EXT filesystem"
30	help
31	  Add support for maintaining boot count in a file on an EXT
32	  filesystem.
33
34config BOOTCOUNT_AM33XX
35	bool "Boot counter in AM33XX RTC IP block"
36	depends on AM33XX || SOC_DA8XX
37	select SPL_AM33XX_ENABLE_RTC32K_OSC if AM33XX
38	help
39	  A bootcount driver for the RTC IP block found on many TI platforms.
40	  This requires the RTC clocks, etc, to be enabled prior to use and
41	  not all boards with this IP block on it will have the RTC in use.
42
43config BOOTCOUNT_ENV
44	bool "Boot counter in environment"
45	help
46	  If no softreset save registers are found on the hardware
47	  "bootcount" is stored in the environment. To prevent a
48	  saveenv on all reboots, the environment variable
49	  "upgrade_available" is used. If "upgrade_available" is
50	  0, "bootcount" is always 0, if "upgrade_available" is
51	  1 "bootcount" is incremented in the environment.
52	  So the Userspace Application must set the "upgrade_available"
53	  and "bootcount" variable to 0, if a boot was successfully.
54
55config BOOTCOUNT_RAM
56	bool "Boot counter in RAM"
57	help
58	  Store the bootcount in DRAM protected against against bit errors
59	  due to short power loss or holding a system in RESET.
60
61config BOOTCOUNT_I2C
62	bool "Boot counter on I2C device"
63	help
64	  Enable support for the bootcounter on an i2c (like RTC) device.
65	  CONFIG_SYS_I2C_RTC_ADDR = i2c chip address
66	  CONFIG_SYS_BOOTCOUNT_ADDR = i2c addr which is used for
67	                              the bootcounter.
68
69config BOOTCOUNT_AT91
70	bool "Boot counter for Atmel AT91SAM9XE"
71	depends on AT91SAM9XE
72
73config DM_BOOTCOUNT
74        bool "Boot counter in a device-model device"
75	help
76	  Enables reading/writing the bootcount in a device-model based
77	  backing store.  If an entry in /chosen/u-boot,bootcount-device
78	  exists, this will be the preferred bootcount device; otherwise
79	  the first available bootcount device will be used.
80
81endchoice
82
83if DM_BOOTCOUNT
84
85menu "Backing stores for device-model backed bootcount"
86config DM_BOOTCOUNT_RTC
87	bool "Support RTC devices as a backing store for bootcount"
88	depends on DM_RTC
89	help
90	  Enabled reading/writing the bootcount in a DM RTC device.
91	  The wrapper device is to be specified with the compatible string
92	  'u-boot,bootcount-rtc' and the 'rtc'-property (a phandle pointing
93	  to the underlying RTC device) and an optional 'offset' property
94	  are supported.
95
96	  Accesses to the backing store are performed using the write16
97	  and read16 ops of DM RTC devices.
98
99endmenu
100
101endif
102
103config BOOTCOUNT_BOOTLIMIT
104	int "Maximum number of reboot cycles allowed"
105	default 0
106	help
107	  Set the Maximum number of reboot cycles allowed without the boot
108	  counter being cleared.
109	  If set to 0 do not set a boot limit in the environment.
110
111config BOOTCOUNT_ALEN
112	int "I2C address length"
113	default 1
114	depends on BOOTCOUNT_I2C
115	help
116	  Length of the the I2C address at SYS_BOOTCOUNT_ADDR for storing
117	  the boot counter.
118
119config SYS_BOOTCOUNT_SINGLEWORD
120	bool "Use single word to pack boot count and magic value"
121	depends on BOOTCOUNT_GENERIC
122	help
123	  This option enables packing boot count magic value and boot count
124	  into single word (32 bits).
125
126config SYS_BOOTCOUNT_EXT_INTERFACE
127	string "Interface on which to find boot counter EXT filesystem"
128	default "mmc"
129	depends on BOOTCOUNT_EXT
130	help
131	  Set the interface to use when locating the filesystem to use for the
132	  boot counter.
133
134config SYS_BOOTCOUNT_EXT_DEVPART
135	string "Partition of the boot counter EXT filesystem"
136	default "0:1"
137	depends on BOOTCOUNT_EXT
138	help
139	  Set the partition to use when locating the filesystem to use for the
140	  boot counter.
141
142config SYS_BOOTCOUNT_EXT_NAME
143	string "Path and filename of the EXT filesystem based boot counter"
144	default "/boot/failures"
145	depends on BOOTCOUNT_EXT
146	help
147	  Set the filename and path of the file used to store the boot counter.
148
149config SYS_BOOTCOUNT_ADDR
150	hex "RAM address used for reading and writing the boot counter"
151	default 0x44E3E000 if BOOTCOUNT_AM33XX
152	default 0xE0115FF8 if ARCH_LS1043A || ARCH_LS1021A
153	depends on BOOTCOUNT_AM33XX || BOOTCOUNT_GENERIC || BOOTCOUNT_EXT || \
154		   BOOTCOUNT_I2C
155	help
156	  Set the address used for reading and writing the boot counter.
157
158config SYS_BOOTCOUNT_MAGIC
159	hex "Magic value for the boot counter"
160	default 0xB001C041
161	help
162	  Set the magic value used for the boot counter.
163
164endif
165