1 What: /sys/class/remoteproc/.../firm 1 What: /sys/class/remoteproc/.../firmware
2 Date: October 2016 2 Date: October 2016
3 Contact: Matt Redfearn <matt.redfearn@mi 3 Contact: Matt Redfearn <matt.redfearn@mips.com>
4 Description: Remote processor firmware 4 Description: Remote processor firmware
5 5
6 Reports the name of the firmwa 6 Reports the name of the firmware currently loaded to the
7 remote processor. 7 remote processor.
8 8
9 To change the running firmware 9 To change the running firmware, ensure the remote processor is
10 stopped (using /sys/class/remo 10 stopped (using /sys/class/remoteproc/.../state) and write a new filename.
11 11
12 What: /sys/class/remoteproc/.../stat 12 What: /sys/class/remoteproc/.../state
13 Date: October 2016 13 Date: October 2016
14 Contact: Matt Redfearn <matt.redfearn@mi 14 Contact: Matt Redfearn <matt.redfearn@mips.com>
15 Description: Remote processor state 15 Description: Remote processor state
16 16
17 Reports the state of the remot 17 Reports the state of the remote processor, which will be one of:
18 18
19 - "offline" !! 19 "offline"
20 - "suspended" !! 20 "suspended"
21 - "running" !! 21 "running"
22 - "crashed" !! 22 "crashed"
23 - "invalid" !! 23 "invalid"
24 24
25 "offline" means the remote pro 25 "offline" means the remote processor is powered off.
26 26
27 "suspended" means that the rem 27 "suspended" means that the remote processor is suspended and
28 must be woken to receive messa 28 must be woken to receive messages.
29 29
30 "running" is the normal state 30 "running" is the normal state of an available remote processor
31 31
32 "crashed" indicates that a pro 32 "crashed" indicates that a problem/crash has been detected on
33 the remote processor. 33 the remote processor.
34 34
35 "invalid" is returned if the r 35 "invalid" is returned if the remote processor is in an
36 unknown state. 36 unknown state.
37 37
38 Writing this file controls the 38 Writing this file controls the state of the remote processor.
39 The following states can be wr 39 The following states can be written:
40 40
41 - "start" !! 41 "start"
42 - "stop" !! 42 "stop"
43 43
44 Writing "start" will attempt t 44 Writing "start" will attempt to start the processor running the
45 firmware indicated by, or writ 45 firmware indicated by, or written to,
46 /sys/class/remoteproc/.../firm 46 /sys/class/remoteproc/.../firmware. The remote processor should
47 transition to "running" state. 47 transition to "running" state.
48 48
49 Writing "stop" will attempt to 49 Writing "stop" will attempt to halt the remote processor and
50 return it to the "offline" sta 50 return it to the "offline" state.
51 <<
52 What: /sys/class/remoteproc/.../name <<
53 Date: August 2019 <<
54 KernelVersion: 5.4 <<
55 Contact: Suman Anna <s-anna@ti.com> <<
56 Description: Remote processor name <<
57 <<
58 Reports the name of the remote <<
59 userspace in exactly identifyi <<
60 up the usage in modifying the <<
61 <<
62 What: /sys/class/remoteproc/.../core <<
63 Date: July 2020 <<
64 Contact: Bjorn Andersson <bjorn.andersso <<
65 Description: Remote processor coredump conf <<
66 <<
67 Reports the coredump configura <<
68 which will be one of: <<
69 <<
70 "disabled" <<
71 "enabled" <<
72 "inline" <<
73 <<
74 "disabled" means no dump will <<
75 <<
76 "enabled" means when the remot <<
77 collected it will be copied to <<
78 buffer is exposed to userspace <<
79 <<
80 "inline" means when the remote <<
81 collected userspace will direc <<
82 processor's device memory. Ext <<
83 copy the dump. Also recovery p <<
84 all data is read by userspace. <<
85 <<
86 What: /sys/class/remoteproc/.../reco <<
87 Date: July 2020 <<
88 Contact: Bjorn Andersson <bjorn.andersso <<
89 Description: Remote processor recovery mech <<
90 <<
91 Reports the recovery mechanism <<
92 which will be one of: <<
93 <<
94 "enabled" <<
95 "disabled" <<
96 <<
97 "enabled" means, the remote pr <<
98 recovered whenever it crashes. <<
99 processor crashes while recove <<
100 be automatically recovered too <<
101 <<
102 "disabled" means, a remote pro <<
103 state if it crashes. This is u <<
104 without it, debugging a crash <<
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