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fel: sid: add documentation

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The new sid-dump command was missing documentation. Add it to the
internal usage() function as well as to the manpage.
Clarify on the existing sid-registers command on the way, and add
a stanza for the wdreset command.

Signed-off-by: Andre Przywara <osp@andrep.de>
This commit is contained in:
Andre Przywara 2023-02-22 21:50:59 +00:00
parent 536a1910ad
commit ed3039cdbe
2 changed files with 20 additions and 2 deletions
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3
fel.c
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@ -1273,6 +1273,9 @@ void usage(const char *cmd) {
" echo-gauge \"some text\" Update prompt/caption for gauge output\n"
" ver[sion] Show BROM version\n"
" sid Retrieve and output 128-bit SID key\n"
" sid-registers Retrieve and output 128-bit SID key,\n"
" using the MMIO register read method\n"
" sid-dump Dump the content of all the SID eFuses\n"
" clear address length Clear memory\n"
" fill address length value Fill memory\n"
, cmd);

19
sunxi-fel.1
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@ -116,6 +116,13 @@ Request a warm reset of the core, starting execution in the 64-bit AArch64
execution state, at <address>.
.RE
.PP
.B wdreset
.RS 4
Reset the device by triggering the watchdog with the shortest possible period.
This will reset the whole SoC, including all on-SoC peripherals, but might not
affect on-board devices like PMICs or PHYs.
.RE
.PP
.B memmove <dest> <source> <size>
.RS 4
Copy <size> bytes within device memory, from <source> to <dest>.
@ -203,10 +210,18 @@ number, which should be unique to each chip (although there have been reports
of same SIDs for particular batches of chips).
.RE
.PP
.B sid-register
.B sid-registers
.RS 4
As the "sid" command above, but use the alternative MMIO register access method
on the device. Some SoCs require this method for reliable results.
on the device. There are SoCs that require this method due to bugs in the SID
implementation, those known will automatically choose this workaround when using
the "sid" command. This command here is to test new SoCs for compliance.
.RE
.PP
.B sid-dump
.RS 4
Read the entire SID eFuses array and dump its content. For SoCs with a known
eFuses layout, this will annotate the known regions.
.RE
.PP
.B clear <address> <length>