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cmd: Add a memory-search command

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It is useful to be able to find hex values and strings in a memory range.
Add a command to support this.

cmd: Fix 'md' and add a memory-search command
At present 'md.q' is broken. This series provides a fix for this. It also
implements a new memory-search command called 'ms'. It allows searching
memory for hex and string data.
END

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2020-06-02 19:26:49 -06:00
committed by Tom Rini
parent a33a824227
commit bdded2015c
6 changed files with 456 additions and 0 deletions
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@@ -3237,6 +3237,7 @@ md - memory display
mm - memory modify (auto-incrementing)
nm - memory modify (constant address)
mw - memory write (fill)
ms - memory search
cp - memory copy
cmp - memory compare
crc32 - checksum calculation
@@ -3482,6 +3483,15 @@ List of environment variables (most likely not complete):
CONFIG_NET_RETRY_COUNT, if defined. This value has
precedence over the valu based on CONFIG_NET_RETRY_COUNT.
memmatches - Number of matches found by the last 'ms' command, in hex
memaddr - Address of the last match found by the 'ms' command, in hex,
or 0 if none
mempos - Index position of the last match found by the 'ms' command,
in units of the size (.b, .w, .l) of the search
The following image location variables contain the location of images
used in booting. The "Image" column gives the role of the image and is
not an environment variable name. The other columns are environment