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| author | Peter Robinson <pbrobinson@gmail.com> | 2023-11-22 22:57:07 +0000 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2023-12-19 07:26:36 -0500 |
| commit | 38003ab25cc5a23335f55977620dc28ac7ca7657 (patch) | |
| tree | f06e2e6eac80c9311718141f103c9a1ba4aa8229 | |
| parent | 97a897444235921ce19b4f8a3b27de6f5a9ab367 (diff) | |
| download | u-boot-38003ab25cc5a23335f55977620dc28ac7ca7657.zip u-boot-38003ab25cc5a23335f55977620dc28ac7ca7657.tar.gz u-boot-38003ab25cc5a23335f55977620dc28ac7ca7657.tar.bz2 | |
doc: Remove README.sha1 file
The contents of README.sha1 only refer to process around verification
of the pcs440ep board firmware in flash. The device was removed in
commit 242836a893ae ("powerpc: ppc4xx: remove pcs440ep support") in
2015 so this readme isn't really relevant anymore so can be removed.
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | doc/README.sha1 | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/doc/README.sha1 b/doc/README.sha1 deleted file mode 100644 index f178f37..0000000 --- a/doc/README.sha1 +++ /dev/null @@ -1,58 +0,0 @@ -SHA1 usage: ------------ - -In the U-Boot Image for the pcs440ep board is a SHA1 checksum integrated. -This SHA1 sum is used, to check, if the U-Boot Image in Flash is not -corrupted. - -The following command is available: - -=> help sha1 -sha1 address len [addr] calculate the SHA1 sum [save at addr] - -p calculate the SHA1 sum from the U-Boot image in flash and print - -c check the U-Boot image in flash - -"sha1 -p" - calculates and prints the SHA1 sum, from the Image stored in Flash - -"sha1 -c" - check, if the SHA1 sum from the Image stored in Flash is correct - - -It is possible to calculate a SHA1 checksum from a memoryrange with: - -"sha1 address len" - -If you want to store a new Image in Flash for the pcs440ep board, -which has no SHA1 sum, you can do the following: - -a) cp the new Image on a position in RAM (here 0x300000) - (for this example we use the Image from Flash, stored at 0xfffa0000 and - 0x60000 Bytes long) - -"cp.b fffa0000 300000 60000" - -b) Initialize the SHA1 sum in the Image with 0x00 - The SHA1 sum is stored in Flash at: - CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN + SHA1_SUM_POS - for the pcs440ep Flash: 0xfffa0000 + 0x60000 + -0x20 - = 0xffffffe0 - for the example in RAM: 0x300000 + 0x60000 + -0x20 - = 0x35ffe0 - - note: a SHA1 checksum is 20 bytes long. - -"mw.b 35ffe0 0 14" - -c) now calculate the SHA1 sum from the memoryrange and write - the calculated checksum at the right place: - -"sha1 300000 60000 35ffe0" - -Now you have a U-Boot-Image for the pcs440ep board with the correct SHA1 sum. - -If you do a "buildman -k pcs440ep" or a "make all" to get the U-Boot image, -which will be found in ../current/ipam390/ - the correct SHA1 sum will be -automagically included in the U-Boot image. - -Heiko Schocher, 11 Jul 2007 |