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authorLevi Yun <yeoreum.yun@arm.com>2024-07-10 14:53:20 +0100
committerTom Rini <trini@konsulko.com>2024-07-18 07:40:30 -0600
commit84ab75fb56337a7c186044850d3f6555bc644df1 (patch)
tree66bad5f6339ae45f9dc65ea3388f766ebc0bc789 /doc/conf.py
parent2f1821feb65939e308d4ab4bd42b97cf097d4cdf (diff)
bloblist: fix bloblist convention check.
According to recently firmware handsoff spec [1]'s "Register usage at handoff boundary", Transfer List's signature value was changed from 0x40_b10b (3 bytes) to 4a0f_b10b (4 bytes). As updating of TL's signature, register value of x1/r1 should be: In aarch32's r1 value should be R1[23:0]: set to the TL signature (4a0f_b10b -> masked range value: 0f_b10b) R1[31:24]: version of the register convention == 1 and In aarch64's x1 value should be X1[31:0]: set to the TL signature (4a0f_b10b) X1[39:32]: version of the register convention == 1 X1[63:40]: MBZ (See the [2] and [3]). This patch fix problems: 1. breaking X1 value with updated specification in aarch64 - change of length of signature field. 2. previous error value set in R1 in arm32. - length of signature should be 24, but it uses 32bit signature. This patch is a breaking change. It works only TF-A is updated. Link: https://github.com/FirmwareHandoff/firmware_handoff [1] Link: https://github.com/FirmwareHandoff/firmware_handoff/issues/32 [2] Link: https://github.com/FirmwareHandoff/firmware_handoff/commit/5aa7aa1d3a1db75213e458d392b751f0707de027 [3] Signed-off-by: Levi Yun <yeoreum.yun@arm.com> Reviewed-by: Raymond Mao <raymond.mao@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
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