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7475815f4b
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]).
Therefore, it requires to separate mask and shift value for register
convention version field when sets each r1/x1.
This patch fix two 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 change is breaking change. It requires some patch for other
softwares (u-boot[4], optee[5]).
Link: https://github.com/FirmwareHandoff/firmware_handoff [1]
Link: https://github.com/FirmwareHandoff/firmware_handoff/issues/32 [2]
Link:
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|---|---|---|
| .. | ||
| aarch32 | ||
| aarch64 | ||
| bl_aux_params | ||
| compiler-rt | ||
| coreboot | ||
| cpus | ||
| debugfs | ||
| el3_runtime | ||
| extensions | ||
| fconf | ||
| gpt_rme | ||
| libc | ||
| libfdt | ||
| locks | ||
| mpmm | ||
| optee | ||
| pmf | ||
| psa | ||
| psci | ||
| romlib | ||
| semihosting | ||
| stack_protector | ||
| transfer_list | ||
| utils | ||
| xlat_mpu | ||
| xlat_tables | ||
| xlat_tables_v2 | ||
| zlib | ||