arm-trusted-firmware

levi.yun 7475815f4b feat(handoff): fix register convention r1/x1 value on transfer list 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: `5aa7aa1d3a` [3] Link: https://lists.denx.de/pipermail/u-boot/2024-July/558628.html [4] Link: https://github.com/OP-TEE/optee_os/pull/6933 [5] Signed-off-by: Levi Yun <yeoreum.yun@arm.com> Change-Id: Ie417e054a7a4c192024a2679419e99efeded1705	6 months ago
..
transfer_list.c	feat(handoff): fix register convention r1/x1 value on transfer list	4 months ago
transfer_list.mk	feat(handoff): add TL source files to BL1	6 months ago

levi.yun 7475815f4b feat(handoff): fix register convention r1/x1 value on transfer list

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: 5aa7aa1d3a [3]
Link: https://lists.denx.de/pipermail/u-boot/2024-July/558628.html [4]
Link: https://github.com/OP-TEE/optee_os/pull/6933 [5]
Signed-off-by: Levi Yun <yeoreum.yun@arm.com>
Change-Id: Ie417e054a7a4c192024a2679419e99efeded1705

6 months ago

transfer_list.c feat(handoff): fix register convention r1/x1 value on transfer list 4 months ago

transfer_list.mk feat(handoff): add TL source files to BL1 6 months ago