Add Sunxi SID read support - #1
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@ssekar15 @parthitce Request for review. |
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Should be fine to submit upstream
| int tee_otp_get_die_id(uint8_t *buffer, size_t len) | ||
| { | ||
| if (!buffer || len != SUNXI_SID_CHIPID_LEN) | ||
| return -1; |
| return -1; | ||
|
|
||
| if (sunxi_sid_read_otp(buffer, len, SUNXI_SID_CHIP_ID_REG)) | ||
| return -1; |
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Add a driver for the Allwinner Security ID (SID) efuse block, based on the register layout described in [1] and tested on the A133 SoC. A133 uses same SID layout as the H6 generation described there. Currently the driver only implements reading and is used for the chip ID and the HUK from efuse register. Note that the SID, including the HUK area, is readable from the normal world unless the secure boot fuse is burnt. The HUK is therefore only secret on devices with secure boot enabled. [1]: https://linux-sunxi.org/SID_Register_Guide Signed-off-by: Karthikeyan Kalamani <karthikeyan@linumiz.com> Reviewed-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org> Acked-by: Jens Wiklander <jens.wiklander@oss.qualcomm.com>
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Add supprt for allwinner sunxi sid registers read. Driver is tested on the A133 platform. For more information about the sunxi SID regiters see https://linux-sunxi.org/SID_Register_Guide