Hoya architecture

The Hoya family targets Qualcomm application processors. It currently covers the kodiak and lemans chipsets.

On top of the common platform support, Hoya enables an 8-core Cortex-A (ARMv8) configuration with a GICv3 interrupt controller (CFG_ARM_GICV3).

Drivers and services

The following drivers and services are available on the Hoya architecture:

  • RAMBLUR inline memory protection (v3) (CFG_QCOM_RAMBLUR_PIMEM_V3) providing anti-rollback, integrity and confidentiality protection for secure memory windows.

  • Secure PRNG hardware random number generator (CFG_QCOM_PRNG) used as the entropy source for hw_get_random_bytes().

  • Qualcomm clock driver (CFG_DRIVERS_QCOM_CLK) built on the OP-TEE clock framework (CFG_DRIVERS_CLK).

  • Command DB (CFG_QCOM_CMD_DB), a read-only shared database used to look up RPMh resource addresses and metadata.

  • RPMh client (CFG_QCOM_RPMH_CLIENT) to vote for shared resources (clocks, regulators, etc.) through the RPMh subsystem. It depends on the Command DB driver.

  • QFPROM fuse provisioning (CFG_QCOM_QFPROM / CFG_QCOM_QFPROM_FUSEPROV) for reading and blowing one-time-programmable fuses. Fuse provisioning is enabled by default on secure builds and depends on the Command DB and RPMh client drivers.

Chipsets

Kodiak

In addition to the Hoya features above, the kodiak chipset enables the Peripheral Authentication Service (PAS) pseudo TA (CFG_QCOM_PAS_PTA). The PAS PTA authenticates and brings up remote subsystems such as the audio DSP (LPASS/QDSP6), the compute DSP (Turing) and the Wi-Fi processor subsystem (WPSS). It also applies the MX voltage-rail workaround required for QFPROM fuse blowing on this chipset (CFG_QFPROM_MX_RAIL_WA).

Lemans

The lemans chipset enables the Hoya drivers and services described above, including the Qualcomm clock driver and QFPROM fuse provisioning.