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linux-yocto/drivers/firmware/smccc/Kconfig
Sudeep Holla 821b67fa46 firmware: smccc: Add ARCH_SOC_ID support 
SMCCC v1.2 adds a new optional function SMCCC_ARCH_SOC_ID to obtain a
SiP defined SoC identification value. Add support for the same.

Also using the SoC bus infrastructure, let us expose the platform
specific SoC atrributes under sysfs.

There are various ways in which it can be represented in shortened form
for efficiency and ease of parsing for userspace. The chosen form is
described in the ABI document.

Link: https://lore.kernel.org/r/20200625095939.50861-1-sudeep.holla@arm.com
Cc: Etienne Carriere <etienne.carriere@st.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2020-07-06 09:48:06 +01:00

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SPDX-License-Identifier: GPL-2.0-only

config HAVE_ARM_SMCCC bool help Include support for the Secure Monitor Call (SMC) and Hypervisor Call (HVC) instructions on Armv7 and above architectures.

config HAVE_ARM_SMCCC_DISCOVERY bool depends on ARM_PSCI_FW default y help SMCCC v1.0 lacked discoverability and hence PSCI v1.0 was updated to add SMCCC discovery mechanism though the PSCI firmware implementation of PSCI_FEATURES(SMCCC_VERSION) which returns success on firmware compliant to SMCCC v1.1 and above.

config ARM_SMCCC_SOC_ID bool "SoC bus device for the ARM SMCCC SOC_ID" depends on HAVE_ARM_SMCCC_DISCOVERY default y select SOC_BUS help Include support for the SoC bus on the ARM SMCCC firmware based platforms providing some sysfs information about the SoC variant.