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| author | Sudeep Holla <sudeep.holla@arm.com> | 2020-06-25 12:59:39 +0300 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2020-07-06 11:48:06 +0300 |
| commit | 821b67fa46390baea0ac5139a60eaa48805261b2 (patch) | |
| tree | 8dea538654ee3de9ff7256834e273c6b9fbaae6a /include/linux/arm-smccc.h | |
| parent | 475d04b48b9e227e1be2396b1499bd36274be40a (diff) | |
| download | linux-821b67fa46390baea0ac5139a60eaa48805261b2.tar.xz | |
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>
Diffstat (limited to 'include/linux/arm-smccc.h')
| -rw-r--r-- | include/linux/arm-smccc.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index 56d6a5c6e353..8254e11ea857 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -71,6 +71,11 @@ ARM_SMCCC_SMC_32, \ 0, 1) +#define ARM_SMCCC_ARCH_SOC_ID \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_32, \ + 0, 2) + #define ARM_SMCCC_ARCH_WORKAROUND_1 \ ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ ARM_SMCCC_SMC_32, \ |