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| author | Elliot Berman <eberman@codeaurora.org> | 2020-01-07 13:04:26 -0800 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2020-01-07 22:14:43 -0800 |
| commit | 9a434cee773ae15309ac225f27551b5492618e4a (patch) | |
| tree | 26d7deff138efa039629a0611ada779626d552e5 /drivers/firmware/Makefile | |
| parent | 57d3b816718c1cf832e2929a754da3564c6127cc (diff) | |
| download | linux-stable-9a434cee773ae15309ac225f27551b5492618e4a.tar.gz linux-stable-9a434cee773ae15309ac225f27551b5492618e4a.tar.bz2 linux-stable-9a434cee773ae15309ac225f27551b5492618e4a.zip | |
firmware: qcom_scm: Dynamically support SMCCC and legacy conventions
Dynamically support SMCCCC and legacy conventions by detecting which
convention to use at runtime. qcom_scm_call_atomic and qcom_scm_call can
then be moved in qcom_scm.c and use underlying convention backend as
appropriate. Thus, rename qcom_scm-64,-32 to reflect that they are
backends for -smc and -legacy, respectively.
Also add support for making SCM calls earlier than when SCM driver
probes to support use cases such as qcom_scm_set_cold_boot_addr. Support
is added by lazily initializing the convention and guarding the query
with a spin lock. The limitation of these early SCM calls is that they
cannot use DMA, as in the case of >4 arguments for SMC convention and
any non-atomic call for legacy convention.
Tested-by: Brian Masney <masneyb@onstation.org> # arm32
Tested-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Elliot Berman <eberman@codeaurora.org>
Link: https://lore.kernel.org/r/1578431066-19600-18-git-send-email-eberman@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/firmware/Makefile')
| -rw-r--r-- | drivers/firmware/Makefile | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile index 747fb73b264c..e9fb838af4df 100644 --- a/drivers/firmware/Makefile +++ b/drivers/firmware/Makefile @@ -17,9 +17,7 @@ obj-$(CONFIG_ISCSI_IBFT) += iscsi_ibft.o obj-$(CONFIG_FIRMWARE_MEMMAP) += memmap.o obj-$(CONFIG_RASPBERRYPI_FIRMWARE) += raspberrypi.o obj-$(CONFIG_FW_CFG_SYSFS) += qemu_fw_cfg.o -obj-$(CONFIG_QCOM_SCM) += qcom_scm.o -obj-$(CONFIG_QCOM_SCM_64) += qcom_scm-64.o -obj-$(CONFIG_QCOM_SCM_32) += qcom_scm-32.o +obj-$(CONFIG_QCOM_SCM) += qcom_scm.o qcom_scm-smc.o qcom_scm-legacy.o obj-$(CONFIG_TI_SCI_PROTOCOL) += ti_sci.o obj-$(CONFIG_TRUSTED_FOUNDATIONS) += trusted_foundations.o obj-$(CONFIG_TURRIS_MOX_RWTM) += turris-mox-rwtm.o |