diff options
| author | Elliot Berman <eberman@codeaurora.org> | 2020-01-08 00:04:26 +0300 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2020-01-08 09:14:43 +0300 |
| commit | 9a434cee773ae15309ac225f27551b5492618e4a (patch) | |
| tree | 26d7deff138efa039629a0611ada779626d552e5 /drivers/firmware/Kconfig | |
| parent | 57d3b816718c1cf832e2929a754da3564c6127cc (diff) | |
| download | linux-9a434cee773ae15309ac225f27551b5492618e4a.tar.xz | |
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/Kconfig')
| -rw-r--r-- | drivers/firmware/Kconfig | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index e40a77bfe821..ea869addc89b 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -239,14 +239,6 @@ config QCOM_SCM depends on ARM || ARM64 select RESET_CONTROLLER -config QCOM_SCM_32 - def_bool y - depends on QCOM_SCM && ARM - -config QCOM_SCM_64 - def_bool y - depends on QCOM_SCM && ARM64 - config QCOM_SCM_DOWNLOAD_MODE_DEFAULT bool "Qualcomm download mode enabled by default" depends on QCOM_SCM |