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Message-ID: <e30498f0-4876-4d47-ad41-d140c2a7639a@quicinc.com>
Date: Thu, 28 Sep 2023 10:08:38 -0700
From: Elliot Berman <quic_eberman@...cinc.com>
To: Bartosz Golaszewski <brgl@...ev.pl>,
Andy Gross <agross@...nel.org>,
"Bjorn Andersson" <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Maximilian Luz <luzmaximilian@...il.com>,
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
CC: <linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
<kernel@...cinc.com>,
Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v2 01/11] firmware: qcom: move Qualcomm code into its own
directory
On 9/28/2023 2:20 AM, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
>
> We're getting more and more qcom specific .c files in drivers/firmware/
> and about to get even more. Create a separate directory for Qualcomm
> firmware drivers and move existing sources in there.
>
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Acked-by: Elliot Berman <quic_eberman@...cinc.com>
> ---
> MAINTAINERS | 4 +-
> drivers/firmware/Kconfig | 48 +---------------
> drivers/firmware/Makefile | 5 +-
> drivers/firmware/qcom/Kconfig | 56 +++++++++++++++++++
> drivers/firmware/qcom/Makefile | 9 +++
> drivers/firmware/{ => qcom}/qcom_qseecom.c | 0
> .../{ => qcom}/qcom_qseecom_uefisecapp.c | 0
> drivers/firmware/{ => qcom}/qcom_scm-legacy.c | 0
> drivers/firmware/{ => qcom}/qcom_scm-smc.c | 0
> drivers/firmware/{ => qcom}/qcom_scm.c | 0
> drivers/firmware/{ => qcom}/qcom_scm.h | 0
> 11 files changed, 69 insertions(+), 53 deletions(-)
> create mode 100644 drivers/firmware/qcom/Kconfig
> create mode 100644 drivers/firmware/qcom/Makefile
> rename drivers/firmware/{ => qcom}/qcom_qseecom.c (100%)
> rename drivers/firmware/{ => qcom}/qcom_qseecom_uefisecapp.c (100%)
> rename drivers/firmware/{ => qcom}/qcom_scm-legacy.c (100%)
> rename drivers/firmware/{ => qcom}/qcom_scm-smc.c (100%)
> rename drivers/firmware/{ => qcom}/qcom_scm.c (100%)
> rename drivers/firmware/{ => qcom}/qcom_scm.h (100%)
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 861a16b4586c..88c2186b4975 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -17887,13 +17887,13 @@ QUALCOMM QSEECOM DRIVER
> M: Maximilian Luz <luzmaximilian@...il.com>
> L: linux-arm-msm@...r.kernel.org
> S: Maintained
> -F: drivers/firmware/qcom_qseecom.c
> +F: drivers/firmware/qcom/qcom_qseecom.c
>
> QUALCOMM QSEECOM UEFISECAPP DRIVER
> M: Maximilian Luz <luzmaximilian@...il.com>
> L: linux-arm-msm@...r.kernel.org
> S: Maintained
> -F: drivers/firmware/qcom_qseecom_uefisecapp.c
> +F: drivers/firmware/qcom/qcom_qseecom_uefisecapp.c
>
> QUALCOMM RMNET DRIVER
> M: Subash Abhinov Kasiviswanathan <quic_subashab@...cinc.com>
> diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
> index 817e011a8945..74d00b0c83fe 100644
> --- a/drivers/firmware/Kconfig
> +++ b/drivers/firmware/Kconfig
> @@ -188,53 +188,6 @@ config MTK_ADSP_IPC
> ADSP exists on some mtk processors.
> Client might use shared memory to exchange information with ADSP.
>
> -config QCOM_SCM
> - tristate
> -
> -config QCOM_SCM_DOWNLOAD_MODE_DEFAULT
> - bool "Qualcomm download mode enabled by default"
> - depends on QCOM_SCM
> - help
> - A device with "download mode" enabled will upon an unexpected
> - warm-restart enter a special debug mode that allows the user to
> - "download" memory content over USB for offline postmortem analysis.
> - The feature can be enabled/disabled on the kernel command line.
> -
> - Say Y here to enable "download mode" by default.
> -
> -config QCOM_QSEECOM
> - bool "Qualcomm QSEECOM interface driver"
> - depends on QCOM_SCM=y
> - select AUXILIARY_BUS
> - help
> - Various Qualcomm SoCs have a Secure Execution Environment (SEE) running
> - in the Trust Zone. This module provides an interface to that via the
> - QSEECOM mechanism, using SCM calls.
> -
> - The QSEECOM interface allows, among other things, access to applications
> - running in the SEE. An example of such an application is 'uefisecapp',
> - which is required to access UEFI variables on certain systems. If
> - selected, the interface will also attempt to detect and register client
> - devices for supported applications.
> -
> - Select Y here to enable the QSEECOM interface driver.
> -
> -config QCOM_QSEECOM_UEFISECAPP
> - bool "Qualcomm SEE UEFI Secure App client driver"
> - depends on QCOM_QSEECOM
> - depends on EFI
> - help
> - Various Qualcomm SoCs do not allow direct access to EFI variables.
> - Instead, these need to be accessed via the UEFI Secure Application
> - (uefisecapp), residing in the Secure Execution Environment (SEE).
> -
> - This module provides a client driver for uefisecapp, installing efivar
> - operations to allow the kernel accessing EFI variables, and via that also
> - provide user-space with access to EFI variables via efivarfs.
> -
> - Select Y here to provide access to EFI variables on the aforementioned
> - platforms.
> -
> config SYSFB
> bool
> select BOOT_VESA_SUPPORT
> @@ -320,6 +273,7 @@ source "drivers/firmware/efi/Kconfig"
> source "drivers/firmware/imx/Kconfig"
> source "drivers/firmware/meson/Kconfig"
> source "drivers/firmware/psci/Kconfig"
> +source "drivers/firmware/qcom/Kconfig"
> source "drivers/firmware/smccc/Kconfig"
> source "drivers/firmware/tegra/Kconfig"
> source "drivers/firmware/xilinx/Kconfig"
> diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
> index cb18fd8882dc..5f9dab82e1a0 100644
> --- a/drivers/firmware/Makefile
> +++ b/drivers/firmware/Makefile
> @@ -17,10 +17,6 @@ obj-$(CONFIG_FIRMWARE_MEMMAP) += memmap.o
> obj-$(CONFIG_MTK_ADSP_IPC) += mtk-adsp-ipc.o
> obj-$(CONFIG_RASPBERRYPI_FIRMWARE) += raspberrypi.o
> obj-$(CONFIG_FW_CFG_SYSFS) += qemu_fw_cfg.o
> -obj-$(CONFIG_QCOM_SCM) += qcom-scm.o
> -qcom-scm-objs += qcom_scm.o qcom_scm-smc.o qcom_scm-legacy.o
> -obj-$(CONFIG_QCOM_QSEECOM) += qcom_qseecom.o
> -obj-$(CONFIG_QCOM_QSEECOM_UEFISECAPP) += qcom_qseecom_uefisecapp.o
> obj-$(CONFIG_SYSFB) += sysfb.o
> obj-$(CONFIG_SYSFB_SIMPLEFB) += sysfb_simplefb.o
> obj-$(CONFIG_TI_SCI_PROTOCOL) += ti_sci.o
> @@ -36,6 +32,7 @@ obj-$(CONFIG_GOOGLE_FIRMWARE) += google/
> obj-y += efi/
> obj-y += imx/
> obj-y += psci/
> +obj-y += qcom/
> obj-y += smccc/
> obj-y += tegra/
> obj-y += xilinx/
> diff --git a/drivers/firmware/qcom/Kconfig b/drivers/firmware/qcom/Kconfig
> new file mode 100644
> index 000000000000..3f05d9854ddf
> --- /dev/null
> +++ b/drivers/firmware/qcom/Kconfig
> @@ -0,0 +1,56 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +#
> +# For a description of the syntax of this configuration file,
> +# see Documentation/kbuild/kconfig-language.rst.
> +#
> +
> +menu "Qualcomm firmware drivers"
> +
> +config QCOM_SCM
> + tristate
> +
> +config QCOM_SCM_DOWNLOAD_MODE_DEFAULT
> + bool "Qualcomm download mode enabled by default"
> + depends on QCOM_SCM
> + help
> + A device with "download mode" enabled will upon an unexpected
> + warm-restart enter a special debug mode that allows the user to
> + "download" memory content over USB for offline postmortem analysis.
> + The feature can be enabled/disabled on the kernel command line.
> +
> + Say Y here to enable "download mode" by default.
> +
> +config QCOM_QSEECOM
> + bool "Qualcomm QSEECOM interface driver"
> + depends on QCOM_SCM=y
> + select AUXILIARY_BUS
> + help
> + Various Qualcomm SoCs have a Secure Execution Environment (SEE) running
> + in the Trust Zone. This module provides an interface to that via the
> + QSEECOM mechanism, using SCM calls.
> +
> + The QSEECOM interface allows, among other things, access to applications
> + running in the SEE. An example of such an application is 'uefisecapp',
> + which is required to access UEFI variables on certain systems. If
> + selected, the interface will also attempt to detect and register client
> + devices for supported applications.
> +
> + Select Y here to enable the QSEECOM interface driver.
> +
> +config QCOM_QSEECOM_UEFISECAPP
> + bool "Qualcomm SEE UEFI Secure App client driver"
> + depends on QCOM_QSEECOM
> + depends on EFI
> + help
> + Various Qualcomm SoCs do not allow direct access to EFI variables.
> + Instead, these need to be accessed via the UEFI Secure Application
> + (uefisecapp), residing in the Secure Execution Environment (SEE).
> +
> + This module provides a client driver for uefisecapp, installing efivar
> + operations to allow the kernel accessing EFI variables, and via that also
> + provide user-space with access to EFI variables via efivarfs.
> +
> + Select Y here to provide access to EFI variables on the aforementioned
> + platforms.
> +
> +endmenu
> diff --git a/drivers/firmware/qcom/Makefile b/drivers/firmware/qcom/Makefile
> new file mode 100644
> index 000000000000..c9f12ee8224a
> --- /dev/null
> +++ b/drivers/firmware/qcom/Makefile
> @@ -0,0 +1,9 @@
> +# SPDX-License-Identifier: GPL-2.0
> +#
> +# Makefile for the linux kernel.
> +#
> +
> +obj-$(CONFIG_QCOM_SCM) += qcom-scm.o
> +qcom-scm-objs += qcom_scm.o qcom_scm-smc.o qcom_scm-legacy.o
> +obj-$(CONFIG_QCOM_QSEECOM) += qcom_qseecom.o
> +obj-$(CONFIG_QCOM_QSEECOM_UEFISECAPP) += qcom_qseecom_uefisecapp.o
> diff --git a/drivers/firmware/qcom_qseecom.c b/drivers/firmware/qcom/qcom_qseecom.c
> similarity index 100%
> rename from drivers/firmware/qcom_qseecom.c
> rename to drivers/firmware/qcom/qcom_qseecom.c
> diff --git a/drivers/firmware/qcom_qseecom_uefisecapp.c b/drivers/firmware/qcom/qcom_qseecom_uefisecapp.c
> similarity index 100%
> rename from drivers/firmware/qcom_qseecom_uefisecapp.c
> rename to drivers/firmware/qcom/qcom_qseecom_uefisecapp.c
> diff --git a/drivers/firmware/qcom_scm-legacy.c b/drivers/firmware/qcom/qcom_scm-legacy.c
> similarity index 100%
> rename from drivers/firmware/qcom_scm-legacy.c
> rename to drivers/firmware/qcom/qcom_scm-legacy.c
> diff --git a/drivers/firmware/qcom_scm-smc.c b/drivers/firmware/qcom/qcom_scm-smc.c
> similarity index 100%
> rename from drivers/firmware/qcom_scm-smc.c
> rename to drivers/firmware/qcom/qcom_scm-smc.c
> diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c
> similarity index 100%
> rename from drivers/firmware/qcom_scm.c
> rename to drivers/firmware/qcom/qcom_scm.c
> diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom/qcom_scm.h
> similarity index 100%
> rename from drivers/firmware/qcom_scm.h
> rename to drivers/firmware/qcom/qcom_scm.h
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