| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20210518211922.3474368-2-john.stultz@linaro.org>
Date: Tue, 18 May 2021 21:19:22 +0000
From: John Stultz <john.stultz@...aro.org>
To: lkml <linux-kernel@...r.kernel.org>
Cc: John Stultz <john.stultz@...aro.org>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>, Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Joerg Roedel <joro@...tes.org>,
Thomas Gleixner <tglx@...utronix.de>,
Jason Cooper <jason@...edaemon.net>,
Marc Zyngier <maz@...nel.org>,
Linus Walleij <linus.walleij@...aro.org>,
Vinod Koul <vkoul@...nel.org>,
Kalle Valo <kvalo@...eaurora.org>,
Maulik Shah <mkshah@...eaurora.org>,
Lina Iyer <ilina@...eaurora.org>,
Saravana Kannan <saravanak@...gle.com>,
Todd Kjos <tkjos@...gle.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-arm-msm@...r.kernel.org, iommu@...ts.linux-foundation.org,
linux-gpio@...r.kernel.org
Subject: [PATCH 2/2] firmware: QCOM_SCM: Allow qcom_scm driver to be loadable as a permenent module
Allow the qcom_scm driver to be loadable as a permenent module.
This still uses the "depends on QCOM_SCM || !QCOM_SCM" bit to
ensure that drivers that call into the qcom_scm driver are
also built as modules. While not ideal in some cases its the
only safe way I can find to avoid build errors without having
those drivers select QCOM_SCM and have to force it on (as
QCOM_SCM=n can be valid for those drivers).
Reviving this now that Saravana's fw_devlink defaults to on,
which should avoid loading troubles seen before.
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will@...nel.org>
Cc: Andy Gross <agross@...nel.org>
Cc: Bjorn Andersson <bjorn.andersson@...aro.org>
Cc: Joerg Roedel <joro@...tes.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Jason Cooper <jason@...edaemon.net>
Cc: Marc Zyngier <maz@...nel.org>
Cc: Linus Walleij <linus.walleij@...aro.org>
Cc: Vinod Koul <vkoul@...nel.org>
Cc: Kalle Valo <kvalo@...eaurora.org>
Cc: Maulik Shah <mkshah@...eaurora.org>
Cc: Lina Iyer <ilina@...eaurora.org>
Cc: Saravana Kannan <saravanak@...gle.com>
Cc: Todd Kjos <tkjos@...gle.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-arm-msm@...r.kernel.org
Cc: iommu@...ts.linux-foundation.org
Cc: linux-gpio@...r.kernel.org
Acked-by: Kalle Valo <kvalo@...eaurora.org>
Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
v3:
* Fix __arm_smccc_smc build issue reported by
kernel test robot <lkp@...el.com>
v4:
* Add "depends on QCOM_SCM || !QCOM_SCM" bit to ath10k
config that requires it.
v5:
* Fix QCOM_QCM typo in Kconfig, it should be QCOM_SCM
---
drivers/firmware/Kconfig | 2 +-
drivers/firmware/Makefile | 3 ++-
drivers/firmware/qcom_scm.c | 4 ++++
drivers/iommu/Kconfig | 2 ++
drivers/net/wireless/ath/ath10k/Kconfig | 1 +
5 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index db0ea2d2d75a2..af53778edc7e2 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -235,7 +235,7 @@ config INTEL_STRATIX10_RSU
Say Y here if you want Intel RSU support.
config QCOM_SCM
- bool
+ tristate "Qcom SCM driver"
depends on ARM || ARM64
depends on HAVE_ARM_SMCCC
select RESET_CONTROLLER
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 5e013b6a3692e..523173cbff335 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -17,7 +17,8 @@ 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-$(CONFIG_QCOM_SCM) += qcom_scm.o qcom_scm-smc.o qcom_scm-legacy.o
+obj-$(CONFIG_QCOM_SCM) += qcom-scm.o
+qcom-scm-objs += 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
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index ee9cb545e73b9..bb9ce3f92931a 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -1296,6 +1296,7 @@ static const struct of_device_id qcom_scm_dt_match[] = {
{ .compatible = "qcom,scm" },
{}
};
+MODULE_DEVICE_TABLE(of, qcom_scm_dt_match);
static struct platform_driver qcom_scm_driver = {
.driver = {
@@ -1312,3 +1313,6 @@ static int __init qcom_scm_init(void)
return platform_driver_register(&qcom_scm_driver);
}
subsys_initcall(qcom_scm_init);
+
+MODULE_DESCRIPTION("Qualcomm Technologies, Inc. SCM driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 1f111b399bcab..38f7b7a8e2843 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -253,6 +253,7 @@ config SPAPR_TCE_IOMMU
config ARM_SMMU
tristate "ARM Ltd. System MMU (SMMU) Support"
depends on ARM64 || ARM || (COMPILE_TEST && !GENERIC_ATOMIC64)
+ depends on QCOM_SCM || !QCOM_SCM #if QCOM_SCM=m this can't be =y
select IOMMU_API
select IOMMU_IO_PGTABLE_LPAE
select ARM_DMA_USE_IOMMU if ARM
@@ -382,6 +383,7 @@ config QCOM_IOMMU
# Note: iommu drivers cannot (yet?) be built as modules
bool "Qualcomm IOMMU Support"
depends on ARCH_QCOM || (COMPILE_TEST && !GENERIC_ATOMIC64)
+ depends on QCOM_SCM=y
select IOMMU_API
select IOMMU_IO_PGTABLE_LPAE
select ARM_DMA_USE_IOMMU
diff --git a/drivers/net/wireless/ath/ath10k/Kconfig b/drivers/net/wireless/ath/ath10k/Kconfig
index 40f91bc8514d8..741289e385d59 100644
--- a/drivers/net/wireless/ath/ath10k/Kconfig
+++ b/drivers/net/wireless/ath/ath10k/Kconfig
@@ -44,6 +44,7 @@ config ATH10K_SNOC
tristate "Qualcomm ath10k SNOC support"
depends on ATH10K
depends on ARCH_QCOM || COMPILE_TEST
+ depends on QCOM_SCM || !QCOM_SCM #if QCOM_SCM=m this can't be =y
select QCOM_QMI_HELPERS
help
This module adds support for integrated WCN3990 chip connected
--
2.25.1
Powered by blists - more mailing lists