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From: Dmitry Osipenko <digetx@gmail.com>
To: "Russell King" <linux@armlinux.org.uk>,
	"Thierry Reding" <thierry.reding@gmail.com>,
	"Jonathan Hunter" <jonathanh@nvidia.com>,
	"Robert Yang" <decatf@gmail.com>,
	"Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v7 4/7] ARM: tegra: Set up L2 cache using Trusted Foundations firmware
Date: Thu, 28 Feb 2019 16:17:04 +0300	[thread overview]
Message-ID: <20190228131707.2592-5-digetx@gmail.com> (raw)
In-Reply-To: <20190228131707.2592-1-digetx@gmail.com>

On Tegra30 L2 cache should be initialized using firmware call if CPU
is running in insecure mode. Set up the required outer-cache write_sec()
callback early during boot using the firmware API, it is always a NO-OP
on T114+ and is NO-OP on T20/30 if Trusted Foundations firmware node
isn't present in device-tree.

Tested-by: Robert Yang <decatf@gmail.com>
Tested-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 arch/arm/mach-tegra/tegra.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-tegra/tegra.c b/arch/arm/mach-tegra/tegra.c
index f9587be48235..1e89cfefbf68 100644
--- a/arch/arm/mach-tegra/tegra.c
+++ b/arch/arm/mach-tegra/tegra.c
@@ -38,6 +38,7 @@
 #include <soc/tegra/fuse.h>
 #include <soc/tegra/pmc.h>
 
+#include <asm/firmware.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/time.h>
@@ -74,6 +75,7 @@ static void __init tegra_init_early(void)
 {
 	of_register_trusted_foundations();
 	tegra_cpu_reset_handler_init();
+	call_firmware_op(l2x0_init);
 }
 
 static void __init tegra_dt_init_irq(void)
-- 
2.20.1

WARNING: multiple messages have this Message-ID (diff)
From: Dmitry Osipenko <digetx@gmail.com>
To: "Russell King" <linux@armlinux.org.uk>,
	"Thierry Reding" <thierry.reding@gmail.com>,
	"Jonathan Hunter" <jonathanh@nvidia.com>,
	"Robert Yang" <decatf@gmail.com>,
	"Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v7 4/7] ARM: tegra: Set up L2 cache using Trusted Foundations firmware
Date: Thu, 28 Feb 2019 16:17:04 +0300	[thread overview]
Message-ID: <20190228131707.2592-5-digetx@gmail.com> (raw)
In-Reply-To: <20190228131707.2592-1-digetx@gmail.com>

On Tegra30 L2 cache should be initialized using firmware call if CPU
is running in insecure mode. Set up the required outer-cache write_sec()
callback early during boot using the firmware API, it is always a NO-OP
on T114+ and is NO-OP on T20/30 if Trusted Foundations firmware node
isn't present in device-tree.

Tested-by: Robert Yang <decatf@gmail.com>
Tested-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 arch/arm/mach-tegra/tegra.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-tegra/tegra.c b/arch/arm/mach-tegra/tegra.c
index f9587be48235..1e89cfefbf68 100644
--- a/arch/arm/mach-tegra/tegra.c
+++ b/arch/arm/mach-tegra/tegra.c
@@ -38,6 +38,7 @@
 #include <soc/tegra/fuse.h>
 #include <soc/tegra/pmc.h>
 
+#include <asm/firmware.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/time.h>
@@ -74,6 +75,7 @@ static void __init tegra_init_early(void)
 {
 	of_register_trusted_foundations();
 	tegra_cpu_reset_handler_init();
+	call_firmware_op(l2x0_init);
 }
 
 static void __init tegra_dt_init_irq(void)
-- 
2.20.1


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  parent reply	other threads:[~2019-02-28 13:17 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-28 13:17 [PATCH v7 0/7] Support Trusted Foundations firmware on Tegra30 Dmitry Osipenko
2019-02-28 13:17 ` Dmitry Osipenko
2019-02-28 13:17 ` [PATCH v7 1/7] ARM: trusted_foundations: Support L2 cache maintenance Dmitry Osipenko
2019-02-28 13:17   ` Dmitry Osipenko
2019-02-28 13:27   ` Russell King - ARM Linux admin
2019-02-28 13:27     ` Russell King - ARM Linux admin
2019-02-28 13:27     ` Russell King - ARM Linux admin
2019-02-28 13:36     ` Dmitry Osipenko
2019-02-28 13:36       ` Dmitry Osipenko
2019-02-28 13:17 ` [PATCH v7 2/7] ARM: trusted_foundations: Make prepare_idle call to take mode argument Dmitry Osipenko
2019-02-28 13:17   ` Dmitry Osipenko
2019-02-28 13:17 ` [PATCH v7 3/7] ARM: trusted_foundations: Provide information about whether firmware is registered Dmitry Osipenko
2019-02-28 13:17   ` Dmitry Osipenko
2019-02-28 13:17 ` Dmitry Osipenko [this message]
2019-02-28 13:17   ` [PATCH v7 4/7] ARM: tegra: Set up L2 cache using Trusted Foundations firmware Dmitry Osipenko
2019-02-28 13:17 ` [PATCH v7 5/7] ARM: tegra: Don't apply CPU erratas in insecure mode Dmitry Osipenko
2019-02-28 13:17   ` Dmitry Osipenko
2019-02-28 13:17 ` [PATCH v7 6/7] ARM: tegra: Always boot CPU in ARM-mode Dmitry Osipenko
2019-02-28 13:17   ` Dmitry Osipenko
2019-02-28 13:17 ` [PATCH v7 7/7] ARM: tegra: Add firmware calls required for suspend-resume on Tegra30 Dmitry Osipenko
2019-02-28 13:17   ` Dmitry Osipenko

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