From: Dmitry Osipenko <digetx@gmail.com>
Date: Sun, 17 Mar 2019 22:52:07 +0000 (+0300)
Subject: ARM: tegra: Set up L2 cache using Trusted Foundations firmware
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6ad27b8350401a3c79899b431097afc361b46374;p=linux.git

ARM: tegra: Set up L2 cache using Trusted Foundations firmware

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>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---

diff --git a/arch/arm/mach-tegra/tegra.c b/arch/arm/mach-tegra/tegra.c
index f9587be482351..1e89cfefbf68f 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)