[PATCH v6 4/7] ARM: tegra: Set up L2 cache using Trusted Foundations firmware
From: Dmitry Osipenko <digetx@gmail.com>
Date: 2019-02-22 19:35:57
Also in:
linux-tegra, lkml
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
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. 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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