From mboxrd@z Thu Jan 1 00:00:00 1970 From: digetx@gmail.com (Dmitry Osipenko) Date: Tue, 19 Jun 2018 14:00:25 +0300 Subject: [PATCH v2 3/5] ARM: tegra: Setup L2 cache using Trusted Foundations firmware In-Reply-To: <20180619110027.16935-1-digetx@gmail.com> References: <20180619110027.16935-1-digetx@gmail.com> Message-ID: <20180619110027.16935-4-digetx@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tegra20/30 L2 cache must be initialized using firmware call if CPU is running in insecure mode. Initialize L2 cache and setup the outer-cache callbacks in early boot using the firmware API. Signed-off-by: Dmitry Osipenko --- arch/arm/mach-tegra/tegra.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/arm/mach-tegra/tegra.c b/arch/arm/mach-tegra/tegra.c index f9587be48235..590b1cf1a8c4 100644 --- a/arch/arm/mach-tegra/tegra.c +++ b/arch/arm/mach-tegra/tegra.c @@ -38,6 +38,7 @@ #include #include +#include #include #include #include @@ -70,9 +71,23 @@ u32 tegra_uart_config[3] = { 0, }; +static void __init tegra_trusted_foundations_l2x0_cache_init(void) +{ + if (IS_ENABLED(CONFIG_CACHE_L2X0) && + IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && + of_machine_is_compatible("nvidia,tegra20")) + call_firmware_op(l2x0_init); + + if (IS_ENABLED(CONFIG_CACHE_L2X0) && + IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) && + of_machine_is_compatible("nvidia,tegra30")) + call_firmware_op(l2x0_init); +} + static void __init tegra_init_early(void) { of_register_trusted_foundations(); + tegra_trusted_foundations_l2x0_cache_init(); tegra_cpu_reset_handler_init(); } -- 2.17.1