Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756224Ab3J1K3N (ORCPT ); Mon, 28 Oct 2013 06:29:13 -0400 Received: from hqemgate14.nvidia.com ([216.228.121.143]:7483 "EHLO hqemgate14.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756126Ab3J1K3L (ORCPT ); Mon, 28 Oct 2013 06:29:11 -0400 X-PGP-Universal: processed; by hqnvupgp08.nvidia.com on Mon, 28 Oct 2013 03:24:16 -0700 From: Alexandre Courbot To: Stephen Warren , Russell King , Tomasz Figa CC: Olof Johansson , Dave Martin , Arnd Bergmann , Kevin Hilman , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , , , , , Alexandre Courbot Subject: [PATCH v9 4/5] ARM: tegra: set CPU reset handler with firmware op Date: Mon, 28 Oct 2013 19:28:37 +0900 Message-ID: <1382956118-12495-5-git-send-email-acourbot@nvidia.com> X-Mailer: git-send-email 1.8.4.1 In-Reply-To: <1382956118-12495-1-git-send-email-acourbot@nvidia.com> References: <1382956118-12495-1-git-send-email-acourbot@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1968 Lines: 63 Use a firmware operation to set the CPU reset handler and only resort to doing it ourselves if there is none defined. This supports the booting of secondary CPUs on devices using a TrustZone secure monitor. Signed-off-by: Alexandre Courbot Reviewed-by: Tomasz Figa Reviewed-by: Stephen Warren --- arch/arm/mach-tegra/reset.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-tegra/reset.c b/arch/arm/mach-tegra/reset.c index e282395..368af0a 100644 --- a/arch/arm/mach-tegra/reset.c +++ b/arch/arm/mach-tegra/reset.c @@ -21,6 +21,7 @@ #include #include +#include #include "iomap.h" #include "irammap.h" @@ -65,6 +66,7 @@ static void __init tegra_cpu_reset_handler_enable(void) void __iomem *iram_base = IO_ADDRESS(TEGRA_IRAM_RESET_BASE); const u32 reset_address = TEGRA_IRAM_RESET_BASE + tegra_cpu_reset_handler_offset; + int err; BUG_ON(is_enabled); BUG_ON(tegra_cpu_reset_handler_size > TEGRA_IRAM_RESET_HANDLER_SIZE); @@ -72,9 +74,18 @@ static void __init tegra_cpu_reset_handler_enable(void) memcpy(iram_base, (void *)__tegra_cpu_reset_handler_start, tegra_cpu_reset_handler_size); - tegra_cpu_reset_handler_set(reset_address); - - is_enabled = true; + err = call_firmware_op(set_cpu_boot_addr, 0, reset_address); + switch (err) { + case -ENOSYS: + tegra_cpu_reset_handler_set(reset_address); + /* pass-through */ + case 0: + is_enabled = true; + break; + default: + pr_crit("Cannot set CPU reset handler: %d\n", err); + BUG(); + } } void __init tegra_cpu_reset_handler_init(void) -- 1.8.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/