Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754200Ab3IOJub (ORCPT ); Sun, 15 Sep 2013 05:50:31 -0400 Received: from gnurou.org ([207.192.72.5]:40425 "EHLO mail.gnurou.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751735Ab3IOJu3 (ORCPT ); Sun, 15 Sep 2013 05:50:29 -0400 X-Greylist: delayed 537 seconds by postgrey-1.27 at vger.kernel.org; Sun, 15 Sep 2013 05:50:29 EDT From: Alexandre Courbot To: Russell King , Stephen Warren , Tomasz Figa , Dave Martin , Olof Johansson , Arnd Bergmann , Kevin Hilman , Linus Walleij Cc: gnurou@gmail.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Alexandre Courbot Subject: [PATCH v6 4/5] ARM: tegra: set CPU reset handler with firmware op Date: Sun, 15 Sep 2013 18:40:27 +0900 Message-Id: <1379238028-7960-5-git-send-email-acourbot@nvidia.com> X-Mailer: git-send-email 1.8.4 In-Reply-To: <1379238028-7960-1-git-send-email-acourbot@nvidia.com> References: <1379238028-7960-1-git-send-email-acourbot@nvidia.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1966 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 6964117..fc9cf03 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 -- 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/