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Fri, 01 Nov 2019 01:55:37 -0700 (PDT) Received: from wafer.ozlabs.ibm.com ([122.99.82.10]) by smtp.gmail.com with ESMTPSA id q15sm5596078pff.155.2019.11.01.01.55.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Nov 2019 01:55:36 -0700 (PDT) From: Oliver O'Halloran To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH 2/2] powerpc/powernv: Allow manually invoking special reboots Date: Fri, 1 Nov 2019 19:55:22 +1100 Message-Id: <20191101085522.3055-2-oohall@gmail.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191101085522.3055-1-oohall@gmail.com> References: <20191101085522.3055-1-oohall@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Oliver O'Halloran Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" OPAL provides several different kinds of reboot for the kernel to use, namely forcing a full reboot, platform error reboot and MPIPL. Right now triggering the alternative resets requires some ad-hoc method such as triggering a kernel crash and hoping the stars align. It's sometimes handy to be able to trigger one of these resets directly, so add a way to do that. Signed-off-by: Oliver O'Halloran --- arch/powerpc/platforms/powernv/setup.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c index 8349860..11fdae8 100644 --- a/arch/powerpc/platforms/powernv/setup.c +++ b/arch/powerpc/platforms/powernv/setup.c @@ -233,6 +233,10 @@ static void __noreturn pnv_restart(char *cmd) rc = opal_cec_reboot(); else if (strcmp(cmd, "full") == 0) rc = opal_cec_reboot2(OPAL_REBOOT_FULL_IPL, NULL); + else if (strcmp(cmd, "mpipl") == 0) + rc = opal_cec_reboot2(OPAL_REBOOT_MPIPL, NULL); + else if (strcmp(cmd, "error") == 0) + rc = opal_cec_reboot2(OPAL_REBOOT_PLATFORM_ERROR, NULL); else rc = OPAL_UNSUPPORTED; -- 2.9.5