From 37f6f8e88caef5f69774b82117ca35bdc4a985d8 Mon Sep 17 00:00:00 2001 From: Oliver O'Halloran Date: Fri, 1 Nov 2019 19:55:22 +1100 Subject: [PATCH] powerpc/powernv: Allow manually invoking special reboots 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 Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20191101085522.3055-2-oohall@gmail.com --- 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 83498604d322..11fdae81b5dd 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; -- 2.25.1