From ed79ba9e15f84cef05aba5cbfe6e93f9b43c31f4 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 19 Sep 2011 17:45:04 +0000 Subject: powerpc/powernv: Machine check and other system interrupts OPAL can handle various interrupt for us such as Machine Checks (it performs all sorts of recovery tasks and passes back control to us with informations about the error), Hardware Management Interrupts and Softpatch interrupts. This wires up the mechanisms and prints out specific informations returned by HAL when a machine check occurs. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/exceptions-64s.S | 27 +++++++++++++++++++++++---- 1 file changed, 23 insertions(+), 4 deletions(-) (limited to 'arch/powerpc/kernel/exceptions-64s.S') diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 41b02c792aa3..d51458fa8dee 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1143,7 +1143,7 @@ _GLOBAL(do_stab_bolted) rfid b . /* prevent speculative execution */ -#ifdef CONFIG_PPC_PSERIES +#if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) /* * Data area reserved for FWNMI option. * This address (0x7000) is fixed by the RPA. @@ -1151,7 +1151,7 @@ _GLOBAL(do_stab_bolted) .= 0x7000 .globl fwnmi_data_area fwnmi_data_area: -#endif /* CONFIG_PPC_PSERIES */ +#endif /* defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) */ /* iSeries does not use the FWNMI stuff, so it is safe to put * this here, even if we later allow kernels that will boot on @@ -1176,9 +1176,12 @@ xLparMap: #endif /* CONFIG_PPC_ISERIES */ -#ifdef CONFIG_PPC_PSERIES +#if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) + /* pseries and powernv need to keep the whole page from + * 0x7000 to 0x8000 free for use by the firmware + */ . = 0x8000 -#endif /* CONFIG_PPC_PSERIES */ +#endif /* defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) */ /* * Space for CPU0's segment table. @@ -1193,3 +1196,19 @@ xLparMap: .globl initial_stab initial_stab: .space 4096 +#ifdef CONFIG_PPC_POWERNV +_GLOBAL(opal_mc_secondary_handler) + HMT_MEDIUM + SET_SCRATCH0(r13) + GET_PACA(r13) + clrldi r3,r3,2 + tovirt(r3,r3) + std r3,PACA_OPAL_MC_EVT(r13) + ld r13,OPAL_MC_SRR0(r3) + mtspr SPRN_SRR0,r13 + ld r13,OPAL_MC_SRR1(r3) + mtspr SPRN_SRR1,r13 + ld r3,OPAL_MC_GPR3(r3) + GET_SCRATCH0(r13) + b machine_check_pSeries +#endif /* CONFIG_PPC_POWERNV */ -- cgit v1.2.3