X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/1c79356b52d46aa6b508fb032f5ae709b1f2897b..d12e16782ebf8bb779633dff9e14486293bf6d07:/osfmk/ppc/Firmware.s diff --git a/osfmk/ppc/Firmware.s b/osfmk/ppc/Firmware.s index c7db5a174..3c16dd1df 100644 --- a/osfmk/ppc/Firmware.s +++ b/osfmk/ppc/Firmware.s @@ -39,6 +39,7 @@ #include #include #include +#include #include #include #include @@ -184,8 +185,10 @@ ENTRY(ReadReal, TAG_NO_FRAME_USED) lwz r6,4(r3) /* Get word 1 */ lwz r7,8(r3) /* Get word 2 */ lwz r8,12(r3) /* Get word 3 */ + rlwinm r0,r0,0,MSR_FP_BIT+1,MSR_FP_BIT-1 ; Force floating point off lwz r9,16(r3) /* Get word 4 */ lwz r10,20(r3) /* Get word 5 */ + rlwinm r0,r0,0,MSR_VEC_BIT+1,MSR_VEC_BIT-1 ; Force vectors off lwz r11,24(r3) /* Get word 6 */ lwz r12,28(r3) /* Get word 7 */ @@ -227,7 +230,7 @@ ENTRY(xLoadDBATsLL, TAG_NO_FRAME_USED) lwz r10,24(r3) /* Get DBAT 3 high */ lwz r11,28(r3) /* Get DBAT 3 low */ - sync /* Common decency and the state law require you to wash your hands */ + sync /* Common decency and the state law require that you wash your hands */ mtdbatu 0,r4 /* Load DBAT 0 high */ mtdbatl 0,r5 /* Load DBAT 0 low */ mtdbatu 1,r6 /* Load DBAT 1 high */ @@ -247,7 +250,7 @@ ENTRY(xLoadDBATsLL, TAG_NO_FRAME_USED) ENTRY(LoadIBATs, TAG_NO_FRAME_USED) - lis r0,HIGH_ADDR(LoadIBATsCall) /* Top half of CreateFakeIO firmware call number */ + lis r0,HIGH_ADDR(LoadIBATsCall) /* Top half of LoadIBATsCall firmware call number */ ori r0,r0,LOW_ADDR(LoadIBATsCall) /* Bottom half */ sc /* Do it to it */ blr /* Bye bye, Birdie... */ @@ -263,7 +266,7 @@ ENTRY(xLoadIBATsLL, TAG_NO_FRAME_USED) lwz r10,24(r3) /* Get IBAT 3 high */ lwz r11,28(r3) /* Get IBAT 3 low */ - sync /* Common decency and the state law require you to wash your hands */ + sync /* Common decency and the state law require that you wash your hands */ mtibatu 0,r4 /* Load IBAT 0 high */ mtibatl 0,r5 /* Load IBAT 0 low */ mtibatu 1,r6 /* Load IBAT 1 high */ @@ -306,6 +309,11 @@ ENTRY(CreateFakeIO, TAG_NO_FRAME_USED) ENTRY(CreateFakeDEC, TAG_NO_FRAME_USED) +#if 0 + mflr r4 ; (TEST/DEBUG) + bl EXT(ml_sense_nmi) ; (TEST/DEBUG) + mtlr r4 ; (TEST/DEBUG) +#endif lis r0,HIGH_ADDR(CreateFakeDECCall) /* Top half of CreateFakeDEC firmware call number */ ori r0,r0,LOW_ADDR(CreateFakeDECCall) /* Bottom half */ sc /* Do it to it */ @@ -323,6 +331,17 @@ ENTRY(CreateShutdownCTX, TAG_NO_FRAME_USED) sc /* Do it to it */ blr /* Bye bye, Birdie... */ +/* + * This is the glue to choke system + */ + +ENTRY(ChokeSys, TAG_NO_FRAME_USED) + + lis r0,HIGH_ADDR(Choke) /* Top half of Choke firmware call number */ + ori r0,r0,LOW_ADDR(Choke) /* Bottom half */ + sc /* Do it to it */ + blr /* Bye bye, Birdie... */ + /* * Used to initialize the SCC for debugging output */ @@ -1604,14 +1623,18 @@ ENTRY(CreateFakeDECLL, TAG_NO_FRAME_USED) blr /* Return to interrupt handler */ /* - * Choke the system. This is just a dummy for now, - * but we'll eventually do something. + * Choke the system. */ ENTRY(DoChokeLL, TAG_NO_FRAME_USED) - BREAKPOINT_TRAP /* Dummy for now */ - + mfsprg r11,0 ; Get the per_proc address + lwz r11,PP_TEMPWORK1(r11) ; Restore the return address + li r3,T_CHOKE ; Set external interrupt value + mtlr r11 ; Restore the LR + stw r3,saveexception(r13) ; Modify the exception type to external + blr ; Return to interrupt handler + /* * Set the low level trace flags */ @@ -1635,9 +1658,11 @@ ltsNoMSR: li r0,loadMSR ; Get the MSR setter SC ltsNoMSRx: lis r5,hi16(EXT(trcWork)) ; Get trace area + rlwinm r12,r12,0,MSR_FP_BIT+1,MSR_FP_BIT-1 ; Force floating point off ori r5,r5,lo16(EXT(trcWork)) ; again lwz r3,traceMask(r5) /* Get the old trace flags to pass back */ + rlwinm r12,r12,0,MSR_VEC_BIT+1,MSR_VEC_BIT-1 ; Force vectors off stw r4,traceMask(r5) /* Replace with the new ones */ mtmsr r12 /* Restore the MSR */ @@ -1831,10 +1856,12 @@ ENTRY(checkNMI,TAG_NO_FRAME_USED) ori r7,r7,0x0020 /* Find it */ dcbi 0,r7 /* Toss it */ sync /* Sync it */ + rlwinm r9,r9,0,MSR_FP_BIT+1,MSR_FP_BIT-1 ; Force floating point off eieio /* Get it */ lwz r6,0x000C(r7) /* Check it */ eieio /* Fence it */ dcbi 0,r7 /* Toss it */ + rlwinm r9,r9,0,MSR_VEC_BIT+1,MSR_VEC_BIT-1 ; Force vectors off rlwinm. r4,r6,0,19,19 /* Check it */ rlwinm r6,r6,0,20,18 /* Clear it */ sync /* Sync it */ @@ -2054,6 +2081,8 @@ waytoofar2: mtmsr r10 ; Back to normal LEXT(stFloat) mfmsr r0 ; Save the MSR + rlwinm r0,r0,0,MSR_FP_BIT+1,MSR_FP_BIT-1 ; Force floating point off + rlwinm r0,r0,0,MSR_VEC_BIT+1,MSR_VEC_BIT-1 ; Force vectors off rlwinm r4,r0,0,MSR_EE_BIT,MSR_EE_BIT ; Turn off interruptions ori r4,r4,lo16(MASK(MSR_FP)) ; Enable floating point mtmsr r4 @@ -2108,14 +2137,16 @@ LEXT(stFloat) LEXT(stVectors) - mfpvr r6 ; Get machine type + + mfsprg r6,2 ; Get features mr r5,r3 ; Save area address - rlwinm r6,r6,16,17,31 ; Rotate on it + rlwinm. r6,r6,0,pfAltivecb,pfAltivecb ; Do we have Altivec? li r3,0 ; Assume failure - cmplwi r6,PROCESSOR_VERSION_7400 ; Do we have Altivec? - bltlr+ ; No... + beqlr- ; No... mfmsr r0 ; Save the MSR + rlwinm r0,r0,0,MSR_FP_BIT+1,MSR_FP_BIT-1 ; Force floating point off + rlwinm r0,r0,0,MSR_VEC_BIT+1,MSR_VEC_BIT-1 ; Force vectors off rlwinm r4,r0,0,MSR_EE_BIT,MSR_EE_BIT ; Turn off interruptions oris r4,r4,hi16(MASK(MSR_VEC)) ; Enable vectors mtmsr r4 @@ -2191,6 +2222,7 @@ LEXT(stVectors) lvxl v31,0,r5 mtmsr r0 isync + blr @@ -2204,6 +2236,8 @@ LEXT(stVectors) LEXT(stSpecrs) mfmsr r0 ; Save the MSR + rlwinm r0,r0,0,MSR_FP_BIT+1,MSR_FP_BIT-1 ; Force floating point off + rlwinm r0,r0,0,MSR_VEC_BIT+1,MSR_VEC_BIT-1 ; Force vectors off rlwinm r4,r0,0,MSR_EE_BIT,MSR_EE_BIT ; Turn off interruptions mtmsr r4 isync @@ -2332,4 +2366,5 @@ nnmax: stw r4,(48*4)(r3) mtmsr r0 isync + blr