diff options
Diffstat (limited to 'arch/ppc/kernel/head_fsl_booke.S')
| -rw-r--r-- | arch/ppc/kernel/head_fsl_booke.S | 66 |
1 files changed, 65 insertions, 1 deletions
diff --git a/arch/ppc/kernel/head_fsl_booke.S b/arch/ppc/kernel/head_fsl_booke.S index f22ddce36135..eb804b7a3cb2 100644 --- a/arch/ppc/kernel/head_fsl_booke.S +++ b/arch/ppc/kernel/head_fsl_booke.S @@ -102,6 +102,7 @@ invstr: mflr r6 /* Make it accessible */ or r7,r7,r4 mtspr SPRN_MAS6,r7 tlbsx 0,r6 /* search MSR[IS], SPID=PID0 */ +#ifndef CONFIG_E200 mfspr r7,SPRN_MAS1 andis. r7,r7,MAS1_VALID@h bne match_TLB @@ -118,6 +119,7 @@ invstr: mflr r6 /* Make it accessible */ or r7,r7,r4 mtspr SPRN_MAS6,r7 tlbsx 0,r6 /* Fall through, we had to match */ +#endif match_TLB: mfspr r7,SPRN_MAS0 rlwinm r3,r7,16,20,31 /* Extract MAS0(Entry) */ @@ -196,8 +198,10 @@ skpinv: addi r6,r6,1 /* Increment */ /* 4. Clear out PIDs & Search info */ li r6,0 mtspr SPRN_PID0,r6 +#ifndef CONFIG_E200 mtspr SPRN_PID1,r6 mtspr SPRN_PID2,r6 +#endif mtspr SPRN_MAS6,r6 /* 5. Invalidate mapping we started in */ @@ -232,7 +236,8 @@ skpinv: addi r6,r6,1 /* Increment */ tlbwe /* 7. Jump to KERNELBASE mapping */ - li r7,0 + lis r7,MSR_KERNEL@h + ori r7,r7,MSR_KERNEL@l bl 1f /* Find our address */ 1: mflr r9 rlwimi r6,r9,0,20,31 @@ -276,7 +281,9 @@ skpinv: addi r6,r6,1 /* Increment */ SET_IVOR(32, SPEUnavailable); SET_IVOR(33, SPEFloatingPointData); SET_IVOR(34, SPEFloatingPointRound); +#ifndef CONFIG_E200 SET_IVOR(35, PerformanceMonitor); +#endif /* Establish the interrupt vector base */ lis r4,interrupt_base@h /* IVPR only uses the high 16-bits */ @@ -284,6 +291,9 @@ skpinv: addi r6,r6,1 /* Increment */ /* Setup the defaults for TLB entries */ li r2,(MAS4_TSIZED(BOOKE_PAGESZ_4K))@l +#ifdef CONFIG_E200 + oris r2,r2,MAS4_TLBSELD(1)@h +#endif mtspr SPRN_MAS4, r2 #if 0 @@ -292,6 +302,24 @@ skpinv: addi r6,r6,1 /* Increment */ oris r2,r2,HID0_DOZE@h mtspr SPRN_HID0, r2 #endif +#ifdef CONFIG_E200 + /* enable dedicated debug exception handling resources (Debug APU) */ + mfspr r2,SPRN_HID0 + ori r2,r2,HID0_DAPUEN@l + mtspr SPRN_HID0,r2 +#endif + +#if !defined(CONFIG_BDI_SWITCH) + /* + * The Abatron BDI JTAG debugger does not tolerate others + * mucking with the debug registers. + */ + lis r2,DBCR0_IDM@h + mtspr SPRN_DBCR0,r2 + /* clear any residual debug events */ + li r2,-1 + mtspr SPRN_DBSR,r2 +#endif /* * This is where the main kernel code starts. @@ -401,7 +429,12 @@ interrupt_base: CRITICAL_EXCEPTION(0x0100, CriticalInput, UnknownException) /* Machine Check Interrupt */ +#ifdef CONFIG_E200 + /* no RFMCI, MCSRRs on E200 */ + CRITICAL_EXCEPTION(0x0200, MachineCheck, MachineCheckException) +#else MCHECK_EXCEPTION(0x0200, MachineCheck, MachineCheckException) +#endif /* Data Storage Interrupt */ START_EXCEPTION(DataStorage) @@ -507,8 +540,13 @@ interrupt_base: #ifdef CONFIG_PPC_FPU FP_UNAVAILABLE_EXCEPTION #else +#ifdef CONFIG_E200 + /* E200 treats 'normal' floating point instructions as FP Unavail exception */ + EXCEPTION(0x0800, FloatingPointUnavailable, ProgramCheckException, EXC_XFER_EE) +#else EXCEPTION(0x0800, FloatingPointUnavailable, UnknownException, EXC_XFER_EE) #endif +#endif /* System Call Interrupt */ START_EXCEPTION(SystemCall) @@ -678,6 +716,7 @@ interrupt_base: /* * Local functions */ + /* * Data TLB exceptions will bail out to this point * if they can't resolve the lightweight TLB fault. @@ -748,6 +787,31 @@ END_FTR_SECTION_IFSET(CPU_FTR_BIG_PHYS) 2: rlwimi r11, r12, 0, 20, 31 /* Extract RPN from PTE and merge with perms */ mtspr SPRN_MAS3, r11 #endif +#ifdef CONFIG_E200 + /* Round robin TLB1 entries assignment */ + mfspr r12, SPRN_MAS0 + + /* Extract TLB1CFG(NENTRY) */ + mfspr r11, SPRN_TLB1CFG + andi. r11, r11, 0xfff + + /* Extract MAS0(NV) */ + andi. r13, r12, 0xfff + addi r13, r13, 1 + cmpw 0, r13, r11 + addi r12, r12, 1 + + /* check if we need to wrap */ + blt 7f + + /* wrap back to first free tlbcam entry */ + lis r13, tlbcam_index@ha + lwz r13, tlbcam_index@l(r13) + rlwimi r12, r13, 0, 20, 31 +7: + mtspr SPRN_MAS0,r12 +#endif /* CONFIG_E200 */ + tlbwe /* Done...restore registers and get out of here. */ |