| /* $Id: trampoline.S,v 1.26 2002/02/09 19:49:30 davem Exp $ |
| * trampoline.S: Jump start slave processors on sparc64. |
| * |
| * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) |
| */ |
| |
| #include <asm/head.h> |
| #include <asm/asi.h> |
| #include <asm/lsu.h> |
| #include <asm/dcr.h> |
| #include <asm/dcu.h> |
| #include <asm/pstate.h> |
| #include <asm/page.h> |
| #include <asm/pgtable.h> |
| #include <asm/spitfire.h> |
| #include <asm/processor.h> |
| #include <asm/thread_info.h> |
| #include <asm/mmu.h> |
| |
| .data |
| .align 8 |
| call_method: |
| .asciz "call-method" |
| .align 8 |
| itlb_load: |
| .asciz "SUNW,itlb-load" |
| .align 8 |
| dtlb_load: |
| .asciz "SUNW,dtlb-load" |
| |
| .text |
| .align 8 |
| .globl sparc64_cpu_startup, sparc64_cpu_startup_end |
| sparc64_cpu_startup: |
| flushw |
| |
| BRANCH_IF_CHEETAH_BASE(g1,g5,cheetah_startup) |
| BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g1,g5,cheetah_plus_startup) |
| |
| ba,pt %xcc, spitfire_startup |
| nop |
| |
| cheetah_plus_startup: |
| /* Preserve OBP chosen DCU and DCR register settings. */ |
| ba,pt %xcc, cheetah_generic_startup |
| nop |
| |
| cheetah_startup: |
| mov DCR_BPE | DCR_RPE | DCR_SI | DCR_IFPOE | DCR_MS, %g1 |
| wr %g1, %asr18 |
| |
| sethi %uhi(DCU_ME|DCU_RE|DCU_HPE|DCU_SPE|DCU_SL|DCU_WE), %g5 |
| or %g5, %ulo(DCU_ME|DCU_RE|DCU_HPE|DCU_SPE|DCU_SL|DCU_WE), %g5 |
| sllx %g5, 32, %g5 |
| or %g5, DCU_DM | DCU_IM | DCU_DC | DCU_IC, %g5 |
| stxa %g5, [%g0] ASI_DCU_CONTROL_REG |
| membar #Sync |
| |
| cheetah_generic_startup: |
| mov TSB_EXTENSION_P, %g3 |
| stxa %g0, [%g3] ASI_DMMU |
| stxa %g0, [%g3] ASI_IMMU |
| membar #Sync |
| |
| mov TSB_EXTENSION_S, %g3 |
| stxa %g0, [%g3] ASI_DMMU |
| membar #Sync |
| |
| mov TSB_EXTENSION_N, %g3 |
| stxa %g0, [%g3] ASI_DMMU |
| stxa %g0, [%g3] ASI_IMMU |
| membar #Sync |
| |
| /* Disable STICK_INT interrupts. */ |
| sethi %hi(0x80000000), %g5 |
| sllx %g5, 32, %g5 |
| wr %g5, %asr25 |
| |
| ba,pt %xcc, startup_continue |
| nop |
| |
| spitfire_startup: |
| mov (LSU_CONTROL_IC | LSU_CONTROL_DC | LSU_CONTROL_IM | LSU_CONTROL_DM), %g1 |
| stxa %g1, [%g0] ASI_LSU_CONTROL |
| membar #Sync |
| |
| startup_continue: |
| wrpr %g0, 15, %pil |
| |
| sethi %hi(0x80000000), %g2 |
| sllx %g2, 32, %g2 |
| wr %g2, 0, %tick_cmpr |
| |
| /* Call OBP by hand to lock KERNBASE into i/d tlbs. |
| * We lock 2 consequetive entries if we are 'bigkernel'. |
| */ |
| mov %o0, %l0 |
| |
| sethi %hi(prom_entry_lock), %g2 |
| 1: ldstub [%g2 + %lo(prom_entry_lock)], %g1 |
| membar #StoreLoad | #StoreStore |
| brnz,pn %g1, 1b |
| nop |
| |
| sethi %hi(p1275buf), %g2 |
| or %g2, %lo(p1275buf), %g2 |
| ldx [%g2 + 0x10], %l2 |
| mov %sp, %l1 |
| add %l2, -(192 + 128), %sp |
| flushw |
| |
| sethi %hi(call_method), %g2 |
| or %g2, %lo(call_method), %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x00] |
| mov 5, %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x08] |
| mov 1, %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x10] |
| sethi %hi(itlb_load), %g2 |
| or %g2, %lo(itlb_load), %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x18] |
| sethi %hi(mmu_ihandle_cache), %g2 |
| lduw [%g2 + %lo(mmu_ihandle_cache)], %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x20] |
| sethi %hi(KERNBASE), %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x28] |
| sethi %hi(kern_locked_tte_data), %g2 |
| ldx [%g2 + %lo(kern_locked_tte_data)], %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x30] |
| |
| mov 15, %g2 |
| BRANCH_IF_ANY_CHEETAH(g1,g5,1f) |
| |
| mov 63, %g2 |
| 1: |
| stx %g2, [%sp + 2047 + 128 + 0x38] |
| sethi %hi(p1275buf), %g2 |
| or %g2, %lo(p1275buf), %g2 |
| ldx [%g2 + 0x08], %o1 |
| call %o1 |
| add %sp, (2047 + 128), %o0 |
| |
| sethi %hi(bigkernel), %g2 |
| lduw [%g2 + %lo(bigkernel)], %g2 |
| cmp %g2, 0 |
| be,pt %icc, do_dtlb |
| nop |
| |
| sethi %hi(call_method), %g2 |
| or %g2, %lo(call_method), %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x00] |
| mov 5, %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x08] |
| mov 1, %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x10] |
| sethi %hi(itlb_load), %g2 |
| or %g2, %lo(itlb_load), %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x18] |
| sethi %hi(mmu_ihandle_cache), %g2 |
| lduw [%g2 + %lo(mmu_ihandle_cache)], %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x20] |
| sethi %hi(KERNBASE + 0x400000), %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x28] |
| sethi %hi(kern_locked_tte_data), %g2 |
| ldx [%g2 + %lo(kern_locked_tte_data)], %g2 |
| sethi %hi(0x400000), %g1 |
| add %g2, %g1, %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x30] |
| |
| mov 14, %g2 |
| BRANCH_IF_ANY_CHEETAH(g1,g5,1f) |
| |
| mov 62, %g2 |
| 1: |
| stx %g2, [%sp + 2047 + 128 + 0x38] |
| sethi %hi(p1275buf), %g2 |
| or %g2, %lo(p1275buf), %g2 |
| ldx [%g2 + 0x08], %o1 |
| call %o1 |
| add %sp, (2047 + 128), %o0 |
| |
| do_dtlb: |
| sethi %hi(call_method), %g2 |
| or %g2, %lo(call_method), %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x00] |
| mov 5, %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x08] |
| mov 1, %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x10] |
| sethi %hi(dtlb_load), %g2 |
| or %g2, %lo(dtlb_load), %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x18] |
| sethi %hi(mmu_ihandle_cache), %g2 |
| lduw [%g2 + %lo(mmu_ihandle_cache)], %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x20] |
| sethi %hi(KERNBASE), %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x28] |
| sethi %hi(kern_locked_tte_data), %g2 |
| ldx [%g2 + %lo(kern_locked_tte_data)], %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x30] |
| |
| mov 15, %g2 |
| BRANCH_IF_ANY_CHEETAH(g1,g5,1f) |
| |
| mov 63, %g2 |
| 1: |
| |
| stx %g2, [%sp + 2047 + 128 + 0x38] |
| sethi %hi(p1275buf), %g2 |
| or %g2, %lo(p1275buf), %g2 |
| ldx [%g2 + 0x08], %o1 |
| call %o1 |
| add %sp, (2047 + 128), %o0 |
| |
| sethi %hi(bigkernel), %g2 |
| lduw [%g2 + %lo(bigkernel)], %g2 |
| cmp %g2, 0 |
| be,pt %icc, do_unlock |
| nop |
| |
| sethi %hi(call_method), %g2 |
| or %g2, %lo(call_method), %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x00] |
| mov 5, %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x08] |
| mov 1, %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x10] |
| sethi %hi(dtlb_load), %g2 |
| or %g2, %lo(dtlb_load), %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x18] |
| sethi %hi(mmu_ihandle_cache), %g2 |
| lduw [%g2 + %lo(mmu_ihandle_cache)], %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x20] |
| sethi %hi(KERNBASE + 0x400000), %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x28] |
| sethi %hi(kern_locked_tte_data), %g2 |
| ldx [%g2 + %lo(kern_locked_tte_data)], %g2 |
| sethi %hi(0x400000), %g1 |
| add %g2, %g1, %g2 |
| stx %g2, [%sp + 2047 + 128 + 0x30] |
| |
| mov 14, %g2 |
| BRANCH_IF_ANY_CHEETAH(g1,g5,1f) |
| |
| mov 62, %g2 |
| 1: |
| |
| stx %g2, [%sp + 2047 + 128 + 0x38] |
| sethi %hi(p1275buf), %g2 |
| or %g2, %lo(p1275buf), %g2 |
| ldx [%g2 + 0x08], %o1 |
| call %o1 |
| add %sp, (2047 + 128), %o0 |
| |
| do_unlock: |
| sethi %hi(prom_entry_lock), %g2 |
| stb %g0, [%g2 + %lo(prom_entry_lock)] |
| membar #StoreStore | #StoreLoad |
| |
| mov %l1, %sp |
| flushw |
| |
| mov %l0, %o0 |
| |
| wrpr %g0, (PSTATE_PRIV | PSTATE_PEF), %pstate |
| wr %g0, 0, %fprs |
| |
| /* XXX Buggy PROM... */ |
| srl %o0, 0, %o0 |
| ldx [%o0], %g6 |
| |
| wr %g0, ASI_P, %asi |
| |
| mov PRIMARY_CONTEXT, %g7 |
| stxa %g0, [%g7] ASI_DMMU |
| membar #Sync |
| mov SECONDARY_CONTEXT, %g7 |
| stxa %g0, [%g7] ASI_DMMU |
| membar #Sync |
| |
| mov 1, %g5 |
| sllx %g5, THREAD_SHIFT, %g5 |
| sub %g5, (STACKFRAME_SZ + STACK_BIAS), %g5 |
| add %g6, %g5, %sp |
| mov 0, %fp |
| |
| wrpr %g0, 0, %wstate |
| wrpr %g0, 0, %tl |
| |
| /* Setup the trap globals, then we can resurface. */ |
| rdpr %pstate, %o1 |
| mov %g6, %o2 |
| wrpr %o1, PSTATE_AG, %pstate |
| sethi %hi(sparc64_ttable_tl0), %g5 |
| wrpr %g5, %tba |
| mov %o2, %g6 |
| |
| wrpr %o1, PSTATE_MG, %pstate |
| #define KERN_HIGHBITS ((_PAGE_VALID|_PAGE_SZ4MB)^0xfffff80000000000) |
| #define KERN_LOWBITS (_PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_W) |
| |
| mov TSB_REG, %g1 |
| stxa %g0, [%g1] ASI_DMMU |
| membar #Sync |
| mov TLB_SFSR, %g1 |
| sethi %uhi(KERN_HIGHBITS), %g2 |
| or %g2, %ulo(KERN_HIGHBITS), %g2 |
| sllx %g2, 32, %g2 |
| or %g2, KERN_LOWBITS, %g2 |
| |
| BRANCH_IF_ANY_CHEETAH(g3,g7,9f) |
| |
| ba,pt %xcc, 1f |
| nop |
| |
| 9: |
| sethi %uhi(VPTE_BASE_CHEETAH), %g3 |
| or %g3, %ulo(VPTE_BASE_CHEETAH), %g3 |
| ba,pt %xcc, 2f |
| sllx %g3, 32, %g3 |
| 1: |
| sethi %uhi(VPTE_BASE_SPITFIRE), %g3 |
| or %g3, %ulo(VPTE_BASE_SPITFIRE), %g3 |
| sllx %g3, 32, %g3 |
| |
| 2: |
| clr %g7 |
| #undef KERN_HIGHBITS |
| #undef KERN_LOWBITS |
| |
| wrpr %o1, 0x0, %pstate |
| ldx [%g6 + TI_TASK], %g4 |
| |
| wrpr %g0, 0, %wstate |
| |
| call init_irqwork_curcpu |
| nop |
| |
| BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g2,g3,1f) |
| ba,pt %xcc, 2f |
| nop |
| |
| 1: /* Start using proper page size encodings in ctx register. */ |
| sethi %uhi(CTX_CHEETAH_PLUS_NUC), %g3 |
| mov PRIMARY_CONTEXT, %g1 |
| sllx %g3, 32, %g3 |
| sethi %hi(CTX_CHEETAH_PLUS_CTX0), %g2 |
| or %g3, %g2, %g3 |
| stxa %g3, [%g1] ASI_DMMU |
| membar #Sync |
| |
| 2: |
| rdpr %pstate, %o1 |
| or %o1, PSTATE_IE, %o1 |
| wrpr %o1, 0, %pstate |
| |
| call prom_set_trap_table |
| sethi %hi(sparc64_ttable_tl0), %o0 |
| |
| call smp_callin |
| nop |
| call cpu_idle |
| mov 0, %o0 |
| call cpu_panic |
| nop |
| 1: b,a,pt %xcc, 1b |
| |
| .align 8 |
| sparc64_cpu_startup_end: |
