X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fsparc64%2Fprom%2Fcif.S;fp=arch%2Fsparc64%2Fprom%2Fcif.S;h=29d0ae74aed8d8dc32b28f9cc64f4c8aadda7e34;hb=64ba3f394c830ec48a1c31b53dcae312c56f1604;hp=5f27ad779c0c578097218e44b005eaed770acf7d;hpb=be1e6109ac94a859551f8e1774eb9a8469fe055c;p=linux-2.6.git diff --git a/arch/sparc64/prom/cif.S b/arch/sparc64/prom/cif.S index 5f27ad779..29d0ae74a 100644 --- a/arch/sparc64/prom/cif.S +++ b/arch/sparc64/prom/cif.S @@ -1,12 +1,10 @@ /* cif.S: PROM entry/exit assembler trampolines. * - * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) - * Copyright (C) 2005, 2006 David S. Miller + * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + * Copyright (C) 2005 David S. Miller */ #include -#include -#include .text .globl prom_cif_interface @@ -14,16 +12,78 @@ prom_cif_interface: sethi %hi(p1275buf), %o0 or %o0, %lo(p1275buf), %o0 ldx [%o0 + 0x010], %o1 ! prom_cif_stack - save %o1, -192, %sp + save %o1, -0x190, %sp ldx [%i0 + 0x008], %l2 ! prom_cif_handler - mov %g4, %l0 - mov %g5, %l1 - mov %g6, %l3 + rdpr %pstate, %l4 + wrpr %g0, 0x15, %pstate ! save alternate globals + stx %g1, [%sp + 2047 + 0x0b0] + stx %g2, [%sp + 2047 + 0x0b8] + stx %g3, [%sp + 2047 + 0x0c0] + stx %g4, [%sp + 2047 + 0x0c8] + stx %g5, [%sp + 2047 + 0x0d0] + stx %g6, [%sp + 2047 + 0x0d8] + stx %g7, [%sp + 2047 + 0x0e0] + wrpr %g0, 0x814, %pstate ! save interrupt globals + stx %g1, [%sp + 2047 + 0x0e8] + stx %g2, [%sp + 2047 + 0x0f0] + stx %g3, [%sp + 2047 + 0x0f8] + stx %g4, [%sp + 2047 + 0x100] + stx %g5, [%sp + 2047 + 0x108] + stx %g6, [%sp + 2047 + 0x110] + stx %g7, [%sp + 2047 + 0x118] + wrpr %g0, 0x14, %pstate ! save normal globals + stx %g1, [%sp + 2047 + 0x120] + stx %g2, [%sp + 2047 + 0x128] + stx %g3, [%sp + 2047 + 0x130] + stx %g4, [%sp + 2047 + 0x138] + stx %g5, [%sp + 2047 + 0x140] + stx %g6, [%sp + 2047 + 0x148] + stx %g7, [%sp + 2047 + 0x150] + wrpr %g0, 0x414, %pstate ! save mmu globals + stx %g1, [%sp + 2047 + 0x158] + stx %g2, [%sp + 2047 + 0x160] + stx %g3, [%sp + 2047 + 0x168] + stx %g4, [%sp + 2047 + 0x170] + stx %g5, [%sp + 2047 + 0x178] + stx %g6, [%sp + 2047 + 0x180] + stx %g7, [%sp + 2047 + 0x188] + mov %g1, %l0 ! also save to locals, so we can handle + mov %g2, %l1 ! tlb faults later on, when accessing + mov %g3, %l3 ! the stack. + mov %g7, %l5 + wrpr %l4, PSTATE_IE, %pstate ! turn off interrupts call %l2 add %i0, 0x018, %o0 ! prom_args - mov %l0, %g4 - mov %l1, %g5 - mov %l3, %g6 + wrpr %g0, 0x414, %pstate ! restore mmu globals + mov %l0, %g1 + mov %l1, %g2 + mov %l3, %g3 + mov %l5, %g7 + wrpr %g0, 0x14, %pstate ! restore normal globals + ldx [%sp + 2047 + 0x120], %g1 + ldx [%sp + 2047 + 0x128], %g2 + ldx [%sp + 2047 + 0x130], %g3 + ldx [%sp + 2047 + 0x138], %g4 + ldx [%sp + 2047 + 0x140], %g5 + ldx [%sp + 2047 + 0x148], %g6 + ldx [%sp + 2047 + 0x150], %g7 + wrpr %g0, 0x814, %pstate ! restore interrupt globals + ldx [%sp + 2047 + 0x0e8], %g1 + ldx [%sp + 2047 + 0x0f0], %g2 + ldx [%sp + 2047 + 0x0f8], %g3 + ldx [%sp + 2047 + 0x100], %g4 + ldx [%sp + 2047 + 0x108], %g5 + ldx [%sp + 2047 + 0x110], %g6 + ldx [%sp + 2047 + 0x118], %g7 + wrpr %g0, 0x15, %pstate ! restore alternate globals + ldx [%sp + 2047 + 0x0b0], %g1 + ldx [%sp + 2047 + 0x0b8], %g2 + ldx [%sp + 2047 + 0x0c0], %g3 + ldx [%sp + 2047 + 0x0c8], %g4 + ldx [%sp + 2047 + 0x0d0], %g5 + ldx [%sp + 2047 + 0x0d8], %g6 + ldx [%sp + 2047 + 0x0e0], %g7 + wrpr %l4, 0, %pstate ! restore original pstate ret restore @@ -31,18 +91,135 @@ prom_cif_interface: prom_cif_callback: sethi %hi(p1275buf), %o1 or %o1, %lo(p1275buf), %o1 - save %sp, -192, %sp - TRAP_LOAD_THREAD_REG(%g6, %g1) - LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %o0) - ldx [%g6 + TI_TASK], %g4 + save %sp, -0x270, %sp + rdpr %pstate, %l4 + wrpr %g0, 0x15, %pstate ! save PROM alternate globals + stx %g1, [%sp + 2047 + 0x0b0] + stx %g2, [%sp + 2047 + 0x0b8] + stx %g3, [%sp + 2047 + 0x0c0] + stx %g4, [%sp + 2047 + 0x0c8] + stx %g5, [%sp + 2047 + 0x0d0] + stx %g6, [%sp + 2047 + 0x0d8] + stx %g7, [%sp + 2047 + 0x0e0] + ! restore Linux alternate globals + ldx [%sp + 2047 + 0x190], %g1 + ldx [%sp + 2047 + 0x198], %g2 + ldx [%sp + 2047 + 0x1a0], %g3 + ldx [%sp + 2047 + 0x1a8], %g4 + ldx [%sp + 2047 + 0x1b0], %g5 + ldx [%sp + 2047 + 0x1b8], %g6 + ldx [%sp + 2047 + 0x1c0], %g7 + wrpr %g0, 0x814, %pstate ! save PROM interrupt globals + stx %g1, [%sp + 2047 + 0x0e8] + stx %g2, [%sp + 2047 + 0x0f0] + stx %g3, [%sp + 2047 + 0x0f8] + stx %g4, [%sp + 2047 + 0x100] + stx %g5, [%sp + 2047 + 0x108] + stx %g6, [%sp + 2047 + 0x110] + stx %g7, [%sp + 2047 + 0x118] + ! restore Linux interrupt globals + ldx [%sp + 2047 + 0x1c8], %g1 + ldx [%sp + 2047 + 0x1d0], %g2 + ldx [%sp + 2047 + 0x1d8], %g3 + ldx [%sp + 2047 + 0x1e0], %g4 + ldx [%sp + 2047 + 0x1e8], %g5 + ldx [%sp + 2047 + 0x1f0], %g6 + ldx [%sp + 2047 + 0x1f8], %g7 + wrpr %g0, 0x14, %pstate ! save PROM normal globals + stx %g1, [%sp + 2047 + 0x120] + stx %g2, [%sp + 2047 + 0x128] + stx %g3, [%sp + 2047 + 0x130] + stx %g4, [%sp + 2047 + 0x138] + stx %g5, [%sp + 2047 + 0x140] + stx %g6, [%sp + 2047 + 0x148] + stx %g7, [%sp + 2047 + 0x150] + ! restore Linux normal globals + ldx [%sp + 2047 + 0x200], %g1 + ldx [%sp + 2047 + 0x208], %g2 + ldx [%sp + 2047 + 0x210], %g3 + ldx [%sp + 2047 + 0x218], %g4 + ldx [%sp + 2047 + 0x220], %g5 + ldx [%sp + 2047 + 0x228], %g6 + ldx [%sp + 2047 + 0x230], %g7 + wrpr %g0, 0x414, %pstate ! save PROM mmu globals + stx %g1, [%sp + 2047 + 0x158] + stx %g2, [%sp + 2047 + 0x160] + stx %g3, [%sp + 2047 + 0x168] + stx %g4, [%sp + 2047 + 0x170] + stx %g5, [%sp + 2047 + 0x178] + stx %g6, [%sp + 2047 + 0x180] + stx %g7, [%sp + 2047 + 0x188] + ! restore Linux mmu globals + ldx [%sp + 2047 + 0x238], %o0 + ldx [%sp + 2047 + 0x240], %o1 + ldx [%sp + 2047 + 0x248], %l2 + ldx [%sp + 2047 + 0x250], %l3 + ldx [%sp + 2047 + 0x258], %l5 + ldx [%sp + 2047 + 0x260], %l6 + ldx [%sp + 2047 + 0x268], %l7 + ! switch to Linux tba + sethi %hi(sparc64_ttable_tl0), %l1 + rdpr %tba, %l0 ! save PROM tba + mov %o0, %g1 + mov %o1, %g2 + mov %l2, %g3 + mov %l3, %g4 + mov %l5, %g5 + mov %l6, %g6 + mov %l7, %g7 + wrpr %l1, %tba ! install Linux tba + wrpr %l4, 0, %pstate ! restore PSTATE call prom_world - mov 0, %o0 + mov %g0, %o0 ldx [%i1 + 0x000], %l2 call %l2 mov %i0, %o0 mov %o0, %l1 call prom_world - mov 1, %o0 + or %g0, 1, %o0 + wrpr %g0, 0x14, %pstate ! interrupts off + ! restore PROM mmu globals + ldx [%sp + 2047 + 0x158], %o0 + ldx [%sp + 2047 + 0x160], %o1 + ldx [%sp + 2047 + 0x168], %l2 + ldx [%sp + 2047 + 0x170], %l3 + ldx [%sp + 2047 + 0x178], %l5 + ldx [%sp + 2047 + 0x180], %l6 + ldx [%sp + 2047 + 0x188], %l7 + wrpr %g0, 0x414, %pstate ! restore PROM mmu globals + mov %o0, %g1 + mov %o1, %g2 + mov %l2, %g3 + mov %l3, %g4 + mov %l5, %g5 + mov %l6, %g6 + mov %l7, %g7 + wrpr %l0, %tba ! restore PROM tba + wrpr %g0, 0x14, %pstate ! restore PROM normal globals + ldx [%sp + 2047 + 0x120], %g1 + ldx [%sp + 2047 + 0x128], %g2 + ldx [%sp + 2047 + 0x130], %g3 + ldx [%sp + 2047 + 0x138], %g4 + ldx [%sp + 2047 + 0x140], %g5 + ldx [%sp + 2047 + 0x148], %g6 + ldx [%sp + 2047 + 0x150], %g7 + wrpr %g0, 0x814, %pstate ! restore PROM interrupt globals + ldx [%sp + 2047 + 0x0e8], %g1 + ldx [%sp + 2047 + 0x0f0], %g2 + ldx [%sp + 2047 + 0x0f8], %g3 + ldx [%sp + 2047 + 0x100], %g4 + ldx [%sp + 2047 + 0x108], %g5 + ldx [%sp + 2047 + 0x110], %g6 + ldx [%sp + 2047 + 0x118], %g7 + wrpr %g0, 0x15, %pstate ! restore PROM alternate globals + ldx [%sp + 2047 + 0x0b0], %g1 + ldx [%sp + 2047 + 0x0b8], %g2 + ldx [%sp + 2047 + 0x0c0], %g3 + ldx [%sp + 2047 + 0x0c8], %g4 + ldx [%sp + 2047 + 0x0d0], %g5 + ldx [%sp + 2047 + 0x0d8], %g6 + ldx [%sp + 2047 + 0x0e0], %g7 + wrpr %l4, 0, %pstate ret restore %l1, 0, %o0