| /* cif.S: PROM entry/exit assembler trampolines. |
| * |
| * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| * Copyright (C) 2005 David S. Miller <davem@davemloft.net> |
| */ |
| |
| #include <asm/pstate.h> |
| |
| .text |
| .globl prom_cif_interface |
| prom_cif_interface: |
| sethi %hi(p1275buf), %o0 |
| or %o0, %lo(p1275buf), %o0 |
| ldx [%o0 + 0x010], %o1 ! prom_cif_stack |
| save %o1, -0x190, %sp |
| ldx [%i0 + 0x008], %l2 ! prom_cif_handler |
| 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 |
| 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 |
| |
| .globl prom_cif_callback |
| prom_cif_callback: |
| sethi %hi(p1275buf), %o1 |
| or %o1, %lo(p1275buf), %o1 |
| 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 %g0, %o0 |
| ldx [%i1 + 0x000], %l2 |
| call %l2 |
| mov %i0, %o0 |
| mov %o0, %l1 |
| call prom_world |
| 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 |
| |
