mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 22:53:55 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
226 lines
6.6 KiB
ArmAsm
226 lines
6.6 KiB
ArmAsm
/* 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
|
|
|