1*4882a593Smuzhiyun/* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun/* cif.S: PROM entry/exit assembler trampolines. 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) 5*4882a593Smuzhiyun * Copyright (C) 2005, 2006 David S. Miller <davem@davemloft.net> 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun#include <asm/pstate.h> 9*4882a593Smuzhiyun#include <asm/cpudata.h> 10*4882a593Smuzhiyun#include <asm/thread_info.h> 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun .text 13*4882a593Smuzhiyun .globl prom_cif_direct 14*4882a593Smuzhiyunprom_cif_direct: 15*4882a593Smuzhiyun save %sp, -192, %sp 16*4882a593Smuzhiyun sethi %hi(p1275buf), %o1 17*4882a593Smuzhiyun or %o1, %lo(p1275buf), %o1 18*4882a593Smuzhiyun ldx [%o1 + 0x0008], %l2 ! prom_cif_handler 19*4882a593Smuzhiyun mov %g4, %l0 20*4882a593Smuzhiyun mov %g5, %l1 21*4882a593Smuzhiyun mov %g6, %l3 22*4882a593Smuzhiyun call %l2 23*4882a593Smuzhiyun mov %i0, %o0 ! prom_args 24*4882a593Smuzhiyun mov %l0, %g4 25*4882a593Smuzhiyun mov %l1, %g5 26*4882a593Smuzhiyun mov %l3, %g6 27*4882a593Smuzhiyun ret 28*4882a593Smuzhiyun restore 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun .globl prom_cif_callback 31*4882a593Smuzhiyunprom_cif_callback: 32*4882a593Smuzhiyun sethi %hi(p1275buf), %o1 33*4882a593Smuzhiyun or %o1, %lo(p1275buf), %o1 34*4882a593Smuzhiyun save %sp, -192, %sp 35*4882a593Smuzhiyun TRAP_LOAD_THREAD_REG(%g6, %g1) 36*4882a593Smuzhiyun LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %o0) 37*4882a593Smuzhiyun ldx [%g6 + TI_TASK], %g4 38*4882a593Smuzhiyun call prom_world 39*4882a593Smuzhiyun mov 0, %o0 40*4882a593Smuzhiyun ldx [%i1 + 0x000], %l2 41*4882a593Smuzhiyun call %l2 42*4882a593Smuzhiyun mov %i0, %o0 43*4882a593Smuzhiyun mov %o0, %l1 44*4882a593Smuzhiyun call prom_world 45*4882a593Smuzhiyun mov 1, %o0 46*4882a593Smuzhiyun ret 47*4882a593Smuzhiyun restore %l1, 0, %o0 48*4882a593Smuzhiyun 49