/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *  PS3 bootwrapper hvcalls.
 *
 *  Copyright (C) 2007 Sony Computer Entertainment Inc.
 *  Copyright 2007 Sony Corp.
 */

#include "ppc_asm.h"

        .machine "ppc64"

/*
 * The PS3 hypervisor uses a 64 bit "C" language calling convention.
 * The routines here marshal arguments between the 32 bit wrapper
 * program and the 64 bit hvcalls.
 *
 *  wrapper           lv1
 *  32-bit (h,l)      64-bit
 *
 *  1: r3,r4          <-> r3
 *  2: r5,r6          <-> r4
 *  3: r7,r8          <-> r5
 *  4: r9,r10         <-> r6
 *  5: 8(r1),12(r1)   <-> r7
 *  6: 16(r1),20(r1)  <-> r8
 *  7: 24(r1),28(r1)  <-> r9
 *  8: 32(r1),36(r1)  <-> r10
 *
 */

.macro GLOBAL name
        .section ".text"
        .balign 4
        .globl \name
\name:
.endm

.macro NO_SUPPORT name
        GLOBAL \name
        b ps3_no_support
.endm

.macro HVCALL num
        li r11, \num
        .long 0x44000022
        extsw r3, r3
.endm

.macro SAVE_LR offset=4
        mflr r0
        stw r0, \offset(r1)
.endm

.macro LOAD_LR offset=4
        lwz r0, \offset(r1)
        mtlr r0
.endm

.macro LOAD_64_REG target,high,low
        sldi r11, \high, 32
        or \target, r11, \low
.endm

.macro LOAD_64_STACK target,offset
        ld \target, \offset(r1)
.endm

.macro LOAD_R3
        LOAD_64_REG r3,r3,r4
.endm

.macro LOAD_R4
        LOAD_64_REG r4,r5,r6
.endm

.macro LOAD_R5
        LOAD_64_REG r5,r7,r8
.endm

.macro LOAD_R6
        LOAD_64_REG r6,r9,r10
.endm

.macro LOAD_R7
        LOAD_64_STACK r7,8
.endm

.macro LOAD_R8
        LOAD_64_STACK r8,16
.endm

.macro LOAD_R9
        LOAD_64_STACK r9,24
.endm

.macro LOAD_R10
        LOAD_64_STACK r10,32
.endm

.macro LOAD_REGS_0
        stwu 1,-16(1)
        stw 3, 8(1)
.endm

.macro LOAD_REGS_5
        LOAD_R3
        LOAD_R4
        LOAD_R5
        LOAD_R6
        LOAD_R7
.endm

.macro LOAD_REGS_6
        LOAD_REGS_5
        LOAD_R8
.endm

.macro LOAD_REGS_8
        LOAD_REGS_6
        LOAD_R9
        LOAD_R10
.endm

.macro STORE_REGS_0_1
        lwz r11, 8(r1)
        std r4, 0(r11)
        mr r4, r3
        li r3, 0
        addi r1,r1,16
.endm

.macro STORE_REGS_5_2
        lwz r11, 16(r1)
        std r4, 0(r11)
        lwz r11, 20(r1)
        std r5, 0(r11)
.endm

.macro STORE_REGS_6_1
        lwz r11, 24(r1)
        std r4, 0(r11)
.endm

GLOBAL lv1_get_logical_ppe_id
        SAVE_LR
        LOAD_REGS_0
        HVCALL 69
        STORE_REGS_0_1
        LOAD_LR
        blr

GLOBAL lv1_get_logical_partition_id
        SAVE_LR
        LOAD_REGS_0
        HVCALL 74
        STORE_REGS_0_1
        LOAD_LR
        blr

GLOBAL lv1_get_repository_node_value
        SAVE_LR
        LOAD_REGS_5
        HVCALL 91
        STORE_REGS_5_2
        LOAD_LR
        blr

GLOBAL lv1_panic
        SAVE_LR
        LOAD_REGS_8
        HVCALL 255
        LOAD_LR
        blr