LXR linux/arch/powerpc/boot/ps3-hvcall.S

   1/*
   2 *  PS3 bootwrapper hvcalls.
   3 *
   4 *  Copyright (C) 2007 Sony Computer Entertainment Inc.
   5 *  Copyright 2007 Sony Corp.
   6 *
   7 *  This program is free software; you can redistribute it and/or modify
   8 *  it under the terms of the GNU General Public License as published by
   9 *  the Free Software Foundation; version 2 of the License.
  10 *
  11 *  This program is distributed in the hope that it will be useful,
  12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 *  GNU General Public License for more details.
  15 *
  16 *  You should have received a copy of the GNU General Public License
  17 *  along with this program; if not, write to the Free Software
  18 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20
  21#include "ppc_asm.h"
  22
  23        .machine "ppc64"
  24
  25/*
  26 * The PS3 hypervisor uses a 64 bit "C" language calling convention.
  27 * The routines here marshal arguments between the 32 bit wrapper
  28 * program and the 64 bit hvcalls.
  29 *
  30 *  wrapper           lv1
  31 *  32-bit (h,l)      64-bit
  32 *
  33 *  1: r3,r4          <-> r3
  34 *  2: r5,r6          <-> r4
  35 *  3: r7,r8          <-> r5
  36 *  4: r9,r10         <-> r6
  37 *  5: 8(r1),12(r1)   <-> r7
  38 *  6: 16(r1),20(r1)  <-> r8
  39 *  7: 24(r1),28(r1)  <-> r9
  40 *  8: 32(r1),36(r1)  <-> r10
  41 *
  42 */
  43
  44.macro GLOBAL name
  45        .section ".text"
  46        .balign 4
  47        .globl \name
  48\name:
  49.endm
  50
  51.macro NO_SUPPORT name
  52        GLOBAL \name
  53        b ps3_no_support
  54.endm
  55
  56.macro HVCALL num
  57        li r11, \num
  58        .long 0x44000022
  59        extsw r3, r3
  60.endm
  61
  62.macro SAVE_LR offset=4
  63        mflr r0
  64        stw r0, \offset(r1)
  65.endm
  66
  67.macro LOAD_LR offset=4
  68        lwz r0, \offset(r1)
  69        mtlr r0
  70.endm
  71
  72.macro LOAD_64_REG target,high,low
  73        sldi r11, \high, 32
  74        or \target, r11, \low
  75.endm
  76
  77.macro LOAD_64_STACK target,offset
  78        ld \target, \offset(r1)
  79.endm
  80
  81.macro LOAD_R3
  82        LOAD_64_REG r3,r3,r4
  83.endm
  84
  85.macro LOAD_R4
  86        LOAD_64_REG r4,r5,r6
  87.endm
  88
  89.macro LOAD_R5
  90        LOAD_64_REG r5,r7,r8
  91.endm
  92
  93.macro LOAD_R6
  94        LOAD_64_REG r6,r9,r10
  95.endm
  96
  97.macro LOAD_R7
  98        LOAD_64_STACK r7,8
  99.endm
 100
 101.macro LOAD_R8
 102        LOAD_64_STACK r8,16
 103.endm
 104
 105.macro LOAD_R9
 106        LOAD_64_STACK r9,24
 107.endm
 108
 109.macro LOAD_R10
 110        LOAD_64_STACK r10,32
 111.endm
 112
 113.macro LOAD_REGS_0
 114        stwu 1,-16(1)
 115        stw 3, 8(1)
 116.endm
 117
 118.macro LOAD_REGS_5
 119        LOAD_R3
 120        LOAD_R4
 121        LOAD_R5
 122        LOAD_R6
 123        LOAD_R7
 124.endm
 125
 126.macro LOAD_REGS_6
 127        LOAD_REGS_5
 128        LOAD_R8
 129.endm
 130
 131.macro LOAD_REGS_8
 132        LOAD_REGS_6
 133        LOAD_R9
 134        LOAD_R10
 135.endm
 136
 137.macro STORE_REGS_0_1
 138        lwz r11, 8(r1)
 139        std r4, 0(r11)
 140        mr r4, r3
 141        li r3, 0
 142        addi r1,r1,16
 143.endm
 144
 145.macro STORE_REGS_5_2
 146        lwz r11, 16(r1)
 147        std r4, 0(r11)
 148        lwz r11, 20(r1)
 149        std r5, 0(r11)
 150.endm
 151
 152.macro STORE_REGS_6_1
 153        lwz r11, 24(r1)
 154        std r4, 0(r11)
 155.endm
 156
 157GLOBAL lv1_get_logical_ppe_id
 158        SAVE_LR
 159        LOAD_REGS_0
 160        HVCALL 69
 161        STORE_REGS_0_1
 162        LOAD_LR
 163        blr
 164
 165GLOBAL lv1_get_logical_partition_id
 166        SAVE_LR
 167        LOAD_REGS_0
 168        HVCALL 74
 169        STORE_REGS_0_1
 170        LOAD_LR
 171        blr
 172
 173GLOBAL lv1_get_repository_node_value
 174        SAVE_LR
 175        LOAD_REGS_5
 176        HVCALL 91
 177        STORE_REGS_5_2
 178        LOAD_LR
 179        blr
 180
 181GLOBAL lv1_panic
 182        SAVE_LR
 183        LOAD_REGS_8
 184        HVCALL 255
 185        LOAD_LR
 186        blr
 187