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, 24(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
 157 GLOBAL 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
 165 GLOBAL 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
 173 GLOBAL 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
 181 GLOBAL lv1_panic
 182         SAVE_LR
 183         LOAD_REGS_8
 184         HVCALL 255
 185         LOAD_LR
 186         blr