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 /*
  24  * The PS3 hypervisor uses a 64 bit "C" language calling convention.
  25  * The routines here marshal arguments between the 32 bit wrapper
  26  * program and the 64 bit hvcalls.
  27  *
  28  *  wrapper           lv1
  29  *  32-bit (h,l)      64-bit
  30  *
  31  *  1: r3,r4          <-> r3
  32  *  2: r5,r6          <-> r4
  33  *  3: r7,r8          <-> r5
  34  *  4: r9,r10         <-> r6
  35  *  5: 8(r1),12(r1)   <-> r7
  36  *  6: 16(r1),20(r1)  <-> r8
  37  *  7: 24(r1),28(r1)  <-> r9
  38  *  8: 32(r1),36(r1)  <-> r10
  39  *
  40  */
  41
  42 .macro GLOBAL name
  43         .section ".text"
  44         .balign 4
  45         .globl \name
  46 \name:
  47 .endm
  48
  49 .macro NO_SUPPORT name
  50         GLOBAL \name
  51         b ps3_no_support
  52 .endm
  53
  54 .macro HVCALL num
  55         li r11, \num
  56         .long 0x44000022
  57         extsw r3, r3
  58 .endm
  59
  60 .macro SAVE_LR offset=4
  61         mflr r0
  62         stw r0, \offset(r1)
  63 .endm
  64
  65 .macro LOAD_LR offset=4
  66         lwz r0, \offset(r1)
  67         mtlr r0
  68 .endm
  69
  70 .macro LOAD_64_REG target,high,low
  71         sldi r11, \high, 32
  72         or \target, r11, \low
  73 .endm
  74
  75 .macro LOAD_64_STACK target,offset
  76         ld \target, \offset(r1)
  77 .endm
  78
  79 .macro LOAD_R3
  80         LOAD_64_REG r3,r3,r4
  81 .endm
  82
  83 .macro LOAD_R4
  84         LOAD_64_REG r4,r5,r6
  85 .endm
  86
  87 .macro LOAD_R5
  88         LOAD_64_REG r5,r7,r8
  89 .endm
  90
  91 .macro LOAD_R6
  92         LOAD_64_REG r6,r9,r10
  93 .endm
  94
  95 .macro LOAD_R7
  96         LOAD_64_STACK r7,8
  97 .endm
  98
  99 .macro LOAD_R8
 100         LOAD_64_STACK r8,16
 101 .endm
 102
 103 .macro LOAD_R9
 104         LOAD_64_STACK r9,24
 105 .endm
 106
 107 .macro LOAD_R10
 108         LOAD_64_STACK r10,32
 109 .endm
 110
 111 .macro LOAD_REGS_0
 112         stwu 1,-16(1)
 113         stw 3, 8(1)
 114 .endm
 115
 116 .macro LOAD_REGS_5
 117         LOAD_R3
 118         LOAD_R4
 119         LOAD_R5
 120         LOAD_R6
 121         LOAD_R7
 122 .endm
 123
 124 .macro LOAD_REGS_6
 125         LOAD_REGS_5
 126         LOAD_R8
 127 .endm
 128
 129 .macro LOAD_REGS_8
 130         LOAD_REGS_6
 131         LOAD_R9
 132         LOAD_R10
 133 .endm
 134
 135 .macro STORE_REGS_0_1
 136         lwz r11, 8(r1)
 137         std r4, 0(r11)
 138         mr r4, r3
 139         li r3, 0
 140         addi r1,r1,16
 141 .endm
 142
 143 .macro STORE_REGS_5_2
 144         lwz r11, 16(r1)
 145         std r4, 0(r11)
 146         lwz r11, 24(r1)
 147         std r5, 0(r11)
 148 .endm
 149
 150 .macro STORE_REGS_6_1
 151         lwz r11, 24(r1)
 152         std r4, 0(r11)
 153 .endm
 154
 155 GLOBAL lv1_get_logical_ppe_id
 156         SAVE_LR
 157         LOAD_REGS_0
 158         HVCALL 69
 159         STORE_REGS_0_1
 160         LOAD_LR
 161         blr
 162
 163 GLOBAL lv1_get_logical_partition_id
 164         SAVE_LR
 165         LOAD_REGS_0
 166         HVCALL 74
 167         STORE_REGS_0_1
 168         LOAD_LR
 169         blr
 170
 171 GLOBAL lv1_get_repository_node_value
 172         SAVE_LR
 173         LOAD_REGS_5
 174         HVCALL 91
 175         STORE_REGS_5_2
 176         LOAD_LR
 177         blr
 178
 179 GLOBAL lv1_panic
 180         SAVE_LR
 181         LOAD_REGS_8
 182         HVCALL 255
 183         LOAD_LR
 184         blr