mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 06:34:11 +08:00
e5a21dd873
Fix a bug in the lv1_get_repository_node_value() routine of the PS3 bootwrapper. Changes in the PS3 system firmware 2.20 cause this bug to hang the system when branching from the bootwrapper to the kernel _start. Since the video system has not yet been enabled at the time the bug is hit, the system hangs with a blank screen. Earlier firmwares don't cause such a catastrophic failure, and so this bug went undetected. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
187 lines
2.9 KiB
ArmAsm
187 lines
2.9 KiB
ArmAsm
/*
|
|
* PS3 bootwrapper hvcalls.
|
|
*
|
|
* Copyright (C) 2007 Sony Computer Entertainment Inc.
|
|
* Copyright 2007 Sony Corp.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#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
|