xref: /openbmc/linux/arch/powerpc/boot/ps3-hvcall.S (revision 873e65bc)
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 *  PS3 bootwrapper hvcalls.
4 *
5 *  Copyright (C) 2007 Sony Computer Entertainment Inc.
6 *  Copyright 2007 Sony Corp.
7 */
8
9#include "ppc_asm.h"
10
11	.machine "ppc64"
12
13/*
14 * The PS3 hypervisor uses a 64 bit "C" language calling convention.
15 * The routines here marshal arguments between the 32 bit wrapper
16 * program and the 64 bit hvcalls.
17 *
18 *  wrapper           lv1
19 *  32-bit (h,l)      64-bit
20 *
21 *  1: r3,r4          <-> r3
22 *  2: r5,r6          <-> r4
23 *  3: r7,r8          <-> r5
24 *  4: r9,r10         <-> r6
25 *  5: 8(r1),12(r1)   <-> r7
26 *  6: 16(r1),20(r1)  <-> r8
27 *  7: 24(r1),28(r1)  <-> r9
28 *  8: 32(r1),36(r1)  <-> r10
29 *
30 */
31
32.macro GLOBAL name
33	.section ".text"
34	.balign 4
35	.globl \name
36\name:
37.endm
38
39.macro NO_SUPPORT name
40	GLOBAL \name
41	b ps3_no_support
42.endm
43
44.macro HVCALL num
45	li r11, \num
46	.long 0x44000022
47	extsw r3, r3
48.endm
49
50.macro SAVE_LR offset=4
51	mflr r0
52	stw r0, \offset(r1)
53.endm
54
55.macro LOAD_LR offset=4
56	lwz r0, \offset(r1)
57	mtlr r0
58.endm
59
60.macro LOAD_64_REG target,high,low
61	sldi r11, \high, 32
62	or \target, r11, \low
63.endm
64
65.macro LOAD_64_STACK target,offset
66	ld \target, \offset(r1)
67.endm
68
69.macro LOAD_R3
70	LOAD_64_REG r3,r3,r4
71.endm
72
73.macro LOAD_R4
74	LOAD_64_REG r4,r5,r6
75.endm
76
77.macro LOAD_R5
78	LOAD_64_REG r5,r7,r8
79.endm
80
81.macro LOAD_R6
82	LOAD_64_REG r6,r9,r10
83.endm
84
85.macro LOAD_R7
86	LOAD_64_STACK r7,8
87.endm
88
89.macro LOAD_R8
90	LOAD_64_STACK r8,16
91.endm
92
93.macro LOAD_R9
94	LOAD_64_STACK r9,24
95.endm
96
97.macro LOAD_R10
98	LOAD_64_STACK r10,32
99.endm
100
101.macro LOAD_REGS_0
102	stwu 1,-16(1)
103	stw 3, 8(1)
104.endm
105
106.macro LOAD_REGS_5
107	LOAD_R3
108	LOAD_R4
109	LOAD_R5
110	LOAD_R6
111	LOAD_R7
112.endm
113
114.macro LOAD_REGS_6
115	LOAD_REGS_5
116	LOAD_R8
117.endm
118
119.macro LOAD_REGS_8
120	LOAD_REGS_6
121	LOAD_R9
122	LOAD_R10
123.endm
124
125.macro STORE_REGS_0_1
126	lwz r11, 8(r1)
127	std r4, 0(r11)
128	mr r4, r3
129	li r3, 0
130	addi r1,r1,16
131.endm
132
133.macro STORE_REGS_5_2
134	lwz r11, 16(r1)
135	std r4, 0(r11)
136	lwz r11, 20(r1)
137	std r5, 0(r11)
138.endm
139
140.macro STORE_REGS_6_1
141	lwz r11, 24(r1)
142	std r4, 0(r11)
143.endm
144
145GLOBAL lv1_get_logical_ppe_id
146	SAVE_LR
147	LOAD_REGS_0
148	HVCALL 69
149	STORE_REGS_0_1
150	LOAD_LR
151	blr
152
153GLOBAL lv1_get_logical_partition_id
154	SAVE_LR
155	LOAD_REGS_0
156	HVCALL 74
157	STORE_REGS_0_1
158	LOAD_LR
159	blr
160
161GLOBAL lv1_get_repository_node_value
162	SAVE_LR
163	LOAD_REGS_5
164	HVCALL 91
165	STORE_REGS_5_2
166	LOAD_LR
167	blr
168
169GLOBAL lv1_panic
170	SAVE_LR
171	LOAD_REGS_8
172	HVCALL 255
173	LOAD_LR
174	blr
175