xref: /openbmc/linux/arch/sparc/include/asm/head_64.h (revision b2441318)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _SPARC64_HEAD_H
3 #define _SPARC64_HEAD_H
4 
5 #include <asm/pstate.h>
6 
7 	/* wrpr	%g0, val, %gl */
8 #define SET_GL(val)	\
9 	.word	0xa1902000 | val
10 
11 	/* rdpr %gl, %gN */
12 #define GET_GL_GLOBAL(N)	\
13 	.word	0x81540000 | (N << 25)
14 
15 #define KERNBASE	0x400000
16 
17 #define	PTREGS_OFF	(STACK_BIAS + STACKFRAME_SZ)
18 
19 #define	RTRAP_PSTATE		(PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_IE)
20 #define	RTRAP_PSTATE_IRQOFF	(PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV)
21 #define RTRAP_PSTATE_AG_IRQOFF	(PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_AG)
22 
23 #define __CHEETAH_ID	0x003e0014
24 #define __JALAPENO_ID	0x003e0016
25 #define __SERRANO_ID	0x003e0022
26 
27 #define CHEETAH_MANUF		0x003e
28 #define CHEETAH_IMPL		0x0014 /* Ultra-III   */
29 #define CHEETAH_PLUS_IMPL	0x0015 /* Ultra-III+  */
30 #define JALAPENO_IMPL		0x0016 /* Ultra-IIIi  */
31 #define JAGUAR_IMPL		0x0018 /* Ultra-IV    */
32 #define PANTHER_IMPL		0x0019 /* Ultra-IV+   */
33 #define SERRANO_IMPL		0x0022 /* Ultra-IIIi+ */
34 
35 #define BRANCH_IF_SUN4V(tmp1,label)		\
36 	sethi	%hi(is_sun4v), %tmp1;		\
37 	lduw	[%tmp1 + %lo(is_sun4v)], %tmp1; \
38 	brnz,pn	%tmp1, label;			\
39 	 nop
40 
41 #define BRANCH_IF_CHEETAH_BASE(tmp1,tmp2,label)	\
42 	rdpr	%ver, %tmp1;			\
43 	sethi	%hi(__CHEETAH_ID), %tmp2;	\
44 	srlx	%tmp1, 32, %tmp1;		\
45 	or	%tmp2, %lo(__CHEETAH_ID), %tmp2;\
46 	cmp	%tmp1, %tmp2;			\
47 	be,pn	%icc, label;			\
48 	 nop;
49 
50 #define BRANCH_IF_JALAPENO(tmp1,tmp2,label)	\
51 	rdpr	%ver, %tmp1;			\
52 	sethi	%hi(__JALAPENO_ID), %tmp2;	\
53 	srlx	%tmp1, 32, %tmp1;		\
54 	or	%tmp2, %lo(__JALAPENO_ID), %tmp2;\
55 	cmp	%tmp1, %tmp2;			\
56 	be,pn	%icc, label;			\
57 	 nop;
58 
59 #define BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(tmp1,tmp2,label)	\
60 	rdpr	%ver, %tmp1;			\
61 	srlx	%tmp1, (32 + 16), %tmp2;	\
62 	cmp	%tmp2, CHEETAH_MANUF;		\
63 	bne,pt	%xcc, 99f;			\
64 	 sllx	%tmp1, 16, %tmp1;		\
65 	srlx	%tmp1, (32 + 16), %tmp2;	\
66 	cmp	%tmp2, CHEETAH_PLUS_IMPL;	\
67 	bgeu,pt	%xcc, label;			\
68 99:	 nop;
69 
70 #define BRANCH_IF_ANY_CHEETAH(tmp1,tmp2,label)	\
71 	rdpr	%ver, %tmp1;			\
72 	srlx	%tmp1, (32 + 16), %tmp2;	\
73 	cmp	%tmp2, CHEETAH_MANUF;		\
74 	bne,pt	%xcc, 99f;			\
75 	 sllx	%tmp1, 16, %tmp1;		\
76 	srlx	%tmp1, (32 + 16), %tmp2;	\
77 	cmp	%tmp2, CHEETAH_IMPL;		\
78 	bgeu,pt	%xcc, label;			\
79 99:	 nop;
80 
81 #endif /* !(_SPARC64_HEAD_H) */
82