paljtoslave.S revision 8008:257eb95aead3 
1#include	"dc21164FromGasSources.h"	// DECchip 21164 specific definitions
2#include    "ev5_defs.h"
3#include	"fromHudsonOsf.h"		// OSF/1 specific definitions
4#include	"fromHudsonMacros.h"	// Global macro definitions
5#include	"ev5_impure.h"	// Scratch & logout area data structures
6#include	"platform.h"	// Platform specific definitions
7
8
9        .global	palJToSlave
10        .text	3
11
12        /*
13         * args:
14            a0:	 here
15            a1:	 boot location
16            a2:	 CSERVE_J_KTOPAL
17            a3:	 restrart_pv
18            a4:	 vptb
19            a5:  my_rpb
20
21         */
22palJToSlave:
23
24        /*
25         * SRM Console Architecture III 3-26
26         */
27
28        ALIGN_BRANCH
29
30        bis	a3, zero, pv
31        bis	zero, zero, t11
32        bis	zero, zero, ra
33
34        /* Point the Vptbr to a2 */
35
36        mtpr	a4, mVptBr	// Load Mbox copy
37        mtpr	a4, iVptBr	// Load Ibox copy
38        STALL			// don't dual issue the load with mtpr -pb
39
40        /* Turn on superpage mapping in the mbox and icsr */
41        lda	t0, (2<<MCSR_V_SP)(zero) // Get a '10' (binary) in MCSR<SP>
42        STALL			// don't dual issue the load with mtpr -pb
43        mtpr	t0, mcsr		// Set the super page mode enable bit
44        STALL			// don't dual issue the load with mtpr -pb
45
46        lda	t0, 0(zero)
47        mtpr	t0, dtbAsn
48        mtpr	t0, itbAsn
49
50        LDLI	(t1,0x20000000)
51        STALL			// don't dual issue the load with mtpr -pb
52        mfpr	t0, icsr		// Enable superpage mapping
53        STALL			// don't dual issue the load with mtpr -pb
54        bis	t0, t1, t0
55        mtpr	t0, icsr
56
57        STALL                           // Required stall to update chip ...
58        STALL
59        STALL
60        STALL
61        STALL
62
63        ldq_p	s0, PCB_Q_PTBR(a5)
64        sll	s0, VA_S_OFF, s0	// Shift PTBR into position
65        STALL			// don't dual issue the load with mtpr -pb
66        mtpr	s0, ptPtbr		// PHYSICAL MBOX INST -> MT PT20 IN 0,1
67        STALL			// don't dual issue the load with mtpr -pb
68        ldq_p	sp, PCB_Q_KSP(a5)
69
70        //mtpr	a0, excAddr		// Load the dispatch address.
71        //STALL			// don't dual issue the load with mtpr -pb
72        //bis	a3, zero, a0		// first free PFN
73        // ldq_p	a1, PCB_Q_PTBR(a5)	// ptbr
74
75        //ldq_p	a2, 24(zero)		// argc
76        //ldq_p	a3, 32(zero)		// argv
77        //ldq_p	a4, 40(zero)		// environ
78        //lda	a5, 0(zero)		// osf_param
79        //STALL			// don't dual issue the load with mtpr -pb
80        mtpr	zero, dtbIa		// Flush all D-stream TB entries
81        mtpr	zero, itbIa		// Flush all I-stream TB entries
82
83
84        mtpr	a1, excAddr		// Load the dispatch address.
85
86        STALL			// don't dual issue the load with mtpr -pb
87        STALL			// don't dual issue the load with mtpr -pb
88        mtpr	zero, dtbIa		// Flush all D-stream TB entries
89        mtpr	zero, itbIa		// Flush all I-stream TB entries
90        br	zero, 2f
91
92        ALIGN_BLOCK
93
942:	NOP
95        mtpr	zero, icFlush		// Flush the icache.
96        NOP
97        NOP
98
99        NOP				// Required NOPs ... 1-10
100        NOP
101        NOP
102        NOP
103        NOP
104        NOP
105        NOP
106        NOP
107        NOP
108        NOP
109
110        NOP                           // Required NOPs ... 11-20
111        NOP
112        NOP
113        NOP
114        NOP
115        NOP
116        NOP
117        NOP
118        NOP
119        NOP
120
121        NOP                           // Required NOPs ... 21-30
122        NOP
123        NOP
124        NOP
125        NOP
126        NOP
127        NOP
128        NOP
129        NOP
130        NOP
131
132        NOP                           // Required NOPs ... 31-40
133        NOP
134        NOP
135        NOP
136        NOP
137        NOP
138        NOP
139        NOP
140        NOP
141        NOP
142
143
144
145        NOP				// Required NOPs ... 41-44
146        NOP
147        NOP
148        NOP
149
150        hw_rei_stall				// Dispatch to kernel
151
152