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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [sparc/] [kernel/] [head.S] - Blame information for rev 1777

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1 1624 jcastillo 
/* $Id: head.S,v 1.1 2005-12-20 09:50:43 jcastillo Exp $
2 
 * head.S: The initial boot code for the Sparc port of Linux.
3 
 *
4 
 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
5 
 * Copyright (C) 1995 Peter Zaitcev   (Zaitcev@ipmce.su)
6 
 */
7 
 
8 
#include
9 
#include
10 
 
11 
#include
12 
#include
13 
#include
14 
#include
15 
#include
16 
#include
17 
#include
18 
#include
19 
#include
20 
 
21 
        .data
22 
/*
23 
 * The following are used with the prom_vector node-ops to figure out
24 
 * the cpu-type
25 
 */
26 
 
27 
        .align 4
28 
        .globl  C_LABEL(cputyp)
29 
C_LABEL(cputyp):
30 
        .word   1
31 
 
32 
        .align 4
33 
        .globl C_LABEL(cputypval)
34 
C_LABEL(cputypval):
35 
        .asciz "sun4c"
36 
        .ascii "     "
37 
 
38 
C_LABEL(cputypvalend):
39 
C_LABEL(cputypvallen) = C_LABEL(cputypvar) - C_LABEL(cputypval)
40 
 
41 
        .align 4
42 
/*
43 
 * Sun people can't spell worth damn. "compatability" indeed.
44 
 * At least we *know* we can't spell, and use a spell-checker.
45 
 */
46 
 
47 
/* Uh, actually Linus it is I who cannot spell. Too much murky
48 
 * Sparc assembly will do this to ya.
49 
 */
50 
C_LABEL(cputypvar):
51 
        .asciz "compatability"
52 
 
53 
/* Tested on SS-5, SS-10. Probably someone at Sun applied a spell-checker. */
54 
        .align 4
55 
C_LABEL(cputypvar_sun4m):
56 
        .asciz "compatible"
57 
 
58 
        .align 4
59 
sun4_notsup:
60 
        .asciz  "Sparc-Linux sun4 support not implemented yet\n\n"
61 
        .align 4
62 
 
63 
sun4d_notsup:
64 
        .asciz  "Sparc-Linux sun4d support does not exist\n\n"
65 
        .align 4
66 
 
67 
sun4e_notsup:
68 
        .asciz  "Sparc-Linux sun4e support does not exist\n\n"
69 
        .align 4
70 
 
71 
sun4u_notsup:
72 
        .asciz  "Sparc-Linux sun4u support does not exist\n\n"
73 
        .align 4
74 
 
75 
        /* The Sparc trap table, bootloader gives us control at _start. */
76 
        .text
77 
        .globl  start, _stext, _start, __stext
78 
        .globl  C_LABEL(trapbase)
79 
_start:   /* danger danger */
80 
__stext:
81 
_stext:
82 
start:
83 
C_LABEL(trapbase):
84 
#ifdef __SMP__
85 
C_LABEL(trapbase_cpu0):
86 
#endif
87 
/* We get control passed to us here at t_zero. */
88 
t_zero: b gokernel; nop; nop; nop;
89 
t_tflt: SPARC_TFAULT                        /* Inst. Access Exception        */
90 
t_bins: TRAP_ENTRY(0x2, bad_instruction)    /* Illegal Instruction           */
91 
t_pins: TRAP_ENTRY(0x3, priv_instruction)   /* Privileged Instruction        */
92 
t_fpd:  TRAP_ENTRY(0x4, fpd_trap_handler)   /* Floating Point Disabled       */
93 
t_wovf: WINDOW_SPILL                        /* Window Overflow               */
94 
t_wunf: WINDOW_FILL                         /* Window Underflow              */
95 
t_mna:  TRAP_ENTRY(0x7, mna_handler)        /* Memory Address Not Aligned    */
96 
t_fpe:  TRAP_ENTRY(0x8, fpe_trap_handler)   /* Floating Point Exception      */
97 
t_dflt: SPARC_DFAULT                        /* Data Miss Exception           */
98 
t_tio:  TRAP_ENTRY(0xa, do_tag_overflow)    /* Tagged Instruction Ovrflw     */
99 
t_wpt:  TRAP_ENTRY(0xb, do_watchpoint)      /* Watchpoint Detected           */
100 
t_badc: BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
101 
t_irq1: TRAP_ENTRY_INTERRUPT(1)             /* IRQ Software/SBUS Level 1     */
102 
t_irq2: TRAP_ENTRY_INTERRUPT(2)             /* IRQ SBUS Level 2              */
103 
t_irq3: TRAP_ENTRY_INTERRUPT(3)             /* IRQ SCSI/DMA/SBUS Level 3     */
104 
t_irq4: TRAP_ENTRY_INTERRUPT(4)             /* IRQ Software Level 4          */
105 
t_irq5: TRAP_ENTRY_INTERRUPT(5)             /* IRQ SBUS/Ethernet Level 5     */
106 
t_irq6: TRAP_ENTRY_INTERRUPT(6)             /* IRQ Software Level 6          */
107 
t_irq7: TRAP_ENTRY_INTERRUPT(7)             /* IRQ Video/SBUS Level 5        */
108 
t_irq8: TRAP_ENTRY_INTERRUPT(8)             /* IRQ SBUS Level 6              */
109 
t_irq9: TRAP_ENTRY_INTERRUPT(9)             /* IRQ SBUS Level 7              */
110 
t_irq10:TRAP_ENTRY_INTERRUPT(10)            /* IRQ Timer #1 (one we use)     */
111 
t_irq11:TRAP_ENTRY_INTERRUPT(11)            /* IRQ Floppy Intr.              */
112 
t_irq12:TRAP_ENTRY_INTERRUPT(12)            /* IRQ Zilog serial chip         */
113 
t_irq13:TRAP_ENTRY_INTERRUPT(13)            /* IRQ Audio Intr.               */
114 
t_irq14:TRAP_ENTRY_INTERRUPT(14)            /* IRQ Timer #2                  */
115 
#ifndef __SMP__
116 
t_nmi:  NMI_TRAP                            /* Level 15 (NMI)                */
117 
#else
118 
        TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
119 
#endif
120 
t_racc: TRAP_ENTRY(0x20, do_reg_access)     /* General Register Access Error */
121 
t_iacce:BAD_TRAP(0x21)                      /* Instr Access Error            */
122 
t_bad22:BAD_TRAP(0x22) BAD_TRAP(0x23)
123 
t_cpdis:TRAP_ENTRY(0x24, do_cp_disabled)    /* Co-Processor Disabled         */
124 
t_uflsh:TRAP_ENTRY(0x25, do_bad_flush)      /* Unimplemented FLUSH inst.     */
125 
t_bad26:BAD_TRAP(0x26) BAD_TRAP(0x27)
126 
t_cpexc:TRAP_ENTRY(0x28, do_cp_exception)   /* Co-Processor Exception        */
127 
t_dacce:SPARC_DFAULT                        /* Data Access Error             */
128 
t_hwdz: TRAP_ENTRY(0x2a, do_hw_divzero)     /* Division by zero, you lose... */
129 
t_dserr:BAD_TRAP(0x2b)                      /* Data Store Error              */
130 
t_daccm:BAD_TRAP(0x2c)                      /* Data Access MMU-Miss          */
131 
t_bad2d:BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
132 
t_bad32:BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
133 
t_bad37:BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
134 
t_iaccm:BAD_TRAP(0x3c)                      /* Instr Access MMU-Miss         */
135 
t_bad3d:BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) BAD_TRAP(0x41)
136 
t_bad42:BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) BAD_TRAP(0x46)
137 
t_bad47:BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) BAD_TRAP(0x4b)
138 
t_bad4c:BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) BAD_TRAP(0x50)
139 
t_bad51:BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
140 
t_bad56:BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
141 
t_bad5b:BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
142 
t_bad60:BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
143 
t_bad65:BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
144 
t_bad6a:BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
145 
t_bad6f:BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
146 
t_bad74:BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
147 
t_bad79:BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
148 
t_bad7e:BAD_TRAP(0x7e) BAD_TRAP(0x7f)
149 
t_sunos:SUNOS_SYSCALL_TRAP                  /* SunOS System Call             */
150 
t_sbkpt:BAD_TRAP(0x81)                      /* Software Breakpoint/KGDB      */
151 
t_divz: BAD_TRAP(0x82)                      /* Divide by zero trap           */
152 
t_flwin:TRAP_ENTRY(0x83, do_flush_windows)  /* Flush Windows Trap            */
153 
t_clwin:BAD_TRAP(0x84)                      /* Clean Windows Trap            */
154 
t_rchk: BAD_TRAP(0x85)                      /* Range Check                   */
155 
t_funal:BAD_TRAP(0x86)                      /* Fix Unaligned Access Trap     */
156 
t_iovf: BAD_TRAP(0x87)                      /* Integer Overflow Trap         */
157 
t_slowl:SOLARIS_SYSCALL_TRAP                /* Slowaris System Call          */
158 
t_netbs:NETBSD_SYSCALL_TRAP                 /* Net-B.S. System Call          */
159 
t_bad8a:BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) BAD_TRAP(0x8d) BAD_TRAP(0x8e)
160 
t_bad8f:BAD_TRAP(0x8f)
161 
t_linux:LINUX_SYSCALL_TRAP                  /* Linux System Call             */
162 
t_bad91:BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) BAD_TRAP(0x95)
163 
t_bad96:BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) BAD_TRAP(0x9a)
164 
t_bad9b:BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) BAD_TRAP(0x9f)
165 
t_getcc:GETCC_TRAP                          /* Get Condition Codes           */
166 
t_setcc:SETCC_TRAP                          /* Set Condition Codes           */
167 
t_bada2:BAD_TRAP(0xa2) BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
168 
t_bada7:BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
169 
t_badac:BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
170 
t_badb1:BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
171 
t_badb6:BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
172 
t_badbb:BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
173 
t_badc0:BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
174 
t_badc5:BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
175 
t_badca:BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
176 
t_badcf:BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
177 
t_badd4:BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
178 
t_badd9:BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
179 
t_badde:BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
180 
t_bade3:BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
181 
t_bade8:BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
182 
t_baded:BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
183 
t_badf2:BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
184 
t_badf7:BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
185 
t_badfc:BAD_TRAP(0xfc) BAD_TRAP(0xfd)
186 
dbtrap: BAD_TRAP(0xfe)                      /* Debugger/PROM breakpoint #1   */
187 
dbtrap2:BAD_TRAP(0xff)                      /* Debugger/PROM breakpoint #2   */
188 
 
189 
        .globl  C_LABEL(end_traptable)
190 
C_LABEL(end_traptable):
191 
 
192 
#ifdef __SMP__
193 
        /* Trap tables for the other cpus. */
194 
        .globl  C_LABEL(trapbase_cpu1), C_LABEL(trapbase_cpu2), C_LABEL(trapbase_cpu3)
195 
C_LABEL(trapbase_cpu1):
196 
        BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
197 
        TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
198 
        WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
199 
        TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
200 
        TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
201 
        BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
202 
        TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
203 
        TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
204 
        TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
205 
        TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
206 
        TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
207 
        TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
208 
        TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
209 
        TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
210 
        TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
211 
        BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) TRAP_ENTRY(0x25, do_bad_flush)
212 
        BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
213 
        SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
214 
        BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
215 
        BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
216 
        BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
217 
        BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
218 
        BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
219 
        BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
220 
        BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
221 
        BAD_TRAP(0x50)
222 
        BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
223 
        BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
224 
        BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
225 
        BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
226 
        BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
227 
        BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
228 
        BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
229 
        BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
230 
        BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
231 
        BAD_TRAP(0x7e) BAD_TRAP(0x7f)
232 
        SUNOS_SYSCALL_TRAP BAD_TRAP(0x81) BAD_TRAP(0x82)
233 
        TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
234 
        BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP
235 
        NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
236 
        BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
237 
        LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
238 
        BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
239 
        BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
240 
        BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP
241 
        BAD_TRAP(0xa2) BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
242 
        BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
243 
        BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
244 
        BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
245 
        BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
246 
        BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
247 
        BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
248 
        BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
249 
        BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
250 
        BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
251 
        BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
252 
        BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
253 
        BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
254 
        BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
255 
        BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
256 
        BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
257 
        BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
258 
        BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
259 
        BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
260 
 
261 
C_LABEL(trapbase_cpu2):
262 
        BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
263 
        TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
264 
        WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
265 
        TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
266 
        TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
267 
        BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
268 
        TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
269 
        TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
270 
        TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
271 
        TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
272 
        TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
273 
        TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
274 
        TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
275 
        TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
276 
        TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
277 
        BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) TRAP_ENTRY(0x25, do_bad_flush)
278 
        BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
279 
        SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
280 
        BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
281 
        BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
282 
        BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
283 
        BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
284 
        BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
285 
        BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
286 
        BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
287 
        BAD_TRAP(0x50)
288 
        BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
289 
        BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
290 
        BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
291 
        BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
292 
        BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
293 
        BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
294 
        BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
295 
        BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
296 
        BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
297 
        BAD_TRAP(0x7e) BAD_TRAP(0x7f)
298 
        SUNOS_SYSCALL_TRAP BAD_TRAP(0x81) BAD_TRAP(0x82)
299 
        TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
300 
        BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP
301 
        NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
302 
        BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
303 
        LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
304 
        BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
305 
        BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
306 
        BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP
307 
        BAD_TRAP(0xa2) BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
308 
        BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
309 
        BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
310 
        BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
311 
        BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
312 
        BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
313 
        BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
314 
        BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
315 
        BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
316 
        BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
317 
        BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
318 
        BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
319 
        BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
320 
        BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
321 
        BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
322 
        BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
323 
        BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
324 
        BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
325 
        BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
326 
 
327 
C_LABEL(trapbase_cpu3):
328 
        BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
329 
        TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
330 
        WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
331 
        TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
332 
        TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
333 
        BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
334 
        TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
335 
        TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
336 
        TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
337 
        TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
338 
        TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
339 
        TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
340 
        TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
341 
        TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
342 
        TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
343 
        BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) TRAP_ENTRY(0x25, do_bad_flush)
344 
        BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
345 
        SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
346 
        BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
347 
        BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
348 
        BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
349 
        BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
350 
        BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
351 
        BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
352 
        BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
353 
        BAD_TRAP(0x50)
354 
        BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
355 
        BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
356 
        BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
357 
        BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
358 
        BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
359 
        BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
360 
        BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
361 
        BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
362 
        BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
363 
        BAD_TRAP(0x7e) BAD_TRAP(0x7f)
364 
        SUNOS_SYSCALL_TRAP BAD_TRAP(0x81) BAD_TRAP(0x82)
365 
        TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
366 
        BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP
367 
        NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
368 
        BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
369 
        LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
370 
        BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
371 
        BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
372 
        BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP
373 
        BAD_TRAP(0xa2) BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
374 
        BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
375 
        BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
376 
        BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
377 
        BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
378 
        BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
379 
        BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
380 
        BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
381 
        BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
382 
        BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
383 
        BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
384 
        BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
385 
        BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
386 
        BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
387 
        BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
388 
        BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
389 
        BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
390 
        BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
391 
        BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
392 
 
393 
        .globl  C_LABEL(cpu0_stack), C_LABEL(cpu1_stack), C_LABEL(cpu2_stack)
394 
        .globl  C_LABEL(cpu3_stack)
395 
C_LABEL(cpu0_stack):                    .skip 0x2000
396 
C_LABEL(cpu1_stack):                    .skip 0x2000
397 
C_LABEL(cpu2_stack):                    .skip 0x2000
398 
C_LABEL(cpu3_stack):                    .skip 0x2000
399 
#endif
400 
        .skip 4096
401 
 
402 
/* This was the only reasonable way I could think of to properly align
403 
 * these page-table data structures.
404 
 */
405 
        .globl C_LABEL(bootup_user_stack)
406 
        .globl C_LABEL(bootup_kernel_stack)
407 
        .globl C_LABEL(pg0)
408 
        .globl C_LABEL(empty_bad_page)
409 
        .globl C_LABEL(empty_bad_page_table)
410 
        .globl C_LABEL(empty_zero_page)
411 
        .globl C_LABEL(swapper_pg_dir)
412 
C_LABEL(bootup_user_stack):             .skip 0x2000
413 
C_LABEL(bootup_kernel_stack):           .skip 0x2000
414 
C_LABEL(swapper_pg_dir):                .skip 0x1000
415 
C_LABEL(pg0):                           .skip 0x1000
416 
C_LABEL(empty_bad_page):                .skip 0x1000
417 
C_LABEL(empty_bad_page_table):          .skip 0x1000
418 
C_LABEL(empty_zero_page):               .skip 0x1000
419 
 
420 
 
421 
/* Cool, here we go. Pick up the romvec pointer in %o0 and stash it in
422 
 * %g7 and at prom_vector_p. And also quickly check whether we are on
423 
 * a v0, v2, or v3 prom.
424 
 */
425 
gokernel:
426 
                /* Ok, it's nice to know, as early as possible, if we
427 
                 * are already mapped where we expect to be in virtual
428 
                 * memory.  The Solaris /boot elf format bootloader
429 
                 * will peek into our elf header and load us where
430 
                 * we want to be, otherwise we have to re-map.
431 
                 *
432 
                 * Some boot loaders don't place the jmp'rs address
433 
                 * in %o7, so we do a pc-relative call to a local
434 
                 * label, then see what %o7 has.
435 
                 */
436 
 
437 
                mov     %o7, %g4                ! Save %o7
438 
 
439 
                /* Jump to it, and pray... */
440 
current_pc:
441 
                call    1f
442 
                 nop
443 
 
444 
1:
445 
                mov     %o7, %g3
446 
 
447 
got_pc:
448 
                mov     %g4, %o7                /* Previous %o7. */
449 
 
450 
                mov     %o0, %l0                ! stash away romvec
451 
                mov     %o0, %g7                ! put it here too
452 
                mov     %o1, %l1                ! stash away debug_vec too
453 
 
454 
                /* Ok, let's check out our run time program counter. */
455 
                set     current_pc, %g5
456 
                cmp     %g3, %g5
457 
                be      already_mapped
458 
                 nop
459 
 
460 
                /* %l6 will hold the offset we have to subtract
461 
                 * from absolute symbols in order to access areas
462 
                 * in our own image.  If already mapped this is
463 
                 * just plain zero, else it is PAGE_OFFSET which is
464 
                 * also KERNBASE.
465 
                 */
466 
                set     PAGE_OFFSET, %l6
467 
                b       copy_prom_lvl14
468 
                 nop
469 
 
470 
already_mapped:
471 
                mov     0, %l6
472 
 
473 
                /* Copy over the Prom's level 14 clock handler. */
474 
copy_prom_lvl14:
475 
#if 1
476 
                /* DJHR
477 
                 * preserve our linked/calculated instructions
478 
                 */
479 
                set     C_LABEL(lvl14_save), %g1
480 
                set     t_irq14, %g3
481 
                sub     %g1, %l6, %g1           ! translate to physical
482 
                sub     %g3, %l6, %g3           ! translate to physical
483 
                ldd     [%g3], %g4
484 
                std     %g4, [%g1]
485 
                ldd     [%g3+8], %g4
486 
                std     %g4, [%g1+8]
487 
#endif
488 
                rd      %tbr, %g1
489 
                andn    %g1, 0xfff, %g1         ! proms trap table base
490 
                or      %g0, (0x1e<<4), %g2     ! offset to lvl14 intr
491 
                or      %g1, %g2, %g2
492 
                set     t_irq14, %g3
493 
                sub     %g3, %l6, %g3
494 
                ldd     [%g2], %g4
495 
                std     %g4, [%g3]
496 
                ldd     [%g2 + 0x8], %g4
497 
                std     %g4, [%g3 + 0x8]        ! Copy proms handler
498 
 
499 
/* Must determine whether we are on a sun4c MMU, SRMMU, or SUN4/400 MUTANT
500 
 * MMU so we can remap ourselves properly.  DON'T TOUCH %l0 thru %l5 in these
501 
 * remapping routines, we need their values afterwards!
502 
 */
503 
                /* Now check whether we are already mapped, if we
504 
                 * are we can skip all this garbage coming up.
505 
                 */
506 
copy_prom_done:
507 
                cmp     %l6, 0
508 
                be      go_to_highmem           ! this will be a nop then
509 
                 nop
510 
 
511 
                set     LOAD_ADDR, %g6
512 
                cmp     %g7, %g6
513 
                bne     remap_not_a_sun4        ! This is not a Sun4
514 
                 nop
515 
 
516 
                or      %g0, 0x1, %g1
517 
                lduba   [%g1] ASI_CONTROL, %g1  ! Only safe to try on Sun4.
518 
                subcc   %g1, 0x24, %g0          ! Is this a mutant Sun4/400???
519 
                be      sun4_mutant_remap       ! Ugh, it is...
520 
                 nop
521 
 
522 
remap_not_a_sun4:
523 
                lda     [%g0] ASI_M_MMUREGS, %g1 ! same as ASI_PTE on sun4c
524 
                and     %g1, 0x1, %g1           ! Test SRMMU Enable bit ;-)
525 
                cmp     %g1, 0x0
526 
                be      sun4c_remap             ! A sun4c MMU or normal Sun4
527 
                 nop
528 
srmmu_remap:
529 
                /* First, check for a viking (TI) module. */
530 
                set     0x40000000, %g2
531 
                rd      %psr, %g3
532 
                and     %g2, %g3, %g3
533 
                subcc   %g3, 0x0, %g0
534 
                bz      srmmu_nviking
535 
                 nop
536 
 
537 
                /* Figure out what kind of viking we are on.
538 
                 * We need to know if we have to play with the
539 
                 * AC bit and disable traps or not.
540 
                 */
541 
 
542 
                /* I've only seen MicroSparc's on SparcClassics with this
543 
                 * bit set.
544 
                 */
545 
                set     0x800, %g2
546 
                lda     [%g0] ASI_M_MMUREGS, %g3        ! peek in the control reg
547 
                and     %g2, %g3, %g3
548 
                subcc   %g3, 0x0, %g0
549 
                bnz     srmmu_nviking                   ! is in mbus mode
550 
                 nop
551 
 
552 
                rd      %psr, %g3                       ! DO NOT TOUCH %g3
553 
                andn    %g3, PSR_ET, %g2
554 
                wr      %g2, 0x0, %psr
555 
                WRITE_PAUSE
556 
 
557 
                /* Get context table pointer, then convert to
558 
                 * a physical address, which is 36 bits.
559 
                 */
560 
                set     AC_M_CTPR, %g4
561 
                lda     [%g4] ASI_M_MMUREGS, %g4
562 
                sll     %g4, 0x4, %g4                   ! We use this below
563 
                                                        ! DO NOT TOUCH %g4
564 
 
565 
                /* Set the AC bit in the Viking's MMU control reg. */
566 
                lda     [%g0] ASI_M_MMUREGS, %g5        ! DO NOT TOUCH %g5
567 
                set     0x8000, %g6                     ! AC bit mask
568 
                or      %g5, %g6, %g6                   ! Or it in...
569 
                sta     %g6, [%g0] ASI_M_MMUREGS        ! Close your eyes...
570 
 
571 
                /* Grrr, why does it seem like every other load/store
572 
                 * on the sun4m is in some ASI space...
573 
                 * Fine with me, let's get the pointer to the level 1
574 
                 * page table directory and fetch its entry.
575 
                 */
576 
                lda     [%g4] ASI_M_BYPASS, %o1         ! This is a level 1 ptr
577 
                srl     %o1, 0x4, %o1                   ! Clear low 4 bits
578 
                sll     %o1, 0x8, %o1                   ! Make physical
579 
 
580 
                /* Ok, pull in the PTD. */
581 
                lda     [%o1] ASI_M_BYPASS, %o2         ! This is the 0x0 16MB pgd
582 
 
583 
                /* Calculate to KERNBASE entry.
584 
                 *
585 
                 * XXX Should not use empirical constant, but Gas gets an  XXX
586 
                 * XXX upset stomach with the bitshift I would have to use XXX
587 
                 */
588 
                add     %o1, 0x3c0, %o3
589 
 
590 
                /* Poke the entry into the calculated address. */
591 
                sta     %o2, [%o3] ASI_M_BYPASS
592 
 
593 
                /* I don't get it Sun, if you engineered all these
594 
                 * boot loaders and the PROM (thank you for the debugging
595 
                 * features btw) why did you not have them load kernel
596 
                 * images up in high address space, since this is necessary
597 
                 * for ABI compliance anyways?  Does this low-mapping provide
598 
                 * enhanced interoperability?
599 
                 *
600 
                 * "The PROM is the computer."
601 
                 */
602 
 
603 
                /* Ok, restore the MMU control register we saved in %g5 */
604 
                sta     %g5, [%g0] ASI_M_MMUREGS        ! POW... ouch
605 
 
606 
                /* Turn traps back on.  We saved it in %g3 earlier. */
607 
                wr      %g3, 0x0, %psr                  ! tick tock, tick tock
608 
 
609 
                /* Now we burn precious CPU cycles due to bad engineering. */
610 
                WRITE_PAUSE
611 
 
612 
                /* Wow, all that just to move a 32-bit value from one
613 
                 * place to another...  Jump to high memory.
614 
                 */
615 
                b       go_to_highmem
616 
                 nop
617 
 
618 
                /* This works on viking's in Mbus mode and all
619 
                 * other MBUS modules.  It is virtually the same as
620 
                 * the above madness sans turning traps off and flipping
621 
                 * the AC bit.
622 
                 */
623 
srmmu_nviking:
624 
                set     AC_M_CTPR, %g1
625 
                lda     [%g1] ASI_M_MMUREGS, %g1        ! get ctx table ptr
626 
                sll     %g1, 0x4, %g1                   ! make physical addr
627 
                lda     [%g1] ASI_M_BYPASS, %g1         ! ptr to level 1 pg_table
628 
                srl     %g1, 0x4, %g1
629 
                sll     %g1, 0x8, %g1                   ! make phys addr for l1 tbl
630 
 
631 
                lda     [%g1] ASI_M_BYPASS, %g2         ! get level1 entry for 0x0
632 
                add     %g1, 0x3c0, %g3                 ! XXX AWAY WITH EMPIRICALS
633 
                sta     %g2, [%g3] ASI_M_BYPASS         ! place at KERNBASE entry
634 
                b       go_to_highmem
635 
                 nop                                    ! wheee....
636 
 
637 
                /* This remaps the kernel on Sun4/4xx machines
638 
                 * that have the Sun Mutant Three Level MMU.
639 
                 * It's like a platypus, Sun didn't have the
640 
                 * SRMMU in conception so they kludged the three
641 
                 * level logic in the regular Sun4 MMU probably.
642 
                 *
643 
                 * Basically, you take each entry in the top level
644 
                 * directory that maps the low 3MB starting at
645 
                 * address zero and put the mapping in the KERNBASE
646 
                 * slots.  These top level pgd's are called regmaps.
647 
                 */
648 
sun4_mutant_remap:
649 
                or      %g0, %g0, %g3           ! source base
650 
                sethi   %hi(KERNBASE), %g4      ! destination base
651 
                or      %g4, %lo(KERNBASE), %g4
652 
                sethi   %hi(0x300000), %g5
653 
                or      %g5, %lo(0x300000), %g5 ! upper bound 3MB
654 
                or      %g0, 0x1, %l6
655 
                sll     %l6, 24, %l6            ! Regmap mapping size
656 
                add     %g3, 0x2, %g3           ! Base magic
657 
                add     %g4, 0x2, %g4           ! Base magic
658 
 
659 
                /* Main remapping loop on Sun4-Mutant-MMU.
660 
                 * "I am not an animal..." -Famous Mutant Person
661 
                 */
662 
sun4_mutant_loop:
663 
                lduha   [%g3] ASI_REGMAP, %g2   ! Get lower entry
664 
                stha    %g2, [%g4] ASI_REGMAP   ! Store in high entry
665 
                add     %g4, %l6, %g4           ! Move up high memory ptr
666 
                subcc   %g3, %g5, %g0           ! Reached our limit?
667 
                blu     sun4_mutant_loop        ! Nope, loop again
668 
                 add    %g3, %l6, %g3           ! delay, Move up low ptr
669 
                b       go_to_highmem           ! Jump to high memory.
670 
                 nop
671 
 
672 
/* The following works for normal (ie. non Sun4/400) Sun4 MMU's */
673 
sun4c_remap:
674 
                mov     0, %g3                  ! source base
675 
                set     KERNBASE, %g4           ! destination base
676 
                set     0x300000, %g5           ! upper bound 3MB
677 
                mov     1, %l6
678 
                sll     %l6, 18, %l6            ! sun4c mmu segmap size
679 
sun4c_remap_loop:
680 
                lda     [%g3] ASI_SEGMAP, %g6   ! load phys_seg
681 
                sta     %g6, [%g4] ASI_SEGMAP   ! store new virt mapping
682 
                add     %g3, %l6, %g3           ! Increment source ptr
683 
                subcc   %g3, %g5, %g0           ! Reached limit?
684 
                bl      sun4c_remap_loop        ! Nope, loop again
685 
                 add    %g4, %l6, %g4           ! delay, Increment dest ptr
686 
 
687 
/* Now do a non-relative jump so that PC is in high-memory */
688 
go_to_highmem:
689 
                set     execute_in_high_mem, %g1
690 
                jmpl    %g1, %g0
691 
                 nop
692 
 
693 
/* Acquire boot time privileged register values, this will help debugging.
694 
 * I figure out and store nwindows and nwindowsm1 later on.
695 
 */
696 
execute_in_high_mem:
697 
#if CONFIG_AP1000
698 
                /* we don't have a prom :-( */
699 
                b sun4m_init
700 
                nop
701 
#endif
702 
                mov     %l0, %o0                ! put back romvec
703 
                mov     %l1, %o1                ! and debug_vec
704 
 
705 
                sethi   %hi( C_LABEL(prom_vector_p) ), %g1
706 
                st      %o0, [%g1 + %lo( C_LABEL(prom_vector_p) )]
707 
 
708 
                sethi   %hi( C_LABEL(linux_dbvec) ), %g1
709 
                st      %o1, [%g1 + %lo( C_LABEL(linux_dbvec) )]
710 
 
711 
                ld      [%o0 + 0x4], %o3
712 
                and     %o3, 0x3, %o5                   ! get the version
713 
 
714 
                cmp     %o3, 0x2                        ! a v2 prom?
715 
                be      found_version
716 
                 nop
717 
 
718 
                /* paul@sfe.com.au */
719 
                cmp     %o3, 0x3                        ! a v3 prom?
720 
                be      found_version
721 
                 nop
722 
 
723 
/* Old sun4's pass our load address into %o0 instead of the prom
724 
 * pointer. On sun4's you have to hard code the romvec pointer into
725 
 * your code. Sun probably still does that because they don't even
726 
 * trust their own "OpenBoot" specifications.
727 
 */
728 
 
729 
                set     LOAD_ADDR, %g6
730 
                cmp     %o0, %g6                ! an old sun4?
731 
                be      no_sun4_here
732 
                 nop
733 
 
734 
found_version:
735 
 
736 
/* Get the machine type via the mysterious romvec node operations. */
737 
 
738 
                or      %g0, %g7, %l1
739 
                add     %l1, 0x1c, %l1
740 
                ld      [%l1], %l0
741 
                ld      [%l0], %l0
742 
                call    %l0
743 
                 or     %g0, %g0, %o0           ! next_node(0) = first_node
744 
                or      %o0, %g0, %g6
745 
 
746 
                sethi   %hi( C_LABEL(cputypvar) ), %o1  ! First node has cpu-arch
747 
                or      %o1, %lo( C_LABEL(cputypvar) ), %o1
748 
                sethi   %hi( C_LABEL(cputypval) ), %o2  ! information, the string
749 
                or      %o2, %lo( C_LABEL(cputypval) ), %o2
750 
                ld      [%l1], %l0              ! 'compatibility' tells
751 
                ld      [%l0 + 0xc], %l0        ! that we want 'sun4x' where
752 
                call    %l0                     ! x is one of '', 'c', 'm',
753 
                 nop                            ! 'd' or 'e'. %o2 holds pointer
754 
                                                ! to a buf where above string
755 
                                                ! will get stored by the prom.
756 
 
757 
                subcc   %o0, %g0, %g0
758 
                bpos    got_prop                ! Got the property
759 
                 nop
760 
 
761 
                or      %g6, %g0, %o0
762 
                sethi   %hi( C_LABEL(cputypvar_sun4m) ), %o1
763 
                or      %o1, %lo( C_LABEL(cputypvar_sun4m) ), %o1
764 
                sethi   %hi( C_LABEL(cputypval) ), %o2
765 
                or      %o2, %lo( C_LABEL(cputypval) ), %o2
766 
                ld      [%l1], %l0
767 
                ld      [%l0 + 0xc], %l0
768 
                call    %l0
769 
                 nop
770 
 
771 
got_prop:
772 
                set     C_LABEL(cputypval), %o2
773 
                ldub    [%o2 + 0x4], %l1
774 
 
775 
                cmp     %l1, 'c'                ! We already know we are not
776 
                be      1f                      ! on a plain sun4 because of
777 
                 nop                            ! the check for 0x4000 in %o0
778 
 
779 
                cmp     %l1, 'm'                ! at start
780 
                be      1f
781 
                 nop
782 
 
783 
                cmp     %l1, 'd'
784 
                be      no_sun4d_here           ! God bless the person who
785 
                 nop                            ! tried to run this on sun4d.
786 
 
787 
                cmp     %l1, 'e'
788 
                be      no_sun4e_here           ! Could be a sun4e.
789 
                 nop
790 
 
791 
                b       no_sun4u_here           ! AIEEE, a V9 sun4u...
792 
                 nop
793 
 
794 
 
795 
1:
796 
                set     C_LABEL(cputypval), %l1
797 
                ldub    [%l1 + 0x4], %l1
798 
                cmp     %l1, 'm'                ! Test for sun4d, sun4e ?
799 
                be      sun4m_init
800 
                 nop
801 
 
802 
                /* Jump into mmu context zero. */
803 
                set     AC_CONTEXT, %g1
804 
                stba    %g0, [%g1] ASI_CONTROL
805 
 
806 
                b       sun4c_continue_boot
807 
                 nop
808 
 
809 
sun4m_init:
810 
 
811 
/* Ok, the PROM could have done funny things and apple cider could still
812 
 * be sitting in the fault status/address registers.  Read them all to
813 
 * clear them so we don't get magic faults later on.
814 
 */
815 
/* This sucks, apparently this makes Vikings call prom panic, will fix later */
816 
 
817 
                rd      %psr, %o1
818 
                srl     %o1, 28, %o1            ! Get a type of the CPU
819 
 
820 
                subcc   %o1, 4, %g0             ! TI: Viking or MicroSPARC
821 
                be      sun4c_continue_boot
822 
                 nop
823 
 
824 
                set     AC_M_SFSR, %o0
825 
                lda     [%o0] ASI_M_MMUREGS, %g0
826 
                set     AC_M_SFAR, %o0
827 
                lda     [%o0] ASI_M_MMUREGS, %g0
828 
 
829 
                /* Fujitsu MicroSPARC-II has no asynchronous flavors of FARs */
830 
                subcc   %o1, 0, %g0
831 
                be      sun4c_continue_boot
832 
                 nop
833 
 
834 
                set     AC_M_AFSR, %o0
835 
                lda     [%o0] ASI_M_MMUREGS, %g0
836 
                set     AC_M_AFAR, %o0
837 
                lda     [%o0] ASI_M_MMUREGS, %g0
838 
                 nop
839 
 
840 
 
841 
sun4c_continue_boot:
842 
 
843 
 
844 
/* Aieee, now set PC and nPC, enable traps, give ourselves a stack and it's
845 
 * show-time!
846 
 */
847 
 
848 
                sethi   %hi( C_LABEL(cputyp) ), %o0
849 
                st      %g4, [%o0 + %lo( C_LABEL(cputyp) )]
850 
 
851 
                /* Turn on Supervisor, EnableFloating, and all the PIL bits.
852 
                 * Also puts us in register window zero with traps off.
853 
                 */
854 
                set     (PSR_PS | PSR_S | PSR_PIL | PSR_EF), %g2
855 
                wr      %g2, 0x0, %psr
856 
                WRITE_PAUSE
857 
 
858 
                /* I want a kernel stack NOW! */
859 
                set     C_LABEL(bootup_user_stack), %g1
860 
                add     %g1, (PAGE_SIZE - REGWIN_SZ), %sp
861 
                mov     0, %fp                  /* And for good luck */
862 
 
863 
                /* Zero out our BSS section. */
864 
                set     C_LABEL(edata) , %o0    ! First address of BSS
865 
                set     C_LABEL(end) , %o1      ! Last address of BSS
866 
                add     %o0, 0x1, %o0
867 
1:
868 
                stb     %g0, [%o0]
869 
                subcc   %o0, %o1, %g0
870 
                bl      1b
871 
                 add    %o0, 0x1, %o0
872 
 
873 
                /* Initialize the umask value for init_task just in case.
874 
                 * But first make current_set[0] point to something useful.
875 
                 */
876 
                set     C_LABEL(init_task), %g4
877 
                set     C_LABEL(current_set), %g2
878 
                st      %g4, [%g2]
879 
 
880 
                set     C_LABEL(bootup_kernel_stack), %g3
881 
                st      %g3, [%g4 + TASK_KSTACK_PG]
882 
                st      %g0, [%g4 + THREAD_UMASK]
883 
 
884 
/* Compute NWINDOWS and stash it away. Now uses %wim trick explained
885 
 * in the V8 manual. Ok, this method seems to work, Sparc is cool...
886 
 * No, it doesn't work, have to play the save/readCWP/restore trick.
887 
 */
888 
 
889 
                wr      %g0, 0x0, %wim                  ! so we do not get a trap
890 
                WRITE_PAUSE
891 
 
892 
                save
893 
 
894 
                rd      %psr, %g3
895 
 
896 
                restore
897 
 
898 
                and     %g3, 0x1f, %g3
899 
                add     %g3, 0x1, %g3
900 
 
901 
                mov     2, %g1
902 
                wr      %g1, 0x0, %wim                  ! make window 1 invalid
903 
                WRITE_PAUSE
904 
 
905 
                cmp     %g3, 0x7
906 
                bne     2f
907 
                 nop
908 
 
909 
                /* Adjust our window handling routines to
910 
                 * do things correctly on 7 window Sparcs.
911 
                 */
912 
 
913 
#define         PATCH_INSN(src, dest) \
914 
                set     src, %g5; \
915 
                set     dest, %g6; \
916 
                ld      [%g5], %g4; \
917 
                st      %g4, [%g6];
918 
 
919 
                /* Patch for window spills... */
920 
                PATCH_INSN(spnwin_patch1_7win, spnwin_patch1)
921 
                PATCH_INSN(spnwin_patch2_7win, spnwin_patch2)
922 
                PATCH_INSN(spnwin_patch3_7win, spnwin_patch3)
923 
 
924 
                /* Patch for window fills... */
925 
                PATCH_INSN(fnwin_patch1_7win, fnwin_patch1)
926 
                PATCH_INSN(fnwin_patch2_7win, fnwin_patch2)
927 
 
928 
                /* Patch for trap entry setup... */
929 
                PATCH_INSN(tsetup_7win_patch1, tsetup_patch1)
930 
                PATCH_INSN(tsetup_7win_patch2, tsetup_patch2)
931 
                PATCH_INSN(tsetup_7win_patch3, tsetup_patch3)
932 
                PATCH_INSN(tsetup_7win_patch4, tsetup_patch4)
933 
                PATCH_INSN(tsetup_7win_patch5, tsetup_patch5)
934 
                PATCH_INSN(tsetup_7win_patch6, tsetup_patch6)
935 
 
936 
                /* Patch for returning from traps... */
937 
                PATCH_INSN(rtrap_7win_patch1, rtrap_patch1)
938 
                PATCH_INSN(rtrap_7win_patch2, rtrap_patch2)
939 
                PATCH_INSN(rtrap_7win_patch3, rtrap_patch3)
940 
                PATCH_INSN(rtrap_7win_patch4, rtrap_patch4)
941 
                PATCH_INSN(rtrap_7win_patch5, rtrap_patch5)
942 
 
943 
#ifdef __SMP__
944 
 
945 
                /* Patch for returning from an ipi... */
946 
                PATCH_INSN(rirq_7win_patch1, rirq_patch1)
947 
                PATCH_INSN(rirq_7win_patch2, rirq_patch2)
948 
                PATCH_INSN(rirq_7win_patch3, rirq_patch3)
949 
                PATCH_INSN(rirq_7win_patch4, rirq_patch4)
950 
                PATCH_INSN(rirq_7win_patch5, rirq_patch5)
951 
 
952 
#endif
953 
 
954 
2:
955 
                sethi   %hi( C_LABEL(nwindows) ), %g4
956 
                st      %g3, [%g4 + %lo( C_LABEL(nwindows) )]   ! store final value
957 
                sub     %g3, 0x1, %g3
958 
                sethi   %hi( C_LABEL(nwindowsm1) ), %g4
959 
                st      %g3, [%g4 + %lo( C_LABEL(nwindowsm1) )]
960 
 
961 
                /* Here we go, start using Linux's trap table... */
962 
                set     C_LABEL(trapbase), %g3
963 
                wr      %g3, 0x0, %tbr
964 
                WRITE_PAUSE
965 
 
966 
                /* Finally, turn on traps so that we can call c-code. */
967 
                rd      %psr, %g3
968 
                wr      %g3, 0x0, %psr
969 
                WRITE_PAUSE
970 
 
971 
                wr      %g3, PSR_ET, %psr
972 
                WRITE_PAUSE
973 
 
974 
                /* First we call prom_init() to set up PROMLIB, then
975 
                 * off to start_kernel().
976 
                 */
977 
 
978 
                sethi   %hi( C_LABEL(prom_vector_p) ), %g5
979 
                ld      [%g5 + %lo( C_LABEL(prom_vector_p) )], %o0
980 
                call    C_LABEL(prom_init)
981 
                 nop
982 
 
983 
                call    C_LABEL(start_kernel)
984 
                 nop
985 
 
986 
                /* We should not get here. */
987 
                call    halt_me
988 
                 nop
989 
 
990 
/* There, happy now Adrian? */
991 
 
992 
                /* XXX Fix this... XXX */
993 
no_sun4_here:
994 
                sethi   %hi(SUN4_PROM_VECTOR+SUN4_PRINTF), %o1
995 
                ld      [%o1 + %lo(SUN4_PROM_VECTOR+SUN4_PRINTF)], %o1
996 
                set     sun4_notsup, %o0
997 
                call    %o1
998 
                 nop
999 
1:
1000 
                ba      1b                      ! Cannot exit into KMON
1001 
                 nop
1002 
 
1003 
no_sun4d_here:
1004 
                ld      [%g7 + 0x68], %o1
1005 
                set     sun4d_notsup, %o0
1006 
                call    %o1
1007 
                 nop
1008 
                b       halt_me
1009 
                 nop
1010 
 
1011 
no_sun4e_here:
1012 
                ld      [%g7 + 0x68], %o1
1013 
                set     sun4e_notsup, %o0
1014 
                call    %o1
1015 
                 nop
1016 
                b       halt_me
1017 
                 nop
1018 
 
1019 
no_sun4u_here:
1020 
                ld      [%g7 + 0x68], %o1
1021 
                set     sun4u_notsup, %o0
1022 
                call    %o1
1023 
                 nop
1024 
                b       halt_me
1025 
                 nop
1026 
 
1027 
halt_me:
1028 
                ld      [%g7 + 0x74], %o0
1029 
                call    %o0                     ! Get us out of here...
1030 
                 nop                            ! Apparently Solaris is better.
1031 
 
1032 
        .data
1033 
        .align 4
1034 
 
1035 
/*
1036 
 * Fill up the prom vector, note in particular the kind first element,
1037 
 * no joke. I don't need all of them in here as the entire prom vector
1038 
 * gets initialized in c-code so all routines can use it.
1039 
 */
1040 
 
1041 
        .globl  C_LABEL(prom_vector_p)
1042 
C_LABEL(prom_vector_p):
1043 
                .word 0
1044 
 
1045 
/* We calculate the following at boot time, window fills/spills and trap entry
1046 
 * code uses these to keep track of the register windows.
1047 
 */
1048 
 
1049 
        .align 4
1050 
        .globl  C_LABEL(nwindows)
1051 
        .globl  C_LABEL(nwindowsm1)
1052 
C_LABEL(nwindows):
1053 
        .word   8
1054 
C_LABEL(nwindowsm1):
1055 
        .word   7
1056 
 
1057 
/* Boot time debugger vector value.  We need this later on. */
1058 
 
1059 
        .align 4
1060 
        .globl  C_LABEL(linux_dbvec)
1061 
C_LABEL(linux_dbvec):
1062 
        .word   0
1063 
        .word   0
1064 
 
1065 
        .align 8
1066 
 
1067 
        .globl  C_LABEL(lvl14_save)
1068 
C_LABEL(lvl14_save):
1069 
        .word   0
1070 
        .word   0
1071 
        .word   0
1072 
        .word   0
1073 
        .word   t_irq14
1074 
 

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