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sparc32: drop prom version check in head_32.S
[deliverable/linux.git] / arch / sparc / kernel / head_32.S
CommitLineData
88278ca2 1/*
1da177e4
LT		 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) 1995,1999 Pete Zaitcev (zaitcev@yahoo.com)
6 * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
7 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
8 * Copyright (C) 1997 Michael A. Griffith (grif@acm.org)
9 *
10 * CompactPCI platform by Eric Brower, 1999.
11 */
12
13#include <linux/version.h>
1da177e4
LT		 14#include <linux/init.h>
15
16#include <asm/head.h>
17#include <asm/asi.h>
18#include <asm/contregs.h>
19#include <asm/ptrace.h>
20#include <asm/psr.h>
21#include <asm/page.h>
19fce2b9 22#include <asm/kdebug.h>
1da177e4
LT		 23#include <asm/winmacro.h>
24#include <asm/thread_info.h> /* TI_UWINMASK */
25#include <asm/errno.h>
26#include <asm/pgtsrmmu.h> /* SRMMU_PGDIR_SHIFT */
27
28 .data
29/*
30 * The following are used with the prom_vector node-ops to figure out
31 * the cpu-type
32 */
33
34 .align 4
1da177e4
LT		 35cputyp:
36 .word 1
37
38 .align 4
39 .globl cputypval
40cputypval:
41 .asciz "sun4c"
42 .ascii " "
43
44cputypvalend:
45cputypvallen = cputypvar - cputypval
46
47 .align 4
48/*
49 * Sun people can't spell worth damn. "compatability" indeed.
50 * At least we *know* we can't spell, and use a spell-checker.
51 */
52
53/* Uh, actually Linus it is I who cannot spell. Too much murky
54 * Sparc assembly will do this to ya.
55 */
56cputypvar:
57 .asciz "compatability"
58
59/* Tested on SS-5, SS-10. Probably someone at Sun applied a spell-checker. */
60 .align 4
61cputypvar_sun4m:
62 .asciz "compatible"
63
64 .align 4
65
323206a1
SR		 66sun4c_notsup:
67 .asciz "Sparc-Linux sun4/sun4c support does no longer exist.\n\n"
1da177e4 68 .align 4
1da177e4
LT		 69
70sun4e_notsup:
71 .asciz "Sparc-Linux sun4e support does not exist\n\n"
72 .align 4
73
1da177e4 74 /* The Sparc trap table, bootloader gives us control at _start. */
ce8a7424 75 __HEAD
b2a39b0d 76 .globl _stext, _start, __stext
1da177e4
LT		 77 .globl trapbase
78_start: /* danger danger */
79__stext:
80_stext:
1da177e4
LT		 81trapbase:
82#ifdef CONFIG_SMP
83trapbase_cpu0:
84#endif
85/* We get control passed to us here at t_zero. */
86t_zero: b gokernel; nop; nop; nop;
306f1231 87t_tflt: SRMMU_TFAULT /* Inst. Access Exception */
1da177e4
LT		 88t_bins: TRAP_ENTRY(0x2, bad_instruction) /* Illegal Instruction */
89t_pins: TRAP_ENTRY(0x3, priv_instruction) /* Privileged Instruction */
90t_fpd: TRAP_ENTRY(0x4, fpd_trap_handler) /* Floating Point Disabled */
91t_wovf: WINDOW_SPILL /* Window Overflow */
92t_wunf: WINDOW_FILL /* Window Underflow */
93t_mna: TRAP_ENTRY(0x7, mna_handler) /* Memory Address Not Aligned */
94t_fpe: TRAP_ENTRY(0x8, fpe_trap_handler) /* Floating Point Exception */
306f1231 95t_dflt: SRMMU_DFAULT /* Data Miss Exception */
1da177e4
LT		 96t_tio: TRAP_ENTRY(0xa, do_tag_overflow) /* Tagged Instruction Ovrflw */
97t_wpt: TRAP_ENTRY(0xb, do_watchpoint) /* Watchpoint Detected */
98t_badc: BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
99t_irq1: TRAP_ENTRY_INTERRUPT(1) /* IRQ Software/SBUS Level 1 */
100t_irq2: TRAP_ENTRY_INTERRUPT(2) /* IRQ SBUS Level 2 */
101t_irq3: TRAP_ENTRY_INTERRUPT(3) /* IRQ SCSI/DMA/SBUS Level 3 */
102t_irq4: TRAP_ENTRY_INTERRUPT(4) /* IRQ Software Level 4 */
103t_irq5: TRAP_ENTRY_INTERRUPT(5) /* IRQ SBUS/Ethernet Level 5 */
104t_irq6: TRAP_ENTRY_INTERRUPT(6) /* IRQ Software Level 6 */
105t_irq7: TRAP_ENTRY_INTERRUPT(7) /* IRQ Video/SBUS Level 5 */
106t_irq8: TRAP_ENTRY_INTERRUPT(8) /* IRQ SBUS Level 6 */
107t_irq9: TRAP_ENTRY_INTERRUPT(9) /* IRQ SBUS Level 7 */
108t_irq10:TRAP_ENTRY_INTERRUPT(10) /* IRQ Timer #1 (one we use) */
109t_irq11:TRAP_ENTRY_INTERRUPT(11) /* IRQ Floppy Intr. */
110t_irq12:TRAP_ENTRY_INTERRUPT(12) /* IRQ Zilog serial chip */
111t_irq13:TRAP_ENTRY_INTERRUPT(13) /* IRQ Audio Intr. */
112t_irq14:TRAP_ENTRY_INTERRUPT(14) /* IRQ Timer #2 */
113 .globl t_nmi
96061a91 114t_nmi: TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
2c1cfb2d 115
1da177e4
LT		 116t_racc: TRAP_ENTRY(0x20, do_reg_access) /* General Register Access Error */
117t_iacce:BAD_TRAP(0x21) /* Instr Access Error */
118t_bad22:BAD_TRAP(0x22) BAD_TRAP(0x23)
119t_cpdis:TRAP_ENTRY(0x24, do_cp_disabled) /* Co-Processor Disabled */
120t_uflsh:SKIP_TRAP(0x25, unimp_flush) /* Unimplemented FLUSH inst. */
121t_bad26:BAD_TRAP(0x26) BAD_TRAP(0x27)
122t_cpexc:TRAP_ENTRY(0x28, do_cp_exception) /* Co-Processor Exception */
306f1231 123t_dacce:SRMMU_DFAULT /* Data Access Error */
1da177e4
LT		 124t_hwdz: TRAP_ENTRY(0x2a, do_hw_divzero) /* Division by zero, you lose... */
125t_dserr:BAD_TRAP(0x2b) /* Data Store Error */
126t_daccm:BAD_TRAP(0x2c) /* Data Access MMU-Miss */
127t_bad2d:BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
128t_bad32:BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
129t_bad37:BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
130t_iaccm:BAD_TRAP(0x3c) /* Instr Access MMU-Miss */
131t_bad3d:BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) BAD_TRAP(0x41)
132t_bad42:BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) BAD_TRAP(0x46)
133t_bad47:BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) BAD_TRAP(0x4b)
134t_bad4c:BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) BAD_TRAP(0x50)
135t_bad51:BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
136t_bad56:BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
137t_bad5b:BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
138t_bad60:BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
139t_bad65:BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
140t_bad6a:BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
141t_bad6f:BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
142t_bad74:BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
143t_bad79:BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
144t_bad7e:BAD_TRAP(0x7e) BAD_TRAP(0x7f)
ec98c6b9 145t_bad80:BAD_TRAP(0x80) /* SunOS System Call */
1da177e4
LT		 146t_sbkpt:BREAKPOINT_TRAP /* Software Breakpoint/KGDB */
147t_divz: TRAP_ENTRY(0x82, do_hw_divzero) /* Divide by zero trap */
148t_flwin:TRAP_ENTRY(0x83, do_flush_windows) /* Flush Windows Trap */
149t_clwin:BAD_TRAP(0x84) /* Clean Windows Trap */
150t_rchk: BAD_TRAP(0x85) /* Range Check */
151t_funal:BAD_TRAP(0x86) /* Fix Unaligned Access Trap */
152t_iovf: BAD_TRAP(0x87) /* Integer Overflow Trap */
ec98c6b9
DM		 153t_bad88:BAD_TRAP(0x88) /* Slowaris System Call */
154t_bad89:BAD_TRAP(0x89) /* Net-B.S. System Call */
1da177e4
LT		 155t_bad8a:BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) BAD_TRAP(0x8d) BAD_TRAP(0x8e)
156t_bad8f:BAD_TRAP(0x8f)
157t_linux:LINUX_SYSCALL_TRAP /* Linux System Call */
158t_bad91:BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) BAD_TRAP(0x95)
159t_bad96:BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) BAD_TRAP(0x9a)
160t_bad9b:BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) BAD_TRAP(0x9f)
161t_getcc:GETCC_TRAP /* Get Condition Codes */
162t_setcc:SETCC_TRAP /* Set Condition Codes */
163t_getpsr:GETPSR_TRAP /* Get PSR Register */
164t_bada3:BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
ec98c6b9 165t_bada7:BAD_TRAP(0xa7)
1da177e4
LT		 166t_bada8:BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
167t_badac:BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
168t_badb1:BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
169t_badb6:BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
170t_badbb:BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
171t_badc0:BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
172t_badc5:BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
173t_badca:BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
174t_badcf:BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
175t_badd4:BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
176t_badd9:BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
177t_badde:BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
178t_bade3:BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
179t_bade8:BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
180t_baded:BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
181t_badf2:BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
182t_badf7:BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
e2fdd7fd
DM		 183t_badfc:BAD_TRAP(0xfc)
184t_kgdb: KGDB_TRAP(0xfd)
1da177e4
LT		 185dbtrap: BAD_TRAP(0xfe) /* Debugger/PROM breakpoint #1 */
186dbtrap2:BAD_TRAP(0xff) /* Debugger/PROM breakpoint #2 */
187
188 .globl end_traptable
189end_traptable:
190
191#ifdef CONFIG_SMP
192 /* Trap tables for the other cpus. */
193 .globl trapbase_cpu1, trapbase_cpu2, trapbase_cpu3
194trapbase_cpu1:
195 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
196 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
197 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
198 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
199 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
200 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
201 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
202 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
203 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
204 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
205 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
206 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
207 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
208 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
209 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
210 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush)
211 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
212 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
213 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
214 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
215 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
216 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
217 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
218 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
219 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
220 BAD_TRAP(0x50)
221 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
222 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
223 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
224 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
225 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
226 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
227 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
228 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
229 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
230 BAD_TRAP(0x7e) BAD_TRAP(0x7f)
ec98c6b9 231 BAD_TRAP(0x80)
1da177e4
LT		 232 BREAKPOINT_TRAP
233 TRAP_ENTRY(0x82, do_hw_divzero)
234 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
ec98c6b9
DM		 235 BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88)
236 BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
1da177e4
LT		 237 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
238 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
239 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
240 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
241 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP
242 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
ec98c6b9 243 BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
1da177e4
LT		 244 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
245 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
246 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
247 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
248 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
249 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
250 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
251 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
252 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
253 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
254 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
255 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
256 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
257 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
258 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
259 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
e2fdd7fd 260 BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
1da177e4
LT		 261
262trapbase_cpu2:
263 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
264 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
265 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
266 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
267 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
268 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
269 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
270 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
271 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
272 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
273 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
274 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
275 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
276 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
277 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
278 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush)
279 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
280 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
281 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
282 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
283 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
284 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
285 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
286 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
287 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
288 BAD_TRAP(0x50)
289 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
290 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
291 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
292 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
293 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
294 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
295 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
296 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
297 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
298 BAD_TRAP(0x7e) BAD_TRAP(0x7f)
ec98c6b9 299 BAD_TRAP(0x80)
1da177e4
LT		 300 BREAKPOINT_TRAP
301 TRAP_ENTRY(0x82, do_hw_divzero)
302 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
ec98c6b9
DM		 303 BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88)
304 BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
1da177e4
LT		 305 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
306 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
307 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
308 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
309 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP
310 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
ec98c6b9 311 BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
1da177e4
LT		 312 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
313 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
314 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
315 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
316 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
317 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
318 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
319 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
320 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
321 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
322 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
323 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
324 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
325 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
326 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
327 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
e2fdd7fd 328 BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
1da177e4
LT		 329
330trapbase_cpu3:
331 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
332 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
333 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
334 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
335 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
336 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
337 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
338 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
339 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
340 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
341 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
342 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
343 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
344 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
345 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
346 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush)
347 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
348 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
349 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
350 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
351 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
352 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
353 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
354 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
355 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
356 BAD_TRAP(0x50)
357 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
358 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
359 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
360 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
361 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
362 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
363 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
364 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
365 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
366 BAD_TRAP(0x7e) BAD_TRAP(0x7f)
ec98c6b9 367 BAD_TRAP(0x80)
1da177e4
LT		 368 BREAKPOINT_TRAP
369 TRAP_ENTRY(0x82, do_hw_divzero)
370 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
ec98c6b9
DM		 371 BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88)
372 BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
1da177e4
LT		 373 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
374 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
375 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
376 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
377 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP
378 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
ec98c6b9 379 BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
1da177e4
LT		 380 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
381 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
382 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
383 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
384 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
385 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
386 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
387 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
388 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
389 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
390 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
391 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
392 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
393 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
394 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
395 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
e2fdd7fd 396 BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
1da177e4
LT		 397
398#endif
399 .align PAGE_SIZE
400
401/* This was the only reasonable way I could think of to properly align
402 * these page-table data structures.
403 */
1da177e4
LT		 404 .globl swapper_pg_dir
405swapper_pg_dir: .skip PAGE_SIZE
1b4cb70e 406 .globl empty_zero_page
1da177e4
LT		 407empty_zero_page: .skip PAGE_SIZE
408
409 .global root_flags
410 .global ram_flags
411 .global root_dev
412 .global sparc_ramdisk_image
413 .global sparc_ramdisk_size
414
415/* This stuff has to be in sync with SILO and other potential boot loaders
416 * Fields should be kept upward compatible and whenever any change is made,
417 * HdrS version should be incremented.
418 */
419 .ascii "HdrS"
420 .word LINUX_VERSION_CODE
421 .half 0x0203 /* HdrS version */
422root_flags:
423 .half 1
424root_dev:
425 .half 0
426ram_flags:
427 .half 0
428sparc_ramdisk_image:
429 .word 0
430sparc_ramdisk_size:
431 .word 0
432 .word reboot_command
433 .word 0, 0, 0
434 .word _end
435
436/* Cool, here we go. Pick up the romvec pointer in %o0 and stash it in
437 * %g7 and at prom_vector_p. And also quickly check whether we are on
438 * a v0, v2, or v3 prom.
439 */
440gokernel:
441 /* Ok, it's nice to know, as early as possible, if we
442 * are already mapped where we expect to be in virtual
443 * memory. The Solaris /boot elf format bootloader
444 * will peek into our elf header and load us where
445 * we want to be, otherwise we have to re-map.
446 *
447 * Some boot loaders don't place the jmp'rs address
448 * in %o7, so we do a pc-relative call to a local
449 * label, then see what %o7 has.
450 */
451
452 mov %o7, %g4 ! Save %o7
453
454 /* Jump to it, and pray... */
455current_pc:
456 call 1f
457 nop
458
4591:
460 mov %o7, %g3
461
462 tst %o0
463 be no_sun4u_here
464 mov %g4, %o7 /* Previous %o7. */
465
466 mov %o0, %l0 ! stash away romvec
467 mov %o0, %g7 ! put it here too
468 mov %o1, %l1 ! stash away debug_vec too
469
470 /* Ok, let's check out our run time program counter. */
471 set current_pc, %g5
472 cmp %g3, %g5
473 be already_mapped
474 nop
475
476 /* %l6 will hold the offset we have to subtract
477 * from absolute symbols in order to access areas
478 * in our own image. If already mapped this is
479 * just plain zero, else it is KERNBASE.
480 */
481 set KERNBASE, %l6
482 b copy_prom_lvl14
483 nop
484
485already_mapped:
486 mov 0, %l6
487
488 /* Copy over the Prom's level 14 clock handler. */
489copy_prom_lvl14:
490#if 1
491 /* DJHR
492 * preserve our linked/calculated instructions
493 */
494 set lvl14_save, %g1
495 set t_irq14, %g3
496 sub %g1, %l6, %g1 ! translate to physical
497 sub %g3, %l6, %g3 ! translate to physical
498 ldd [%g3], %g4
499 std %g4, [%g1]
500 ldd [%g3+8], %g4
501 std %g4, [%g1+8]
502#endif
503 rd %tbr, %g1
504 andn %g1, 0xfff, %g1 ! proms trap table base
505 or %g0, (0x1e<<4), %g2 ! offset to lvl14 intr
506 or %g1, %g2, %g2
507 set t_irq14, %g3
508 sub %g3, %l6, %g3
509 ldd [%g2], %g4
510 std %g4, [%g3]
511 ldd [%g2 + 0x8], %g4
512 std %g4, [%g3 + 0x8] ! Copy proms handler
513
323206a1
SR		 514/* DON'T TOUCH %l0 thru %l5 in these remapping routines,
515 * we need their values afterwards!
1da177e4 516 */
323206a1 517
1da177e4
LT		 518 /* Now check whether we are already mapped, if we
519 * are we can skip all this garbage coming up.
520 */
521copy_prom_done:
522 cmp %l6, 0
523 be go_to_highmem ! this will be a nop then
524 nop
525
9b4c514a
DM		 526 /* Validate that we are in fact running on an
527 * SRMMU based cpu.
528 */
529 set 0x4000, %g6
530 cmp %g7, %g6
531 bne not_a_sun4
532 nop
533
534halt_sun4_or_sun4c:
535 ld [%g7 + 0x68], %o1
536 set sun4c_notsup, %o0
537 sub %o0, %l6, %o0
538 call %o1
539 nop
540 ba halt_me
541 nop
542
543not_a_sun4:
544 lda [%g0] ASI_M_MMUREGS, %g1
545 andcc %g1, 1, %g0
546 be halt_sun4_or_sun4c
547 nop
548
1da177e4
LT		 549srmmu_remap:
550 /* First, check for a viking (TI) module. */
551 set 0x40000000, %g2
552 rd %psr, %g3
553 and %g2, %g3, %g3
554 subcc %g3, 0x0, %g0
555 bz srmmu_nviking
556 nop
557
558 /* Figure out what kind of viking we are on.
559 * We need to know if we have to play with the
560 * AC bit and disable traps or not.
561 */
562
563 /* I've only seen MicroSparc's on SparcClassics with this
564 * bit set.
565 */
566 set 0x800, %g2
567 lda [%g0] ASI_M_MMUREGS, %g3 ! peek in the control reg
568 and %g2, %g3, %g3
569 subcc %g3, 0x0, %g0
570 bnz srmmu_nviking ! is in mbus mode
571 nop
572
573 rd %psr, %g3 ! DO NOT TOUCH %g3
574 andn %g3, PSR_ET, %g2
575 wr %g2, 0x0, %psr
576 WRITE_PAUSE
577
578 /* Get context table pointer, then convert to
579 * a physical address, which is 36 bits.
580 */
581 set AC_M_CTPR, %g4
582 lda [%g4] ASI_M_MMUREGS, %g4
583 sll %g4, 0x4, %g4 ! We use this below
584 ! DO NOT TOUCH %g4
585
586 /* Set the AC bit in the Viking's MMU control reg. */
587 lda [%g0] ASI_M_MMUREGS, %g5 ! DO NOT TOUCH %g5
588 set 0x8000, %g6 ! AC bit mask
589 or %g5, %g6, %g6 ! Or it in...
590 sta %g6, [%g0] ASI_M_MMUREGS ! Close your eyes...
591
592 /* Grrr, why does it seem like every other load/store
593 * on the sun4m is in some ASI space...
594 * Fine with me, let's get the pointer to the level 1
595 * page table directory and fetch its entry.
596 */
597 lda [%g4] ASI_M_BYPASS, %o1 ! This is a level 1 ptr
598 srl %o1, 0x4, %o1 ! Clear low 4 bits
599 sll %o1, 0x8, %o1 ! Make physical
600
601 /* Ok, pull in the PTD. */
602 lda [%o1] ASI_M_BYPASS, %o2 ! This is the 0x0 16MB pgd
603
604 /* Calculate to KERNBASE entry. */
605 add %o1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %o3
606
607 /* Poke the entry into the calculated address. */
608 sta %o2, [%o3] ASI_M_BYPASS
609
610 /* I don't get it Sun, if you engineered all these
611 * boot loaders and the PROM (thank you for the debugging
612 * features btw) why did you not have them load kernel
613 * images up in high address space, since this is necessary
614 * for ABI compliance anyways? Does this low-mapping provide
615 * enhanced interoperability?
616 *
617 * "The PROM is the computer."
618 */
619
620 /* Ok, restore the MMU control register we saved in %g5 */
621 sta %g5, [%g0] ASI_M_MMUREGS ! POW... ouch
622
623 /* Turn traps back on. We saved it in %g3 earlier. */
624 wr %g3, 0x0, %psr ! tick tock, tick tock
625
626 /* Now we burn precious CPU cycles due to bad engineering. */
627 WRITE_PAUSE
628
629 /* Wow, all that just to move a 32-bit value from one
630 * place to another... Jump to high memory.
631 */
632 b go_to_highmem
633 nop
634
635 /* This works on viking's in Mbus mode and all
636 * other MBUS modules. It is virtually the same as
637 * the above madness sans turning traps off and flipping
638 * the AC bit.
639 */
640srmmu_nviking:
641 set AC_M_CTPR, %g1
642 lda [%g1] ASI_M_MMUREGS, %g1 ! get ctx table ptr
643 sll %g1, 0x4, %g1 ! make physical addr
644 lda [%g1] ASI_M_BYPASS, %g1 ! ptr to level 1 pg_table
645 srl %g1, 0x4, %g1
646 sll %g1, 0x8, %g1 ! make phys addr for l1 tbl
647
648 lda [%g1] ASI_M_BYPASS, %g2 ! get level1 entry for 0x0
649 add %g1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %g3
650 sta %g2, [%g3] ASI_M_BYPASS ! place at KERNBASE entry
651 b go_to_highmem
652 nop ! wheee....
653
1da177e4
LT		 654
655/* Now do a non-relative jump so that PC is in high-memory */
656go_to_highmem:
657 set execute_in_high_mem, %g1
658 jmpl %g1, %g0
659 nop
660
661/* The code above should be at beginning and we have to take care about
a0871e8c 662 * short jumps, as branching to .init.text section from .text is usually
1da177e4
LT		 663 * impossible */
664 __INIT
665/* Acquire boot time privileged register values, this will help debugging.
666 * I figure out and store nwindows and nwindowsm1 later on.
667 */
668execute_in_high_mem:
669 mov %l0, %o0 ! put back romvec
670 mov %l1, %o1 ! and debug_vec
671
672 sethi %hi(prom_vector_p), %g1
673 st %o0, [%g1 + %lo(prom_vector_p)]
674
675 sethi %hi(linux_dbvec), %g1
676 st %o1, [%g1 + %lo(linux_dbvec)]
677
1da177e4
LT		 678/* Get the machine type via the mysterious romvec node operations. */
679
680 add %g7, 0x1c, %l1
681 ld [%l1], %l0
682 ld [%l0], %l0
683 call %l0
684 or %g0, %g0, %o0 ! next_node(0) = first_node
685 or %o0, %g0, %g6
686
687 sethi %hi(cputypvar), %o1 ! First node has cpu-arch
688 or %o1, %lo(cputypvar), %o1
689 sethi %hi(cputypval), %o2 ! information, the string
690 or %o2, %lo(cputypval), %o2
691 ld [%l1], %l0 ! 'compatibility' tells
692 ld [%l0 + 0xc], %l0 ! that we want 'sun4x' where
693 call %l0 ! x is one of '', 'c', 'm',
694 nop ! 'd' or 'e'. %o2 holds pointer
695 ! to a buf where above string
696 ! will get stored by the prom.
697
698 subcc %o0, %g0, %g0
699 bpos got_prop ! Got the property
700 nop
701
702 or %g6, %g0, %o0
703 sethi %hi(cputypvar_sun4m), %o1
704 or %o1, %lo(cputypvar_sun4m), %o1
705 sethi %hi(cputypval), %o2
706 or %o2, %lo(cputypval), %o2
707 ld [%l1], %l0
708 ld [%l0 + 0xc], %l0
709 call %l0
710 nop
711
712got_prop:
0fd7ef1f
KE		 713#ifdef CONFIG_SPARC_LEON
714 /* no cpu-type check is needed, it is a SPARC-LEON */
8401707f 715
01dae0f0 716 sethi %hi(boot_cpu_id), %g2 ! boot-cpu index
8401707f 717
01dae0f0
DH		 718#ifdef CONFIG_SMP
719 ldub [%g2 + %lo(boot_cpu_id)], %g1
720 cmp %g1, 0xff ! unset means first CPU
721 bne leon_smp_cpu_startup ! continue only with master
722 nop
723#endif
724 /* Get CPU-ID from most significant 4-bit of ASR17 */
725 rd %asr17, %g1
726 srl %g1, 28, %g1
8401707f 727
01dae0f0
DH		 728 /* Update boot_cpu_id only on boot cpu */
729 stub %g1, [%g2 + %lo(boot_cpu_id)]
8401707f 730
323206a1 731 ba continue_boot
0fd7ef1f
KE		 732 nop
733#endif
1da177e4
LT		 734 set cputypval, %o2
735 ldub [%o2 + 0x4], %l1
736
737 cmp %l1, ' '
323206a1 738 be no_sun4c_here
1da177e4 739 cmp %l1, 'c'
323206a1 740 be no_sun4c_here
1da177e4
LT		 741 cmp %l1, 'm'
742 be 1f
743 cmp %l1, 's'
744 be 1f
745 cmp %l1, 'd'
746 be 1f
747 cmp %l1, 'e'
748 be no_sun4e_here ! Could be a sun4e.
749 nop
750 b no_sun4u_here ! AIEEE, a V9 sun4u... Get our BIG BROTHER kernel :))
751 nop
752
7531: set cputypval, %l1
754 ldub [%l1 + 0x4], %l1
323206a1 755 cmp %l1, 'd' ! Let us see how the beast will die
1da177e4
LT		 756 be sun4d_init
757 nop
758
323206a1
SR		 759 /* If not sun4d assume sun4m */
760 b sun4m_init
1da177e4
LT		 761 nop
762
763/* CPUID in bootbus can be found at PA 0xff0140000 */
764#define SUN4D_BOOTBUS_CPUID 0xf0140000
765
766sun4d_init:
767 /* Need to patch call to handler_irq */
768 set patch_handler_irq, %g4
769 set sun4d_handler_irq, %g5
770 sethi %hi(0x40000000), %g3 ! call
771 sub %g5, %g4, %g5
772 srl %g5, 2, %g5
773 or %g5, %g3, %g5
774 st %g5, [%g4]
775
776#ifdef CONFIG_SMP
777 /* Get our CPU id out of bootbus */
778 set SUN4D_BOOTBUS_CPUID, %g3
779 lduba [%g3] ASI_M_CTL, %g3
780 and %g3, 0xf8, %g3
781 srl %g3, 3, %g4
782 sta %g4, [%g0] ASI_M_VIKING_TMP1
783 sethi %hi(boot_cpu_id), %g5
784 stb %g4, [%g5 + %lo(boot_cpu_id)]
1da177e4
LT		 785#endif
786
787 /* Fall through to sun4m_init */
788
789sun4m_init:
790 /* XXX Fucking Cypress... */
791 lda [%g0] ASI_M_MMUREGS, %g5
792 srl %g5, 28, %g4
793
794 cmp %g4, 1
795 bne 1f
796 srl %g5, 24, %g4
797
798 and %g4, 0xf, %g4
799 cmp %g4, 7 /* This would be a HyperSparc. */
800
801 bne 2f
802 nop
803
8041:
805
806#define PATCH_IT(dst, src) \
807 set (dst), %g5; \
808 set (src), %g4; \
809 ld [%g4], %g3; \
810 st %g3, [%g5]; \
811 ld [%g4+0x4], %g3; \
812 st %g3, [%g5+0x4];
813
814 /* Signed multiply. */
815 PATCH_IT(.mul, .mul_patch)
816 PATCH_IT(.mul+0x08, .mul_patch+0x08)
817
818 /* Signed remainder. */
819 PATCH_IT(.rem, .rem_patch)
820 PATCH_IT(.rem+0x08, .rem_patch+0x08)
821 PATCH_IT(.rem+0x10, .rem_patch+0x10)
822 PATCH_IT(.rem+0x18, .rem_patch+0x18)
823 PATCH_IT(.rem+0x20, .rem_patch+0x20)
824 PATCH_IT(.rem+0x28, .rem_patch+0x28)
825
826 /* Signed division. */
827 PATCH_IT(.div, .div_patch)
828 PATCH_IT(.div+0x08, .div_patch+0x08)
829 PATCH_IT(.div+0x10, .div_patch+0x10)
830 PATCH_IT(.div+0x18, .div_patch+0x18)
831 PATCH_IT(.div+0x20, .div_patch+0x20)
832
833 /* Unsigned multiply. */
834 PATCH_IT(.umul, .umul_patch)
835 PATCH_IT(.umul+0x08, .umul_patch+0x08)
836
837 /* Unsigned remainder. */
838 PATCH_IT(.urem, .urem_patch)
839 PATCH_IT(.urem+0x08, .urem_patch+0x08)
840 PATCH_IT(.urem+0x10, .urem_patch+0x10)
841 PATCH_IT(.urem+0x18, .urem_patch+0x18)
842
843 /* Unsigned division. */
844 PATCH_IT(.udiv, .udiv_patch)
845 PATCH_IT(.udiv+0x08, .udiv_patch+0x08)
846 PATCH_IT(.udiv+0x10, .udiv_patch+0x10)
847
848#undef PATCH_IT
849
850/* Ok, the PROM could have done funny things and apple cider could still
851 * be sitting in the fault status/address registers. Read them all to
852 * clear them so we don't get magic faults later on.
853 */
854/* This sucks, apparently this makes Vikings call prom panic, will fix later */
8552:
856 rd %psr, %o1
857 srl %o1, 28, %o1 ! Get a type of the CPU
858
859 subcc %o1, 4, %g0 ! TI: Viking or MicroSPARC
323206a1 860 be continue_boot
1da177e4
LT		 861 nop
862
863 set AC_M_SFSR, %o0
864 lda [%o0] ASI_M_MMUREGS, %g0
865 set AC_M_SFAR, %o0
866 lda [%o0] ASI_M_MMUREGS, %g0
867
868 /* Fujitsu MicroSPARC-II has no asynchronous flavors of FARs */
869 subcc %o1, 0, %g0
323206a1 870 be continue_boot
1da177e4
LT		 871 nop
872
873 set AC_M_AFSR, %o0
874 lda [%o0] ASI_M_MMUREGS, %g0
875 set AC_M_AFAR, %o0
876 lda [%o0] ASI_M_MMUREGS, %g0
877 nop
878
879
323206a1 880continue_boot:
1da177e4
LT		 881
882/* Aieee, now set PC and nPC, enable traps, give ourselves a stack and it's
883 * show-time!
884 */
885
886 sethi %hi(cputyp), %o0
887 st %g4, [%o0 + %lo(cputyp)]
888
889 /* Turn on Supervisor, EnableFloating, and all the PIL bits.
890 * Also puts us in register window zero with traps off.
891 */
892 set (PSR_PS | PSR_S | PSR_PIL | PSR_EF), %g2
893 wr %g2, 0x0, %psr
894 WRITE_PAUSE
895
896 /* I want a kernel stack NOW! */
897 set init_thread_union, %g1
898 set (THREAD_SIZE - STACKFRAME_SZ), %g2
899 add %g1, %g2, %sp
900 mov 0, %fp /* And for good luck */
901
902 /* Zero out our BSS section. */
903 set __bss_start , %o0 ! First address of BSS
86ed40bd 904 set _end , %o1 ! Last address of BSS
1da177e4
LT		 905 add %o0, 0x1, %o0
9061:
907 stb %g0, [%o0]
908 subcc %o0, %o1, %g0
909 bl 1b
910 add %o0, 0x1, %o0
911
5fcafb7a
DH		 912 /* If boot_cpu_id has not been setup by machine specific
913 * init-code above we default it to zero.
914 */
915 sethi %hi(boot_cpu_id), %g2
916 ldub [%g2 + %lo(boot_cpu_id)], %g3
917 cmp %g3, 0xff
918 bne 1f
919 nop
920 mov %g0, %g3
921 stub %g3, [%g2 + %lo(boot_cpu_id)]
922
9231: /* boot_cpu_id set. calculate boot_cpu_id4 = boot_cpu_id*4 */
924 sll %g3, 2, %g3
925 sethi %hi(boot_cpu_id4), %g2
926 stub %g3, [%g2 + %lo(boot_cpu_id4)]
927
1da177e4
LT		 928 /* Initialize the uwinmask value for init task just in case.
929 * But first make current_set[boot_cpu_id] point to something useful.
930 */
931 set init_thread_union, %g6
932 set current_set, %g2
933#ifdef CONFIG_SMP
1da177e4
LT		 934 st %g6, [%g2]
935 add %g2, %g3, %g2
936#endif
937 st %g6, [%g2]
938
939 st %g0, [%g6 + TI_UWINMASK]
940
941/* Compute NWINDOWS and stash it away. Now uses %wim trick explained
942 * in the V8 manual. Ok, this method seems to work, Sparc is cool...
943 * No, it doesn't work, have to play the save/readCWP/restore trick.
944 */
945
946 wr %g0, 0x0, %wim ! so we do not get a trap
947 WRITE_PAUSE
948
949 save
950
951 rd %psr, %g3
952
953 restore
954
955 and %g3, 0x1f, %g3
956 add %g3, 0x1, %g3
957
958 mov 2, %g1
959 wr %g1, 0x0, %wim ! make window 1 invalid
960 WRITE_PAUSE
961
962 cmp %g3, 0x7
963 bne 2f
964 nop
965
966 /* Adjust our window handling routines to
967 * do things correctly on 7 window Sparcs.
968 */
969
970#define PATCH_INSN(src, dest) \
971 set src, %g5; \
972 set dest, %g2; \
973 ld [%g5], %g4; \
974 st %g4, [%g2];
975
976 /* Patch for window spills... */
977 PATCH_INSN(spnwin_patch1_7win, spnwin_patch1)
978 PATCH_INSN(spnwin_patch2_7win, spnwin_patch2)
979 PATCH_INSN(spnwin_patch3_7win, spnwin_patch3)
980
981 /* Patch for window fills... */
982 PATCH_INSN(fnwin_patch1_7win, fnwin_patch1)
983 PATCH_INSN(fnwin_patch2_7win, fnwin_patch2)
984
985 /* Patch for trap entry setup... */
986 PATCH_INSN(tsetup_7win_patch1, tsetup_patch1)
987 PATCH_INSN(tsetup_7win_patch2, tsetup_patch2)
988 PATCH_INSN(tsetup_7win_patch3, tsetup_patch3)
989 PATCH_INSN(tsetup_7win_patch4, tsetup_patch4)
990 PATCH_INSN(tsetup_7win_patch5, tsetup_patch5)
991 PATCH_INSN(tsetup_7win_patch6, tsetup_patch6)
992
993 /* Patch for returning from traps... */
994 PATCH_INSN(rtrap_7win_patch1, rtrap_patch1)
995 PATCH_INSN(rtrap_7win_patch2, rtrap_patch2)
996 PATCH_INSN(rtrap_7win_patch3, rtrap_patch3)
997 PATCH_INSN(rtrap_7win_patch4, rtrap_patch4)
998 PATCH_INSN(rtrap_7win_patch5, rtrap_patch5)
999
1000 /* Patch for killing user windows from the register file. */
1001 PATCH_INSN(kuw_patch1_7win, kuw_patch1)
1002
1003 /* Now patch the kernel window flush sequences.
1004 * This saves 2 traps on every switch and fork.
1005 */
1006 set 0x01000000, %g4
1007 set flush_patch_one, %g5
1008 st %g4, [%g5 + 0x18]
1009 st %g4, [%g5 + 0x1c]
1010 set flush_patch_two, %g5
1011 st %g4, [%g5 + 0x18]
1012 st %g4, [%g5 + 0x1c]
1013 set flush_patch_three, %g5
1014 st %g4, [%g5 + 0x18]
1015 st %g4, [%g5 + 0x1c]
1016 set flush_patch_four, %g5
1017 st %g4, [%g5 + 0x18]
1018 st %g4, [%g5 + 0x1c]
1019 set flush_patch_exception, %g5
1020 st %g4, [%g5 + 0x18]
1021 st %g4, [%g5 + 0x1c]
1022 set flush_patch_switch, %g5
1023 st %g4, [%g5 + 0x18]
1024 st %g4, [%g5 + 0x1c]
1025
10262:
1027 sethi %hi(nwindows), %g4
1028 st %g3, [%g4 + %lo(nwindows)] ! store final value
1029 sub %g3, 0x1, %g3
1030 sethi %hi(nwindowsm1), %g4
1031 st %g3, [%g4 + %lo(nwindowsm1)]
1032
1033 /* Here we go, start using Linux's trap table... */
1034 set trapbase, %g3
1035 wr %g3, 0x0, %tbr
1036 WRITE_PAUSE
1037
1038 /* Finally, turn on traps so that we can call c-code. */
1039 rd %psr, %g3
1040 wr %g3, 0x0, %psr
1041 WRITE_PAUSE
1042
1043 wr %g3, PSR_ET, %psr
1044 WRITE_PAUSE
1045
1046 /* First we call prom_init() to set up PROMLIB, then
1047 * off to start_kernel().
1048 */
1049
1050 sethi %hi(prom_vector_p), %g5
1051 ld [%g5 + %lo(prom_vector_p)], %o0
1052 call prom_init
1053 nop
1054
1055 call start_kernel
1056 nop
1057
1058 /* We should not get here. */
1059 call halt_me
1060 nop
323206a1
SR		 1061no_sun4c_here:
1062 ld [%g7 + 0x68], %o1
1063 set sun4c_notsup, %o0
1064 call %o1
1da177e4 1065 nop
323206a1 1066 b halt_me
1da177e4 1067 nop
5110bd21 1068
1da177e4
LT		 1069no_sun4e_here:
1070 ld [%g7 + 0x68], %o1
1071 set sun4e_notsup, %o0
1072 call %o1
1073 nop
1074 b halt_me
1075 nop
1076
1077 __INITDATA
1078
1079sun4u_1:
1080 .asciz "finddevice"
1081 .align 4
1082sun4u_2:
1083 .asciz "/chosen"
1084 .align 4
1085sun4u_3:
1086 .asciz "getprop"
1087 .align 4
1088sun4u_4:
1089 .asciz "stdout"
1090 .align 4
1091sun4u_5:
1092 .asciz "write"
1093 .align 4
1094sun4u_6:
1095 .asciz "\n\rOn sun4u you have to use UltraLinux (64bit) kernel\n\rand not a 32bit sun4[cdem] version\n\r\n\r"
1096sun4u_6e:
1097 .align 4
1098sun4u_7:
1099 .asciz "exit"
1100 .align 8
1101sun4u_a1:
1102 .word 0, sun4u_1, 0, 1, 0, 1, 0, sun4u_2, 0
1103sun4u_r1:
1104 .word 0
1105sun4u_a2:
1106 .word 0, sun4u_3, 0, 4, 0, 1, 0
1107sun4u_i2:
1108 .word 0, 0, sun4u_4, 0, sun4u_1, 0, 8, 0
1109sun4u_r2:
1110 .word 0
1111sun4u_a3:
1112 .word 0, sun4u_5, 0, 3, 0, 1, 0
1113sun4u_i3:
1114 .word 0, 0, sun4u_6, 0, sun4u_6e - sun4u_6 - 1, 0
1115sun4u_r3:
1116 .word 0
1117sun4u_a4:
1118 .word 0, sun4u_7, 0, 0, 0, 0
1119sun4u_r4:
1120
1121 __INIT
1122no_sun4u_here:
1123 set sun4u_a1, %o0
1124 set current_pc, %l2
1125 cmp %l2, %g3
1126 be 1f
1127 mov %o4, %l0
1128 sub %g3, %l2, %l6
1129 add %o0, %l6, %o0
1130 mov %o0, %l4
1131 mov sun4u_r4 - sun4u_a1, %l3
1132 ld [%l4], %l5
11332:
1134 add %l4, 4, %l4
1135 cmp %l5, %l2
1136 add %l5, %l6, %l5
1137 bgeu,a 3f
1138 st %l5, [%l4 - 4]
11393:
1140 subcc %l3, 4, %l3
1141 bne 2b
1142 ld [%l4], %l5
11431:
1144 call %l0
1145 mov %o0, %l1
1146
1147 ld [%l1 + (sun4u_r1 - sun4u_a1)], %o1
1148 add %l1, (sun4u_a2 - sun4u_a1), %o0
1149 call %l0
1150 st %o1, [%o0 + (sun4u_i2 - sun4u_a2)]
1151
1152 ld [%l1 + (sun4u_1 - sun4u_a1)], %o1
1153 add %l1, (sun4u_a3 - sun4u_a1), %o0
1154 call %l0
1155 st %o1, [%o0 + (sun4u_i3 - sun4u_a3)]
1156
1157 call %l0
1158 add %l1, (sun4u_a4 - sun4u_a1), %o0
1159
1160 /* Not reached */
1161halt_me:
1162 ld [%g7 + 0x74], %o0
1163 call %o0 ! Get us out of here...
1164 nop ! Apparently Solaris is better.
1165
1166/* Ok, now we continue in the .data/.text sections */
1167
1168 .data
1169 .align 4
1170
1171/*
1172 * Fill up the prom vector, note in particular the kind first element,
1173 * no joke. I don't need all of them in here as the entire prom vector
1174 * gets initialized in c-code so all routines can use it.
1175 */
1176
1da177e4
LT		 1177prom_vector_p:
1178 .word 0
1179
1180/* We calculate the following at boot time, window fills/spills and trap entry
1181 * code uses these to keep track of the register windows.
1182 */
1183
1184 .align 4
1185 .globl nwindows
1186 .globl nwindowsm1
1187nwindows:
1188 .word 8
1189nwindowsm1:
1190 .word 7
1191
1192/* Boot time debugger vector value. We need this later on. */
1193
1194 .align 4
1195 .globl linux_dbvec
1196linux_dbvec:
1197 .word 0
1198 .word 0
1199
1200 .align 8
1201
1202 .globl lvl14_save
1203lvl14_save:
1204 .word 0
1205 .word 0
1206 .word 0
1207 .word 0
1208 .word t_irq14
1209
1210 .section ".fixup",#alloc,#execinstr
1211 .globl __ret_efault
1212__ret_efault:
1213 ret
1214 restore %g0, -EFAULT, %o0
Linux kernel - Deliverables
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