| blob | 42d3de59d19bfe931566d43dac181c71abb68632 |
1 /* $Id: head.S,v 1.105 2001/08/12 09:08:56 davem 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) 1995,1999 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 */
13 #include <linux/version.h>
14 #include <linux/config.h>
15 #include <linux/init.h>
17 #include <asm/head.h>
18 #include <asm/asi.h>
19 #include <asm/contregs.h>
20 #include <asm/ptrace.h>
21 #include <asm/psr.h>
22 #include <asm/page.h>
23 #include <asm/kdebug.h>
24 #include <asm/winmacro.h>
25 #include <asm/thread_info.h> /* TI_UWINMASK */
26 #include <asm/errno.h>
27 #include <asm/pgtsrmmu.h> /* SRMMU_PGDIR_SHIFT */
29 .data
30 /*
31 * The following are used with the prom_vector node-ops to figure out
32 * the cpu-type
33 */
35 .align 4
36 .globl cputyp
37 cputyp:
38 .word 1
40 .align 4
41 .globl cputypval
42 cputypval:
43 .asciz "sun4c"
44 .ascii " "
46 cputypvalend:
47 cputypvallen = cputypvar - cputypval
49 .align 4
50 /*
51 * Sun people can't spell worth damn. "compatability" indeed.
52 * At least we *know* we can't spell, and use a spell-checker.
53 */
55 /* Uh, actually Linus it is I who cannot spell. Too much murky
56 * Sparc assembly will do this to ya.
57 */
58 cputypvar:
59 .asciz "compatability"
61 /* Tested on SS-5, SS-10. Probably someone at Sun applied a spell-checker. */
62 .align 4
63 cputypvar_sun4m:
64 .asciz "compatible"
66 .align 4
68 #ifndef CONFIG_SUN4
69 sun4_notsup:
70 .asciz "Sparc-Linux sun4 needs a specially compiled kernel, turn CONFIG_SUN4 on.\n\n"
71 .align 4
72 #else
73 sun4cdm_notsup:
74 .asciz "Kernel compiled with CONFIG_SUN4 cannot run on SUN4C/SUN4M/SUN4D\nTurn CONFIG_SUN4 off.\n\n"
75 .align 4
76 #endif
78 sun4e_notsup:
79 .asciz "Sparc-Linux sun4e support does not exist\n\n"
80 .align 4
82 #ifndef CONFIG_SUNOS_EMUL
83 #undef SUNOS_SYSCALL_TRAP
84 #define SUNOS_SYSCALL_TRAP SUNOS_NO_SYSCALL_TRAP
85 #endif
87 /* The Sparc trap table, bootloader gives us control at _start. */
88 .text
89 .globl start, _stext, _start, __stext
90 .globl trapbase
91 _start: /* danger danger */
92 __stext:
93 _stext:
94 start:
95 trapbase:
96 #ifdef CONFIG_SMP
97 trapbase_cpu0:
98 #endif
99 /* We get control passed to us here at t_zero. */
100 t_zero: b gokernel; nop; nop; nop;
101 t_tflt: SPARC_TFAULT /* Inst. Access Exception */
102 t_bins: TRAP_ENTRY(0x2, bad_instruction) /* Illegal Instruction */
103 t_pins: TRAP_ENTRY(0x3, priv_instruction) /* Privileged Instruction */
104 t_fpd: TRAP_ENTRY(0x4, fpd_trap_handler) /* Floating Point Disabled */
105 t_wovf: WINDOW_SPILL /* Window Overflow */
106 t_wunf: WINDOW_FILL /* Window Underflow */
107 t_mna: TRAP_ENTRY(0x7, mna_handler) /* Memory Address Not Aligned */
108 t_fpe: TRAP_ENTRY(0x8, fpe_trap_handler) /* Floating Point Exception */
109 t_dflt: SPARC_DFAULT /* Data Miss Exception */
110 t_tio: TRAP_ENTRY(0xa, do_tag_overflow) /* Tagged Instruction Ovrflw */
111 t_wpt: TRAP_ENTRY(0xb, do_watchpoint) /* Watchpoint Detected */
112 t_badc: BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
113 t_irq1: TRAP_ENTRY_INTERRUPT(1) /* IRQ Software/SBUS Level 1 */
114 t_irq2: TRAP_ENTRY_INTERRUPT(2) /* IRQ SBUS Level 2 */
115 t_irq3: TRAP_ENTRY_INTERRUPT(3) /* IRQ SCSI/DMA/SBUS Level 3 */
116 t_irq4: TRAP_ENTRY_INTERRUPT(4) /* IRQ Software Level 4 */
117 t_irq5: TRAP_ENTRY_INTERRUPT(5) /* IRQ SBUS/Ethernet Level 5 */
118 t_irq6: TRAP_ENTRY_INTERRUPT(6) /* IRQ Software Level 6 */
119 t_irq7: TRAP_ENTRY_INTERRUPT(7) /* IRQ Video/SBUS Level 5 */
120 t_irq8: TRAP_ENTRY_INTERRUPT(8) /* IRQ SBUS Level 6 */
121 t_irq9: TRAP_ENTRY_INTERRUPT(9) /* IRQ SBUS Level 7 */
122 t_irq10:TRAP_ENTRY_INTERRUPT(10) /* IRQ Timer #1 (one we use) */
123 t_irq11:TRAP_ENTRY_INTERRUPT(11) /* IRQ Floppy Intr. */
124 t_irq12:TRAP_ENTRY_INTERRUPT(12) /* IRQ Zilog serial chip */
125 t_irq13:TRAP_ENTRY_INTERRUPT(13) /* IRQ Audio Intr. */
126 t_irq14:TRAP_ENTRY_INTERRUPT(14) /* IRQ Timer #2 */
127 .globl t_nmi
128 #ifndef CONFIG_SMP
129 t_nmi: NMI_TRAP /* Level 15 (NMI) */
130 #else
131 t_nmi: TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
132 #endif
133 t_racc: TRAP_ENTRY(0x20, do_reg_access) /* General Register Access Error */
134 t_iacce:BAD_TRAP(0x21) /* Instr Access Error */
135 t_bad22:BAD_TRAP(0x22) BAD_TRAP(0x23)
136 t_cpdis:TRAP_ENTRY(0x24, do_cp_disabled) /* Co-Processor Disabled */
137 t_uflsh:SKIP_TRAP(0x25, unimp_flush) /* Unimplemented FLUSH inst. */
138 t_bad26:BAD_TRAP(0x26) BAD_TRAP(0x27)
139 t_cpexc:TRAP_ENTRY(0x28, do_cp_exception) /* Co-Processor Exception */
140 t_dacce:SPARC_DFAULT /* Data Access Error */
141 t_hwdz: TRAP_ENTRY(0x2a, do_hw_divzero) /* Division by zero, you lose... */
142 t_dserr:BAD_TRAP(0x2b) /* Data Store Error */
143 t_daccm:BAD_TRAP(0x2c) /* Data Access MMU-Miss */
144 t_bad2d:BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
145 t_bad32:BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
146 t_bad37:BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
147 t_iaccm:BAD_TRAP(0x3c) /* Instr Access MMU-Miss */
148 t_bad3d:BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) BAD_TRAP(0x41)
149 t_bad42:BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) BAD_TRAP(0x46)
150 t_bad47:BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) BAD_TRAP(0x4b)
151 t_bad4c:BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) BAD_TRAP(0x50)
152 t_bad51:BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
153 t_bad56:BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
154 t_bad5b:BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
155 t_bad60:BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
156 t_bad65:BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
157 t_bad6a:BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
158 t_bad6f:BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
159 t_bad74:BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
160 t_bad79:BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
161 t_bad7e:BAD_TRAP(0x7e) BAD_TRAP(0x7f)
162 t_sunos:SUNOS_SYSCALL_TRAP /* SunOS System Call */
163 t_sbkpt:BREAKPOINT_TRAP /* Software Breakpoint/KGDB */
164 t_divz: TRAP_ENTRY(0x82, do_hw_divzero) /* Divide by zero trap */
165 t_flwin:TRAP_ENTRY(0x83, do_flush_windows) /* Flush Windows Trap */
166 t_clwin:BAD_TRAP(0x84) /* Clean Windows Trap */
167 t_rchk: BAD_TRAP(0x85) /* Range Check */
168 t_funal:BAD_TRAP(0x86) /* Fix Unaligned Access Trap */
169 t_iovf: BAD_TRAP(0x87) /* Integer Overflow Trap */
170 t_slowl:SOLARIS_SYSCALL_TRAP /* Slowaris System Call */
171 t_netbs:NETBSD_SYSCALL_TRAP /* Net-B.S. System Call */
172 t_bad8a:BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) BAD_TRAP(0x8d) BAD_TRAP(0x8e)
173 t_bad8f:BAD_TRAP(0x8f)
174 t_linux:LINUX_SYSCALL_TRAP /* Linux System Call */
175 t_bad91:BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) BAD_TRAP(0x95)
176 t_bad96:BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) BAD_TRAP(0x9a)
177 t_bad9b:BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) BAD_TRAP(0x9f)
178 t_getcc:GETCC_TRAP /* Get Condition Codes */
179 t_setcc:SETCC_TRAP /* Set Condition Codes */
180 t_getpsr:GETPSR_TRAP /* Get PSR Register */
181 t_bada3:BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
182 t_slowi:INDIRECT_SOLARIS_SYSCALL(156)
183 t_bada8:BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
184 t_badac:BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
185 t_badb1:BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
186 t_badb6:BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
187 t_badbb:BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
188 t_badc0:BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
189 t_badc5:BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
190 t_badca:BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
191 t_badcf:BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
192 t_badd4:BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
193 t_badd9:BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
194 t_badde:BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
195 t_bade3:BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
196 t_bade8:BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
197 t_baded:BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
198 t_badf2:BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
199 t_badf7:BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
200 t_badfc:BAD_TRAP(0xfc) BAD_TRAP(0xfd)
201 dbtrap: BAD_TRAP(0xfe) /* Debugger/PROM breakpoint #1 */
202 dbtrap2:BAD_TRAP(0xff) /* Debugger/PROM breakpoint #2 */
204 .globl end_traptable
205 end_traptable:
207 #ifdef CONFIG_SMP
208 /* Trap tables for the other cpus. */
209 .globl trapbase_cpu1, trapbase_cpu2, trapbase_cpu3
210 trapbase_cpu1:
211 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
212 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
213 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
214 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
215 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
216 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
217 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
218 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
219 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
220 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
221 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
222 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
223 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
224 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
225 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
226 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush)
227 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
228 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
229 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
230 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
231 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
232 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
233 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
234 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
235 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
236 BAD_TRAP(0x50)
237 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
238 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
239 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
240 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
241 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
242 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
243 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
244 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
245 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
246 BAD_TRAP(0x7e) BAD_TRAP(0x7f)
247 SUNOS_SYSCALL_TRAP
248 BREAKPOINT_TRAP
249 TRAP_ENTRY(0x82, do_hw_divzero)
250 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
251 BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP
252 NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
253 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
254 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
255 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
256 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
257 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP
258 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
259 INDIRECT_SOLARIS_SYSCALL(156) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
260 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
261 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
262 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
263 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
264 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
265 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
266 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
267 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
268 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
269 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
270 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
271 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
272 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
273 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
274 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
275 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
276 BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
278 trapbase_cpu2:
279 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
280 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
281 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
282 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
283 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
284 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
285 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
286 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
287 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
288 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
289 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
290 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
291 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
292 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
293 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
294 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush)
295 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
296 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
297 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
298 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
299 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
300 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
301 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
302 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
303 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
304 BAD_TRAP(0x50)
305 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
306 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
307 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
308 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
309 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
310 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
311 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
312 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
313 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
314 BAD_TRAP(0x7e) BAD_TRAP(0x7f)
315 SUNOS_SYSCALL_TRAP
316 BREAKPOINT_TRAP
317 TRAP_ENTRY(0x82, do_hw_divzero)
318 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
319 BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP
320 NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
321 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
322 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
323 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
324 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
325 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP
326 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
327 INDIRECT_SOLARIS_SYSCALL(156) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
328 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
329 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
330 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
331 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
332 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
333 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
334 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
335 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
336 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
337 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
338 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
339 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
340 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
341 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
342 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
343 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
344 BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
346 trapbase_cpu3:
347 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction)
348 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler)
349 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler)
350 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT
351 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint)
352 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10)
353 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2)
354 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4)
355 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6)
356 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8)
357 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10)
358 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12)
359 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14)
360 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m)
361 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22)
362 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush)
363 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception)
364 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c)
365 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31)
366 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36)
367 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b)
368 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40)
369 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45)
370 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a)
371 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f)
372 BAD_TRAP(0x50)
373 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55)
374 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a)
375 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f)
376 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64)
377 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69)
378 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e)
379 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73)
380 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78)
381 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d)
382 BAD_TRAP(0x7e) BAD_TRAP(0x7f)
383 SUNOS_SYSCALL_TRAP
384 BREAKPOINT_TRAP
385 TRAP_ENTRY(0x82, do_hw_divzero)
386 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85)
387 BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP
388 NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c)
389 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f)
390 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94)
391 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99)
392 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e)
393 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP
394 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6)
395 INDIRECT_SOLARIS_SYSCALL(156) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab)
396 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0)
397 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5)
398 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba)
399 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf)
400 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4)
401 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9)
402 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce)
403 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3)
404 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8)
405 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd)
406 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2)
407 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7)
408 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec)
409 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1)
410 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6)
411 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb)
412 BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff)
414 #endif
415 .align PAGE_SIZE
417 /* This was the only reasonable way I could think of to properly align
418 * these page-table data structures.
419 */
420 .globl pg0, pg1, pg2, pg3
421 .globl empty_bad_page
422 .globl empty_bad_page_table
423 .globl empty_zero_page
424 .globl swapper_pg_dir
425 swapper_pg_dir: .skip PAGE_SIZE
426 pg0: .skip PAGE_SIZE
427 pg1: .skip PAGE_SIZE
428 pg2: .skip PAGE_SIZE
429 pg3: .skip PAGE_SIZE
430 empty_bad_page: .skip PAGE_SIZE
431 empty_bad_page_table: .skip PAGE_SIZE
432 empty_zero_page: .skip PAGE_SIZE
434 .global root_flags
435 .global ram_flags
436 .global root_dev
437 .global sparc_ramdisk_image
438 .global sparc_ramdisk_size
440 /* This stuff has to be in sync with SILO and other potential boot loaders
441 * Fields should be kept upward compatible and whenever any change is made,
442 * HdrS version should be incremented.
443 */
444 .ascii "HdrS"
445 .word LINUX_VERSION_CODE
446 .half 0x0203 /* HdrS version */
447 root_flags:
448 .half 1
449 root_dev:
450 .half 0
451 ram_flags:
452 .half 0
453 sparc_ramdisk_image:
454 .word 0
455 sparc_ramdisk_size:
456 .word 0
457 .word reboot_command
458 .word 0, 0, 0
459 .word _end
461 /* Cool, here we go. Pick up the romvec pointer in %o0 and stash it in
462 * %g7 and at prom_vector_p. And also quickly check whether we are on
463 * a v0, v2, or v3 prom.
464 */
465 gokernel:
466 /* Ok, it's nice to know, as early as possible, if we
467 * are already mapped where we expect to be in virtual
468 * memory. The Solaris /boot elf format bootloader
469 * will peek into our elf header and load us where
470 * we want to be, otherwise we have to re-map.
471 *
472 * Some boot loaders don't place the jmp'rs address
473 * in %o7, so we do a pc-relative call to a local
474 * label, then see what %o7 has.
475 */
477 mov %o7, %g4 ! Save %o7
479 /* Jump to it, and pray... */
480 current_pc:
481 call 1f
482 nop
484 1:
485 mov %o7, %g3
487 tst %o0
488 be no_sun4u_here
489 mov %g4, %o7 /* Previous %o7. */
491 mov %o0, %l0 ! stash away romvec
492 mov %o0, %g7 ! put it here too
493 mov %o1, %l1 ! stash away debug_vec too
495 /* Ok, let's check out our run time program counter. */
496 set current_pc, %g5
497 cmp %g3, %g5
498 be already_mapped
499 nop
501 /* %l6 will hold the offset we have to subtract
502 * from absolute symbols in order to access areas
503 * in our own image. If already mapped this is
504 * just plain zero, else it is KERNBASE.
505 */
506 set KERNBASE, %l6
507 b copy_prom_lvl14
508 nop
510 already_mapped:
511 mov 0, %l6
513 /* Copy over the Prom's level 14 clock handler. */
514 copy_prom_lvl14:
515 #if 1
516 /* DJHR
517 * preserve our linked/calculated instructions
518 */
519 set lvl14_save, %g1
520 set t_irq14, %g3
521 sub %g1, %l6, %g1 ! translate to physical
522 sub %g3, %l6, %g3 ! translate to physical
523 ldd [%g3], %g4
524 std %g4, [%g1]
525 ldd [%g3+8], %g4
526 std %g4, [%g1+8]
527 #endif
528 rd %tbr, %g1
529 andn %g1, 0xfff, %g1 ! proms trap table base
530 or %g0, (0x1e<<4), %g2 ! offset to lvl14 intr
531 or %g1, %g2, %g2
532 set t_irq14, %g3
533 sub %g3, %l6, %g3
534 ldd [%g2], %g4
535 std %g4, [%g3]
536 ldd [%g2 + 0x8], %g4
537 std %g4, [%g3 + 0x8] ! Copy proms handler
539 /* Must determine whether we are on a sun4c MMU, SRMMU, or SUN4/400 MUTANT
540 * MMU so we can remap ourselves properly. DON'T TOUCH %l0 thru %l5 in these
541 * remapping routines, we need their values afterwards!
542 */
543 /* Now check whether we are already mapped, if we
544 * are we can skip all this garbage coming up.
545 */
546 copy_prom_done:
547 cmp %l6, 0
548 be go_to_highmem ! this will be a nop then
549 nop
551 set LOAD_ADDR, %g6
552 cmp %g7, %g6
553 bne remap_not_a_sun4 ! This is not a Sun4
554 nop
556 or %g0, 0x1, %g1
557 lduba [%g1] ASI_CONTROL, %g1 ! Only safe to try on Sun4.
558 subcc %g1, 0x24, %g0 ! Is this a mutant Sun4/400???
559 be sun4_mutant_remap ! Ugh, it is...
560 nop
562 b sun4_normal_remap ! regular sun4, 2 level mmu
563 nop
565 remap_not_a_sun4:
566 lda [%g0] ASI_M_MMUREGS, %g1 ! same as ASI_PTE on sun4c
567 and %g1, 0x1, %g1 ! Test SRMMU Enable bit ;-)
568 cmp %g1, 0x0
569 be sun4c_remap ! A sun4c MMU or normal Sun4
570 nop
571 srmmu_remap:
572 /* First, check for a viking (TI) module. */
573 set 0x40000000, %g2
574 rd %psr, %g3
575 and %g2, %g3, %g3
576 subcc %g3, 0x0, %g0
577 bz srmmu_nviking
578 nop
580 /* Figure out what kind of viking we are on.
581 * We need to know if we have to play with the
582 * AC bit and disable traps or not.
583 */
585 /* I've only seen MicroSparc's on SparcClassics with this
586 * bit set.
587 */
588 set 0x800, %g2
589 lda [%g0] ASI_M_MMUREGS, %g3 ! peek in the control reg
590 and %g2, %g3, %g3
591 subcc %g3, 0x0, %g0
592 bnz srmmu_nviking ! is in mbus mode
593 nop
595 rd %psr, %g3 ! DO NOT TOUCH %g3
596 andn %g3, PSR_ET, %g2
597 wr %g2, 0x0, %psr
598 WRITE_PAUSE
600 /* Get context table pointer, then convert to
601 * a physical address, which is 36 bits.
602 */
603 set AC_M_CTPR, %g4
604 lda [%g4] ASI_M_MMUREGS, %g4
605 sll %g4, 0x4, %g4 ! We use this below
606 ! DO NOT TOUCH %g4
608 /* Set the AC bit in the Viking's MMU control reg. */
609 lda [%g0] ASI_M_MMUREGS, %g5 ! DO NOT TOUCH %g5
610 set 0x8000, %g6 ! AC bit mask
611 or %g5, %g6, %g6 ! Or it in...
612 sta %g6, [%g0] ASI_M_MMUREGS ! Close your eyes...
614 /* Grrr, why does it seem like every other load/store
615 * on the sun4m is in some ASI space...
616 * Fine with me, let's get the pointer to the level 1
617 * page table directory and fetch its entry.
618 */
619 lda [%g4] ASI_M_BYPASS, %o1 ! This is a level 1 ptr
620 srl %o1, 0x4, %o1 ! Clear low 4 bits
621 sll %o1, 0x8, %o1 ! Make physical
623 /* Ok, pull in the PTD. */
624 lda [%o1] ASI_M_BYPASS, %o2 ! This is the 0x0 16MB pgd
626 /* Calculate to KERNBASE entry. */
627 add %o1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %o3
629 /* Poke the entry into the calculated address. */
630 sta %o2, [%o3] ASI_M_BYPASS
632 /* I don't get it Sun, if you engineered all these
633 * boot loaders and the PROM (thank you for the debugging
634 * features btw) why did you not have them load kernel
635 * images up in high address space, since this is necessary
636 * for ABI compliance anyways? Does this low-mapping provide
637 * enhanced interoperability?
638 *
639 * "The PROM is the computer."
640 */
642 /* Ok, restore the MMU control register we saved in %g5 */
643 sta %g5, [%g0] ASI_M_MMUREGS ! POW... ouch
645 /* Turn traps back on. We saved it in %g3 earlier. */
646 wr %g3, 0x0, %psr ! tick tock, tick tock
648 /* Now we burn precious CPU cycles due to bad engineering. */
649 WRITE_PAUSE
651 /* Wow, all that just to move a 32-bit value from one
652 * place to another... Jump to high memory.
653 */
654 b go_to_highmem
655 nop
657 /* This works on viking's in Mbus mode and all
658 * other MBUS modules. It is virtually the same as
659 * the above madness sans turning traps off and flipping
660 * the AC bit.
661 */
662 srmmu_nviking:
663 set AC_M_CTPR, %g1
664 lda [%g1] ASI_M_MMUREGS, %g1 ! get ctx table ptr
665 sll %g1, 0x4, %g1 ! make physical addr
666 lda [%g1] ASI_M_BYPASS, %g1 ! ptr to level 1 pg_table
667 srl %g1, 0x4, %g1
668 sll %g1, 0x8, %g1 ! make phys addr for l1 tbl
670 lda [%g1] ASI_M_BYPASS, %g2 ! get level1 entry for 0x0
671 add %g1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %g3
672 sta %g2, [%g3] ASI_M_BYPASS ! place at KERNBASE entry
673 b go_to_highmem
674 nop ! wheee....
676 /* This remaps the kernel on Sun4/4xx machines
677 * that have the Sun Mutant Three Level MMU.
678 * It's like a platypus, Sun didn't have the
679 * SRMMU in conception so they kludged the three
680 * level logic in the regular Sun4 MMU probably.
681 *
682 * Basically, you take each entry in the top level
683 * directory that maps the low 3MB starting at
684 * address zero and put the mapping in the KERNBASE
685 * slots. These top level pgd's are called regmaps.
686 */
687 sun4_mutant_remap:
688 or %g0, %g0, %g3 ! source base
689 sethi %hi(KERNBASE), %g4 ! destination base
690 or %g4, %lo(KERNBASE), %g4
691 sethi %hi(0x300000), %g5
692 or %g5, %lo(0x300000), %g5 ! upper bound 3MB
693 or %g0, 0x1, %l6
694 sll %l6, 24, %l6 ! Regmap mapping size
695 add %g3, 0x2, %g3 ! Base magic
696 add %g4, 0x2, %g4 ! Base magic
698 /* Main remapping loop on Sun4-Mutant-MMU.
699 * "I am not an animal..." -Famous Mutant Person
700 */
701 sun4_mutant_loop:
702 lduha [%g3] ASI_REGMAP, %g2 ! Get lower entry
703 stha %g2, [%g4] ASI_REGMAP ! Store in high entry
704 add %g4, %l6, %g4 ! Move up high memory ptr
705 subcc %g3, %g5, %g0 ! Reached our limit?
706 blu sun4_mutant_loop ! Nope, loop again
707 add %g3, %l6, %g3 ! delay, Move up low ptr
708 b go_to_highmem ! Jump to high memory.
709 nop
711 /* The following is for non-4/4xx sun4 MMU's. */
712 sun4_normal_remap:
713 mov 0, %g3 ! source base
714 set KERNBASE, %g4 ! destination base
715 set 0x300000, %g5 ! upper bound 3MB
716 mov 1, %l6
717 sll %l6, 18, %l6 ! sun4 mmu segmap size
718 sun4_normal_loop:
719 lduha [%g3] ASI_SEGMAP, %g6 ! load phys_seg
720 stha %g6, [%g4] ASI_SEGMAP ! stort new virt mapping
721 add %g3, %l6, %g3 ! increment source pointer
722 subcc %g3, %g5, %g0 ! reached limit?
723 blu sun4_normal_loop ! nope, loop again
724 add %g4, %l6, %g4 ! delay, increment dest ptr
725 b go_to_highmem
726 nop
728 /* The following works for Sun4c MMU's */
729 sun4c_remap:
730 mov 0, %g3 ! source base
731 set KERNBASE, %g4 ! destination base
732 set 0x300000, %g5 ! upper bound 3MB
733 mov 1, %l6
734 sll %l6, 18, %l6 ! sun4c mmu segmap size
735 sun4c_remap_loop:
736 lda [%g3] ASI_SEGMAP, %g6 ! load phys_seg
737 sta %g6, [%g4] ASI_SEGMAP ! store new virt mapping
738 add %g3, %l6, %g3 ! Increment source ptr
739 subcc %g3, %g5, %g0 ! Reached limit?
740 bl sun4c_remap_loop ! Nope, loop again
741 add %g4, %l6, %g4 ! delay, Increment dest ptr
743 /* Now do a non-relative jump so that PC is in high-memory */
744 go_to_highmem:
745 set execute_in_high_mem, %g1
746 jmpl %g1, %g0
747 nop
749 /* The code above should be at beginning and we have to take care about
750 * short jumps, as branching to .text.init section from .text is usually
751 * impossible */
752 __INIT
753 /* Acquire boot time privileged register values, this will help debugging.
754 * I figure out and store nwindows and nwindowsm1 later on.
755 */
756 execute_in_high_mem:
757 mov %l0, %o0 ! put back romvec
758 mov %l1, %o1 ! and debug_vec
760 sethi %hi(prom_vector_p), %g1
761 st %o0, [%g1 + %lo(prom_vector_p)]
763 sethi %hi(linux_dbvec), %g1
764 st %o1, [%g1 + %lo(linux_dbvec)]
766 ld [%o0 + 0x4], %o3
767 and %o3, 0x3, %o5 ! get the version
769 cmp %o3, 0x2 ! a v2 prom?
770 be found_version
771 nop
773 /* paul@sfe.com.au */
774 cmp %o3, 0x3 ! a v3 prom?
775 be found_version
776 nop
778 /* Old sun4's pass our load address into %o0 instead of the prom
779 * pointer. On sun4's you have to hard code the romvec pointer into
780 * your code. Sun probably still does that because they don't even
781 * trust their own "OpenBoot" specifications.
782 */
783 set LOAD_ADDR, %g6
784 cmp %o0, %g6 ! an old sun4?
785 be sun4_init
786 nop
788 found_version:
789 #ifdef CONFIG_SUN4
790 /* For people who try sun4 kernels, even if Configure.help advises them. */
791 ld [%g7 + 0x68], %o1
792 set sun4cdm_notsup, %o0
793 call %o1
794 nop
795 b halt_me
796 nop
797 #endif
798 /* Get the machine type via the mysterious romvec node operations. */
800 add %g7, 0x1c, %l1
801 ld [%l1], %l0
802 ld [%l0], %l0
803 call %l0
804 or %g0, %g0, %o0 ! next_node(0) = first_node
805 or %o0, %g0, %g6
807 sethi %hi(cputypvar), %o1 ! First node has cpu-arch
808 or %o1, %lo(cputypvar), %o1
809 sethi %hi(cputypval), %o2 ! information, the string
810 or %o2, %lo(cputypval), %o2
811 ld [%l1], %l0 ! 'compatibility' tells
812 ld [%l0 + 0xc], %l0 ! that we want 'sun4x' where
813 call %l0 ! x is one of '', 'c', 'm',
814 nop ! 'd' or 'e'. %o2 holds pointer
815 ! to a buf where above string
816 ! will get stored by the prom.
818 subcc %o0, %g0, %g0
819 bpos got_prop ! Got the property
820 nop
822 or %g6, %g0, %o0
823 sethi %hi(cputypvar_sun4m), %o1
824 or %o1, %lo(cputypvar_sun4m), %o1
825 sethi %hi(cputypval), %o2
826 or %o2, %lo(cputypval), %o2
827 ld [%l1], %l0
828 ld [%l0 + 0xc], %l0
829 call %l0
830 nop
832 got_prop:
833 set cputypval, %o2
834 ldub [%o2 + 0x4], %l1
836 cmp %l1, ' '
837 be 1f
838 cmp %l1, 'c'
839 be 1f
840 cmp %l1, 'm'
841 be 1f
842 cmp %l1, 's'
843 be 1f
844 cmp %l1, 'd'
845 be 1f
846 cmp %l1, 'e'
847 be no_sun4e_here ! Could be a sun4e.
848 nop
849 b no_sun4u_here ! AIEEE, a V9 sun4u... Get our BIG BROTHER kernel :))
850 nop
852 1: set cputypval, %l1
853 ldub [%l1 + 0x4], %l1
854 cmp %l1, 'm' ! Test for sun4d, sun4e ?
855 be sun4m_init
856 cmp %l1, 's' ! Treat sun4s as sun4m
857 be sun4m_init
858 cmp %l1, 'd' ! Let us see how the beast will die
859 be sun4d_init
860 nop
862 /* Jump into mmu context zero. */
863 set AC_CONTEXT, %g1
864 stba %g0, [%g1] ASI_CONTROL
866 b sun4c_continue_boot
867 nop
869 /* CPUID in bootbus can be found at PA 0xff0140000 */
870 #define SUN4D_BOOTBUS_CPUID 0xf0140000
872 sun4d_init:
873 /* Need to patch call to handler_irq */
874 set patch_handler_irq, %g4
875 set sun4d_handler_irq, %g5
876 sethi %hi(0x40000000), %g3 ! call
877 sub %g5, %g4, %g5
878 srl %g5, 2, %g5
879 or %g5, %g3, %g5
880 st %g5, [%g4]
882 #ifdef CONFIG_SMP
883 /* Get our CPU id out of bootbus */
884 set SUN4D_BOOTBUS_CPUID, %g3
885 lduba [%g3] ASI_M_CTL, %g3
886 and %g3, 0xf8, %g3
887 srl %g3, 3, %g4
888 sta %g4, [%g0] ASI_M_VIKING_TMP1
889 sethi %hi(boot_cpu_id), %g5
890 stb %g4, [%g5 + %lo(boot_cpu_id)]
891 sll %g4, 2, %g4
892 sethi %hi(boot_cpu_id4), %g5
893 stb %g4, [%g5 + %lo(boot_cpu_id4)]
894 #endif
896 /* Fall through to sun4m_init */
898 sun4m_init:
899 /* XXX Fucking Cypress... */
900 lda [%g0] ASI_M_MMUREGS, %g5
901 srl %g5, 28, %g4
903 cmp %g4, 1
904 bne 1f
905 srl %g5, 24, %g4
907 and %g4, 0xf, %g4
908 cmp %g4, 7 /* This would be a HyperSparc. */
910 bne 2f
911 nop
913 1:
915 #define PATCH_IT(dst, src) \
916 set (dst), %g5; \
917 set (src), %g4; \
918 ld [%g4], %g3; \
919 st %g3, [%g5]; \
920 ld [%g4+0x4], %g3; \
921 st %g3, [%g5+0x4];
923 /* Signed multiply. */
924 PATCH_IT(.mul, .mul_patch)
925 PATCH_IT(.mul+0x08, .mul_patch+0x08)
927 /* Signed remainder. */
928 PATCH_IT(.rem, .rem_patch)
929 PATCH_IT(.rem+0x08, .rem_patch+0x08)
930 PATCH_IT(.rem+0x10, .rem_patch+0x10)
931 PATCH_IT(.rem+0x18, .rem_patch+0x18)
932 PATCH_IT(.rem+0x20, .rem_patch+0x20)
933 PATCH_IT(.rem+0x28, .rem_patch+0x28)
935 /* Signed division. */
936 PATCH_IT(.div, .div_patch)
937 PATCH_IT(.div+0x08, .div_patch+0x08)
938 PATCH_IT(.div+0x10, .div_patch+0x10)
939 PATCH_IT(.div+0x18, .div_patch+0x18)
940 PATCH_IT(.div+0x20, .div_patch+0x20)
942 /* Unsigned multiply. */
943 PATCH_IT(.umul, .umul_patch)
944 PATCH_IT(.umul+0x08, .umul_patch+0x08)
946 /* Unsigned remainder. */
947 PATCH_IT(.urem, .urem_patch)
948 PATCH_IT(.urem+0x08, .urem_patch+0x08)
949 PATCH_IT(.urem+0x10, .urem_patch+0x10)
950 PATCH_IT(.urem+0x18, .urem_patch+0x18)
952 /* Unsigned division. */
953 PATCH_IT(.udiv, .udiv_patch)
954 PATCH_IT(.udiv+0x08, .udiv_patch+0x08)
955 PATCH_IT(.udiv+0x10, .udiv_patch+0x10)
957 #undef PATCH_IT
959 /* Ok, the PROM could have done funny things and apple cider could still
960 * be sitting in the fault status/address registers. Read them all to
961 * clear them so we don't get magic faults later on.
962 */
963 /* This sucks, apparently this makes Vikings call prom panic, will fix later */
964 2:
965 rd %psr, %o1
966 srl %o1, 28, %o1 ! Get a type of the CPU
968 subcc %o1, 4, %g0 ! TI: Viking or MicroSPARC
969 be sun4c_continue_boot
970 nop
972 set AC_M_SFSR, %o0
973 lda [%o0] ASI_M_MMUREGS, %g0
974 set AC_M_SFAR, %o0
975 lda [%o0] ASI_M_MMUREGS, %g0
977 /* Fujitsu MicroSPARC-II has no asynchronous flavors of FARs */
978 subcc %o1, 0, %g0
979 be sun4c_continue_boot
980 nop
982 set AC_M_AFSR, %o0
983 lda [%o0] ASI_M_MMUREGS, %g0
984 set AC_M_AFAR, %o0
985 lda [%o0] ASI_M_MMUREGS, %g0
986 nop
989 sun4c_continue_boot:
992 /* Aieee, now set PC and nPC, enable traps, give ourselves a stack and it's
993 * show-time!
994 */
996 sethi %hi(cputyp), %o0
997 st %g4, [%o0 + %lo(cputyp)]
999 /* Turn on Supervisor, EnableFloating, and all the PIL bits.
1000 * Also puts us in register window zero with traps off.
1001 */
1002 set (PSR_PS | PSR_S | PSR_PIL | PSR_EF), %g2
1003 wr %g2, 0x0, %psr
1004 WRITE_PAUSE
1006 /* I want a kernel stack NOW! */
1007 set init_thread_union, %g1
1008 set (THREAD_SIZE - STACKFRAME_SZ), %g2
1009 add %g1, %g2, %sp
1010 mov 0, %fp /* And for good luck */
1012 /* Zero out our BSS section. */
1013 set __bss_start , %o0 ! First address of BSS
1014 set end , %o1 ! Last address of BSS
1015 add %o0, 0x1, %o0
1016 1:
1017 stb %g0, [%o0]
1018 subcc %o0, %o1, %g0
1019 bl 1b
1020 add %o0, 0x1, %o0
1022 /* Initialize the uwinmask value for init task just in case.
1023 * But first make current_set[boot_cpu_id] point to something useful.
1024 */
1025 set init_thread_union, %g6
1026 set current_set, %g2
1027 #ifdef CONFIG_SMP
1028 sethi %hi(boot_cpu_id4), %g3
1029 ldub [%g3 + %lo(boot_cpu_id4)], %g3
1030 st %g6, [%g2]
1031 add %g2, %g3, %g2
1032 #endif
1033 st %g6, [%g2]
1035 st %g0, [%g6 + TI_UWINMASK]
1037 /* Compute NWINDOWS and stash it away. Now uses %wim trick explained
1038 * in the V8 manual. Ok, this method seems to work, Sparc is cool...
1039 * No, it doesn't work, have to play the save/readCWP/restore trick.
1040 */
1042 wr %g0, 0x0, %wim ! so we do not get a trap
1043 WRITE_PAUSE
1045 save
1047 rd %psr, %g3
1049 restore
1051 and %g3, 0x1f, %g3
1052 add %g3, 0x1, %g3
1054 mov 2, %g1
1055 wr %g1, 0x0, %wim ! make window 1 invalid
1056 WRITE_PAUSE
1058 cmp %g3, 0x7
1059 bne 2f
1060 nop
1062 /* Adjust our window handling routines to
1063 * do things correctly on 7 window Sparcs.
1064 */
1066 #define PATCH_INSN(src, dest) \
1067 set src, %g5; \
1068 set dest, %g2; \
1069 ld [%g5], %g4; \
1070 st %g4, [%g2];
1072 /* Patch for window spills... */
1073 PATCH_INSN(spnwin_patch1_7win, spnwin_patch1)
1074 PATCH_INSN(spnwin_patch2_7win, spnwin_patch2)
1075 PATCH_INSN(spnwin_patch3_7win, spnwin_patch3)
1077 /* Patch for window fills... */
1078 PATCH_INSN(fnwin_patch1_7win, fnwin_patch1)
1079 PATCH_INSN(fnwin_patch2_7win, fnwin_patch2)
1081 /* Patch for trap entry setup... */
1082 PATCH_INSN(tsetup_7win_patch1, tsetup_patch1)
1083 PATCH_INSN(tsetup_7win_patch2, tsetup_patch2)
1084 PATCH_INSN(tsetup_7win_patch3, tsetup_patch3)
1085 PATCH_INSN(tsetup_7win_patch4, tsetup_patch4)
1086 PATCH_INSN(tsetup_7win_patch5, tsetup_patch5)
1087 PATCH_INSN(tsetup_7win_patch6, tsetup_patch6)
1089 /* Patch for returning from traps... */
1090 PATCH_INSN(rtrap_7win_patch1, rtrap_patch1)
1091 PATCH_INSN(rtrap_7win_patch2, rtrap_patch2)
1092 PATCH_INSN(rtrap_7win_patch3, rtrap_patch3)
1093 PATCH_INSN(rtrap_7win_patch4, rtrap_patch4)
1094 PATCH_INSN(rtrap_7win_patch5, rtrap_patch5)
1096 /* Patch for killing user windows from the register file. */
1097 PATCH_INSN(kuw_patch1_7win, kuw_patch1)
1099 /* Now patch the kernel window flush sequences.
1100 * This saves 2 traps on every switch and fork.
1101 */
1102 set 0x01000000, %g4
1103 set flush_patch_one, %g5
1104 st %g4, [%g5 + 0x18]
1105 st %g4, [%g5 + 0x1c]
1106 set flush_patch_two, %g5
1107 st %g4, [%g5 + 0x18]
1108 st %g4, [%g5 + 0x1c]
1109 set flush_patch_three, %g5
1110 st %g4, [%g5 + 0x18]
1111 st %g4, [%g5 + 0x1c]
1112 set flush_patch_four, %g5
1113 st %g4, [%g5 + 0x18]
1114 st %g4, [%g5 + 0x1c]
1115 set flush_patch_exception, %g5
1116 st %g4, [%g5 + 0x18]
1117 st %g4, [%g5 + 0x1c]
1118 set flush_patch_switch, %g5
1119 st %g4, [%g5 + 0x18]
1120 st %g4, [%g5 + 0x1c]
1122 2:
1123 sethi %hi(nwindows), %g4
1124 st %g3, [%g4 + %lo(nwindows)] ! store final value
1125 sub %g3, 0x1, %g3
1126 sethi %hi(nwindowsm1), %g4
1127 st %g3, [%g4 + %lo(nwindowsm1)]
1129 /* Here we go, start using Linux's trap table... */
1130 set trapbase, %g3
1131 wr %g3, 0x0, %tbr
1132 WRITE_PAUSE
1134 /* Finally, turn on traps so that we can call c-code. */
1135 rd %psr, %g3
1136 wr %g3, 0x0, %psr
1137 WRITE_PAUSE
1139 wr %g3, PSR_ET, %psr
1140 WRITE_PAUSE
1142 /* First we call prom_init() to set up PROMLIB, then
1143 * off to start_kernel().
1144 */
1146 sethi %hi(prom_vector_p), %g5
1147 ld [%g5 + %lo(prom_vector_p)], %o0
1148 call prom_init
1149 nop
1151 call start_kernel
1152 nop
1154 /* We should not get here. */
1155 call halt_me
1156 nop
1158 sun4_init:
1159 #ifdef CONFIG_SUN4
1160 /* There, happy now Adrian? */
1161 set cputypval, %o2 ! Let everyone know we
1162 set ' ', %o0 ! are a "sun4 " architecture
1163 stb %o0, [%o2 + 0x4]
1165 b got_prop
1166 nop
1167 #else
1168 sethi %hi(SUN4_PROM_VECTOR+0x84), %o1
1169 ld [%o1 + %lo(SUN4_PROM_VECTOR+0x84)], %o1
1170 set sun4_notsup, %o0
1171 call %o1 /* printf */
1172 nop
1173 sethi %hi(SUN4_PROM_VECTOR+0xc4), %o1
1174 ld [%o1 + %lo(SUN4_PROM_VECTOR+0xc4)], %o1
1175 call %o1 /* exittomon */
1176 nop
1177 1: ba 1b ! Cannot exit into KMON
1178 nop
1179 #endif
1180 no_sun4e_here:
1181 ld [%g7 + 0x68], %o1
1182 set sun4e_notsup, %o0
1183 call %o1
1184 nop
1185 b halt_me
1186 nop
1188 __INITDATA
1190 sun4u_1:
1191 .asciz "finddevice"
1192 .align 4
1193 sun4u_2:
1194 .asciz "/chosen"
1195 .align 4
1196 sun4u_3:
1197 .asciz "getprop"
1198 .align 4
1199 sun4u_4:
1200 .asciz "stdout"
1201 .align 4
1202 sun4u_5:
1203 .asciz "write"
1204 .align 4
1205 sun4u_6:
1206 .asciz "\n\rOn sun4u you have to use UltraLinux (64bit) kernel\n\rand not a 32bit sun4[cdem] version\n\r\n\r"
1207 sun4u_6e:
1208 .align 4
1209 sun4u_7:
1210 .asciz "exit"
1211 .align 8
1212 sun4u_a1:
1213 .word 0, sun4u_1, 0, 1, 0, 1, 0, sun4u_2, 0
1214 sun4u_r1:
1215 .word 0
1216 sun4u_a2:
1217 .word 0, sun4u_3, 0, 4, 0, 1, 0
1218 sun4u_i2:
1219 .word 0, 0, sun4u_4, 0, sun4u_1, 0, 8, 0
1220 sun4u_r2:
1221 .word 0
1222 sun4u_a3:
1223 .word 0, sun4u_5, 0, 3, 0, 1, 0
1224 sun4u_i3:
1225 .word 0, 0, sun4u_6, 0, sun4u_6e - sun4u_6 - 1, 0
1226 sun4u_r3:
1227 .word 0
1228 sun4u_a4:
1229 .word 0, sun4u_7, 0, 0, 0, 0
1230 sun4u_r4:
1232 __INIT
1233 no_sun4u_here:
1234 set sun4u_a1, %o0
1235 set current_pc, %l2
1236 cmp %l2, %g3
1237 be 1f
1238 mov %o4, %l0
1239 sub %g3, %l2, %l6
1240 add %o0, %l6, %o0
1241 mov %o0, %l4
1242 mov sun4u_r4 - sun4u_a1, %l3
1243 ld [%l4], %l5
1244 2:
1245 add %l4, 4, %l4
1246 cmp %l5, %l2
1247 add %l5, %l6, %l5
1248 bgeu,a 3f
1249 st %l5, [%l4 - 4]
1250 3:
1251 subcc %l3, 4, %l3
1252 bne 2b
1253 ld [%l4], %l5
1254 1:
1255 call %l0
1256 mov %o0, %l1
1258 ld [%l1 + (sun4u_r1 - sun4u_a1)], %o1
1259 add %l1, (sun4u_a2 - sun4u_a1), %o0
1260 call %l0
1261 st %o1, [%o0 + (sun4u_i2 - sun4u_a2)]
1263 ld [%l1 + (sun4u_1 - sun4u_a1)], %o1
1264 add %l1, (sun4u_a3 - sun4u_a1), %o0
1265 call %l0
1266 st %o1, [%o0 + (sun4u_i3 - sun4u_a3)]
1268 call %l0
1269 add %l1, (sun4u_a4 - sun4u_a1), %o0
1271 /* Not reached */
1272 halt_me:
1273 ld [%g7 + 0x74], %o0
1274 call %o0 ! Get us out of here...
1275 nop ! Apparently Solaris is better.
1277 /* Ok, now we continue in the .data/.text sections */
1279 .data
1280 .align 4
1282 /*
1283 * Fill up the prom vector, note in particular the kind first element,
1284 * no joke. I don't need all of them in here as the entire prom vector
1285 * gets initialized in c-code so all routines can use it.
1286 */
1288 .globl prom_vector_p
1289 prom_vector_p:
1290 .word 0
1292 /* We calculate the following at boot time, window fills/spills and trap entry
1293 * code uses these to keep track of the register windows.
1294 */
1296 .align 4
1297 .globl nwindows
1298 .globl nwindowsm1
1299 nwindows:
1300 .word 8
1301 nwindowsm1:
1302 .word 7
1304 /* Boot time debugger vector value. We need this later on. */
1306 .align 4
1307 .globl linux_dbvec
1308 linux_dbvec:
1309 .word 0
1310 .word 0
1312 .align 8
1314 .globl lvl14_save
1315 lvl14_save:
1316 .word 0
1317 .word 0
1318 .word 0
1319 .word 0
1320 .word t_irq14
1322 .section ".fixup",#alloc,#execinstr
1323 .globl __ret_efault
1324 __ret_efault:
1325 ret
1326 restore %g0, -EFAULT, %o0