Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/arch/sparc/kernel/head.S
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1 /* 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> 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> 22 #include <asm/kdebug.h> 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 35 cputyp: 36 .word 1 37 38 .align 4 39 .globl cputypval 40 cputypval: 41 .asciz "sun4c" 42 .ascii " " 43 44 cputypvalend: 45 cputypvallen = 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 */ 56 cputypvar: 57 .asciz "compatability" 58 59 /* Tested on SS-5, SS-10. Probably someone at Sun applied a spell-checker. */ 60 .align 4 61 cputypvar_sun4m: 62 .asciz "compatible" 63 64 .align 4 65 66 sun4_notsup: 67 .asciz "Sparc-Linux sun4 support does no longer exist.\n\n" 68 .align 4 69 70 sun4e_notsup: 71 .asciz "Sparc-Linux sun4e support does not exist\n\n" 72 .align 4 73 74 /* The Sparc trap table, bootloader gives us control at _start. */ 75 .section .text.head,"ax" 76 .globl start, _stext, _start, __stext 77 .globl trapbase 78 _start: /* danger danger */ 79 __stext: 80 _stext: 81 start: 82 trapbase: 83 #ifdef CONFIG_SMP 84 trapbase_cpu0: 85 #endif 86 /* We get control passed to us here at t_zero. */ 87 t_zero: b gokernel; nop; nop; nop; 88 t_tflt: SPARC_TFAULT /* Inst. Access Exception */ 89 t_bins: TRAP_ENTRY(0x2, bad_instruction) /* Illegal Instruction */ 90 t_pins: TRAP_ENTRY(0x3, priv_instruction) /* Privileged Instruction */ 91 t_fpd: TRAP_ENTRY(0x4, fpd_trap_handler) /* Floating Point Disabled */ 92 t_wovf: WINDOW_SPILL /* Window Overflow */ 93 t_wunf: WINDOW_FILL /* Window Underflow */ 94 t_mna: TRAP_ENTRY(0x7, mna_handler) /* Memory Address Not Aligned */ 95 t_fpe: TRAP_ENTRY(0x8, fpe_trap_handler) /* Floating Point Exception */ 96 t_dflt: SPARC_DFAULT /* Data Miss Exception */ 97 t_tio: TRAP_ENTRY(0xa, do_tag_overflow) /* Tagged Instruction Ovrflw */ 98 t_wpt: TRAP_ENTRY(0xb, do_watchpoint) /* Watchpoint Detected */ 99 t_badc: BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 100 t_irq1: TRAP_ENTRY_INTERRUPT(1) /* IRQ Software/SBUS Level 1 */ 101 t_irq2: TRAP_ENTRY_INTERRUPT(2) /* IRQ SBUS Level 2 */ 102 t_irq3: TRAP_ENTRY_INTERRUPT(3) /* IRQ SCSI/DMA/SBUS Level 3 */ 103 t_irq4: TRAP_ENTRY_INTERRUPT(4) /* IRQ Software Level 4 */ 104 t_irq5: TRAP_ENTRY_INTERRUPT(5) /* IRQ SBUS/Ethernet Level 5 */ 105 t_irq6: TRAP_ENTRY_INTERRUPT(6) /* IRQ Software Level 6 */ 106 t_irq7: TRAP_ENTRY_INTERRUPT(7) /* IRQ Video/SBUS Level 5 */ 107 t_irq8: TRAP_ENTRY_INTERRUPT(8) /* IRQ SBUS Level 6 */ 108 t_irq9: TRAP_ENTRY_INTERRUPT(9) /* IRQ SBUS Level 7 */ 109 t_irq10:TRAP_ENTRY_INTERRUPT(10) /* IRQ Timer #1 (one we use) */ 110 t_irq11:TRAP_ENTRY_INTERRUPT(11) /* IRQ Floppy Intr. */ 111 t_irq12:TRAP_ENTRY_INTERRUPT(12) /* IRQ Zilog serial chip */ 112 t_irq13:TRAP_ENTRY_INTERRUPT(13) /* IRQ Audio Intr. */ 113 t_irq14:TRAP_ENTRY_INTERRUPT(14) /* IRQ Timer #2 */ 114 .globl t_nmi 115 #ifndef CONFIG_SMP 116 t_nmi: NMI_TRAP /* Level 15 (NMI) */ 117 #else 118 t_nmi: 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:SKIP_TRAP(0x25, unimp_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_bad80:BAD_TRAP(0x80) /* SunOS System Call */ 150 t_sbkpt:BREAKPOINT_TRAP /* Software Breakpoint/KGDB */ 151 t_divz: TRAP_ENTRY(0x82, do_hw_divzero) /* 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_bad88:BAD_TRAP(0x88) /* Slowaris System Call */ 158 t_bad89:BAD_TRAP(0x89) /* 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_getpsr:GETPSR_TRAP /* Get PSR Register */ 168 t_bada3:BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 169 t_bada7:BAD_TRAP(0xa7) 170 t_bada8:BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 171 t_badac:BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 172 t_badb1:BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 173 t_badb6:BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 174 t_badbb:BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 175 t_badc0:BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 176 t_badc5:BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 177 t_badca:BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 178 t_badcf:BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 179 t_badd4:BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 180 t_badd9:BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 181 t_badde:BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 182 t_bade3:BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 183 t_bade8:BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 184 t_baded:BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 185 t_badf2:BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 186 t_badf7:BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 187 t_badfc:BAD_TRAP(0xfc) 188 t_kgdb: KGDB_TRAP(0xfd) 189 dbtrap: BAD_TRAP(0xfe) /* Debugger/PROM breakpoint #1 */ 190 dbtrap2:BAD_TRAP(0xff) /* Debugger/PROM breakpoint #2 */ 191 192 .globl end_traptable 193 end_traptable: 194 195 #ifdef CONFIG_SMP 196 /* Trap tables for the other cpus. */ 197 .globl trapbase_cpu1, trapbase_cpu2, trapbase_cpu3 198 trapbase_cpu1: 199 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction) 200 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler) 201 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler) 202 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT 203 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint) 204 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 205 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2) 206 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4) 207 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6) 208 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8) 209 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10) 210 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12) 211 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14) 212 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 213 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22) 214 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush) 215 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception) 216 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c) 217 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 218 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 219 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 220 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) 221 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) 222 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) 223 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) 224 BAD_TRAP(0x50) 225 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 226 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 227 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 228 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 229 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 230 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 231 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 232 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 233 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 234 BAD_TRAP(0x7e) BAD_TRAP(0x7f) 235 BAD_TRAP(0x80) 236 BREAKPOINT_TRAP 237 TRAP_ENTRY(0x82, do_hw_divzero) 238 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85) 239 BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88) 240 BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) 241 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f) 242 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) 243 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) 244 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) 245 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP 246 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 247 BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 248 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 249 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 250 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 251 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 252 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 253 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 254 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 255 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 256 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 257 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 258 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 259 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 260 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 261 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 262 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 263 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 264 BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff) 265 266 trapbase_cpu2: 267 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction) 268 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler) 269 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler) 270 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT 271 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint) 272 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 273 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2) 274 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4) 275 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6) 276 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8) 277 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10) 278 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12) 279 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14) 280 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 281 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22) 282 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush) 283 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception) 284 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c) 285 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 286 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 287 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 288 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) 289 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) 290 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) 291 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) 292 BAD_TRAP(0x50) 293 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 294 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 295 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 296 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 297 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 298 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 299 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 300 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 301 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 302 BAD_TRAP(0x7e) BAD_TRAP(0x7f) 303 BAD_TRAP(0x80) 304 BREAKPOINT_TRAP 305 TRAP_ENTRY(0x82, do_hw_divzero) 306 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85) 307 BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88) 308 BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) 309 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f) 310 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) 311 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) 312 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) 313 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP 314 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 315 BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 316 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 317 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 318 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 319 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 320 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 321 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 322 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 323 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 324 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 325 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 326 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 327 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 328 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 329 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 330 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 331 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 332 BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff) 333 334 trapbase_cpu3: 335 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction) 336 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler) 337 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler) 338 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT 339 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint) 340 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 341 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2) 342 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4) 343 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6) 344 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8) 345 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10) 346 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12) 347 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14) 348 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 349 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22) 350 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush) 351 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception) 352 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c) 353 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 354 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 355 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 356 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) 357 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) 358 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) 359 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) 360 BAD_TRAP(0x50) 361 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 362 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 363 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 364 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 365 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 366 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 367 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 368 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 369 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 370 BAD_TRAP(0x7e) BAD_TRAP(0x7f) 371 BAD_TRAP(0x80) 372 BREAKPOINT_TRAP 373 TRAP_ENTRY(0x82, do_hw_divzero) 374 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85) 375 BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88) 376 BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) 377 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f) 378 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) 379 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) 380 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) 381 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP 382 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 383 BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 384 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 385 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 386 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 387 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 388 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 389 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 390 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 391 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 392 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 393 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 394 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 395 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 396 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 397 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 398 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 399 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 400 BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff) 401 402 #endif 403 .align PAGE_SIZE 404 405 /* This was the only reasonable way I could think of to properly align 406 * these page-table data structures. 407 */ 408 .globl pg0, pg1, pg2, pg3 409 .globl empty_bad_page 410 .globl empty_bad_page_table 411 .globl empty_zero_page 412 .globl swapper_pg_dir 413 swapper_pg_dir: .skip PAGE_SIZE 414 pg0: .skip PAGE_SIZE 415 pg1: .skip PAGE_SIZE 416 pg2: .skip PAGE_SIZE 417 pg3: .skip PAGE_SIZE 418 empty_bad_page: .skip PAGE_SIZE 419 empty_bad_page_table: .skip PAGE_SIZE 420 empty_zero_page: .skip PAGE_SIZE 421 422 .global root_flags 423 .global ram_flags 424 .global root_dev 425 .global sparc_ramdisk_image 426 .global sparc_ramdisk_size 427 428 /* This stuff has to be in sync with SILO and other potential boot loaders 429 * Fields should be kept upward compatible and whenever any change is made, 430 * HdrS version should be incremented. 431 */ 432 .ascii "HdrS" 433 .word LINUX_VERSION_CODE 434 .half 0x0203 /* HdrS version */ 435 root_flags: 436 .half 1 437 root_dev: 438 .half 0 439 ram_flags: 440 .half 0 441 sparc_ramdisk_image: 442 .word 0 443 sparc_ramdisk_size: 444 .word 0 445 .word reboot_command 446 .word 0, 0, 0 447 .word _end 448 449 /* Cool, here we go. Pick up the romvec pointer in %o0 and stash it in 450 * %g7 and at prom_vector_p. And also quickly check whether we are on 451 * a v0, v2, or v3 prom. 452 */ 453 gokernel: 454 /* Ok, it's nice to know, as early as possible, if we 455 * are already mapped where we expect to be in virtual 456 * memory. The Solaris /boot elf format bootloader 457 * will peek into our elf header and load us where 458 * we want to be, otherwise we have to re-map. 459 * 460 * Some boot loaders don't place the jmp'rs address 461 * in %o7, so we do a pc-relative call to a local 462 * label, then see what %o7 has. 463 */ 464 465 mov %o7, %g4 ! Save %o7 466 467 /* Jump to it, and pray... */ 468 current_pc: 469 call 1f 470 nop 471 472 1: 473 mov %o7, %g3 474 475 tst %o0 476 be no_sun4u_here 477 mov %g4, %o7 /* Previous %o7. */ 478 479 mov %o0, %l0 ! stash away romvec 480 mov %o0, %g7 ! put it here too 481 mov %o1, %l1 ! stash away debug_vec too 482 483 /* Ok, let's check out our run time program counter. */ 484 set current_pc, %g5 485 cmp %g3, %g5 486 be already_mapped 487 nop 488 489 /* %l6 will hold the offset we have to subtract 490 * from absolute symbols in order to access areas 491 * in our own image. If already mapped this is 492 * just plain zero, else it is KERNBASE. 493 */ 494 set KERNBASE, %l6 495 b copy_prom_lvl14 496 nop 497 498 already_mapped: 499 mov 0, %l6 500 501 /* Copy over the Prom's level 14 clock handler. */ 502 copy_prom_lvl14: 503 #if 1 504 /* DJHR 505 * preserve our linked/calculated instructions 506 */ 507 set lvl14_save, %g1 508 set t_irq14, %g3 509 sub %g1, %l6, %g1 ! translate to physical 510 sub %g3, %l6, %g3 ! translate to physical 511 ldd [%g3], %g4 512 std %g4, [%g1] 513 ldd [%g3+8], %g4 514 std %g4, [%g1+8] 515 #endif 516 rd %tbr, %g1 517 andn %g1, 0xfff, %g1 ! proms trap table base 518 or %g0, (0x1e<<4), %g2 ! offset to lvl14 intr 519 or %g1, %g2, %g2 520 set t_irq14, %g3 521 sub %g3, %l6, %g3 522 ldd [%g2], %g4 523 std %g4, [%g3] 524 ldd [%g2 + 0x8], %g4 525 std %g4, [%g3 + 0x8] ! Copy proms handler 526 527 /* Must determine whether we are on a sun4c MMU, SRMMU, or SUN4/400 MUTANT 528 * MMU so we can remap ourselves properly. DON'T TOUCH %l0 thru %l5 in these 529 * remapping routines, we need their values afterwards! 530 */ 531 /* Now check whether we are already mapped, if we 532 * are we can skip all this garbage coming up. 533 */ 534 copy_prom_done: 535 cmp %l6, 0 536 be go_to_highmem ! this will be a nop then 537 nop 538 539 set LOAD_ADDR, %g6 540 cmp %g7, %g6 541 bne remap_not_a_sun4 ! This is not a Sun4 542 nop 543 544 or %g0, 0x1, %g1 545 lduba [%g1] ASI_CONTROL, %g1 ! Only safe to try on Sun4. 546 subcc %g1, 0x24, %g0 ! Is this a mutant Sun4/400??? 547 be sun4_mutant_remap ! Ugh, it is... 548 nop 549 550 b sun4_normal_remap ! regular sun4, 2 level mmu 551 nop 552 553 remap_not_a_sun4: 554 lda [%g0] ASI_M_MMUREGS, %g1 ! same as ASI_PTE on sun4c 555 and %g1, 0x1, %g1 ! Test SRMMU Enable bit ;-) 556 cmp %g1, 0x0 557 be sun4c_remap ! A sun4c MMU or normal Sun4 558 nop 559 srmmu_remap: 560 /* First, check for a viking (TI) module. */ 561 set 0x40000000, %g2 562 rd %psr, %g3 563 and %g2, %g3, %g3 564 subcc %g3, 0x0, %g0 565 bz srmmu_nviking 566 nop 567 568 /* Figure out what kind of viking we are on. 569 * We need to know if we have to play with the 570 * AC bit and disable traps or not. 571 */ 572 573 /* I've only seen MicroSparc's on SparcClassics with this 574 * bit set. 575 */ 576 set 0x800, %g2 577 lda [%g0] ASI_M_MMUREGS, %g3 ! peek in the control reg 578 and %g2, %g3, %g3 579 subcc %g3, 0x0, %g0 580 bnz srmmu_nviking ! is in mbus mode 581 nop 582 583 rd %psr, %g3 ! DO NOT TOUCH %g3 584 andn %g3, PSR_ET, %g2 585 wr %g2, 0x0, %psr 586 WRITE_PAUSE 587 588 /* Get context table pointer, then convert to 589 * a physical address, which is 36 bits. 590 */ 591 set AC_M_CTPR, %g4 592 lda [%g4] ASI_M_MMUREGS, %g4 593 sll %g4, 0x4, %g4 ! We use this below 594 ! DO NOT TOUCH %g4 595 596 /* Set the AC bit in the Viking's MMU control reg. */ 597 lda [%g0] ASI_M_MMUREGS, %g5 ! DO NOT TOUCH %g5 598 set 0x8000, %g6 ! AC bit mask 599 or %g5, %g6, %g6 ! Or it in... 600 sta %g6, [%g0] ASI_M_MMUREGS ! Close your eyes... 601 602 /* Grrr, why does it seem like every other load/store 603 * on the sun4m is in some ASI space... 604 * Fine with me, let's get the pointer to the level 1 605 * page table directory and fetch its entry. 606 */ 607 lda [%g4] ASI_M_BYPASS, %o1 ! This is a level 1 ptr 608 srl %o1, 0x4, %o1 ! Clear low 4 bits 609 sll %o1, 0x8, %o1 ! Make physical 610 611 /* Ok, pull in the PTD. */ 612 lda [%o1] ASI_M_BYPASS, %o2 ! This is the 0x0 16MB pgd 613 614 /* Calculate to KERNBASE entry. */ 615 add %o1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %o3 616 617 /* Poke the entry into the calculated address. */ 618 sta %o2, [%o3] ASI_M_BYPASS 619 620 /* I don't get it Sun, if you engineered all these 621 * boot loaders and the PROM (thank you for the debugging 622 * features btw) why did you not have them load kernel 623 * images up in high address space, since this is necessary 624 * for ABI compliance anyways? Does this low-mapping provide 625 * enhanced interoperability? 626 * 627 * "The PROM is the computer." 628 */ 629 630 /* Ok, restore the MMU control register we saved in %g5 */ 631 sta %g5, [%g0] ASI_M_MMUREGS ! POW... ouch 632 633 /* Turn traps back on. We saved it in %g3 earlier. */ 634 wr %g3, 0x0, %psr ! tick tock, tick tock 635 636 /* Now we burn precious CPU cycles due to bad engineering. */ 637 WRITE_PAUSE 638 639 /* Wow, all that just to move a 32-bit value from one 640 * place to another... Jump to high memory. 641 */ 642 b go_to_highmem 643 nop 644 645 /* This works on viking's in Mbus mode and all 646 * other MBUS modules. It is virtually the same as 647 * the above madness sans turning traps off and flipping 648 * the AC bit. 649 */ 650 srmmu_nviking: 651 set AC_M_CTPR, %g1 652 lda [%g1] ASI_M_MMUREGS, %g1 ! get ctx table ptr 653 sll %g1, 0x4, %g1 ! make physical addr 654 lda [%g1] ASI_M_BYPASS, %g1 ! ptr to level 1 pg_table 655 srl %g1, 0x4, %g1 656 sll %g1, 0x8, %g1 ! make phys addr for l1 tbl 657 658 lda [%g1] ASI_M_BYPASS, %g2 ! get level1 entry for 0x0 659 add %g1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %g3 660 sta %g2, [%g3] ASI_M_BYPASS ! place at KERNBASE entry 661 b go_to_highmem 662 nop ! wheee.... 663 664 /* This remaps the kernel on Sun4/4xx machines 665 * that have the Sun Mutant Three Level MMU. 666 * It's like a platypus, Sun didn't have the 667 * SRMMU in conception so they kludged the three 668 * level logic in the regular Sun4 MMU probably. 669 * 670 * Basically, you take each entry in the top level 671 * directory that maps the low 3MB starting at 672 * address zero and put the mapping in the KERNBASE 673 * slots. These top level pgd's are called regmaps. 674 */ 675 sun4_mutant_remap: 676 or %g0, %g0, %g3 ! source base 677 sethi %hi(KERNBASE), %g4 ! destination base 678 or %g4, %lo(KERNBASE), %g4 679 sethi %hi(0x300000), %g5 680 or %g5, %lo(0x300000), %g5 ! upper bound 3MB 681 or %g0, 0x1, %l6 682 sll %l6, 24, %l6 ! Regmap mapping size 683 add %g3, 0x2, %g3 ! Base magic 684 add %g4, 0x2, %g4 ! Base magic 685 686 /* Main remapping loop on Sun4-Mutant-MMU. 687 * "I am not an animal..." -Famous Mutant Person 688 */ 689 sun4_mutant_loop: 690 lduha [%g3] ASI_REGMAP, %g2 ! Get lower entry 691 stha %g2, [%g4] ASI_REGMAP ! Store in high entry 692 add %g4, %l6, %g4 ! Move up high memory ptr 693 subcc %g3, %g5, %g0 ! Reached our limit? 694 blu sun4_mutant_loop ! Nope, loop again 695 add %g3, %l6, %g3 ! delay, Move up low ptr 696 b go_to_highmem ! Jump to high memory. 697 nop 698 699 /* The following is for non-4/4xx sun4 MMU's. */ 700 sun4_normal_remap: 701 mov 0, %g3 ! source base 702 set KERNBASE, %g4 ! destination base 703 set 0x300000, %g5 ! upper bound 3MB 704 mov 1, %l6 705 sll %l6, 18, %l6 ! sun4 mmu segmap size 706 sun4_normal_loop: 707 lduha [%g3] ASI_SEGMAP, %g6 ! load phys_seg 708 stha %g6, [%g4] ASI_SEGMAP ! stort new virt mapping 709 add %g3, %l6, %g3 ! increment source pointer 710 subcc %g3, %g5, %g0 ! reached limit? 711 blu sun4_normal_loop ! nope, loop again 712 add %g4, %l6, %g4 ! delay, increment dest ptr 713 b go_to_highmem 714 nop 715 716 /* The following works for Sun4c MMU's */ 717 sun4c_remap: 718 mov 0, %g3 ! source base 719 set KERNBASE, %g4 ! destination base 720 set 0x300000, %g5 ! upper bound 3MB 721 mov 1, %l6 722 sll %l6, 18, %l6 ! sun4c mmu segmap size 723 sun4c_remap_loop: 724 lda [%g3] ASI_SEGMAP, %g6 ! load phys_seg 725 sta %g6, [%g4] ASI_SEGMAP ! store new virt mapping 726 add %g3, %l6, %g3 ! Increment source ptr 727 subcc %g3, %g5, %g0 ! Reached limit? 728 bl sun4c_remap_loop ! Nope, loop again 729 add %g4, %l6, %g4 ! delay, Increment dest ptr 730 731 /* Now do a non-relative jump so that PC is in high-memory */ 732 go_to_highmem: 733 set execute_in_high_mem, %g1 734 jmpl %g1, %g0 735 nop 736 737 /* The code above should be at beginning and we have to take care about 738 * short jumps, as branching to .text.init section from .text is usually 739 * impossible */ 740 __INIT 741 /* Acquire boot time privileged register values, this will help debugging. 742 * I figure out and store nwindows and nwindowsm1 later on. 743 */ 744 execute_in_high_mem: 745 mov %l0, %o0 ! put back romvec 746 mov %l1, %o1 ! and debug_vec 747 748 sethi %hi(prom_vector_p), %g1 749 st %o0, [%g1 + %lo(prom_vector_p)] 750 751 sethi %hi(linux_dbvec), %g1 752 st %o1, [%g1 + %lo(linux_dbvec)] 753 754 ld [%o0 + 0x4], %o3 755 and %o3, 0x3, %o5 ! get the version 756 757 cmp %o3, 0x2 ! a v2 prom? 758 be found_version 759 nop 760 761 /* paul@sfe.com.au */ 762 cmp %o3, 0x3 ! a v3 prom? 763 be found_version 764 nop 765 766 /* Old sun4's pass our load address into %o0 instead of the prom 767 * pointer. On sun4's you have to hard code the romvec pointer into 768 * your code. Sun probably still does that because they don't even 769 * trust their own "OpenBoot" specifications. 770 */ 771 set LOAD_ADDR, %g6 772 cmp %o0, %g6 ! an old sun4? 773 be sun4_init 774 nop 775 776 found_version: 777 /* Get the machine type via the mysterious romvec node operations. */ 778 779 add %g7, 0x1c, %l1 780 ld [%l1], %l0 781 ld [%l0], %l0 782 call %l0 783 or %g0, %g0, %o0 ! next_node(0) = first_node 784 or %o0, %g0, %g6 785 786 sethi %hi(cputypvar), %o1 ! First node has cpu-arch 787 or %o1, %lo(cputypvar), %o1 788 sethi %hi(cputypval), %o2 ! information, the string 789 or %o2, %lo(cputypval), %o2 790 ld [%l1], %l0 ! 'compatibility' tells 791 ld [%l0 + 0xc], %l0 ! that we want 'sun4x' where 792 call %l0 ! x is one of '', 'c', 'm', 793 nop ! 'd' or 'e'. %o2 holds pointer 794 ! to a buf where above string 795 ! will get stored by the prom. 796 797 subcc %o0, %g0, %g0 798 bpos got_prop ! Got the property 799 nop 800 801 or %g6, %g0, %o0 802 sethi %hi(cputypvar_sun4m), %o1 803 or %o1, %lo(cputypvar_sun4m), %o1 804 sethi %hi(cputypval), %o2 805 or %o2, %lo(cputypval), %o2 806 ld [%l1], %l0 807 ld [%l0 + 0xc], %l0 808 call %l0 809 nop 810 811 got_prop: 812 set cputypval, %o2 813 ldub [%o2 + 0x4], %l1 814 815 cmp %l1, ' ' 816 be 1f 817 cmp %l1, 'c' 818 be 1f 819 cmp %l1, 'm' 820 be 1f 821 cmp %l1, 's' 822 be 1f 823 cmp %l1, 'd' 824 be 1f 825 cmp %l1, 'e' 826 be no_sun4e_here ! Could be a sun4e. 827 nop 828 b no_sun4u_here ! AIEEE, a V9 sun4u... Get our BIG BROTHER kernel :)) 829 nop 830 831 1: set cputypval, %l1 832 ldub [%l1 + 0x4], %l1 833 cmp %l1, 'm' ! Test for sun4d, sun4e ? 834 be sun4m_init 835 cmp %l1, 's' ! Treat sun4s as sun4m 836 be sun4m_init 837 cmp %l1, 'd' ! Let us see how the beast will die 838 be sun4d_init 839 nop 840 841 /* Jump into mmu context zero. */ 842 set AC_CONTEXT, %g1 843 stba %g0, [%g1] ASI_CONTROL 844 845 b sun4c_continue_boot 846 nop 847 848 /* CPUID in bootbus can be found at PA 0xff0140000 */ 849 #define SUN4D_BOOTBUS_CPUID 0xf0140000 850 851 sun4d_init: 852 /* Need to patch call to handler_irq */ 853 set patch_handler_irq, %g4 854 set sun4d_handler_irq, %g5 855 sethi %hi(0x40000000), %g3 ! call 856 sub %g5, %g4, %g5 857 srl %g5, 2, %g5 858 or %g5, %g3, %g5 859 st %g5, [%g4] 860 861 #ifdef CONFIG_SMP 862 /* Get our CPU id out of bootbus */ 863 set SUN4D_BOOTBUS_CPUID, %g3 864 lduba [%g3] ASI_M_CTL, %g3 865 and %g3, 0xf8, %g3 866 srl %g3, 3, %g4 867 sta %g4, [%g0] ASI_M_VIKING_TMP1 868 sethi %hi(boot_cpu_id), %g5 869 stb %g4, [%g5 + %lo(boot_cpu_id)] 870 sll %g4, 2, %g4 871 sethi %hi(boot_cpu_id4), %g5 872 stb %g4, [%g5 + %lo(boot_cpu_id4)] 873 #endif 874 875 /* Fall through to sun4m_init */ 876 877 sun4m_init: 878 /* XXX Fucking Cypress... */ 879 lda [%g0] ASI_M_MMUREGS, %g5 880 srl %g5, 28, %g4 881 882 cmp %g4, 1 883 bne 1f 884 srl %g5, 24, %g4 885 886 and %g4, 0xf, %g4 887 cmp %g4, 7 /* This would be a HyperSparc. */ 888 889 bne 2f 890 nop 891 892 1: 893 894 #define PATCH_IT(dst, src) \ 895 set (dst), %g5; \ 896 set (src), %g4; \ 897 ld [%g4], %g3; \ 898 st %g3, [%g5]; \ 899 ld [%g4+0x4], %g3; \ 900 st %g3, [%g5+0x4]; 901 902 /* Signed multiply. */ 903 PATCH_IT(.mul, .mul_patch) 904 PATCH_IT(.mul+0x08, .mul_patch+0x08) 905 906 /* Signed remainder. */ 907 PATCH_IT(.rem, .rem_patch) 908 PATCH_IT(.rem+0x08, .rem_patch+0x08) 909 PATCH_IT(.rem+0x10, .rem_patch+0x10) 910 PATCH_IT(.rem+0x18, .rem_patch+0x18) 911 PATCH_IT(.rem+0x20, .rem_patch+0x20) 912 PATCH_IT(.rem+0x28, .rem_patch+0x28) 913 914 /* Signed division. */ 915 PATCH_IT(.div, .div_patch) 916 PATCH_IT(.div+0x08, .div_patch+0x08) 917 PATCH_IT(.div+0x10, .div_patch+0x10) 918 PATCH_IT(.div+0x18, .div_patch+0x18) 919 PATCH_IT(.div+0x20, .div_patch+0x20) 920 921 /* Unsigned multiply. */ 922 PATCH_IT(.umul, .umul_patch) 923 PATCH_IT(.umul+0x08, .umul_patch+0x08) 924 925 /* Unsigned remainder. */ 926 PATCH_IT(.urem, .urem_patch) 927 PATCH_IT(.urem+0x08, .urem_patch+0x08) 928 PATCH_IT(.urem+0x10, .urem_patch+0x10) 929 PATCH_IT(.urem+0x18, .urem_patch+0x18) 930 931 /* Unsigned division. */ 932 PATCH_IT(.udiv, .udiv_patch) 933 PATCH_IT(.udiv+0x08, .udiv_patch+0x08) 934 PATCH_IT(.udiv+0x10, .udiv_patch+0x10) 935 936 #undef PATCH_IT 937 938 /* Ok, the PROM could have done funny things and apple cider could still 939 * be sitting in the fault status/address registers. Read them all to 940 * clear them so we don't get magic faults later on. 941 */ 942 /* This sucks, apparently this makes Vikings call prom panic, will fix later */ 943 2: 944 rd %psr, %o1 945 srl %o1, 28, %o1 ! Get a type of the CPU 946 947 subcc %o1, 4, %g0 ! TI: Viking or MicroSPARC 948 be sun4c_continue_boot 949 nop 950 951 set AC_M_SFSR, %o0 952 lda [%o0] ASI_M_MMUREGS, %g0 953 set AC_M_SFAR, %o0 954 lda [%o0] ASI_M_MMUREGS, %g0 955 956 /* Fujitsu MicroSPARC-II has no asynchronous flavors of FARs */ 957 subcc %o1, 0, %g0 958 be sun4c_continue_boot 959 nop 960 961 set AC_M_AFSR, %o0 962 lda [%o0] ASI_M_MMUREGS, %g0 963 set AC_M_AFAR, %o0 964 lda [%o0] ASI_M_MMUREGS, %g0 965 nop 966 967 968 sun4c_continue_boot: 969 970 971 /* Aieee, now set PC and nPC, enable traps, give ourselves a stack and it's 972 * show-time! 973 */ 974 975 sethi %hi(cputyp), %o0 976 st %g4, [%o0 + %lo(cputyp)] 977 978 /* Turn on Supervisor, EnableFloating, and all the PIL bits. 979 * Also puts us in register window zero with traps off. 980 */ 981 set (PSR_PS | PSR_S | PSR_PIL | PSR_EF), %g2 982 wr %g2, 0x0, %psr 983 WRITE_PAUSE 984 985 /* I want a kernel stack NOW! */ 986 set init_thread_union, %g1 987 set (THREAD_SIZE - STACKFRAME_SZ), %g2 988 add %g1, %g2, %sp 989 mov 0, %fp /* And for good luck */ 990 991 /* Zero out our BSS section. */ 992 set __bss_start , %o0 ! First address of BSS 993 set end , %o1 ! Last address of BSS 994 add %o0, 0x1, %o0 995 1: 996 stb %g0, [%o0] 997 subcc %o0, %o1, %g0 998 bl 1b 999 add %o0, 0x1, %o0 1000 1001 /* Initialize the uwinmask value for init task just in case. 1002 * But first make current_set[boot_cpu_id] point to something useful. 1003 */ 1004 set init_thread_union, %g6 1005 set current_set, %g2 1006 #ifdef CONFIG_SMP 1007 sethi %hi(boot_cpu_id4), %g3 1008 ldub [%g3 + %lo(boot_cpu_id4)], %g3 1009 st %g6, [%g2] 1010 add %g2, %g3, %g2 1011 #endif 1012 st %g6, [%g2] 1013 1014 st %g0, [%g6 + TI_UWINMASK] 1015 1016 /* Compute NWINDOWS and stash it away. Now uses %wim trick explained 1017 * in the V8 manual. Ok, this method seems to work, Sparc is cool... 1018 * No, it doesn't work, have to play the save/readCWP/restore trick. 1019 */ 1020 1021 wr %g0, 0x0, %wim ! so we do not get a trap 1022 WRITE_PAUSE 1023 1024 save 1025 1026 rd %psr, %g3 1027 1028 restore 1029 1030 and %g3, 0x1f, %g3 1031 add %g3, 0x1, %g3 1032 1033 mov 2, %g1 1034 wr %g1, 0x0, %wim ! make window 1 invalid 1035 WRITE_PAUSE 1036 1037 cmp %g3, 0x7 1038 bne 2f 1039 nop 1040 1041 /* Adjust our window handling routines to 1042 * do things correctly on 7 window Sparcs. 1043 */ 1044 1045 #define PATCH_INSN(src, dest) \ 1046 set src, %g5; \ 1047 set dest, %g2; \ 1048 ld [%g5], %g4; \ 1049 st %g4, [%g2]; 1050 1051 /* Patch for window spills... */ 1052 PATCH_INSN(spnwin_patch1_7win, spnwin_patch1) 1053 PATCH_INSN(spnwin_patch2_7win, spnwin_patch2) 1054 PATCH_INSN(spnwin_patch3_7win, spnwin_patch3) 1055 1056 /* Patch for window fills... */ 1057 PATCH_INSN(fnwin_patch1_7win, fnwin_patch1) 1058 PATCH_INSN(fnwin_patch2_7win, fnwin_patch2) 1059 1060 /* Patch for trap entry setup... */ 1061 PATCH_INSN(tsetup_7win_patch1, tsetup_patch1) 1062 PATCH_INSN(tsetup_7win_patch2, tsetup_patch2) 1063 PATCH_INSN(tsetup_7win_patch3, tsetup_patch3) 1064 PATCH_INSN(tsetup_7win_patch4, tsetup_patch4) 1065 PATCH_INSN(tsetup_7win_patch5, tsetup_patch5) 1066 PATCH_INSN(tsetup_7win_patch6, tsetup_patch6) 1067 1068 /* Patch for returning from traps... */ 1069 PATCH_INSN(rtrap_7win_patch1, rtrap_patch1) 1070 PATCH_INSN(rtrap_7win_patch2, rtrap_patch2) 1071 PATCH_INSN(rtrap_7win_patch3, rtrap_patch3) 1072 PATCH_INSN(rtrap_7win_patch4, rtrap_patch4) 1073 PATCH_INSN(rtrap_7win_patch5, rtrap_patch5) 1074 1075 /* Patch for killing user windows from the register file. */ 1076 PATCH_INSN(kuw_patch1_7win, kuw_patch1) 1077 1078 /* Now patch the kernel window flush sequences. 1079 * This saves 2 traps on every switch and fork. 1080 */ 1081 set 0x01000000, %g4 1082 set flush_patch_one, %g5 1083 st %g4, [%g5 + 0x18] 1084 st %g4, [%g5 + 0x1c] 1085 set flush_patch_two, %g5 1086 st %g4, [%g5 + 0x18] 1087 st %g4, [%g5 + 0x1c] 1088 set flush_patch_three, %g5 1089 st %g4, [%g5 + 0x18] 1090 st %g4, [%g5 + 0x1c] 1091 set flush_patch_four, %g5 1092 st %g4, [%g5 + 0x18] 1093 st %g4, [%g5 + 0x1c] 1094 set flush_patch_exception, %g5 1095 st %g4, [%g5 + 0x18] 1096 st %g4, [%g5 + 0x1c] 1097 set flush_patch_switch, %g5 1098 st %g4, [%g5 + 0x18] 1099 st %g4, [%g5 + 0x1c] 1100 1101 2: 1102 sethi %hi(nwindows), %g4 1103 st %g3, [%g4 + %lo(nwindows)] ! store final value 1104 sub %g3, 0x1, %g3 1105 sethi %hi(nwindowsm1), %g4 1106 st %g3, [%g4 + %lo(nwindowsm1)] 1107 1108 /* Here we go, start using Linux's trap table... */ 1109 set trapbase, %g3 1110 wr %g3, 0x0, %tbr 1111 WRITE_PAUSE 1112 1113 /* Finally, turn on traps so that we can call c-code. */ 1114 rd %psr, %g3 1115 wr %g3, 0x0, %psr 1116 WRITE_PAUSE 1117 1118 wr %g3, PSR_ET, %psr 1119 WRITE_PAUSE 1120 1121 /* First we call prom_init() to set up PROMLIB, then 1122 * off to start_kernel(). 1123 */ 1124 1125 sethi %hi(prom_vector_p), %g5 1126 ld [%g5 + %lo(prom_vector_p)], %o0 1127 call prom_init 1128 nop 1129 1130 call start_kernel 1131 nop 1132 1133 /* We should not get here. */ 1134 call halt_me 1135 nop 1136 1137 sun4_init: 1138 sethi %hi(SUN4_PROM_VECTOR+0x84), %o1 1139 ld [%o1 + %lo(SUN4_PROM_VECTOR+0x84)], %o1 1140 set sun4_notsup, %o0 1141 call %o1 /* printf */ 1142 nop 1143 sethi %hi(SUN4_PROM_VECTOR+0xc4), %o1 1144 ld [%o1 + %lo(SUN4_PROM_VECTOR+0xc4)], %o1 1145 call %o1 /* exittomon */ 1146 nop 1147 1: ba 1b ! Cannot exit into KMON 1148 nop 1149 1150 no_sun4e_here: 1151 ld [%g7 + 0x68], %o1 1152 set sun4e_notsup, %o0 1153 call %o1 1154 nop 1155 b halt_me 1156 nop 1157 1158 __INITDATA 1159 1160 sun4u_1: 1161 .asciz "finddevice" 1162 .align 4 1163 sun4u_2: 1164 .asciz "/chosen" 1165 .align 4 1166 sun4u_3: 1167 .asciz "getprop" 1168 .align 4 1169 sun4u_4: 1170 .asciz "stdout" 1171 .align 4 1172 sun4u_5: 1173 .asciz "write" 1174 .align 4 1175 sun4u_6: 1176 .asciz "\n\rOn sun4u you have to use UltraLinux (64bit) kernel\n\rand not a 32bit sun4[cdem] version\n\r\n\r" 1177 sun4u_6e: 1178 .align 4 1179 sun4u_7: 1180 .asciz "exit" 1181 .align 8 1182 sun4u_a1: 1183 .word 0, sun4u_1, 0, 1, 0, 1, 0, sun4u_2, 0 1184 sun4u_r1: 1185 .word 0 1186 sun4u_a2: 1187 .word 0, sun4u_3, 0, 4, 0, 1, 0 1188 sun4u_i2: 1189 .word 0, 0, sun4u_4, 0, sun4u_1, 0, 8, 0 1190 sun4u_r2: 1191 .word 0 1192 sun4u_a3: 1193 .word 0, sun4u_5, 0, 3, 0, 1, 0 1194 sun4u_i3: 1195 .word 0, 0, sun4u_6, 0, sun4u_6e - sun4u_6 - 1, 0 1196 sun4u_r3: 1197 .word 0 1198 sun4u_a4: 1199 .word 0, sun4u_7, 0, 0, 0, 0 1200 sun4u_r4: 1201 1202 __INIT 1203 no_sun4u_here: 1204 set sun4u_a1, %o0 1205 set current_pc, %l2 1206 cmp %l2, %g3 1207 be 1f 1208 mov %o4, %l0 1209 sub %g3, %l2, %l6 1210 add %o0, %l6, %o0 1211 mov %o0, %l4 1212 mov sun4u_r4 - sun4u_a1, %l3 1213 ld [%l4], %l5 1214 2: 1215 add %l4, 4, %l4 1216 cmp %l5, %l2 1217 add %l5, %l6, %l5 1218 bgeu,a 3f 1219 st %l5, [%l4 - 4] 1220 3: 1221 subcc %l3, 4, %l3 1222 bne 2b 1223 ld [%l4], %l5 1224 1: 1225 call %l0 1226 mov %o0, %l1 1227 1228 ld [%l1 + (sun4u_r1 - sun4u_a1)], %o1 1229 add %l1, (sun4u_a2 - sun4u_a1), %o0 1230 call %l0 1231 st %o1, [%o0 + (sun4u_i2 - sun4u_a2)] 1232 1233 ld [%l1 + (sun4u_1 - sun4u_a1)], %o1 1234 add %l1, (sun4u_a3 - sun4u_a1), %o0 1235 call %l0 1236 st %o1, [%o0 + (sun4u_i3 - sun4u_a3)] 1237 1238 call %l0 1239 add %l1, (sun4u_a4 - sun4u_a1), %o0 1240 1241 /* Not reached */ 1242 halt_me: 1243 ld [%g7 + 0x74], %o0 1244 call %o0 ! Get us out of here... 1245 nop ! Apparently Solaris is better. 1246 1247 /* Ok, now we continue in the .data/.text sections */ 1248 1249 .data 1250 .align 4 1251 1252 /* 1253 * Fill up the prom vector, note in particular the kind first element, 1254 * no joke. I don't need all of them in here as the entire prom vector 1255 * gets initialized in c-code so all routines can use it. 1256 */ 1257 1258 prom_vector_p: 1259 .word 0 1260 1261 /* We calculate the following at boot time, window fills/spills and trap entry 1262 * code uses these to keep track of the register windows. 1263 */ 1264 1265 .align 4 1266 .globl nwindows 1267 .globl nwindowsm1 1268 nwindows: 1269 .word 8 1270 nwindowsm1: 1271 .word 7 1272 1273 /* Boot time debugger vector value. We need this later on. */ 1274 1275 .align 4 1276 .globl linux_dbvec 1277 linux_dbvec: 1278 .word 0 1279 .word 0 1280 1281 .align 8 1282 1283 .globl lvl14_save 1284 lvl14_save: 1285 .word 0 1286 .word 0 1287 .word 0 1288 .word 0 1289 .word t_irq14 1290 1291 .section ".fixup",#alloc,#execinstr 1292 .globl __ret_efault 1293 __ret_efault: 1294 ret 1295 restore %g0, -EFAULT, %o0
Cache object: 3892180fbfcaa64d025c16e46d64ac49
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