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 35cputyp: 36 .word 1 37 38 .align 4 39 .globl cputypval 40cputypval: 41 .asciz "sun4c" 42 .ascii " " 43 44cputypvalend: 45cputypvallen = cputypvar - cputypval 46 47 .align 4 48/* 49 * Sun people can't spell worth damn. "compatability" indeed. 50 * At least we *know* we can't spell, and use a spell-checker. 51 */ 52 53/* Uh, actually Linus it is I who cannot spell. Too much murky 54 * Sparc assembly will do this to ya. 55 */ 56cputypvar: 57 .asciz "compatability" 58 59/* Tested on SS-5, SS-10. Probably someone at Sun applied a spell-checker. */ 60 .align 4 61cputypvar_sun4m: 62 .asciz "compatible" 63 64 .align 4 65 66sun4_notsup: 67 .asciz "Sparc-Linux sun4 support does no longer exist.\n\n" 68 .align 4 69 70sun4e_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 __HEAD 76 .globl _stext, _start, __stext 77 .globl trapbase 78_start: /* danger danger */ 79__stext: 80_stext: 81trapbase: 82#ifdef CONFIG_SMP 83trapbase_cpu0: 84#endif 85/* We get control passed to us here at t_zero. */ 86t_zero: b gokernel; nop; nop; nop; 87t_tflt: SPARC_TFAULT /* Inst. Access Exception */ 88t_bins: TRAP_ENTRY(0x2, bad_instruction) /* Illegal Instruction */ 89t_pins: TRAP_ENTRY(0x3, priv_instruction) /* Privileged Instruction */ 90t_fpd: TRAP_ENTRY(0x4, fpd_trap_handler) /* Floating Point Disabled */ 91t_wovf: WINDOW_SPILL /* Window Overflow */ 92t_wunf: WINDOW_FILL /* Window Underflow */ 93t_mna: TRAP_ENTRY(0x7, mna_handler) /* Memory Address Not Aligned */ 94t_fpe: TRAP_ENTRY(0x8, fpe_trap_handler) /* Floating Point Exception */ 95t_dflt: SPARC_DFAULT /* Data Miss Exception */ 96t_tio: TRAP_ENTRY(0xa, do_tag_overflow) /* Tagged Instruction Ovrflw */ 97t_wpt: TRAP_ENTRY(0xb, do_watchpoint) /* Watchpoint Detected */ 98t_badc: BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 99t_irq1: TRAP_ENTRY_INTERRUPT(1) /* IRQ Software/SBUS Level 1 */ 100t_irq2: TRAP_ENTRY_INTERRUPT(2) /* IRQ SBUS Level 2 */ 101t_irq3: TRAP_ENTRY_INTERRUPT(3) /* IRQ SCSI/DMA/SBUS Level 3 */ 102t_irq4: TRAP_ENTRY_INTERRUPT(4) /* IRQ Software Level 4 */ 103t_irq5: TRAP_ENTRY_INTERRUPT(5) /* IRQ SBUS/Ethernet Level 5 */ 104t_irq6: TRAP_ENTRY_INTERRUPT(6) /* IRQ Software Level 6 */ 105t_irq7: TRAP_ENTRY_INTERRUPT(7) /* IRQ Video/SBUS Level 5 */ 106t_irq8: TRAP_ENTRY_INTERRUPT(8) /* IRQ SBUS Level 6 */ 107t_irq9: TRAP_ENTRY_INTERRUPT(9) /* IRQ SBUS Level 7 */ 108t_irq10:TRAP_ENTRY_INTERRUPT(10) /* IRQ Timer #1 (one we use) */ 109t_irq11:TRAP_ENTRY_INTERRUPT(11) /* IRQ Floppy Intr. */ 110t_irq12:TRAP_ENTRY_INTERRUPT(12) /* IRQ Zilog serial chip */ 111t_irq13:TRAP_ENTRY_INTERRUPT(13) /* IRQ Audio Intr. */ 112t_irq14:TRAP_ENTRY_INTERRUPT(14) /* IRQ Timer #2 */ 113 .globl t_nmi 114#ifndef CONFIG_SMP 115t_nmi: NMI_TRAP /* Level 15 (NMI) */ 116#else 117t_nmi: TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 118#endif 119t_racc: TRAP_ENTRY(0x20, do_reg_access) /* General Register Access Error */ 120t_iacce:BAD_TRAP(0x21) /* Instr Access Error */ 121t_bad22:BAD_TRAP(0x22) BAD_TRAP(0x23) 122t_cpdis:TRAP_ENTRY(0x24, do_cp_disabled) /* Co-Processor Disabled */ 123t_uflsh:SKIP_TRAP(0x25, unimp_flush) /* Unimplemented FLUSH inst. */ 124t_bad26:BAD_TRAP(0x26) BAD_TRAP(0x27) 125t_cpexc:TRAP_ENTRY(0x28, do_cp_exception) /* Co-Processor Exception */ 126t_dacce:SPARC_DFAULT /* Data Access Error */ 127t_hwdz: TRAP_ENTRY(0x2a, do_hw_divzero) /* Division by zero, you lose... */ 128t_dserr:BAD_TRAP(0x2b) /* Data Store Error */ 129t_daccm:BAD_TRAP(0x2c) /* Data Access MMU-Miss */ 130t_bad2d:BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 131t_bad32:BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 132t_bad37:BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 133t_iaccm:BAD_TRAP(0x3c) /* Instr Access MMU-Miss */ 134t_bad3d:BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) BAD_TRAP(0x41) 135t_bad42:BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) BAD_TRAP(0x46) 136t_bad47:BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) BAD_TRAP(0x4b) 137t_bad4c:BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) BAD_TRAP(0x50) 138t_bad51:BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 139t_bad56:BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 140t_bad5b:BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 141t_bad60:BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 142t_bad65:BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 143t_bad6a:BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 144t_bad6f:BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 145t_bad74:BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 146t_bad79:BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 147t_bad7e:BAD_TRAP(0x7e) BAD_TRAP(0x7f) 148t_bad80:BAD_TRAP(0x80) /* SunOS System Call */ 149t_sbkpt:BREAKPOINT_TRAP /* Software Breakpoint/KGDB */ 150t_divz: TRAP_ENTRY(0x82, do_hw_divzero) /* Divide by zero trap */ 151t_flwin:TRAP_ENTRY(0x83, do_flush_windows) /* Flush Windows Trap */ 152t_clwin:BAD_TRAP(0x84) /* Clean Windows Trap */ 153t_rchk: BAD_TRAP(0x85) /* Range Check */ 154t_funal:BAD_TRAP(0x86) /* Fix Unaligned Access Trap */ 155t_iovf: BAD_TRAP(0x87) /* Integer Overflow Trap */ 156t_bad88:BAD_TRAP(0x88) /* Slowaris System Call */ 157t_bad89:BAD_TRAP(0x89) /* Net-B.S. System Call */ 158t_bad8a:BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) BAD_TRAP(0x8d) BAD_TRAP(0x8e) 159t_bad8f:BAD_TRAP(0x8f) 160t_linux:LINUX_SYSCALL_TRAP /* Linux System Call */ 161t_bad91:BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) BAD_TRAP(0x95) 162t_bad96:BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) BAD_TRAP(0x9a) 163t_bad9b:BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) BAD_TRAP(0x9f) 164t_getcc:GETCC_TRAP /* Get Condition Codes */ 165t_setcc:SETCC_TRAP /* Set Condition Codes */ 166t_getpsr:GETPSR_TRAP /* Get PSR Register */ 167t_bada3:BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 168t_bada7:BAD_TRAP(0xa7) 169t_bada8:BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 170t_badac:BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 171t_badb1:BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 172t_badb6:BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 173t_badbb:BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 174t_badc0:BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 175t_badc5:BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 176t_badca:BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 177t_badcf:BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 178t_badd4:BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 179t_badd9:BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 180t_badde:BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 181t_bade3:BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 182t_bade8:BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 183t_baded:BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 184t_badf2:BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 185t_badf7:BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 186t_badfc:BAD_TRAP(0xfc) 187t_kgdb: KGDB_TRAP(0xfd) 188dbtrap: BAD_TRAP(0xfe) /* Debugger/PROM breakpoint #1 */ 189dbtrap2:BAD_TRAP(0xff) /* Debugger/PROM breakpoint #2 */ 190 191 .globl end_traptable 192end_traptable: 193 194#ifdef CONFIG_SMP 195 /* Trap tables for the other cpus. */ 196 .globl trapbase_cpu1, trapbase_cpu2, trapbase_cpu3 197trapbase_cpu1: 198 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction) 199 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler) 200 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler) 201 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT 202 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint) 203 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 204 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2) 205 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4) 206 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6) 207 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8) 208 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10) 209 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12) 210 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14) 211 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 212 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22) 213 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush) 214 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception) 215 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c) 216 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 217 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 218 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 219 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) 220 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) 221 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) 222 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) 223 BAD_TRAP(0x50) 224 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 225 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 226 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 227 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 228 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 229 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 230 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 231 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 232 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 233 BAD_TRAP(0x7e) BAD_TRAP(0x7f) 234 BAD_TRAP(0x80) 235 BREAKPOINT_TRAP 236 TRAP_ENTRY(0x82, do_hw_divzero) 237 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85) 238 BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88) 239 BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) 240 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f) 241 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) 242 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) 243 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) 244 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP 245 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 246 BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 247 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 248 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 249 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 250 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 251 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 252 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 253 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 254 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 255 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 256 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 257 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 258 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 259 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 260 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 261 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 262 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 263 BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff) 264 265trapbase_cpu2: 266 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction) 267 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler) 268 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler) 269 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT 270 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint) 271 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 272 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2) 273 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4) 274 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6) 275 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8) 276 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10) 277 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12) 278 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14) 279 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 280 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22) 281 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush) 282 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception) 283 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c) 284 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 285 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 286 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 287 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) 288 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) 289 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) 290 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) 291 BAD_TRAP(0x50) 292 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 293 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 294 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 295 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 296 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 297 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 298 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 299 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 300 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 301 BAD_TRAP(0x7e) BAD_TRAP(0x7f) 302 BAD_TRAP(0x80) 303 BREAKPOINT_TRAP 304 TRAP_ENTRY(0x82, do_hw_divzero) 305 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85) 306 BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88) 307 BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) 308 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f) 309 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) 310 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) 311 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) 312 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP 313 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 314 BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 315 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 316 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 317 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 318 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 319 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 320 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 321 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 322 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 323 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 324 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 325 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 326 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 327 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 328 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 329 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 330 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 331 BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff) 332 333trapbase_cpu3: 334 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction) 335 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler) 336 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler) 337 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT 338 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint) 339 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 340 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2) 341 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4) 342 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6) 343 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8) 344 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10) 345 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12) 346 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14) 347 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 348 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22) 349 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush) 350 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception) 351 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c) 352 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 353 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 354 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 355 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) 356 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) 357 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) 358 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) 359 BAD_TRAP(0x50) 360 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 361 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 362 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 363 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 364 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 365 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 366 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 367 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 368 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 369 BAD_TRAP(0x7e) BAD_TRAP(0x7f) 370 BAD_TRAP(0x80) 371 BREAKPOINT_TRAP 372 TRAP_ENTRY(0x82, do_hw_divzero) 373 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85) 374 BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88) 375 BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) 376 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f) 377 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) 378 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) 379 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) 380 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP 381 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 382 BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 383 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 384 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 385 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 386 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 387 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 388 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 389 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 390 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 391 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 392 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 393 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 394 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 395 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 396 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 397 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 398 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 399 BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff) 400 401#endif 402 .align PAGE_SIZE 403 404/* This was the only reasonable way I could think of to properly align 405 * these page-table data structures. 406 */ 407 .globl pg0, pg1, pg2, pg3 408 .globl empty_bad_page 409 .globl empty_bad_page_table 410 .globl empty_zero_page 411 .globl swapper_pg_dir 412swapper_pg_dir: .skip PAGE_SIZE 413pg0: .skip PAGE_SIZE 414pg1: .skip PAGE_SIZE 415pg2: .skip PAGE_SIZE 416pg3: .skip PAGE_SIZE 417empty_bad_page: .skip PAGE_SIZE 418empty_bad_page_table: .skip PAGE_SIZE 419empty_zero_page: .skip PAGE_SIZE 420 421 .global root_flags 422 .global ram_flags 423 .global root_dev 424 .global sparc_ramdisk_image 425 .global sparc_ramdisk_size 426 427/* This stuff has to be in sync with SILO and other potential boot loaders 428 * Fields should be kept upward compatible and whenever any change is made, 429 * HdrS version should be incremented. 430 */ 431 .ascii "HdrS" 432 .word LINUX_VERSION_CODE 433 .half 0x0203 /* HdrS version */ 434root_flags: 435 .half 1 436root_dev: 437 .half 0 438ram_flags: 439 .half 0 440sparc_ramdisk_image: 441 .word 0 442sparc_ramdisk_size: 443 .word 0 444 .word reboot_command 445 .word 0, 0, 0 446 .word _end 447 448/* Cool, here we go. Pick up the romvec pointer in %o0 and stash it in 449 * %g7 and at prom_vector_p. And also quickly check whether we are on 450 * a v0, v2, or v3 prom. 451 */ 452gokernel: 453 /* Ok, it's nice to know, as early as possible, if we 454 * are already mapped where we expect to be in virtual 455 * memory. The Solaris /boot elf format bootloader 456 * will peek into our elf header and load us where 457 * we want to be, otherwise we have to re-map. 458 * 459 * Some boot loaders don't place the jmp'rs address 460 * in %o7, so we do a pc-relative call to a local 461 * label, then see what %o7 has. 462 */ 463 464 mov %o7, %g4 ! Save %o7 465 466 /* Jump to it, and pray... */ 467current_pc: 468 call 1f 469 nop 470 4711: 472 mov %o7, %g3 473 474 tst %o0 475 be no_sun4u_here 476 mov %g4, %o7 /* Previous %o7. */ 477 478 mov %o0, %l0 ! stash away romvec 479 mov %o0, %g7 ! put it here too 480 mov %o1, %l1 ! stash away debug_vec too 481 482 /* Ok, let's check out our run time program counter. */ 483 set current_pc, %g5 484 cmp %g3, %g5 485 be already_mapped 486 nop 487 488 /* %l6 will hold the offset we have to subtract 489 * from absolute symbols in order to access areas 490 * in our own image. If already mapped this is 491 * just plain zero, else it is KERNBASE. 492 */ 493 set KERNBASE, %l6 494 b copy_prom_lvl14 495 nop 496 497already_mapped: 498 mov 0, %l6 499 500 /* Copy over the Prom's level 14 clock handler. */ 501copy_prom_lvl14: 502#if 1 503 /* DJHR 504 * preserve our linked/calculated instructions 505 */ 506 set lvl14_save, %g1 507 set t_irq14, %g3 508 sub %g1, %l6, %g1 ! translate to physical 509 sub %g3, %l6, %g3 ! translate to physical 510 ldd [%g3], %g4 511 std %g4, [%g1] 512 ldd [%g3+8], %g4 513 std %g4, [%g1+8] 514#endif 515 rd %tbr, %g1 516 andn %g1, 0xfff, %g1 ! proms trap table base 517 or %g0, (0x1e<<4), %g2 ! offset to lvl14 intr 518 or %g1, %g2, %g2 519 set t_irq14, %g3 520 sub %g3, %l6, %g3 521 ldd [%g2], %g4 522 std %g4, [%g3] 523 ldd [%g2 + 0x8], %g4 524 std %g4, [%g3 + 0x8] ! Copy proms handler 525 526/* Must determine whether we are on a sun4c MMU, SRMMU, or SUN4/400 MUTANT 527 * MMU so we can remap ourselves properly. DON'T TOUCH %l0 thru %l5 in these 528 * remapping routines, we need their values afterwards! 529 */ 530 /* Now check whether we are already mapped, if we 531 * are we can skip all this garbage coming up. 532 */ 533copy_prom_done: 534 cmp %l6, 0 535 be go_to_highmem ! this will be a nop then 536 nop 537 538 set LOAD_ADDR, %g6 539 cmp %g7, %g6 540 bne remap_not_a_sun4 ! This is not a Sun4 541 nop 542 543 or %g0, 0x1, %g1 544 lduba [%g1] ASI_CONTROL, %g1 ! Only safe to try on Sun4. 545 subcc %g1, 0x24, %g0 ! Is this a mutant Sun4/400??? 546 be sun4_mutant_remap ! Ugh, it is... 547 nop 548 549 b sun4_normal_remap ! regular sun4, 2 level mmu 550 nop 551 552remap_not_a_sun4: 553 lda [%g0] ASI_M_MMUREGS, %g1 ! same as ASI_PTE on sun4c 554 and %g1, 0x1, %g1 ! Test SRMMU Enable bit ;-) 555 cmp %g1, 0x0 556 be sun4c_remap ! A sun4c MMU or normal Sun4 557 nop 558srmmu_remap: 559 /* First, check for a viking (TI) module. */ 560 set 0x40000000, %g2 561 rd %psr, %g3 562 and %g2, %g3, %g3 563 subcc %g3, 0x0, %g0 564 bz srmmu_nviking 565 nop 566 567 /* Figure out what kind of viking we are on. 568 * We need to know if we have to play with the 569 * AC bit and disable traps or not. 570 */ 571 572 /* I've only seen MicroSparc's on SparcClassics with this 573 * bit set. 574 */ 575 set 0x800, %g2 576 lda [%g0] ASI_M_MMUREGS, %g3 ! peek in the control reg 577 and %g2, %g3, %g3 578 subcc %g3, 0x0, %g0 579 bnz srmmu_nviking ! is in mbus mode 580 nop 581 582 rd %psr, %g3 ! DO NOT TOUCH %g3 583 andn %g3, PSR_ET, %g2 584 wr %g2, 0x0, %psr 585 WRITE_PAUSE 586 587 /* Get context table pointer, then convert to 588 * a physical address, which is 36 bits. 589 */ 590 set AC_M_CTPR, %g4 591 lda [%g4] ASI_M_MMUREGS, %g4 592 sll %g4, 0x4, %g4 ! We use this below 593 ! DO NOT TOUCH %g4 594 595 /* Set the AC bit in the Viking's MMU control reg. */ 596 lda [%g0] ASI_M_MMUREGS, %g5 ! DO NOT TOUCH %g5 597 set 0x8000, %g6 ! AC bit mask 598 or %g5, %g6, %g6 ! Or it in... 599 sta %g6, [%g0] ASI_M_MMUREGS ! Close your eyes... 600 601 /* Grrr, why does it seem like every other load/store 602 * on the sun4m is in some ASI space... 603 * Fine with me, let's get the pointer to the level 1 604 * page table directory and fetch its entry. 605 */ 606 lda [%g4] ASI_M_BYPASS, %o1 ! This is a level 1 ptr 607 srl %o1, 0x4, %o1 ! Clear low 4 bits 608 sll %o1, 0x8, %o1 ! Make physical 609 610 /* Ok, pull in the PTD. */ 611 lda [%o1] ASI_M_BYPASS, %o2 ! This is the 0x0 16MB pgd 612 613 /* Calculate to KERNBASE entry. */ 614 add %o1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %o3 615 616 /* Poke the entry into the calculated address. */ 617 sta %o2, [%o3] ASI_M_BYPASS 618 619 /* I don't get it Sun, if you engineered all these 620 * boot loaders and the PROM (thank you for the debugging 621 * features btw) why did you not have them load kernel 622 * images up in high address space, since this is necessary 623 * for ABI compliance anyways? Does this low-mapping provide 624 * enhanced interoperability? 625 * 626 * "The PROM is the computer." 627 */ 628 629 /* Ok, restore the MMU control register we saved in %g5 */ 630 sta %g5, [%g0] ASI_M_MMUREGS ! POW... ouch 631 632 /* Turn traps back on. We saved it in %g3 earlier. */ 633 wr %g3, 0x0, %psr ! tick tock, tick tock 634 635 /* Now we burn precious CPU cycles due to bad engineering. */ 636 WRITE_PAUSE 637 638 /* Wow, all that just to move a 32-bit value from one 639 * place to another... Jump to high memory. 640 */ 641 b go_to_highmem 642 nop 643 644 /* This works on viking's in Mbus mode and all 645 * other MBUS modules. It is virtually the same as 646 * the above madness sans turning traps off and flipping 647 * the AC bit. 648 */ 649srmmu_nviking: 650 set AC_M_CTPR, %g1 651 lda [%g1] ASI_M_MMUREGS, %g1 ! get ctx table ptr 652 sll %g1, 0x4, %g1 ! make physical addr 653 lda [%g1] ASI_M_BYPASS, %g1 ! ptr to level 1 pg_table 654 srl %g1, 0x4, %g1 655 sll %g1, 0x8, %g1 ! make phys addr for l1 tbl 656 657 lda [%g1] ASI_M_BYPASS, %g2 ! get level1 entry for 0x0 658 add %g1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %g3 659 sta %g2, [%g3] ASI_M_BYPASS ! place at KERNBASE entry 660 b go_to_highmem 661 nop ! wheee.... 662 663 /* This remaps the kernel on Sun4/4xx machines 664 * that have the Sun Mutant Three Level MMU. 665 * It's like a platypus, Sun didn't have the 666 * SRMMU in conception so they kludged the three 667 * level logic in the regular Sun4 MMU probably. 668 * 669 * Basically, you take each entry in the top level 670 * directory that maps the low 3MB starting at 671 * address zero and put the mapping in the KERNBASE 672 * slots. These top level pgd's are called regmaps. 673 */ 674sun4_mutant_remap: 675 or %g0, %g0, %g3 ! source base 676 sethi %hi(KERNBASE), %g4 ! destination base 677 or %g4, %lo(KERNBASE), %g4 678 sethi %hi(0x300000), %g5 679 or %g5, %lo(0x300000), %g5 ! upper bound 3MB 680 or %g0, 0x1, %l6 681 sll %l6, 24, %l6 ! Regmap mapping size 682 add %g3, 0x2, %g3 ! Base magic 683 add %g4, 0x2, %g4 ! Base magic 684 685 /* Main remapping loop on Sun4-Mutant-MMU. 686 * "I am not an animal..." -Famous Mutant Person 687 */ 688sun4_mutant_loop: 689 lduha [%g3] ASI_REGMAP, %g2 ! Get lower entry 690 stha %g2, [%g4] ASI_REGMAP ! Store in high entry 691 add %g4, %l6, %g4 ! Move up high memory ptr 692 subcc %g3, %g5, %g0 ! Reached our limit? 693 blu sun4_mutant_loop ! Nope, loop again 694 add %g3, %l6, %g3 ! delay, Move up low ptr 695 b go_to_highmem ! Jump to high memory. 696 nop 697 698 /* The following is for non-4/4xx sun4 MMU's. */ 699sun4_normal_remap: 700 mov 0, %g3 ! source base 701 set KERNBASE, %g4 ! destination base 702 set 0x300000, %g5 ! upper bound 3MB 703 mov 1, %l6 704 sll %l6, 18, %l6 ! sun4 mmu segmap size 705sun4_normal_loop: 706 lduha [%g3] ASI_SEGMAP, %g6 ! load phys_seg 707 stha %g6, [%g4] ASI_SEGMAP ! stort new virt mapping 708 add %g3, %l6, %g3 ! increment source pointer 709 subcc %g3, %g5, %g0 ! reached limit? 710 blu sun4_normal_loop ! nope, loop again 711 add %g4, %l6, %g4 ! delay, increment dest ptr 712 b go_to_highmem 713 nop 714 715 /* The following works for Sun4c MMU's */ 716sun4c_remap: 717 mov 0, %g3 ! source base 718 set KERNBASE, %g4 ! destination base 719 set 0x300000, %g5 ! upper bound 3MB 720 mov 1, %l6 721 sll %l6, 18, %l6 ! sun4c mmu segmap size 722sun4c_remap_loop: 723 lda [%g3] ASI_SEGMAP, %g6 ! load phys_seg 724 sta %g6, [%g4] ASI_SEGMAP ! store new virt mapping 725 add %g3, %l6, %g3 ! Increment source ptr 726 subcc %g3, %g5, %g0 ! Reached limit? 727 bl sun4c_remap_loop ! Nope, loop again 728 add %g4, %l6, %g4 ! delay, Increment dest ptr 729 730/* Now do a non-relative jump so that PC is in high-memory */ 731go_to_highmem: 732 set execute_in_high_mem, %g1 733 jmpl %g1, %g0 734 nop 735 736/* The code above should be at beginning and we have to take care about 737 * short jumps, as branching to .init.text section from .text is usually 738 * impossible */ 739 __INIT 740/* Acquire boot time privileged register values, this will help debugging. 741 * I figure out and store nwindows and nwindowsm1 later on. 742 */ 743execute_in_high_mem: 744 mov %l0, %o0 ! put back romvec 745 mov %l1, %o1 ! and debug_vec 746 747 sethi %hi(prom_vector_p), %g1 748 st %o0, [%g1 + %lo(prom_vector_p)] 749 750 sethi %hi(linux_dbvec), %g1 751 st %o1, [%g1 + %lo(linux_dbvec)] 752 753 ld [%o0 + 0x4], %o3 754 and %o3, 0x3, %o5 ! get the version 755 756 cmp %o3, 0x2 ! a v2 prom? 757 be found_version 758 nop 759 760 /* paul@sfe.com.au */ 761 cmp %o3, 0x3 ! a v3 prom? 762 be found_version 763 nop 764 765/* Old sun4's pass our load address into %o0 instead of the prom 766 * pointer. On sun4's you have to hard code the romvec pointer into 767 * your code. Sun probably still does that because they don't even 768 * trust their own "OpenBoot" specifications. 769 */ 770 set LOAD_ADDR, %g6 771 cmp %o0, %g6 ! an old sun4? 772 be sun4_init 773 nop 774 775found_version: 776/* Get the machine type via the mysterious romvec node operations. */ 777 778 add %g7, 0x1c, %l1 779 ld [%l1], %l0 780 ld [%l0], %l0 781 call %l0 782 or %g0, %g0, %o0 ! next_node(0) = first_node 783 or %o0, %g0, %g6 784 785 sethi %hi(cputypvar), %o1 ! First node has cpu-arch 786 or %o1, %lo(cputypvar), %o1 787 sethi %hi(cputypval), %o2 ! information, the string 788 or %o2, %lo(cputypval), %o2 789 ld [%l1], %l0 ! 'compatibility' tells 790 ld [%l0 + 0xc], %l0 ! that we want 'sun4x' where 791 call %l0 ! x is one of '', 'c', 'm', 792 nop ! 'd' or 'e'. %o2 holds pointer 793 ! to a buf where above string 794 ! will get stored by the prom. 795 796 subcc %o0, %g0, %g0 797 bpos got_prop ! Got the property 798 nop 799 800 or %g6, %g0, %o0 801 sethi %hi(cputypvar_sun4m), %o1 802 or %o1, %lo(cputypvar_sun4m), %o1 803 sethi %hi(cputypval), %o2 804 or %o2, %lo(cputypval), %o2 805 ld [%l1], %l0 806 ld [%l0 + 0xc], %l0 807 call %l0 808 nop 809 810got_prop: 811#ifdef CONFIG_SPARC_LEON 812 /* no cpu-type check is needed, it is a SPARC-LEON */ 813 814 sethi %hi(boot_cpu_id), %g2 ! boot-cpu index 815 816#ifdef CONFIG_SMP 817 ldub [%g2 + %lo(boot_cpu_id)], %g1 818 cmp %g1, 0xff ! unset means first CPU 819 bne leon_smp_cpu_startup ! continue only with master 820 nop 821#endif 822 /* Get CPU-ID from most significant 4-bit of ASR17 */ 823 rd %asr17, %g1 824 srl %g1, 28, %g1 825 826 /* Update boot_cpu_id only on boot cpu */ 827 stub %g1, [%g2 + %lo(boot_cpu_id)] 828 829 ba sun4c_continue_boot 830 nop 831#endif 832 set cputypval, %o2 833 ldub [%o2 + 0x4], %l1 834 835 cmp %l1, ' ' 836 be 1f 837 cmp %l1, 'c' 838 be 1f 839 cmp %l1, 'm' 840 be 1f 841 cmp %l1, 's' 842 be 1f 843 cmp %l1, 'd' 844 be 1f 845 cmp %l1, 'e' 846 be no_sun4e_here ! Could be a sun4e. 847 nop 848 b no_sun4u_here ! AIEEE, a V9 sun4u... Get our BIG BROTHER kernel :)) 849 nop 850 8511: set cputypval, %l1 852 ldub [%l1 + 0x4], %l1 853 cmp %l1, 'm' ! Test for sun4d, sun4e ? 854 be sun4m_init 855 cmp %l1, 's' ! Treat sun4s as sun4m 856 be sun4m_init 857 cmp %l1, 'd' ! Let us see how the beast will die 858 be sun4d_init 859 nop 860 861 /* Jump into mmu context zero. */ 862 set AC_CONTEXT, %g1 863 stba %g0, [%g1] ASI_CONTROL 864 865 b sun4c_continue_boot 866 nop 867 868/* CPUID in bootbus can be found at PA 0xff0140000 */ 869#define SUN4D_BOOTBUS_CPUID 0xf0140000 870 871sun4d_init: 872 /* Need to patch call to handler_irq */ 873 set patch_handler_irq, %g4 874 set sun4d_handler_irq, %g5 875 sethi %hi(0x40000000), %g3 ! call 876 sub %g5, %g4, %g5 877 srl %g5, 2, %g5 878 or %g5, %g3, %g5 879 st %g5, [%g4] 880 881#ifdef CONFIG_SMP 882 /* Get our CPU id out of bootbus */ 883 set SUN4D_BOOTBUS_CPUID, %g3 884 lduba [%g3] ASI_M_CTL, %g3 885 and %g3, 0xf8, %g3 886 srl %g3, 3, %g4 887 sta %g4, [%g0] ASI_M_VIKING_TMP1 888 sethi %hi(boot_cpu_id), %g5 889 stb %g4, [%g5 + %lo(boot_cpu_id)] 890#endif 891 892 /* Fall through to sun4m_init */ 893 894sun4m_init: 895 /* XXX Fucking Cypress... */ 896 lda [%g0] ASI_M_MMUREGS, %g5 897 srl %g5, 28, %g4 898 899 cmp %g4, 1 900 bne 1f 901 srl %g5, 24, %g4 902 903 and %g4, 0xf, %g4 904 cmp %g4, 7 /* This would be a HyperSparc. */ 905 906 bne 2f 907 nop 908 9091: 910 911#define PATCH_IT(dst, src) \ 912 set (dst), %g5; \ 913 set (src), %g4; \ 914 ld [%g4], %g3; \ 915 st %g3, [%g5]; \ 916 ld [%g4+0x4], %g3; \ 917 st %g3, [%g5+0x4]; 918 919 /* Signed multiply. */ 920 PATCH_IT(.mul, .mul_patch) 921 PATCH_IT(.mul+0x08, .mul_patch+0x08) 922 923 /* Signed remainder. */ 924 PATCH_IT(.rem, .rem_patch) 925 PATCH_IT(.rem+0x08, .rem_patch+0x08) 926 PATCH_IT(.rem+0x10, .rem_patch+0x10) 927 PATCH_IT(.rem+0x18, .rem_patch+0x18) 928 PATCH_IT(.rem+0x20, .rem_patch+0x20) 929 PATCH_IT(.rem+0x28, .rem_patch+0x28) 930 931 /* Signed division. */ 932 PATCH_IT(.div, .div_patch) 933 PATCH_IT(.div+0x08, .div_patch+0x08) 934 PATCH_IT(.div+0x10, .div_patch+0x10) 935 PATCH_IT(.div+0x18, .div_patch+0x18) 936 PATCH_IT(.div+0x20, .div_patch+0x20) 937 938 /* Unsigned multiply. */ 939 PATCH_IT(.umul, .umul_patch) 940 PATCH_IT(.umul+0x08, .umul_patch+0x08) 941 942 /* Unsigned remainder. */ 943 PATCH_IT(.urem, .urem_patch) 944 PATCH_IT(.urem+0x08, .urem_patch+0x08) 945 PATCH_IT(.urem+0x10, .urem_patch+0x10) 946 PATCH_IT(.urem+0x18, .urem_patch+0x18) 947 948 /* Unsigned division. */ 949 PATCH_IT(.udiv, .udiv_patch) 950 PATCH_IT(.udiv+0x08, .udiv_patch+0x08) 951 PATCH_IT(.udiv+0x10, .udiv_patch+0x10) 952 953#undef PATCH_IT 954 955/* Ok, the PROM could have done funny things and apple cider could still 956 * be sitting in the fault status/address registers. Read them all to 957 * clear them so we don't get magic faults later on. 958 */ 959/* This sucks, apparently this makes Vikings call prom panic, will fix later */ 9602: 961 rd %psr, %o1 962 srl %o1, 28, %o1 ! Get a type of the CPU 963 964 subcc %o1, 4, %g0 ! TI: Viking or MicroSPARC 965 be sun4c_continue_boot 966 nop 967 968 set AC_M_SFSR, %o0 969 lda [%o0] ASI_M_MMUREGS, %g0 970 set AC_M_SFAR, %o0 971 lda [%o0] ASI_M_MMUREGS, %g0 972 973 /* Fujitsu MicroSPARC-II has no asynchronous flavors of FARs */ 974 subcc %o1, 0, %g0 975 be sun4c_continue_boot 976 nop 977 978 set AC_M_AFSR, %o0 979 lda [%o0] ASI_M_MMUREGS, %g0 980 set AC_M_AFAR, %o0 981 lda [%o0] ASI_M_MMUREGS, %g0 982 nop 983 984 985sun4c_continue_boot: 986 987 988/* Aieee, now set PC and nPC, enable traps, give ourselves a stack and it's 989 * show-time! 990 */ 991 992 sethi %hi(cputyp), %o0 993 st %g4, [%o0 + %lo(cputyp)] 994 995 /* Turn on Supervisor, EnableFloating, and all the PIL bits. 996 * Also puts us in register window zero with traps off. 997 */ 998 set (PSR_PS | PSR_S | PSR_PIL | PSR_EF), %g2 999 wr %g2, 0x0, %psr 1000 WRITE_PAUSE 1001 1002 /* I want a kernel stack NOW! */ 1003 set init_thread_union, %g1 1004 set (THREAD_SIZE - STACKFRAME_SZ), %g2 1005 add %g1, %g2, %sp 1006 mov 0, %fp /* And for good luck */ 1007 1008 /* Zero out our BSS section. */ 1009 set __bss_start , %o0 ! First address of BSS 1010 set _end , %o1 ! Last address of BSS 1011 add %o0, 0x1, %o0 10121: 1013 stb %g0, [%o0] 1014 subcc %o0, %o1, %g0 1015 bl 1b 1016 add %o0, 0x1, %o0 1017 1018 /* If boot_cpu_id has not been setup by machine specific 1019 * init-code above we default it to zero. 1020 */ 1021 sethi %hi(boot_cpu_id), %g2 1022 ldub [%g2 + %lo(boot_cpu_id)], %g3 1023 cmp %g3, 0xff 1024 bne 1f 1025 nop 1026 mov %g0, %g3 1027 stub %g3, [%g2 + %lo(boot_cpu_id)] 1028 10291: /* boot_cpu_id set. calculate boot_cpu_id4 = boot_cpu_id*4 */ 1030 sll %g3, 2, %g3 1031 sethi %hi(boot_cpu_id4), %g2 1032 stub %g3, [%g2 + %lo(boot_cpu_id4)] 1033 1034 /* Initialize the uwinmask value for init task just in case. 1035 * But first make current_set[boot_cpu_id] point to something useful. 1036 */ 1037 set init_thread_union, %g6 1038 set current_set, %g2 1039#ifdef CONFIG_SMP 1040 st %g6, [%g2] 1041 add %g2, %g3, %g2 1042#endif 1043 st %g6, [%g2] 1044 1045 st %g0, [%g6 + TI_UWINMASK] 1046 1047/* Compute NWINDOWS and stash it away. Now uses %wim trick explained 1048 * in the V8 manual. Ok, this method seems to work, Sparc is cool... 1049 * No, it doesn't work, have to play the save/readCWP/restore trick. 1050 */ 1051 1052 wr %g0, 0x0, %wim ! so we do not get a trap 1053 WRITE_PAUSE 1054 1055 save 1056 1057 rd %psr, %g3 1058 1059 restore 1060 1061 and %g3, 0x1f, %g3 1062 add %g3, 0x1, %g3 1063 1064 mov 2, %g1 1065 wr %g1, 0x0, %wim ! make window 1 invalid 1066 WRITE_PAUSE 1067 1068 cmp %g3, 0x7 1069 bne 2f 1070 nop 1071 1072 /* Adjust our window handling routines to 1073 * do things correctly on 7 window Sparcs. 1074 */ 1075 1076#define PATCH_INSN(src, dest) \ 1077 set src, %g5; \ 1078 set dest, %g2; \ 1079 ld [%g5], %g4; \ 1080 st %g4, [%g2]; 1081 1082 /* Patch for window spills... */ 1083 PATCH_INSN(spnwin_patch1_7win, spnwin_patch1) 1084 PATCH_INSN(spnwin_patch2_7win, spnwin_patch2) 1085 PATCH_INSN(spnwin_patch3_7win, spnwin_patch3) 1086 1087 /* Patch for window fills... */ 1088 PATCH_INSN(fnwin_patch1_7win, fnwin_patch1) 1089 PATCH_INSN(fnwin_patch2_7win, fnwin_patch2) 1090 1091 /* Patch for trap entry setup... */ 1092 PATCH_INSN(tsetup_7win_patch1, tsetup_patch1) 1093 PATCH_INSN(tsetup_7win_patch2, tsetup_patch2) 1094 PATCH_INSN(tsetup_7win_patch3, tsetup_patch3) 1095 PATCH_INSN(tsetup_7win_patch4, tsetup_patch4) 1096 PATCH_INSN(tsetup_7win_patch5, tsetup_patch5) 1097 PATCH_INSN(tsetup_7win_patch6, tsetup_patch6) 1098 1099 /* Patch for returning from traps... */ 1100 PATCH_INSN(rtrap_7win_patch1, rtrap_patch1) 1101 PATCH_INSN(rtrap_7win_patch2, rtrap_patch2) 1102 PATCH_INSN(rtrap_7win_patch3, rtrap_patch3) 1103 PATCH_INSN(rtrap_7win_patch4, rtrap_patch4) 1104 PATCH_INSN(rtrap_7win_patch5, rtrap_patch5) 1105 1106 /* Patch for killing user windows from the register file. */ 1107 PATCH_INSN(kuw_patch1_7win, kuw_patch1) 1108 1109 /* Now patch the kernel window flush sequences. 1110 * This saves 2 traps on every switch and fork. 1111 */ 1112 set 0x01000000, %g4 1113 set flush_patch_one, %g5 1114 st %g4, [%g5 + 0x18] 1115 st %g4, [%g5 + 0x1c] 1116 set flush_patch_two, %g5 1117 st %g4, [%g5 + 0x18] 1118 st %g4, [%g5 + 0x1c] 1119 set flush_patch_three, %g5 1120 st %g4, [%g5 + 0x18] 1121 st %g4, [%g5 + 0x1c] 1122 set flush_patch_four, %g5 1123 st %g4, [%g5 + 0x18] 1124 st %g4, [%g5 + 0x1c] 1125 set flush_patch_exception, %g5 1126 st %g4, [%g5 + 0x18] 1127 st %g4, [%g5 + 0x1c] 1128 set flush_patch_switch, %g5 1129 st %g4, [%g5 + 0x18] 1130 st %g4, [%g5 + 0x1c] 1131 11322: 1133 sethi %hi(nwindows), %g4 1134 st %g3, [%g4 + %lo(nwindows)] ! store final value 1135 sub %g3, 0x1, %g3 1136 sethi %hi(nwindowsm1), %g4 1137 st %g3, [%g4 + %lo(nwindowsm1)] 1138 1139 /* Here we go, start using Linux's trap table... */ 1140 set trapbase, %g3 1141 wr %g3, 0x0, %tbr 1142 WRITE_PAUSE 1143 1144 /* Finally, turn on traps so that we can call c-code. */ 1145 rd %psr, %g3 1146 wr %g3, 0x0, %psr 1147 WRITE_PAUSE 1148 1149 wr %g3, PSR_ET, %psr 1150 WRITE_PAUSE 1151 1152 /* First we call prom_init() to set up PROMLIB, then 1153 * off to start_kernel(). 1154 */ 1155 1156 sethi %hi(prom_vector_p), %g5 1157 ld [%g5 + %lo(prom_vector_p)], %o0 1158 call prom_init 1159 nop 1160 1161 call start_kernel 1162 nop 1163 1164 /* We should not get here. */ 1165 call halt_me 1166 nop 1167 1168sun4_init: 1169 sethi %hi(SUN4_PROM_VECTOR+0x84), %o1 1170 ld [%o1 + %lo(SUN4_PROM_VECTOR+0x84)], %o1 1171 set sun4_notsup, %o0 1172 call %o1 /* printf */ 1173 nop 1174 sethi %hi(SUN4_PROM_VECTOR+0xc4), %o1 1175 ld [%o1 + %lo(SUN4_PROM_VECTOR+0xc4)], %o1 1176 call %o1 /* exittomon */ 1177 nop 11781: ba 1b ! Cannot exit into KMON 1179 nop 1180 1181no_sun4e_here: 1182 ld [%g7 + 0x68], %o1 1183 set sun4e_notsup, %o0 1184 call %o1 1185 nop 1186 b halt_me 1187 nop 1188 1189 __INITDATA 1190 1191sun4u_1: 1192 .asciz "finddevice" 1193 .align 4 1194sun4u_2: 1195 .asciz "/chosen" 1196 .align 4 1197sun4u_3: 1198 .asciz "getprop" 1199 .align 4 1200sun4u_4: 1201 .asciz "stdout" 1202 .align 4 1203sun4u_5: 1204 .asciz "write" 1205 .align 4 1206sun4u_6: 1207 .asciz "\n\rOn sun4u you have to use UltraLinux (64bit) kernel\n\rand not a 32bit sun4[cdem] version\n\r\n\r" 1208sun4u_6e: 1209 .align 4 1210sun4u_7: 1211 .asciz "exit" 1212 .align 8 1213sun4u_a1: 1214 .word 0, sun4u_1, 0, 1, 0, 1, 0, sun4u_2, 0 1215sun4u_r1: 1216 .word 0 1217sun4u_a2: 1218 .word 0, sun4u_3, 0, 4, 0, 1, 0 1219sun4u_i2: 1220 .word 0, 0, sun4u_4, 0, sun4u_1, 0, 8, 0 1221sun4u_r2: 1222 .word 0 1223sun4u_a3: 1224 .word 0, sun4u_5, 0, 3, 0, 1, 0 1225sun4u_i3: 1226 .word 0, 0, sun4u_6, 0, sun4u_6e - sun4u_6 - 1, 0 1227sun4u_r3: 1228 .word 0 1229sun4u_a4: 1230 .word 0, sun4u_7, 0, 0, 0, 0 1231sun4u_r4: 1232 1233 __INIT 1234no_sun4u_here: 1235 set sun4u_a1, %o0 1236 set current_pc, %l2 1237 cmp %l2, %g3 1238 be 1f 1239 mov %o4, %l0 1240 sub %g3, %l2, %l6 1241 add %o0, %l6, %o0 1242 mov %o0, %l4 1243 mov sun4u_r4 - sun4u_a1, %l3 1244 ld [%l4], %l5 12452: 1246 add %l4, 4, %l4 1247 cmp %l5, %l2 1248 add %l5, %l6, %l5 1249 bgeu,a 3f 1250 st %l5, [%l4 - 4] 12513: 1252 subcc %l3, 4, %l3 1253 bne 2b 1254 ld [%l4], %l5 12551: 1256 call %l0 1257 mov %o0, %l1 1258 1259 ld [%l1 + (sun4u_r1 - sun4u_a1)], %o1 1260 add %l1, (sun4u_a2 - sun4u_a1), %o0 1261 call %l0 1262 st %o1, [%o0 + (sun4u_i2 - sun4u_a2)] 1263 1264 ld [%l1 + (sun4u_1 - sun4u_a1)], %o1 1265 add %l1, (sun4u_a3 - sun4u_a1), %o0 1266 call %l0 1267 st %o1, [%o0 + (sun4u_i3 - sun4u_a3)] 1268 1269 call %l0 1270 add %l1, (sun4u_a4 - sun4u_a1), %o0 1271 1272 /* Not reached */ 1273halt_me: 1274 ld [%g7 + 0x74], %o0 1275 call %o0 ! Get us out of here... 1276 nop ! Apparently Solaris is better. 1277 1278/* Ok, now we continue in the .data/.text sections */ 1279 1280 .data 1281 .align 4 1282 1283/* 1284 * Fill up the prom vector, note in particular the kind first element, 1285 * no joke. I don't need all of them in here as the entire prom vector 1286 * gets initialized in c-code so all routines can use it. 1287 */ 1288 1289prom_vector_p: 1290 .word 0 1291 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 */ 1295 1296 .align 4 1297 .globl nwindows 1298 .globl nwindowsm1 1299nwindows: 1300 .word 8 1301nwindowsm1: 1302 .word 7 1303 1304/* Boot time debugger vector value. We need this later on. */ 1305 1306 .align 4 1307 .globl linux_dbvec 1308linux_dbvec: 1309 .word 0 1310 .word 0 1311 1312 .align 8 1313 1314 .globl lvl14_save 1315lvl14_save: 1316 .word 0 1317 .word 0 1318 .word 0 1319 .word 0 1320 .word t_irq14 1321 1322 .section ".fixup",#alloc,#execinstr 1323 .globl __ret_efault 1324__ret_efault: 1325 ret 1326 restore %g0, -EFAULT, %o0 1327