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 start, _stext, _start, __stext 77 .globl trapbase 78_start: /* danger danger */ 79__stext: 80_stext: 81start: 82trapbase: 83#ifdef CONFIG_SMP 84trapbase_cpu0: 85#endif 86/* We get control passed to us here at t_zero. */ 87t_zero: b gokernel; nop; nop; nop; 88t_tflt: SPARC_TFAULT /* Inst. Access Exception */ 89t_bins: TRAP_ENTRY(0x2, bad_instruction) /* Illegal Instruction */ 90t_pins: TRAP_ENTRY(0x3, priv_instruction) /* Privileged Instruction */ 91t_fpd: TRAP_ENTRY(0x4, fpd_trap_handler) /* Floating Point Disabled */ 92t_wovf: WINDOW_SPILL /* Window Overflow */ 93t_wunf: WINDOW_FILL /* Window Underflow */ 94t_mna: TRAP_ENTRY(0x7, mna_handler) /* Memory Address Not Aligned */ 95t_fpe: TRAP_ENTRY(0x8, fpe_trap_handler) /* Floating Point Exception */ 96t_dflt: SPARC_DFAULT /* Data Miss Exception */ 97t_tio: TRAP_ENTRY(0xa, do_tag_overflow) /* Tagged Instruction Ovrflw */ 98t_wpt: TRAP_ENTRY(0xb, do_watchpoint) /* Watchpoint Detected */ 99t_badc: BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 100t_irq1: TRAP_ENTRY_INTERRUPT(1) /* IRQ Software/SBUS Level 1 */ 101t_irq2: TRAP_ENTRY_INTERRUPT(2) /* IRQ SBUS Level 2 */ 102t_irq3: TRAP_ENTRY_INTERRUPT(3) /* IRQ SCSI/DMA/SBUS Level 3 */ 103t_irq4: TRAP_ENTRY_INTERRUPT(4) /* IRQ Software Level 4 */ 104t_irq5: TRAP_ENTRY_INTERRUPT(5) /* IRQ SBUS/Ethernet Level 5 */ 105t_irq6: TRAP_ENTRY_INTERRUPT(6) /* IRQ Software Level 6 */ 106t_irq7: TRAP_ENTRY_INTERRUPT(7) /* IRQ Video/SBUS Level 5 */ 107t_irq8: TRAP_ENTRY_INTERRUPT(8) /* IRQ SBUS Level 6 */ 108t_irq9: TRAP_ENTRY_INTERRUPT(9) /* IRQ SBUS Level 7 */ 109t_irq10:TRAP_ENTRY_INTERRUPT(10) /* IRQ Timer #1 (one we use) */ 110t_irq11:TRAP_ENTRY_INTERRUPT(11) /* IRQ Floppy Intr. */ 111t_irq12:TRAP_ENTRY_INTERRUPT(12) /* IRQ Zilog serial chip */ 112t_irq13:TRAP_ENTRY_INTERRUPT(13) /* IRQ Audio Intr. */ 113t_irq14:TRAP_ENTRY_INTERRUPT(14) /* IRQ Timer #2 */ 114 .globl t_nmi 115#ifndef CONFIG_SMP 116t_nmi: NMI_TRAP /* Level 15 (NMI) */ 117#else 118t_nmi: TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 119#endif 120t_racc: TRAP_ENTRY(0x20, do_reg_access) /* General Register Access Error */ 121t_iacce:BAD_TRAP(0x21) /* Instr Access Error */ 122t_bad22:BAD_TRAP(0x22) BAD_TRAP(0x23) 123t_cpdis:TRAP_ENTRY(0x24, do_cp_disabled) /* Co-Processor Disabled */ 124t_uflsh:SKIP_TRAP(0x25, unimp_flush) /* Unimplemented FLUSH inst. */ 125t_bad26:BAD_TRAP(0x26) BAD_TRAP(0x27) 126t_cpexc:TRAP_ENTRY(0x28, do_cp_exception) /* Co-Processor Exception */ 127t_dacce:SPARC_DFAULT /* Data Access Error */ 128t_hwdz: TRAP_ENTRY(0x2a, do_hw_divzero) /* Division by zero, you lose... */ 129t_dserr:BAD_TRAP(0x2b) /* Data Store Error */ 130t_daccm:BAD_TRAP(0x2c) /* Data Access MMU-Miss */ 131t_bad2d:BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 132t_bad32:BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 133t_bad37:BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 134t_iaccm:BAD_TRAP(0x3c) /* Instr Access MMU-Miss */ 135t_bad3d:BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) BAD_TRAP(0x41) 136t_bad42:BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) BAD_TRAP(0x46) 137t_bad47:BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) BAD_TRAP(0x4b) 138t_bad4c:BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) BAD_TRAP(0x50) 139t_bad51:BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 140t_bad56:BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 141t_bad5b:BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 142t_bad60:BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 143t_bad65:BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 144t_bad6a:BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 145t_bad6f:BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 146t_bad74:BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 147t_bad79:BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 148t_bad7e:BAD_TRAP(0x7e) BAD_TRAP(0x7f) 149t_bad80:BAD_TRAP(0x80) /* SunOS System Call */ 150t_sbkpt:BREAKPOINT_TRAP /* Software Breakpoint/KGDB */ 151t_divz: TRAP_ENTRY(0x82, do_hw_divzero) /* Divide by zero trap */ 152t_flwin:TRAP_ENTRY(0x83, do_flush_windows) /* Flush Windows Trap */ 153t_clwin:BAD_TRAP(0x84) /* Clean Windows Trap */ 154t_rchk: BAD_TRAP(0x85) /* Range Check */ 155t_funal:BAD_TRAP(0x86) /* Fix Unaligned Access Trap */ 156t_iovf: BAD_TRAP(0x87) /* Integer Overflow Trap */ 157t_bad88:BAD_TRAP(0x88) /* Slowaris System Call */ 158t_bad89:BAD_TRAP(0x89) /* Net-B.S. System Call */ 159t_bad8a:BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) BAD_TRAP(0x8d) BAD_TRAP(0x8e) 160t_bad8f:BAD_TRAP(0x8f) 161t_linux:LINUX_SYSCALL_TRAP /* Linux System Call */ 162t_bad91:BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) BAD_TRAP(0x95) 163t_bad96:BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) BAD_TRAP(0x9a) 164t_bad9b:BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) BAD_TRAP(0x9f) 165t_getcc:GETCC_TRAP /* Get Condition Codes */ 166t_setcc:SETCC_TRAP /* Set Condition Codes */ 167t_getpsr:GETPSR_TRAP /* Get PSR Register */ 168t_bada3:BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 169t_bada7:BAD_TRAP(0xa7) 170t_bada8:BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 171t_badac:BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 172t_badb1:BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 173t_badb6:BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 174t_badbb:BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 175t_badc0:BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 176t_badc5:BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 177t_badca:BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 178t_badcf:BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 179t_badd4:BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 180t_badd9:BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 181t_badde:BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 182t_bade3:BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 183t_bade8:BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 184t_baded:BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 185t_badf2:BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 186t_badf7:BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 187t_badfc:BAD_TRAP(0xfc) 188t_kgdb: KGDB_TRAP(0xfd) 189dbtrap: BAD_TRAP(0xfe) /* Debugger/PROM breakpoint #1 */ 190dbtrap2:BAD_TRAP(0xff) /* Debugger/PROM breakpoint #2 */ 191 192 .globl end_traptable 193end_traptable: 194 195#ifdef CONFIG_SMP 196 /* Trap tables for the other cpus. */ 197 .globl trapbase_cpu1, trapbase_cpu2, trapbase_cpu3 198trapbase_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 266trapbase_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 334trapbase_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 413swapper_pg_dir: .skip PAGE_SIZE 414pg0: .skip PAGE_SIZE 415pg1: .skip PAGE_SIZE 416pg2: .skip PAGE_SIZE 417pg3: .skip PAGE_SIZE 418empty_bad_page: .skip PAGE_SIZE 419empty_bad_page_table: .skip PAGE_SIZE 420empty_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 */ 435root_flags: 436 .half 1 437root_dev: 438 .half 0 439ram_flags: 440 .half 0 441sparc_ramdisk_image: 442 .word 0 443sparc_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 */ 453gokernel: 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... */ 468current_pc: 469 call 1f 470 nop 471 4721: 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 498already_mapped: 499 mov 0, %l6 500 501 /* Copy over the Prom's level 14 clock handler. */ 502copy_prom_lvl14: 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 rd %tbr, %g1 515 andn %g1, 0xfff, %g1 ! proms trap table base 516 or %g0, (0x1e<<4), %g2 ! offset to lvl14 intr 517 or %g1, %g2, %g2 518 set t_irq14, %g3 519 sub %g3, %l6, %g3 520 ldd [%g2], %g4 521 std %g4, [%g3] 522 ldd [%g2 + 0x8], %g4 523 std %g4, [%g3 + 0x8] ! Copy proms handler 524 525/* Must determine whether we are on a sun4c MMU, SRMMU, or SUN4/400 MUTANT 526 * MMU so we can remap ourselves properly. DON'T TOUCH %l0 thru %l5 in these 527 * remapping routines, we need their values afterwards! 528 */ 529 /* Now check whether we are already mapped, if we 530 * are we can skip all this garbage coming up. 531 */ 532copy_prom_done: 533 cmp %l6, 0 534 be go_to_highmem ! this will be a nop then 535 nop 536 537 set LOAD_ADDR, %g6 538 cmp %g7, %g6 539 bne remap_not_a_sun4 ! This is not a Sun4 540 nop 541 542 or %g0, 0x1, %g1 543 lduba [%g1] ASI_CONTROL, %g1 ! Only safe to try on Sun4. 544 subcc %g1, 0x24, %g0 ! Is this a mutant Sun4/400??? 545 be sun4_mutant_remap ! Ugh, it is... 546 nop 547 548 b sun4_normal_remap ! regular sun4, 2 level mmu 549 nop 550 551remap_not_a_sun4: 552 lda [%g0] ASI_M_MMUREGS, %g1 ! same as ASI_PTE on sun4c 553 and %g1, 0x1, %g1 ! Test SRMMU Enable bit ;-) 554 cmp %g1, 0x0 555 be sun4c_remap ! A sun4c MMU or normal Sun4 556 nop 557srmmu_remap: 558 /* First, check for a viking (TI) module. */ 559 set 0x40000000, %g2 560 rd %psr, %g3 561 and %g2, %g3, %g3 562 subcc %g3, 0x0, %g0 563 bz srmmu_nviking 564 nop 565 566 /* Figure out what kind of viking we are on. 567 * We need to know if we have to play with the 568 * AC bit and disable traps or not. 569 */ 570 571 /* I've only seen MicroSparc's on SparcClassics with this 572 * bit set. 573 */ 574 set 0x800, %g2 575 lda [%g0] ASI_M_MMUREGS, %g3 ! peek in the control reg 576 and %g2, %g3, %g3 577 subcc %g3, 0x0, %g0 578 bnz srmmu_nviking ! is in mbus mode 579 nop 580 581 rd %psr, %g3 ! DO NOT TOUCH %g3 582 andn %g3, PSR_ET, %g2 583 wr %g2, 0x0, %psr 584 WRITE_PAUSE 585 586 /* Get context table pointer, then convert to 587 * a physical address, which is 36 bits. 588 */ 589 set AC_M_CTPR, %g4 590 lda [%g4] ASI_M_MMUREGS, %g4 591 sll %g4, 0x4, %g4 ! We use this below 592 ! DO NOT TOUCH %g4 593 594 /* Set the AC bit in the Viking's MMU control reg. */ 595 lda [%g0] ASI_M_MMUREGS, %g5 ! DO NOT TOUCH %g5 596 set 0x8000, %g6 ! AC bit mask 597 or %g5, %g6, %g6 ! Or it in... 598 sta %g6, [%g0] ASI_M_MMUREGS ! Close your eyes... 599 600 /* Grrr, why does it seem like every other load/store 601 * on the sun4m is in some ASI space... 602 * Fine with me, let's get the pointer to the level 1 603 * page table directory and fetch its entry. 604 */ 605 lda [%g4] ASI_M_BYPASS, %o1 ! This is a level 1 ptr 606 srl %o1, 0x4, %o1 ! Clear low 4 bits 607 sll %o1, 0x8, %o1 ! Make physical 608 609 /* Ok, pull in the PTD. */ 610 lda [%o1] ASI_M_BYPASS, %o2 ! This is the 0x0 16MB pgd 611 612 /* Calculate to KERNBASE entry. */ 613 add %o1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %o3 614 615 /* Poke the entry into the calculated address. */ 616 sta %o2, [%o3] ASI_M_BYPASS 617 618 /* I don't get it Sun, if you engineered all these 619 * boot loaders and the PROM (thank you for the debugging 620 * features btw) why did you not have them load kernel 621 * images up in high address space, since this is necessary 622 * for ABI compliance anyways? Does this low-mapping provide 623 * enhanced interoperability? 624 * 625 * "The PROM is the computer." 626 */ 627 628 /* Ok, restore the MMU control register we saved in %g5 */ 629 sta %g5, [%g0] ASI_M_MMUREGS ! POW... ouch 630 631 /* Turn traps back on. We saved it in %g3 earlier. */ 632 wr %g3, 0x0, %psr ! tick tock, tick tock 633 634 /* Now we burn precious CPU cycles due to bad engineering. */ 635 WRITE_PAUSE 636 637 /* Wow, all that just to move a 32-bit value from one 638 * place to another... Jump to high memory. 639 */ 640 b go_to_highmem 641 nop 642 643 /* This works on viking's in Mbus mode and all 644 * other MBUS modules. It is virtually the same as 645 * the above madness sans turning traps off and flipping 646 * the AC bit. 647 */ 648srmmu_nviking: 649 set AC_M_CTPR, %g1 650 lda [%g1] ASI_M_MMUREGS, %g1 ! get ctx table ptr 651 sll %g1, 0x4, %g1 ! make physical addr 652 lda [%g1] ASI_M_BYPASS, %g1 ! ptr to level 1 pg_table 653 srl %g1, 0x4, %g1 654 sll %g1, 0x8, %g1 ! make phys addr for l1 tbl 655 656 lda [%g1] ASI_M_BYPASS, %g2 ! get level1 entry for 0x0 657 add %g1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %g3 658 sta %g2, [%g3] ASI_M_BYPASS ! place at KERNBASE entry 659 b go_to_highmem 660 nop ! wheee.... 661 662 /* This remaps the kernel on Sun4/4xx machines 663 * that have the Sun Mutant Three Level MMU. 664 * It's like a platypus, Sun didn't have the 665 * SRMMU in conception so they kludged the three 666 * level logic in the regular Sun4 MMU probably. 667 * 668 * Basically, you take each entry in the top level 669 * directory that maps the low 3MB starting at 670 * address zero and put the mapping in the KERNBASE 671 * slots. These top level pgd's are called regmaps. 672 */ 673sun4_mutant_remap: 674 or %g0, %g0, %g3 ! source base 675 sethi %hi(KERNBASE), %g4 ! destination base 676 or %g4, %lo(KERNBASE), %g4 677 sethi %hi(0x300000), %g5 678 or %g5, %lo(0x300000), %g5 ! upper bound 3MB 679 or %g0, 0x1, %l6 680 sll %l6, 24, %l6 ! Regmap mapping size 681 add %g3, 0x2, %g3 ! Base magic 682 add %g4, 0x2, %g4 ! Base magic 683 684 /* Main remapping loop on Sun4-Mutant-MMU. 685 * "I am not an animal..." -Famous Mutant Person 686 */ 687sun4_mutant_loop: 688 lduha [%g3] ASI_REGMAP, %g2 ! Get lower entry 689 stha %g2, [%g4] ASI_REGMAP ! Store in high entry 690 add %g4, %l6, %g4 ! Move up high memory ptr 691 subcc %g3, %g5, %g0 ! Reached our limit? 692 blu sun4_mutant_loop ! Nope, loop again 693 add %g3, %l6, %g3 ! delay, Move up low ptr 694 b go_to_highmem ! Jump to high memory. 695 nop 696 697 /* The following is for non-4/4xx sun4 MMU's. */ 698sun4_normal_remap: 699 mov 0, %g3 ! source base 700 set KERNBASE, %g4 ! destination base 701 set 0x300000, %g5 ! upper bound 3MB 702 mov 1, %l6 703 sll %l6, 18, %l6 ! sun4 mmu segmap size 704sun4_normal_loop: 705 lduha [%g3] ASI_SEGMAP, %g6 ! load phys_seg 706 stha %g6, [%g4] ASI_SEGMAP ! stort new virt mapping 707 add %g3, %l6, %g3 ! increment source pointer 708 subcc %g3, %g5, %g0 ! reached limit? 709 blu sun4_normal_loop ! nope, loop again 710 add %g4, %l6, %g4 ! delay, increment dest ptr 711 b go_to_highmem 712 nop 713 714 /* The following works for Sun4c MMU's */ 715sun4c_remap: 716 mov 0, %g3 ! source base 717 set KERNBASE, %g4 ! destination base 718 set 0x300000, %g5 ! upper bound 3MB 719 mov 1, %l6 720 sll %l6, 18, %l6 ! sun4c mmu segmap size 721sun4c_remap_loop: 722 lda [%g3] ASI_SEGMAP, %g6 ! load phys_seg 723 sta %g6, [%g4] ASI_SEGMAP ! store new virt mapping 724 add %g3, %l6, %g3 ! Increment source ptr 725 subcc %g3, %g5, %g0 ! Reached limit? 726 bl sun4c_remap_loop ! Nope, loop again 727 add %g4, %l6, %g4 ! delay, Increment dest ptr 728 729/* Now do a non-relative jump so that PC is in high-memory */ 730go_to_highmem: 731 set execute_in_high_mem, %g1 732 jmpl %g1, %g0 733 nop 734 735/* The code above should be at beginning and we have to take care about 736 * short jumps, as branching to .init.text section from .text is usually 737 * impossible */ 738 __INIT 739/* Acquire boot time privileged register values, this will help debugging. 740 * I figure out and store nwindows and nwindowsm1 later on. 741 */ 742execute_in_high_mem: 743 mov %l0, %o0 ! put back romvec 744 mov %l1, %o1 ! and debug_vec 745 746 sethi %hi(prom_vector_p), %g1 747 st %o0, [%g1 + %lo(prom_vector_p)] 748 749 sethi %hi(linux_dbvec), %g1 750 st %o1, [%g1 + %lo(linux_dbvec)] 751 752 ld [%o0 + 0x4], %o3 753 and %o3, 0x3, %o5 ! get the version 754 755 cmp %o3, 0x2 ! a v2 prom? 756 be found_version 757 nop 758 759 /* paul@sfe.com.au */ 760 cmp %o3, 0x3 ! a v3 prom? 761 be found_version 762 nop 763 764/* Old sun4's pass our load address into %o0 instead of the prom 765 * pointer. On sun4's you have to hard code the romvec pointer into 766 * your code. Sun probably still does that because they don't even 767 * trust their own "OpenBoot" specifications. 768 */ 769 set LOAD_ADDR, %g6 770 cmp %o0, %g6 ! an old sun4? 771 be sun4_init 772 nop 773 774found_version: 775/* Get the machine type via the mysterious romvec node operations. */ 776 777 add %g7, 0x1c, %l1 778 ld [%l1], %l0 779 ld [%l0], %l0 780 call %l0 781 or %g0, %g0, %o0 ! next_node(0) = first_node 782 or %o0, %g0, %g6 783 784 sethi %hi(cputypvar), %o1 ! First node has cpu-arch 785 or %o1, %lo(cputypvar), %o1 786 sethi %hi(cputypval), %o2 ! information, the string 787 or %o2, %lo(cputypval), %o2 788 ld [%l1], %l0 ! 'compatibility' tells 789 ld [%l0 + 0xc], %l0 ! that we want 'sun4x' where 790 call %l0 ! x is one of '', 'c', 'm', 791 nop ! 'd' or 'e'. %o2 holds pointer 792 ! to a buf where above string 793 ! will get stored by the prom. 794 795 subcc %o0, %g0, %g0 796 bpos got_prop ! Got the property 797 nop 798 799 or %g6, %g0, %o0 800 sethi %hi(cputypvar_sun4m), %o1 801 or %o1, %lo(cputypvar_sun4m), %o1 802 sethi %hi(cputypval), %o2 803 or %o2, %lo(cputypval), %o2 804 ld [%l1], %l0 805 ld [%l0 + 0xc], %l0 806 call %l0 807 nop 808 809got_prop: 810#ifdef CONFIG_SPARC_LEON 811 /* no cpu-type check is needed, it is a SPARC-LEON */ 812#ifdef CONFIG_SMP 813 ba leon_smp_init 814 nop 815 816 .global leon_smp_init 817leon_smp_init: 818 sethi %hi(boot_cpu_id), %g1 ! master always 0 819 stb %g0, [%g1 + %lo(boot_cpu_id)] 820 sethi %hi(boot_cpu_id4), %g1 ! master always 0 821 stb %g0, [%g1 + %lo(boot_cpu_id4)] 822 823 rd %asr17,%g1 824 srl %g1,28,%g1 825 826 cmp %g0,%g1 827 beq sun4c_continue_boot !continue with master 828 nop 829 830 ba leon_smp_cpu_startup 831 nop 832#else 833 ba sun4c_continue_boot 834 nop 835#endif 836#endif 837 set cputypval, %o2 838 ldub [%o2 + 0x4], %l1 839 840 cmp %l1, ' ' 841 be 1f 842 cmp %l1, 'c' 843 be 1f 844 cmp %l1, 'm' 845 be 1f 846 cmp %l1, 's' 847 be 1f 848 cmp %l1, 'd' 849 be 1f 850 cmp %l1, 'e' 851 be no_sun4e_here ! Could be a sun4e. 852 nop 853 b no_sun4u_here ! AIEEE, a V9 sun4u... Get our BIG BROTHER kernel :)) 854 nop 855 8561: set cputypval, %l1 857 ldub [%l1 + 0x4], %l1 858 cmp %l1, 'm' ! Test for sun4d, sun4e ? 859 be sun4m_init 860 cmp %l1, 's' ! Treat sun4s as sun4m 861 be sun4m_init 862 cmp %l1, 'd' ! Let us see how the beast will die 863 be sun4d_init 864 nop 865 866 /* Jump into mmu context zero. */ 867 set AC_CONTEXT, %g1 868 stba %g0, [%g1] ASI_CONTROL 869 870 b sun4c_continue_boot 871 nop 872 873/* CPUID in bootbus can be found at PA 0xff0140000 */ 874#define SUN4D_BOOTBUS_CPUID 0xf0140000 875 876sun4d_init: 877 /* Need to patch call to handler_irq */ 878 set patch_handler_irq, %g4 879 set sun4d_handler_irq, %g5 880 sethi %hi(0x40000000), %g3 ! call 881 sub %g5, %g4, %g5 882 srl %g5, 2, %g5 883 or %g5, %g3, %g5 884 st %g5, [%g4] 885 886#ifdef CONFIG_SMP 887 /* Get our CPU id out of bootbus */ 888 set SUN4D_BOOTBUS_CPUID, %g3 889 lduba [%g3] ASI_M_CTL, %g3 890 and %g3, 0xf8, %g3 891 srl %g3, 3, %g4 892 sta %g4, [%g0] ASI_M_VIKING_TMP1 893 sethi %hi(boot_cpu_id), %g5 894 stb %g4, [%g5 + %lo(boot_cpu_id)] 895 sll %g4, 2, %g4 896 sethi %hi(boot_cpu_id4), %g5 897 stb %g4, [%g5 + %lo(boot_cpu_id4)] 898#endif 899 900 /* Fall through to sun4m_init */ 901 902sun4m_init: 903 lda [%g0] ASI_M_MMUREGS, %g5 904 srl %g5, 28, %g4 905 906 cmp %g4, 1 907 bne 1f 908 srl %g5, 24, %g4 909 910 and %g4, 0xf, %g4 911 cmp %g4, 7 /* This would be a HyperSparc. */ 912 913 bne 2f 914 nop 915 9161: 917 918#define PATCH_IT(dst, src) \ 919 set (dst), %g5; \ 920 set (src), %g4; \ 921 ld [%g4], %g3; \ 922 st %g3, [%g5]; \ 923 ld [%g4+0x4], %g3; \ 924 st %g3, [%g5+0x4]; 925 926 /* Signed multiply. */ 927 PATCH_IT(.mul, .mul_patch) 928 PATCH_IT(.mul+0x08, .mul_patch+0x08) 929 930 /* Signed remainder. */ 931 PATCH_IT(.rem, .rem_patch) 932 PATCH_IT(.rem+0x08, .rem_patch+0x08) 933 PATCH_IT(.rem+0x10, .rem_patch+0x10) 934 PATCH_IT(.rem+0x18, .rem_patch+0x18) 935 PATCH_IT(.rem+0x20, .rem_patch+0x20) 936 PATCH_IT(.rem+0x28, .rem_patch+0x28) 937 938 /* Signed division. */ 939 PATCH_IT(.div, .div_patch) 940 PATCH_IT(.div+0x08, .div_patch+0x08) 941 PATCH_IT(.div+0x10, .div_patch+0x10) 942 PATCH_IT(.div+0x18, .div_patch+0x18) 943 PATCH_IT(.div+0x20, .div_patch+0x20) 944 945 /* Unsigned multiply. */ 946 PATCH_IT(.umul, .umul_patch) 947 PATCH_IT(.umul+0x08, .umul_patch+0x08) 948 949 /* Unsigned remainder. */ 950 PATCH_IT(.urem, .urem_patch) 951 PATCH_IT(.urem+0x08, .urem_patch+0x08) 952 PATCH_IT(.urem+0x10, .urem_patch+0x10) 953 PATCH_IT(.urem+0x18, .urem_patch+0x18) 954 955 /* Unsigned division. */ 956 PATCH_IT(.udiv, .udiv_patch) 957 PATCH_IT(.udiv+0x08, .udiv_patch+0x08) 958 PATCH_IT(.udiv+0x10, .udiv_patch+0x10) 959 960#undef PATCH_IT 961 962/* Ok, the PROM could have done funny things and apple cider could still 963 * be sitting in the fault status/address registers. Read them all to 964 * clear them so we don't get magic faults later on. 965 */ 966/* This sucks, apparently this makes Vikings call prom panic, will fix later */ 9672: 968 rd %psr, %o1 969 srl %o1, 28, %o1 ! Get a type of the CPU 970 971 subcc %o1, 4, %g0 ! TI: Viking or MicroSPARC 972 be sun4c_continue_boot 973 nop 974 975 set AC_M_SFSR, %o0 976 lda [%o0] ASI_M_MMUREGS, %g0 977 set AC_M_SFAR, %o0 978 lda [%o0] ASI_M_MMUREGS, %g0 979 980 /* Fujitsu MicroSPARC-II has no asynchronous flavors of FARs */ 981 subcc %o1, 0, %g0 982 be sun4c_continue_boot 983 nop 984 985 set AC_M_AFSR, %o0 986 lda [%o0] ASI_M_MMUREGS, %g0 987 set AC_M_AFAR, %o0 988 lda [%o0] ASI_M_MMUREGS, %g0 989 nop 990 991 992sun4c_continue_boot: 993 994 995/* Aieee, now set PC and nPC, enable traps, give ourselves a stack and it's 996 * show-time! 997 */ 998 999 sethi %hi(cputyp), %o0 1000 st %g4, [%o0 + %lo(cputyp)] 1001 1002 /* Turn on Supervisor, EnableFloating, and all the PIL bits. 1003 * Also puts us in register window zero with traps off. 1004 */ 1005 set (PSR_PS | PSR_S | PSR_PIL | PSR_EF), %g2 1006 wr %g2, 0x0, %psr 1007 WRITE_PAUSE 1008 1009 /* I want a kernel stack NOW! */ 1010 set init_thread_union, %g1 1011 set (THREAD_SIZE - STACKFRAME_SZ), %g2 1012 add %g1, %g2, %sp 1013 mov 0, %fp /* And for good luck */ 1014 1015 /* Zero out our BSS section. */ 1016 set __bss_start , %o0 ! First address of BSS 1017 set _end , %o1 ! Last address of BSS 1018 add %o0, 0x1, %o0 10191: 1020 stb %g0, [%o0] 1021 subcc %o0, %o1, %g0 1022 bl 1b 1023 add %o0, 0x1, %o0 1024 1025 /* Initialize the uwinmask value for init task just in case. 1026 * But first make current_set[boot_cpu_id] point to something useful. 1027 */ 1028 set init_thread_union, %g6 1029 set current_set, %g2 1030#ifdef CONFIG_SMP 1031 sethi %hi(boot_cpu_id4), %g3 1032 ldub [%g3 + %lo(boot_cpu_id4)], %g3 1033 st %g6, [%g2] 1034 add %g2, %g3, %g2 1035#endif 1036 st %g6, [%g2] 1037 1038 st %g0, [%g6 + TI_UWINMASK] 1039 1040/* Compute NWINDOWS and stash it away. Now uses %wim trick explained 1041 * in the V8 manual. Ok, this method seems to work, Sparc is cool... 1042 * No, it doesn't work, have to play the save/readCWP/restore trick. 1043 */ 1044 1045 wr %g0, 0x0, %wim ! so we do not get a trap 1046 WRITE_PAUSE 1047 1048 save 1049 1050 rd %psr, %g3 1051 1052 restore 1053 1054 and %g3, 0x1f, %g3 1055 add %g3, 0x1, %g3 1056 1057 mov 2, %g1 1058 wr %g1, 0x0, %wim ! make window 1 invalid 1059 WRITE_PAUSE 1060 1061 cmp %g3, 0x7 1062 bne 2f 1063 nop 1064 1065 /* Adjust our window handling routines to 1066 * do things correctly on 7 window Sparcs. 1067 */ 1068 1069#define PATCH_INSN(src, dest) \ 1070 set src, %g5; \ 1071 set dest, %g2; \ 1072 ld [%g5], %g4; \ 1073 st %g4, [%g2]; 1074 1075 /* Patch for window spills... */ 1076 PATCH_INSN(spnwin_patch1_7win, spnwin_patch1) 1077 PATCH_INSN(spnwin_patch2_7win, spnwin_patch2) 1078 PATCH_INSN(spnwin_patch3_7win, spnwin_patch3) 1079 1080 /* Patch for window fills... */ 1081 PATCH_INSN(fnwin_patch1_7win, fnwin_patch1) 1082 PATCH_INSN(fnwin_patch2_7win, fnwin_patch2) 1083 1084 /* Patch for trap entry setup... */ 1085 PATCH_INSN(tsetup_7win_patch1, tsetup_patch1) 1086 PATCH_INSN(tsetup_7win_patch2, tsetup_patch2) 1087 PATCH_INSN(tsetup_7win_patch3, tsetup_patch3) 1088 PATCH_INSN(tsetup_7win_patch4, tsetup_patch4) 1089 PATCH_INSN(tsetup_7win_patch5, tsetup_patch5) 1090 PATCH_INSN(tsetup_7win_patch6, tsetup_patch6) 1091 1092 /* Patch for returning from traps... */ 1093 PATCH_INSN(rtrap_7win_patch1, rtrap_patch1) 1094 PATCH_INSN(rtrap_7win_patch2, rtrap_patch2) 1095 PATCH_INSN(rtrap_7win_patch3, rtrap_patch3) 1096 PATCH_INSN(rtrap_7win_patch4, rtrap_patch4) 1097 PATCH_INSN(rtrap_7win_patch5, rtrap_patch5) 1098 1099 /* Patch for killing user windows from the register file. */ 1100 PATCH_INSN(kuw_patch1_7win, kuw_patch1) 1101 1102 /* Now patch the kernel window flush sequences. 1103 * This saves 2 traps on every switch and fork. 1104 */ 1105 set 0x01000000, %g4 1106 set flush_patch_one, %g5 1107 st %g4, [%g5 + 0x18] 1108 st %g4, [%g5 + 0x1c] 1109 set flush_patch_two, %g5 1110 st %g4, [%g5 + 0x18] 1111 st %g4, [%g5 + 0x1c] 1112 set flush_patch_three, %g5 1113 st %g4, [%g5 + 0x18] 1114 st %g4, [%g5 + 0x1c] 1115 set flush_patch_four, %g5 1116 st %g4, [%g5 + 0x18] 1117 st %g4, [%g5 + 0x1c] 1118 set flush_patch_exception, %g5 1119 st %g4, [%g5 + 0x18] 1120 st %g4, [%g5 + 0x1c] 1121 set flush_patch_switch, %g5 1122 st %g4, [%g5 + 0x18] 1123 st %g4, [%g5 + 0x1c] 1124 11252: 1126 sethi %hi(nwindows), %g4 1127 st %g3, [%g4 + %lo(nwindows)] ! store final value 1128 sub %g3, 0x1, %g3 1129 sethi %hi(nwindowsm1), %g4 1130 st %g3, [%g4 + %lo(nwindowsm1)] 1131 1132 /* Here we go, start using Linux's trap table... */ 1133 set trapbase, %g3 1134 wr %g3, 0x0, %tbr 1135 WRITE_PAUSE 1136 1137 /* Finally, turn on traps so that we can call c-code. */ 1138 rd %psr, %g3 1139 wr %g3, 0x0, %psr 1140 WRITE_PAUSE 1141 1142 wr %g3, PSR_ET, %psr 1143 WRITE_PAUSE 1144 1145 /* First we call prom_init() to set up PROMLIB, then 1146 * off to start_kernel(). 1147 */ 1148 1149 sethi %hi(prom_vector_p), %g5 1150 ld [%g5 + %lo(prom_vector_p)], %o0 1151 call prom_init 1152 nop 1153 1154 call start_kernel 1155 nop 1156 1157 /* We should not get here. */ 1158 call halt_me 1159 nop 1160 1161sun4_init: 1162 sethi %hi(SUN4_PROM_VECTOR+0x84), %o1 1163 ld [%o1 + %lo(SUN4_PROM_VECTOR+0x84)], %o1 1164 set sun4_notsup, %o0 1165 call %o1 /* printf */ 1166 nop 1167 sethi %hi(SUN4_PROM_VECTOR+0xc4), %o1 1168 ld [%o1 + %lo(SUN4_PROM_VECTOR+0xc4)], %o1 1169 call %o1 /* exittomon */ 1170 nop 11711: ba 1b ! Cannot exit into KMON 1172 nop 1173 1174no_sun4e_here: 1175 ld [%g7 + 0x68], %o1 1176 set sun4e_notsup, %o0 1177 call %o1 1178 nop 1179 b halt_me 1180 nop 1181 1182 __INITDATA 1183 1184sun4u_1: 1185 .asciz "finddevice" 1186 .align 4 1187sun4u_2: 1188 .asciz "/chosen" 1189 .align 4 1190sun4u_3: 1191 .asciz "getprop" 1192 .align 4 1193sun4u_4: 1194 .asciz "stdout" 1195 .align 4 1196sun4u_5: 1197 .asciz "write" 1198 .align 4 1199sun4u_6: 1200 .asciz "\n\rOn sun4u you have to use UltraLinux (64bit) kernel\n\rand not a 32bit sun4[cdem] version\n\r\n\r" 1201sun4u_6e: 1202 .align 4 1203sun4u_7: 1204 .asciz "exit" 1205 .align 8 1206sun4u_a1: 1207 .word 0, sun4u_1, 0, 1, 0, 1, 0, sun4u_2, 0 1208sun4u_r1: 1209 .word 0 1210sun4u_a2: 1211 .word 0, sun4u_3, 0, 4, 0, 1, 0 1212sun4u_i2: 1213 .word 0, 0, sun4u_4, 0, sun4u_1, 0, 8, 0 1214sun4u_r2: 1215 .word 0 1216sun4u_a3: 1217 .word 0, sun4u_5, 0, 3, 0, 1, 0 1218sun4u_i3: 1219 .word 0, 0, sun4u_6, 0, sun4u_6e - sun4u_6 - 1, 0 1220sun4u_r3: 1221 .word 0 1222sun4u_a4: 1223 .word 0, sun4u_7, 0, 0, 0, 0 1224sun4u_r4: 1225 1226 __INIT 1227no_sun4u_here: 1228 set sun4u_a1, %o0 1229 set current_pc, %l2 1230 cmp %l2, %g3 1231 be 1f 1232 mov %o4, %l0 1233 sub %g3, %l2, %l6 1234 add %o0, %l6, %o0 1235 mov %o0, %l4 1236 mov sun4u_r4 - sun4u_a1, %l3 1237 ld [%l4], %l5 12382: 1239 add %l4, 4, %l4 1240 cmp %l5, %l2 1241 add %l5, %l6, %l5 1242 bgeu,a 3f 1243 st %l5, [%l4 - 4] 12443: 1245 subcc %l3, 4, %l3 1246 bne 2b 1247 ld [%l4], %l5 12481: 1249 call %l0 1250 mov %o0, %l1 1251 1252 ld [%l1 + (sun4u_r1 - sun4u_a1)], %o1 1253 add %l1, (sun4u_a2 - sun4u_a1), %o0 1254 call %l0 1255 st %o1, [%o0 + (sun4u_i2 - sun4u_a2)] 1256 1257 ld [%l1 + (sun4u_1 - sun4u_a1)], %o1 1258 add %l1, (sun4u_a3 - sun4u_a1), %o0 1259 call %l0 1260 st %o1, [%o0 + (sun4u_i3 - sun4u_a3)] 1261 1262 call %l0 1263 add %l1, (sun4u_a4 - sun4u_a1), %o0 1264 1265 /* Not reached */ 1266halt_me: 1267 ld [%g7 + 0x74], %o0 1268 call %o0 ! Get us out of here... 1269 nop ! Apparently Solaris is better. 1270 1271/* Ok, now we continue in the .data/.text sections */ 1272 1273 .data 1274 .align 4 1275 1276/* 1277 * Fill up the prom vector, note in particular the kind first element, 1278 * no joke. I don't need all of them in here as the entire prom vector 1279 * gets initialized in c-code so all routines can use it. 1280 */ 1281 1282prom_vector_p: 1283 .word 0 1284 1285/* We calculate the following at boot time, window fills/spills and trap entry 1286 * code uses these to keep track of the register windows. 1287 */ 1288 1289 .align 4 1290 .globl nwindows 1291 .globl nwindowsm1 1292nwindows: 1293 .word 8 1294nwindowsm1: 1295 .word 7 1296 1297/* Boot time debugger vector value. We need this later on. */ 1298 1299 .align 4 1300 .globl linux_dbvec 1301linux_dbvec: 1302 .word 0 1303 .word 0 1304 1305 .align 8 1306 1307 .globl lvl14_save 1308lvl14_save: 1309 .word 0 1310 .word 0 1311 .word 0 1312 .word 0 1313 .word t_irq14 1314 1315 .section ".fixup",#alloc,#execinstr 1316 .globl __ret_efault 1317__ret_efault: 1318 ret 1319 restore %g0, -EFAULT, %o0 1320