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 114t_nmi: TRAP_ENTRY(0x1f, linux_trap_ipi15) 115 116t_racc: TRAP_ENTRY(0x20, do_reg_access) /* General Register Access Error */ 117t_iacce:BAD_TRAP(0x21) /* Instr Access Error */ 118t_bad22:BAD_TRAP(0x22) BAD_TRAP(0x23) 119t_cpdis:TRAP_ENTRY(0x24, do_cp_disabled) /* Co-Processor Disabled */ 120t_uflsh:SKIP_TRAP(0x25, unimp_flush) /* Unimplemented FLUSH inst. */ 121t_bad26:BAD_TRAP(0x26) BAD_TRAP(0x27) 122t_cpexc:TRAP_ENTRY(0x28, do_cp_exception) /* Co-Processor Exception */ 123t_dacce:SPARC_DFAULT /* Data Access Error */ 124t_hwdz: TRAP_ENTRY(0x2a, do_hw_divzero) /* Division by zero, you lose... */ 125t_dserr:BAD_TRAP(0x2b) /* Data Store Error */ 126t_daccm:BAD_TRAP(0x2c) /* Data Access MMU-Miss */ 127t_bad2d:BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 128t_bad32:BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 129t_bad37:BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 130t_iaccm:BAD_TRAP(0x3c) /* Instr Access MMU-Miss */ 131t_bad3d:BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) BAD_TRAP(0x41) 132t_bad42:BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) BAD_TRAP(0x46) 133t_bad47:BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) BAD_TRAP(0x4b) 134t_bad4c:BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) BAD_TRAP(0x50) 135t_bad51:BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 136t_bad56:BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 137t_bad5b:BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 138t_bad60:BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 139t_bad65:BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 140t_bad6a:BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 141t_bad6f:BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 142t_bad74:BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 143t_bad79:BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 144t_bad7e:BAD_TRAP(0x7e) BAD_TRAP(0x7f) 145t_bad80:BAD_TRAP(0x80) /* SunOS System Call */ 146t_sbkpt:BREAKPOINT_TRAP /* Software Breakpoint/KGDB */ 147t_divz: TRAP_ENTRY(0x82, do_hw_divzero) /* Divide by zero trap */ 148t_flwin:TRAP_ENTRY(0x83, do_flush_windows) /* Flush Windows Trap */ 149t_clwin:BAD_TRAP(0x84) /* Clean Windows Trap */ 150t_rchk: BAD_TRAP(0x85) /* Range Check */ 151t_funal:BAD_TRAP(0x86) /* Fix Unaligned Access Trap */ 152t_iovf: BAD_TRAP(0x87) /* Integer Overflow Trap */ 153t_bad88:BAD_TRAP(0x88) /* Slowaris System Call */ 154t_bad89:BAD_TRAP(0x89) /* Net-B.S. System Call */ 155t_bad8a:BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) BAD_TRAP(0x8d) BAD_TRAP(0x8e) 156t_bad8f:BAD_TRAP(0x8f) 157t_linux:LINUX_SYSCALL_TRAP /* Linux System Call */ 158t_bad91:BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) BAD_TRAP(0x95) 159t_bad96:BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) BAD_TRAP(0x9a) 160t_bad9b:BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) BAD_TRAP(0x9f) 161t_getcc:GETCC_TRAP /* Get Condition Codes */ 162t_setcc:SETCC_TRAP /* Set Condition Codes */ 163t_getpsr:GETPSR_TRAP /* Get PSR Register */ 164t_bada3:BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 165t_bada7:BAD_TRAP(0xa7) 166t_bada8:BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 167t_badac:BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 168t_badb1:BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 169t_badb6:BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 170t_badbb:BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 171t_badc0:BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 172t_badc5:BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 173t_badca:BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 174t_badcf:BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 175t_badd4:BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 176t_badd9:BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 177t_badde:BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 178t_bade3:BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 179t_bade8:BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 180t_baded:BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 181t_badf2:BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 182t_badf7:BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 183t_badfc:BAD_TRAP(0xfc) 184t_kgdb: KGDB_TRAP(0xfd) 185dbtrap: BAD_TRAP(0xfe) /* Debugger/PROM breakpoint #1 */ 186dbtrap2:BAD_TRAP(0xff) /* Debugger/PROM breakpoint #2 */ 187 188 .globl end_traptable 189end_traptable: 190 191#ifdef CONFIG_SMP 192 /* Trap tables for the other cpus. */ 193 .globl trapbase_cpu1, trapbase_cpu2, trapbase_cpu3 194trapbase_cpu1: 195 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction) 196 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler) 197 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler) 198 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT 199 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint) 200 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 201 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2) 202 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4) 203 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6) 204 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8) 205 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10) 206 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12) 207 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14) 208 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 209 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22) 210 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush) 211 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception) 212 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c) 213 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 214 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 215 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 216 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) 217 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) 218 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) 219 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) 220 BAD_TRAP(0x50) 221 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 222 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 223 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 224 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 225 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 226 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 227 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 228 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 229 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 230 BAD_TRAP(0x7e) BAD_TRAP(0x7f) 231 BAD_TRAP(0x80) 232 BREAKPOINT_TRAP 233 TRAP_ENTRY(0x82, do_hw_divzero) 234 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85) 235 BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88) 236 BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) 237 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f) 238 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) 239 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) 240 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) 241 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP 242 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 243 BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 244 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 245 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 246 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 247 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 248 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 249 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 250 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 251 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 252 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 253 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 254 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 255 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 256 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 257 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 258 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 259 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 260 BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff) 261 262trapbase_cpu2: 263 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction) 264 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler) 265 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler) 266 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT 267 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint) 268 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 269 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2) 270 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4) 271 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6) 272 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8) 273 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10) 274 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12) 275 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14) 276 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 277 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22) 278 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush) 279 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception) 280 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c) 281 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 282 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 283 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 284 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) 285 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) 286 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) 287 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) 288 BAD_TRAP(0x50) 289 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 290 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 291 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 292 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 293 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 294 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 295 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 296 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 297 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 298 BAD_TRAP(0x7e) BAD_TRAP(0x7f) 299 BAD_TRAP(0x80) 300 BREAKPOINT_TRAP 301 TRAP_ENTRY(0x82, do_hw_divzero) 302 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85) 303 BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88) 304 BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) 305 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f) 306 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) 307 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) 308 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) 309 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP 310 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 311 BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 312 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 313 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 314 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 315 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 316 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 317 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 318 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 319 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 320 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 321 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 322 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 323 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 324 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 325 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 326 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 327 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 328 BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff) 329 330trapbase_cpu3: 331 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction) 332 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler) 333 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler) 334 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT 335 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint) 336 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 337 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2) 338 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4) 339 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6) 340 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8) 341 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10) 342 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12) 343 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14) 344 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 345 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22) 346 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush) 347 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception) 348 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c) 349 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 350 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 351 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 352 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) 353 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) 354 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) 355 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) 356 BAD_TRAP(0x50) 357 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 358 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 359 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 360 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 361 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 362 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 363 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 364 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 365 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 366 BAD_TRAP(0x7e) BAD_TRAP(0x7f) 367 BAD_TRAP(0x80) 368 BREAKPOINT_TRAP 369 TRAP_ENTRY(0x82, do_hw_divzero) 370 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85) 371 BAD_TRAP(0x86) BAD_TRAP(0x87) BAD_TRAP(0x88) 372 BAD_TRAP(0x89) BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) 373 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f) 374 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) 375 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) 376 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) 377 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP 378 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 379 BAD_TRAP(0xa7) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 380 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 381 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 382 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 383 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 384 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 385 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 386 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 387 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 388 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 389 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 390 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 391 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 392 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 393 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 394 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 395 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 396 BAD_TRAP(0xfc) KGDB_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff) 397 398#endif 399 .align PAGE_SIZE 400 401/* This was the only reasonable way I could think of to properly align 402 * these page-table data structures. 403 */ 404 .globl pg0, pg1, pg2, pg3 405 .globl empty_bad_page 406 .globl empty_bad_page_table 407 .globl empty_zero_page 408 .globl swapper_pg_dir 409swapper_pg_dir: .skip PAGE_SIZE 410pg0: .skip PAGE_SIZE 411pg1: .skip PAGE_SIZE 412pg2: .skip PAGE_SIZE 413pg3: .skip PAGE_SIZE 414empty_bad_page: .skip PAGE_SIZE 415empty_bad_page_table: .skip PAGE_SIZE 416empty_zero_page: .skip PAGE_SIZE 417 418 .global root_flags 419 .global ram_flags 420 .global root_dev 421 .global sparc_ramdisk_image 422 .global sparc_ramdisk_size 423 424/* This stuff has to be in sync with SILO and other potential boot loaders 425 * Fields should be kept upward compatible and whenever any change is made, 426 * HdrS version should be incremented. 427 */ 428 .ascii "HdrS" 429 .word LINUX_VERSION_CODE 430 .half 0x0203 /* HdrS version */ 431root_flags: 432 .half 1 433root_dev: 434 .half 0 435ram_flags: 436 .half 0 437sparc_ramdisk_image: 438 .word 0 439sparc_ramdisk_size: 440 .word 0 441 .word reboot_command 442 .word 0, 0, 0 443 .word _end 444 445/* Cool, here we go. Pick up the romvec pointer in %o0 and stash it in 446 * %g7 and at prom_vector_p. And also quickly check whether we are on 447 * a v0, v2, or v3 prom. 448 */ 449gokernel: 450 /* Ok, it's nice to know, as early as possible, if we 451 * are already mapped where we expect to be in virtual 452 * memory. The Solaris /boot elf format bootloader 453 * will peek into our elf header and load us where 454 * we want to be, otherwise we have to re-map. 455 * 456 * Some boot loaders don't place the jmp'rs address 457 * in %o7, so we do a pc-relative call to a local 458 * label, then see what %o7 has. 459 */ 460 461 mov %o7, %g4 ! Save %o7 462 463 /* Jump to it, and pray... */ 464current_pc: 465 call 1f 466 nop 467 4681: 469 mov %o7, %g3 470 471 tst %o0 472 be no_sun4u_here 473 mov %g4, %o7 /* Previous %o7. */ 474 475 mov %o0, %l0 ! stash away romvec 476 mov %o0, %g7 ! put it here too 477 mov %o1, %l1 ! stash away debug_vec too 478 479 /* Ok, let's check out our run time program counter. */ 480 set current_pc, %g5 481 cmp %g3, %g5 482 be already_mapped 483 nop 484 485 /* %l6 will hold the offset we have to subtract 486 * from absolute symbols in order to access areas 487 * in our own image. If already mapped this is 488 * just plain zero, else it is KERNBASE. 489 */ 490 set KERNBASE, %l6 491 b copy_prom_lvl14 492 nop 493 494already_mapped: 495 mov 0, %l6 496 497 /* Copy over the Prom's level 14 clock handler. */ 498copy_prom_lvl14: 499#if 1 500 /* DJHR 501 * preserve our linked/calculated instructions 502 */ 503 set lvl14_save, %g1 504 set t_irq14, %g3 505 sub %g1, %l6, %g1 ! translate to physical 506 sub %g3, %l6, %g3 ! translate to physical 507 ldd [%g3], %g4 508 std %g4, [%g1] 509 ldd [%g3+8], %g4 510 std %g4, [%g1+8] 511#endif 512 rd %tbr, %g1 513 andn %g1, 0xfff, %g1 ! proms trap table base 514 or %g0, (0x1e<<4), %g2 ! offset to lvl14 intr 515 or %g1, %g2, %g2 516 set t_irq14, %g3 517 sub %g3, %l6, %g3 518 ldd [%g2], %g4 519 std %g4, [%g3] 520 ldd [%g2 + 0x8], %g4 521 std %g4, [%g3 + 0x8] ! Copy proms handler 522 523/* Must determine whether we are on a sun4c MMU, SRMMU, or SUN4/400 MUTANT 524 * MMU so we can remap ourselves properly. DON'T TOUCH %l0 thru %l5 in these 525 * remapping routines, we need their values afterwards! 526 */ 527 /* Now check whether we are already mapped, if we 528 * are we can skip all this garbage coming up. 529 */ 530copy_prom_done: 531 cmp %l6, 0 532 be go_to_highmem ! this will be a nop then 533 nop 534 535 set LOAD_ADDR, %g6 536 cmp %g7, %g6 537 bne remap_not_a_sun4 ! This is not a Sun4 538 nop 539 540 or %g0, 0x1, %g1 541 lduba [%g1] ASI_CONTROL, %g1 ! Only safe to try on Sun4. 542 subcc %g1, 0x24, %g0 ! Is this a mutant Sun4/400??? 543 be sun4_mutant_remap ! Ugh, it is... 544 nop 545 546 b sun4_normal_remap ! regular sun4, 2 level mmu 547 nop 548 549remap_not_a_sun4: 550 lda [%g0] ASI_M_MMUREGS, %g1 ! same as ASI_PTE on sun4c 551 and %g1, 0x1, %g1 ! Test SRMMU Enable bit ;-) 552 cmp %g1, 0x0 553 be sun4c_remap ! A sun4c MMU or normal Sun4 554 nop 555srmmu_remap: 556 /* First, check for a viking (TI) module. */ 557 set 0x40000000, %g2 558 rd %psr, %g3 559 and %g2, %g3, %g3 560 subcc %g3, 0x0, %g0 561 bz srmmu_nviking 562 nop 563 564 /* Figure out what kind of viking we are on. 565 * We need to know if we have to play with the 566 * AC bit and disable traps or not. 567 */ 568 569 /* I've only seen MicroSparc's on SparcClassics with this 570 * bit set. 571 */ 572 set 0x800, %g2 573 lda [%g0] ASI_M_MMUREGS, %g3 ! peek in the control reg 574 and %g2, %g3, %g3 575 subcc %g3, 0x0, %g0 576 bnz srmmu_nviking ! is in mbus mode 577 nop 578 579 rd %psr, %g3 ! DO NOT TOUCH %g3 580 andn %g3, PSR_ET, %g2 581 wr %g2, 0x0, %psr 582 WRITE_PAUSE 583 584 /* Get context table pointer, then convert to 585 * a physical address, which is 36 bits. 586 */ 587 set AC_M_CTPR, %g4 588 lda [%g4] ASI_M_MMUREGS, %g4 589 sll %g4, 0x4, %g4 ! We use this below 590 ! DO NOT TOUCH %g4 591 592 /* Set the AC bit in the Viking's MMU control reg. */ 593 lda [%g0] ASI_M_MMUREGS, %g5 ! DO NOT TOUCH %g5 594 set 0x8000, %g6 ! AC bit mask 595 or %g5, %g6, %g6 ! Or it in... 596 sta %g6, [%g0] ASI_M_MMUREGS ! Close your eyes... 597 598 /* Grrr, why does it seem like every other load/store 599 * on the sun4m is in some ASI space... 600 * Fine with me, let's get the pointer to the level 1 601 * page table directory and fetch its entry. 602 */ 603 lda [%g4] ASI_M_BYPASS, %o1 ! This is a level 1 ptr 604 srl %o1, 0x4, %o1 ! Clear low 4 bits 605 sll %o1, 0x8, %o1 ! Make physical 606 607 /* Ok, pull in the PTD. */ 608 lda [%o1] ASI_M_BYPASS, %o2 ! This is the 0x0 16MB pgd 609 610 /* Calculate to KERNBASE entry. */ 611 add %o1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %o3 612 613 /* Poke the entry into the calculated address. */ 614 sta %o2, [%o3] ASI_M_BYPASS 615 616 /* I don't get it Sun, if you engineered all these 617 * boot loaders and the PROM (thank you for the debugging 618 * features btw) why did you not have them load kernel 619 * images up in high address space, since this is necessary 620 * for ABI compliance anyways? Does this low-mapping provide 621 * enhanced interoperability? 622 * 623 * "The PROM is the computer." 624 */ 625 626 /* Ok, restore the MMU control register we saved in %g5 */ 627 sta %g5, [%g0] ASI_M_MMUREGS ! POW... ouch 628 629 /* Turn traps back on. We saved it in %g3 earlier. */ 630 wr %g3, 0x0, %psr ! tick tock, tick tock 631 632 /* Now we burn precious CPU cycles due to bad engineering. */ 633 WRITE_PAUSE 634 635 /* Wow, all that just to move a 32-bit value from one 636 * place to another... Jump to high memory. 637 */ 638 b go_to_highmem 639 nop 640 641 /* This works on viking's in Mbus mode and all 642 * other MBUS modules. It is virtually the same as 643 * the above madness sans turning traps off and flipping 644 * the AC bit. 645 */ 646srmmu_nviking: 647 set AC_M_CTPR, %g1 648 lda [%g1] ASI_M_MMUREGS, %g1 ! get ctx table ptr 649 sll %g1, 0x4, %g1 ! make physical addr 650 lda [%g1] ASI_M_BYPASS, %g1 ! ptr to level 1 pg_table 651 srl %g1, 0x4, %g1 652 sll %g1, 0x8, %g1 ! make phys addr for l1 tbl 653 654 lda [%g1] ASI_M_BYPASS, %g2 ! get level1 entry for 0x0 655 add %g1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %g3 656 sta %g2, [%g3] ASI_M_BYPASS ! place at KERNBASE entry 657 b go_to_highmem 658 nop ! wheee.... 659 660 /* This remaps the kernel on Sun4/4xx machines 661 * that have the Sun Mutant Three Level MMU. 662 * It's like a platypus, Sun didn't have the 663 * SRMMU in conception so they kludged the three 664 * level logic in the regular Sun4 MMU probably. 665 * 666 * Basically, you take each entry in the top level 667 * directory that maps the low 3MB starting at 668 * address zero and put the mapping in the KERNBASE 669 * slots. These top level pgd's are called regmaps. 670 */ 671sun4_mutant_remap: 672 or %g0, %g0, %g3 ! source base 673 sethi %hi(KERNBASE), %g4 ! destination base 674 or %g4, %lo(KERNBASE), %g4 675 sethi %hi(0x300000), %g5 676 or %g5, %lo(0x300000), %g5 ! upper bound 3MB 677 or %g0, 0x1, %l6 678 sll %l6, 24, %l6 ! Regmap mapping size 679 add %g3, 0x2, %g3 ! Base magic 680 add %g4, 0x2, %g4 ! Base magic 681 682 /* Main remapping loop on Sun4-Mutant-MMU. 683 * "I am not an animal..." -Famous Mutant Person 684 */ 685sun4_mutant_loop: 686 lduha [%g3] ASI_REGMAP, %g2 ! Get lower entry 687 stha %g2, [%g4] ASI_REGMAP ! Store in high entry 688 add %g4, %l6, %g4 ! Move up high memory ptr 689 subcc %g3, %g5, %g0 ! Reached our limit? 690 blu sun4_mutant_loop ! Nope, loop again 691 add %g3, %l6, %g3 ! delay, Move up low ptr 692 b go_to_highmem ! Jump to high memory. 693 nop 694 695 /* The following is for non-4/4xx sun4 MMU's. */ 696sun4_normal_remap: 697 mov 0, %g3 ! source base 698 set KERNBASE, %g4 ! destination base 699 set 0x300000, %g5 ! upper bound 3MB 700 mov 1, %l6 701 sll %l6, 18, %l6 ! sun4 mmu segmap size 702sun4_normal_loop: 703 lduha [%g3] ASI_SEGMAP, %g6 ! load phys_seg 704 stha %g6, [%g4] ASI_SEGMAP ! stort new virt mapping 705 add %g3, %l6, %g3 ! increment source pointer 706 subcc %g3, %g5, %g0 ! reached limit? 707 blu sun4_normal_loop ! nope, loop again 708 add %g4, %l6, %g4 ! delay, increment dest ptr 709 b go_to_highmem 710 nop 711 712 /* The following works for Sun4c MMU's */ 713sun4c_remap: 714 mov 0, %g3 ! source base 715 set KERNBASE, %g4 ! destination base 716 set 0x300000, %g5 ! upper bound 3MB 717 mov 1, %l6 718 sll %l6, 18, %l6 ! sun4c mmu segmap size 719sun4c_remap_loop: 720 lda [%g3] ASI_SEGMAP, %g6 ! load phys_seg 721 sta %g6, [%g4] ASI_SEGMAP ! store new virt mapping 722 add %g3, %l6, %g3 ! Increment source ptr 723 subcc %g3, %g5, %g0 ! Reached limit? 724 bl sun4c_remap_loop ! Nope, loop again 725 add %g4, %l6, %g4 ! delay, Increment dest ptr 726 727/* Now do a non-relative jump so that PC is in high-memory */ 728go_to_highmem: 729 set execute_in_high_mem, %g1 730 jmpl %g1, %g0 731 nop 732 733/* The code above should be at beginning and we have to take care about 734 * short jumps, as branching to .init.text section from .text is usually 735 * impossible */ 736 __INIT 737/* Acquire boot time privileged register values, this will help debugging. 738 * I figure out and store nwindows and nwindowsm1 later on. 739 */ 740execute_in_high_mem: 741 mov %l0, %o0 ! put back romvec 742 mov %l1, %o1 ! and debug_vec 743 744 sethi %hi(prom_vector_p), %g1 745 st %o0, [%g1 + %lo(prom_vector_p)] 746 747 sethi %hi(linux_dbvec), %g1 748 st %o1, [%g1 + %lo(linux_dbvec)] 749 750 ld [%o0 + 0x4], %o3 751 and %o3, 0x3, %o5 ! get the version 752 753 cmp %o3, 0x2 ! a v2 prom? 754 be found_version 755 nop 756 757 /* paul@sfe.com.au */ 758 cmp %o3, 0x3 ! a v3 prom? 759 be found_version 760 nop 761 762/* Old sun4's pass our load address into %o0 instead of the prom 763 * pointer. On sun4's you have to hard code the romvec pointer into 764 * your code. Sun probably still does that because they don't even 765 * trust their own "OpenBoot" specifications. 766 */ 767 set LOAD_ADDR, %g6 768 cmp %o0, %g6 ! an old sun4? 769 be sun4_init 770 nop 771 772found_version: 773/* Get the machine type via the mysterious romvec node operations. */ 774 775 add %g7, 0x1c, %l1 776 ld [%l1], %l0 777 ld [%l0], %l0 778 call %l0 779 or %g0, %g0, %o0 ! next_node(0) = first_node 780 or %o0, %g0, %g6 781 782 sethi %hi(cputypvar), %o1 ! First node has cpu-arch 783 or %o1, %lo(cputypvar), %o1 784 sethi %hi(cputypval), %o2 ! information, the string 785 or %o2, %lo(cputypval), %o2 786 ld [%l1], %l0 ! 'compatibility' tells 787 ld [%l0 + 0xc], %l0 ! that we want 'sun4x' where 788 call %l0 ! x is one of '', 'c', 'm', 789 nop ! 'd' or 'e'. %o2 holds pointer 790 ! to a buf where above string 791 ! will get stored by the prom. 792 793 subcc %o0, %g0, %g0 794 bpos got_prop ! Got the property 795 nop 796 797 or %g6, %g0, %o0 798 sethi %hi(cputypvar_sun4m), %o1 799 or %o1, %lo(cputypvar_sun4m), %o1 800 sethi %hi(cputypval), %o2 801 or %o2, %lo(cputypval), %o2 802 ld [%l1], %l0 803 ld [%l0 + 0xc], %l0 804 call %l0 805 nop 806 807got_prop: 808#ifdef CONFIG_SPARC_LEON 809 /* no cpu-type check is needed, it is a SPARC-LEON */ 810 811 sethi %hi(boot_cpu_id), %g2 ! boot-cpu index 812 813#ifdef CONFIG_SMP 814 ldub [%g2 + %lo(boot_cpu_id)], %g1 815 cmp %g1, 0xff ! unset means first CPU 816 bne leon_smp_cpu_startup ! continue only with master 817 nop 818#endif 819 /* Get CPU-ID from most significant 4-bit of ASR17 */ 820 rd %asr17, %g1 821 srl %g1, 28, %g1 822 823 /* Update boot_cpu_id only on boot cpu */ 824 stub %g1, [%g2 + %lo(boot_cpu_id)] 825 826 ba sun4c_continue_boot 827 nop 828#endif 829 set cputypval, %o2 830 ldub [%o2 + 0x4], %l1 831 832 cmp %l1, ' ' 833 be 1f 834 cmp %l1, 'c' 835 be 1f 836 cmp %l1, 'm' 837 be 1f 838 cmp %l1, 's' 839 be 1f 840 cmp %l1, 'd' 841 be 1f 842 cmp %l1, 'e' 843 be no_sun4e_here ! Could be a sun4e. 844 nop 845 b no_sun4u_here ! AIEEE, a V9 sun4u... Get our BIG BROTHER kernel :)) 846 nop 847 8481: set cputypval, %l1 849 ldub [%l1 + 0x4], %l1 850 cmp %l1, 'm' ! Test for sun4d, sun4e ? 851 be sun4m_init 852 cmp %l1, 's' ! Treat sun4s as sun4m 853 be sun4m_init 854 cmp %l1, 'd' ! Let us see how the beast will die 855 be sun4d_init 856 nop 857 858 /* Jump into mmu context zero. */ 859 set AC_CONTEXT, %g1 860 stba %g0, [%g1] ASI_CONTROL 861 862 b sun4c_continue_boot 863 nop 864 865/* CPUID in bootbus can be found at PA 0xff0140000 */ 866#define SUN4D_BOOTBUS_CPUID 0xf0140000 867 868sun4d_init: 869 /* Need to patch call to handler_irq */ 870 set patch_handler_irq, %g4 871 set sun4d_handler_irq, %g5 872 sethi %hi(0x40000000), %g3 ! call 873 sub %g5, %g4, %g5 874 srl %g5, 2, %g5 875 or %g5, %g3, %g5 876 st %g5, [%g4] 877 878#ifdef CONFIG_SMP 879 /* Get our CPU id out of bootbus */ 880 set SUN4D_BOOTBUS_CPUID, %g3 881 lduba [%g3] ASI_M_CTL, %g3 882 and %g3, 0xf8, %g3 883 srl %g3, 3, %g4 884 sta %g4, [%g0] ASI_M_VIKING_TMP1 885 sethi %hi(boot_cpu_id), %g5 886 stb %g4, [%g5 + %lo(boot_cpu_id)] 887#endif 888 889 /* Fall through to sun4m_init */ 890 891sun4m_init: 892 /* XXX Fucking Cypress... */ 893 lda [%g0] ASI_M_MMUREGS, %g5 894 srl %g5, 28, %g4 895 896 cmp %g4, 1 897 bne 1f 898 srl %g5, 24, %g4 899 900 and %g4, 0xf, %g4 901 cmp %g4, 7 /* This would be a HyperSparc. */ 902 903 bne 2f 904 nop 905 9061: 907 908#define PATCH_IT(dst, src) \ 909 set (dst), %g5; \ 910 set (src), %g4; \ 911 ld [%g4], %g3; \ 912 st %g3, [%g5]; \ 913 ld [%g4+0x4], %g3; \ 914 st %g3, [%g5+0x4]; 915 916 /* Signed multiply. */ 917 PATCH_IT(.mul, .mul_patch) 918 PATCH_IT(.mul+0x08, .mul_patch+0x08) 919 920 /* Signed remainder. */ 921 PATCH_IT(.rem, .rem_patch) 922 PATCH_IT(.rem+0x08, .rem_patch+0x08) 923 PATCH_IT(.rem+0x10, .rem_patch+0x10) 924 PATCH_IT(.rem+0x18, .rem_patch+0x18) 925 PATCH_IT(.rem+0x20, .rem_patch+0x20) 926 PATCH_IT(.rem+0x28, .rem_patch+0x28) 927 928 /* Signed division. */ 929 PATCH_IT(.div, .div_patch) 930 PATCH_IT(.div+0x08, .div_patch+0x08) 931 PATCH_IT(.div+0x10, .div_patch+0x10) 932 PATCH_IT(.div+0x18, .div_patch+0x18) 933 PATCH_IT(.div+0x20, .div_patch+0x20) 934 935 /* Unsigned multiply. */ 936 PATCH_IT(.umul, .umul_patch) 937 PATCH_IT(.umul+0x08, .umul_patch+0x08) 938 939 /* Unsigned remainder. */ 940 PATCH_IT(.urem, .urem_patch) 941 PATCH_IT(.urem+0x08, .urem_patch+0x08) 942 PATCH_IT(.urem+0x10, .urem_patch+0x10) 943 PATCH_IT(.urem+0x18, .urem_patch+0x18) 944 945 /* Unsigned division. */ 946 PATCH_IT(.udiv, .udiv_patch) 947 PATCH_IT(.udiv+0x08, .udiv_patch+0x08) 948 PATCH_IT(.udiv+0x10, .udiv_patch+0x10) 949 950#undef PATCH_IT 951 952/* Ok, the PROM could have done funny things and apple cider could still 953 * be sitting in the fault status/address registers. Read them all to 954 * clear them so we don't get magic faults later on. 955 */ 956/* This sucks, apparently this makes Vikings call prom panic, will fix later */ 9572: 958 rd %psr, %o1 959 srl %o1, 28, %o1 ! Get a type of the CPU 960 961 subcc %o1, 4, %g0 ! TI: Viking or MicroSPARC 962 be sun4c_continue_boot 963 nop 964 965 set AC_M_SFSR, %o0 966 lda [%o0] ASI_M_MMUREGS, %g0 967 set AC_M_SFAR, %o0 968 lda [%o0] ASI_M_MMUREGS, %g0 969 970 /* Fujitsu MicroSPARC-II has no asynchronous flavors of FARs */ 971 subcc %o1, 0, %g0 972 be sun4c_continue_boot 973 nop 974 975 set AC_M_AFSR, %o0 976 lda [%o0] ASI_M_MMUREGS, %g0 977 set AC_M_AFAR, %o0 978 lda [%o0] ASI_M_MMUREGS, %g0 979 nop 980 981 982sun4c_continue_boot: 983 984 985/* Aieee, now set PC and nPC, enable traps, give ourselves a stack and it's 986 * show-time! 987 */ 988 989 sethi %hi(cputyp), %o0 990 st %g4, [%o0 + %lo(cputyp)] 991 992 /* Turn on Supervisor, EnableFloating, and all the PIL bits. 993 * Also puts us in register window zero with traps off. 994 */ 995 set (PSR_PS | PSR_S | PSR_PIL | PSR_EF), %g2 996 wr %g2, 0x0, %psr 997 WRITE_PAUSE 998 999 /* I want a kernel stack NOW! */ 1000 set init_thread_union, %g1 1001 set (THREAD_SIZE - STACKFRAME_SZ), %g2 1002 add %g1, %g2, %sp 1003 mov 0, %fp /* And for good luck */ 1004 1005 /* Zero out our BSS section. */ 1006 set __bss_start , %o0 ! First address of BSS 1007 set _end , %o1 ! Last address of BSS 1008 add %o0, 0x1, %o0 10091: 1010 stb %g0, [%o0] 1011 subcc %o0, %o1, %g0 1012 bl 1b 1013 add %o0, 0x1, %o0 1014 1015 /* If boot_cpu_id has not been setup by machine specific 1016 * init-code above we default it to zero. 1017 */ 1018 sethi %hi(boot_cpu_id), %g2 1019 ldub [%g2 + %lo(boot_cpu_id)], %g3 1020 cmp %g3, 0xff 1021 bne 1f 1022 nop 1023 mov %g0, %g3 1024 stub %g3, [%g2 + %lo(boot_cpu_id)] 1025 10261: /* boot_cpu_id set. calculate boot_cpu_id4 = boot_cpu_id*4 */ 1027 sll %g3, 2, %g3 1028 sethi %hi(boot_cpu_id4), %g2 1029 stub %g3, [%g2 + %lo(boot_cpu_id4)] 1030 1031 /* Initialize the uwinmask value for init task just in case. 1032 * But first make current_set[boot_cpu_id] point to something useful. 1033 */ 1034 set init_thread_union, %g6 1035 set current_set, %g2 1036#ifdef CONFIG_SMP 1037 st %g6, [%g2] 1038 add %g2, %g3, %g2 1039#endif 1040 st %g6, [%g2] 1041 1042 st %g0, [%g6 + TI_UWINMASK] 1043 1044/* Compute NWINDOWS and stash it away. Now uses %wim trick explained 1045 * in the V8 manual. Ok, this method seems to work, Sparc is cool... 1046 * No, it doesn't work, have to play the save/readCWP/restore trick. 1047 */ 1048 1049 wr %g0, 0x0, %wim ! so we do not get a trap 1050 WRITE_PAUSE 1051 1052 save 1053 1054 rd %psr, %g3 1055 1056 restore 1057 1058 and %g3, 0x1f, %g3 1059 add %g3, 0x1, %g3 1060 1061 mov 2, %g1 1062 wr %g1, 0x0, %wim ! make window 1 invalid 1063 WRITE_PAUSE 1064 1065 cmp %g3, 0x7 1066 bne 2f 1067 nop 1068 1069 /* Adjust our window handling routines to 1070 * do things correctly on 7 window Sparcs. 1071 */ 1072 1073#define PATCH_INSN(src, dest) \ 1074 set src, %g5; \ 1075 set dest, %g2; \ 1076 ld [%g5], %g4; \ 1077 st %g4, [%g2]; 1078 1079 /* Patch for window spills... */ 1080 PATCH_INSN(spnwin_patch1_7win, spnwin_patch1) 1081 PATCH_INSN(spnwin_patch2_7win, spnwin_patch2) 1082 PATCH_INSN(spnwin_patch3_7win, spnwin_patch3) 1083 1084 /* Patch for window fills... */ 1085 PATCH_INSN(fnwin_patch1_7win, fnwin_patch1) 1086 PATCH_INSN(fnwin_patch2_7win, fnwin_patch2) 1087 1088 /* Patch for trap entry setup... */ 1089 PATCH_INSN(tsetup_7win_patch1, tsetup_patch1) 1090 PATCH_INSN(tsetup_7win_patch2, tsetup_patch2) 1091 PATCH_INSN(tsetup_7win_patch3, tsetup_patch3) 1092 PATCH_INSN(tsetup_7win_patch4, tsetup_patch4) 1093 PATCH_INSN(tsetup_7win_patch5, tsetup_patch5) 1094 PATCH_INSN(tsetup_7win_patch6, tsetup_patch6) 1095 1096 /* Patch for returning from traps... */ 1097 PATCH_INSN(rtrap_7win_patch1, rtrap_patch1) 1098 PATCH_INSN(rtrap_7win_patch2, rtrap_patch2) 1099 PATCH_INSN(rtrap_7win_patch3, rtrap_patch3) 1100 PATCH_INSN(rtrap_7win_patch4, rtrap_patch4) 1101 PATCH_INSN(rtrap_7win_patch5, rtrap_patch5) 1102 1103 /* Patch for killing user windows from the register file. */ 1104 PATCH_INSN(kuw_patch1_7win, kuw_patch1) 1105 1106 /* Now patch the kernel window flush sequences. 1107 * This saves 2 traps on every switch and fork. 1108 */ 1109 set 0x01000000, %g4 1110 set flush_patch_one, %g5 1111 st %g4, [%g5 + 0x18] 1112 st %g4, [%g5 + 0x1c] 1113 set flush_patch_two, %g5 1114 st %g4, [%g5 + 0x18] 1115 st %g4, [%g5 + 0x1c] 1116 set flush_patch_three, %g5 1117 st %g4, [%g5 + 0x18] 1118 st %g4, [%g5 + 0x1c] 1119 set flush_patch_four, %g5 1120 st %g4, [%g5 + 0x18] 1121 st %g4, [%g5 + 0x1c] 1122 set flush_patch_exception, %g5 1123 st %g4, [%g5 + 0x18] 1124 st %g4, [%g5 + 0x1c] 1125 set flush_patch_switch, %g5 1126 st %g4, [%g5 + 0x18] 1127 st %g4, [%g5 + 0x1c] 1128 11292: 1130 sethi %hi(nwindows), %g4 1131 st %g3, [%g4 + %lo(nwindows)] ! store final value 1132 sub %g3, 0x1, %g3 1133 sethi %hi(nwindowsm1), %g4 1134 st %g3, [%g4 + %lo(nwindowsm1)] 1135 1136 /* Here we go, start using Linux's trap table... */ 1137 set trapbase, %g3 1138 wr %g3, 0x0, %tbr 1139 WRITE_PAUSE 1140 1141 /* Finally, turn on traps so that we can call c-code. */ 1142 rd %psr, %g3 1143 wr %g3, 0x0, %psr 1144 WRITE_PAUSE 1145 1146 wr %g3, PSR_ET, %psr 1147 WRITE_PAUSE 1148 1149 /* First we call prom_init() to set up PROMLIB, then 1150 * off to start_kernel(). 1151 */ 1152 1153 sethi %hi(prom_vector_p), %g5 1154 ld [%g5 + %lo(prom_vector_p)], %o0 1155 call prom_init 1156 nop 1157 1158 call start_kernel 1159 nop 1160 1161 /* We should not get here. */ 1162 call halt_me 1163 nop 1164 1165sun4_init: 1166 sethi %hi(SUN4_PROM_VECTOR+0x84), %o1 1167 ld [%o1 + %lo(SUN4_PROM_VECTOR+0x84)], %o1 1168 set sun4_notsup, %o0 1169 call %o1 /* printf */ 1170 nop 1171 sethi %hi(SUN4_PROM_VECTOR+0xc4), %o1 1172 ld [%o1 + %lo(SUN4_PROM_VECTOR+0xc4)], %o1 1173 call %o1 /* exittomon */ 1174 nop 11751: ba 1b ! Cannot exit into KMON 1176 nop 1177 1178no_sun4e_here: 1179 ld [%g7 + 0x68], %o1 1180 set sun4e_notsup, %o0 1181 call %o1 1182 nop 1183 b halt_me 1184 nop 1185 1186 __INITDATA 1187 1188sun4u_1: 1189 .asciz "finddevice" 1190 .align 4 1191sun4u_2: 1192 .asciz "/chosen" 1193 .align 4 1194sun4u_3: 1195 .asciz "getprop" 1196 .align 4 1197sun4u_4: 1198 .asciz "stdout" 1199 .align 4 1200sun4u_5: 1201 .asciz "write" 1202 .align 4 1203sun4u_6: 1204 .asciz "\n\rOn sun4u you have to use UltraLinux (64bit) kernel\n\rand not a 32bit sun4[cdem] version\n\r\n\r" 1205sun4u_6e: 1206 .align 4 1207sun4u_7: 1208 .asciz "exit" 1209 .align 8 1210sun4u_a1: 1211 .word 0, sun4u_1, 0, 1, 0, 1, 0, sun4u_2, 0 1212sun4u_r1: 1213 .word 0 1214sun4u_a2: 1215 .word 0, sun4u_3, 0, 4, 0, 1, 0 1216sun4u_i2: 1217 .word 0, 0, sun4u_4, 0, sun4u_1, 0, 8, 0 1218sun4u_r2: 1219 .word 0 1220sun4u_a3: 1221 .word 0, sun4u_5, 0, 3, 0, 1, 0 1222sun4u_i3: 1223 .word 0, 0, sun4u_6, 0, sun4u_6e - sun4u_6 - 1, 0 1224sun4u_r3: 1225 .word 0 1226sun4u_a4: 1227 .word 0, sun4u_7, 0, 0, 0, 0 1228sun4u_r4: 1229 1230 __INIT 1231no_sun4u_here: 1232 set sun4u_a1, %o0 1233 set current_pc, %l2 1234 cmp %l2, %g3 1235 be 1f 1236 mov %o4, %l0 1237 sub %g3, %l2, %l6 1238 add %o0, %l6, %o0 1239 mov %o0, %l4 1240 mov sun4u_r4 - sun4u_a1, %l3 1241 ld [%l4], %l5 12422: 1243 add %l4, 4, %l4 1244 cmp %l5, %l2 1245 add %l5, %l6, %l5 1246 bgeu,a 3f 1247 st %l5, [%l4 - 4] 12483: 1249 subcc %l3, 4, %l3 1250 bne 2b 1251 ld [%l4], %l5 12521: 1253 call %l0 1254 mov %o0, %l1 1255 1256 ld [%l1 + (sun4u_r1 - sun4u_a1)], %o1 1257 add %l1, (sun4u_a2 - sun4u_a1), %o0 1258 call %l0 1259 st %o1, [%o0 + (sun4u_i2 - sun4u_a2)] 1260 1261 ld [%l1 + (sun4u_1 - sun4u_a1)], %o1 1262 add %l1, (sun4u_a3 - sun4u_a1), %o0 1263 call %l0 1264 st %o1, [%o0 + (sun4u_i3 - sun4u_a3)] 1265 1266 call %l0 1267 add %l1, (sun4u_a4 - sun4u_a1), %o0 1268 1269 /* Not reached */ 1270halt_me: 1271 ld [%g7 + 0x74], %o0 1272 call %o0 ! Get us out of here... 1273 nop ! Apparently Solaris is better. 1274 1275/* Ok, now we continue in the .data/.text sections */ 1276 1277 .data 1278 .align 4 1279 1280/* 1281 * Fill up the prom vector, note in particular the kind first element, 1282 * no joke. I don't need all of them in here as the entire prom vector 1283 * gets initialized in c-code so all routines can use it. 1284 */ 1285 1286prom_vector_p: 1287 .word 0 1288 1289/* We calculate the following at boot time, window fills/spills and trap entry 1290 * code uses these to keep track of the register windows. 1291 */ 1292 1293 .align 4 1294 .globl nwindows 1295 .globl nwindowsm1 1296nwindows: 1297 .word 8 1298nwindowsm1: 1299 .word 7 1300 1301/* Boot time debugger vector value. We need this later on. */ 1302 1303 .align 4 1304 .globl linux_dbvec 1305linux_dbvec: 1306 .word 0 1307 .word 0 1308 1309 .align 8 1310 1311 .globl lvl14_save 1312lvl14_save: 1313 .word 0 1314 .word 0 1315 .word 0 1316 .word 0 1317 .word t_irq14 1318 1319 .section ".fixup",#alloc,#execinstr 1320 .globl __ret_efault 1321__ret_efault: 1322 ret 1323 restore %g0, -EFAULT, %o0 1324