Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/arch/sparc/kernel/head.S
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
1 /* $Id: head.S,v 1.105 2001/08/12 09:08:56 davem Exp $ 2 * head.S: The initial boot code for the Sparc port of Linux. 3 * 4 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) 5 * Copyright (C) 1995,1999 Pete Zaitcev (zaitcev@yahoo.com) 6 * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx) 7 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) 8 * Copyright (C) 1997 Michael A. Griffith (grif@acm.org) 9 * 10 * CompactPCI platform by Eric Brower, 1999. 11 */ 12 13 #include <linux/version.h> 14 #include <linux/config.h> 15 #include <linux/init.h> 16 17 #include <asm/cprefix.h> 18 #include <asm/head.h> 19 #include <asm/asi.h> 20 #include <asm/contregs.h> 21 #include <asm/ptrace.h> 22 #include <asm/psr.h> 23 #include <asm/page.h> 24 #include <asm/kdebug.h> 25 #include <asm/winmacro.h> 26 #include <asm/errno.h> 27 28 .data 29 /* 30 * The following are used with the prom_vector node-ops to figure out 31 * the cpu-type 32 */ 33 34 .align 4 35 .globl C_LABEL(cputyp) 36 C_LABEL(cputyp): 37 .word 1 38 39 .align 4 40 .globl C_LABEL(cputypval) 41 C_LABEL(cputypval): 42 .asciz "sun4c" 43 .ascii " " 44 45 C_LABEL(cputypvalend): 46 C_LABEL(cputypvallen) = C_LABEL(cputypvar) - C_LABEL(cputypval) 47 48 .align 4 49 /* 50 * Sun people can't spell worth damn. "compatability" indeed. 51 * At least we *know* we can't spell, and use a spell-checker. 52 */ 53 54 /* Uh, actually Linus it is I who cannot spell. Too much murky 55 * Sparc assembly will do this to ya. 56 */ 57 C_LABEL(cputypvar): 58 .asciz "compatability" 59 60 /* Tested on SS-5, SS-10. Probably someone at Sun applied a spell-checker. */ 61 .align 4 62 C_LABEL(cputypvar_sun4m): 63 .asciz "compatible" 64 65 .align 4 66 67 #ifndef CONFIG_SUN4 68 sun4_notsup: 69 .asciz "Sparc-Linux sun4 needs a specially compiled kernel, turn CONFIG_SUN4 on.\n\n" 70 .align 4 71 #else 72 sun4cdm_notsup: 73 .asciz "Kernel compiled with CONFIG_SUN4 cannot run on SUN4C/SUN4M/SUN4D\nTurn CONFIG_SUN4 off.\n\n" 74 .align 4 75 #endif 76 77 sun4e_notsup: 78 .asciz "Sparc-Linux sun4e support does not exist\n\n" 79 .align 4 80 81 #ifndef CONFIG_SUNOS_EMUL 82 #undef SUNOS_SYSCALL_TRAP 83 #define SUNOS_SYSCALL_TRAP SUNOS_NO_SYSCALL_TRAP 84 #endif 85 86 /* The Sparc trap table, bootloader gives us control at _start. */ 87 .text 88 .globl start, _stext, _start, __stext 89 .globl C_LABEL(trapbase) 90 _start: /* danger danger */ 91 __stext: 92 _stext: 93 start: 94 C_LABEL(trapbase): 95 #ifdef CONFIG_SMP 96 C_LABEL(trapbase_cpu0): 97 #endif 98 /* We get control passed to us here at t_zero. */ 99 t_zero: b gokernel; nop; nop; nop; 100 t_tflt: SPARC_TFAULT /* Inst. Access Exception */ 101 t_bins: TRAP_ENTRY(0x2, bad_instruction) /* Illegal Instruction */ 102 t_pins: TRAP_ENTRY(0x3, priv_instruction) /* Privileged Instruction */ 103 t_fpd: TRAP_ENTRY(0x4, fpd_trap_handler) /* Floating Point Disabled */ 104 t_wovf: WINDOW_SPILL /* Window Overflow */ 105 t_wunf: WINDOW_FILL /* Window Underflow */ 106 t_mna: TRAP_ENTRY(0x7, mna_handler) /* Memory Address Not Aligned */ 107 t_fpe: TRAP_ENTRY(0x8, fpe_trap_handler) /* Floating Point Exception */ 108 t_dflt: SPARC_DFAULT /* Data Miss Exception */ 109 t_tio: TRAP_ENTRY(0xa, do_tag_overflow) /* Tagged Instruction Ovrflw */ 110 t_wpt: TRAP_ENTRY(0xb, do_watchpoint) /* Watchpoint Detected */ 111 t_badc: BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 112 t_irq1: TRAP_ENTRY_INTERRUPT(1) /* IRQ Software/SBUS Level 1 */ 113 t_irq2: TRAP_ENTRY_INTERRUPT(2) /* IRQ SBUS Level 2 */ 114 t_irq3: TRAP_ENTRY_INTERRUPT(3) /* IRQ SCSI/DMA/SBUS Level 3 */ 115 t_irq4: TRAP_ENTRY_INTERRUPT(4) /* IRQ Software Level 4 */ 116 t_irq5: TRAP_ENTRY_INTERRUPT(5) /* IRQ SBUS/Ethernet Level 5 */ 117 t_irq6: TRAP_ENTRY_INTERRUPT(6) /* IRQ Software Level 6 */ 118 t_irq7: TRAP_ENTRY_INTERRUPT(7) /* IRQ Video/SBUS Level 5 */ 119 t_irq8: TRAP_ENTRY_INTERRUPT(8) /* IRQ SBUS Level 6 */ 120 t_irq9: TRAP_ENTRY_INTERRUPT(9) /* IRQ SBUS Level 7 */ 121 t_irq10:TRAP_ENTRY_INTERRUPT(10) /* IRQ Timer #1 (one we use) */ 122 t_irq11:TRAP_ENTRY_INTERRUPT(11) /* IRQ Floppy Intr. */ 123 t_irq12:TRAP_ENTRY_INTERRUPT(12) /* IRQ Zilog serial chip */ 124 t_irq13:TRAP_ENTRY_INTERRUPT(13) /* IRQ Audio Intr. */ 125 t_irq14:TRAP_ENTRY_INTERRUPT(14) /* IRQ Timer #2 */ 126 .globl t_nmi 127 #ifndef CONFIG_SMP 128 t_nmi: NMI_TRAP /* Level 15 (NMI) */ 129 #else 130 t_nmi: TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 131 #endif 132 t_racc: TRAP_ENTRY(0x20, do_reg_access) /* General Register Access Error */ 133 t_iacce:BAD_TRAP(0x21) /* Instr Access Error */ 134 t_bad22:BAD_TRAP(0x22) BAD_TRAP(0x23) 135 t_cpdis:TRAP_ENTRY(0x24, do_cp_disabled) /* Co-Processor Disabled */ 136 t_uflsh:SKIP_TRAP(0x25, unimp_flush) /* Unimplemented FLUSH inst. */ 137 t_bad26:BAD_TRAP(0x26) BAD_TRAP(0x27) 138 t_cpexc:TRAP_ENTRY(0x28, do_cp_exception) /* Co-Processor Exception */ 139 t_dacce:SPARC_DFAULT /* Data Access Error */ 140 t_hwdz: TRAP_ENTRY(0x2a, do_hw_divzero) /* Division by zero, you lose... */ 141 t_dserr:BAD_TRAP(0x2b) /* Data Store Error */ 142 t_daccm:BAD_TRAP(0x2c) /* Data Access MMU-Miss */ 143 t_bad2d:BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 144 t_bad32:BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 145 t_bad37:BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 146 t_iaccm:BAD_TRAP(0x3c) /* Instr Access MMU-Miss */ 147 t_bad3d:BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) BAD_TRAP(0x41) 148 t_bad42:BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) BAD_TRAP(0x46) 149 t_bad47:BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) BAD_TRAP(0x4b) 150 t_bad4c:BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) BAD_TRAP(0x50) 151 t_bad51:BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 152 t_bad56:BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 153 t_bad5b:BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 154 t_bad60:BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 155 t_bad65:BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 156 t_bad6a:BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 157 t_bad6f:BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 158 t_bad74:BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 159 t_bad79:BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 160 t_bad7e:BAD_TRAP(0x7e) BAD_TRAP(0x7f) 161 t_sunos:SUNOS_SYSCALL_TRAP /* SunOS System Call */ 162 t_sbkpt:BREAKPOINT_TRAP /* Software Breakpoint/KGDB */ 163 t_divz: TRAP_ENTRY(0x82, do_hw_divzero) /* Divide by zero trap */ 164 t_flwin:TRAP_ENTRY(0x83, do_flush_windows) /* Flush Windows Trap */ 165 t_clwin:BAD_TRAP(0x84) /* Clean Windows Trap */ 166 t_rchk: BAD_TRAP(0x85) /* Range Check */ 167 t_funal:BAD_TRAP(0x86) /* Fix Unaligned Access Trap */ 168 t_iovf: BAD_TRAP(0x87) /* Integer Overflow Trap */ 169 t_slowl:SOLARIS_SYSCALL_TRAP /* Slowaris System Call */ 170 t_netbs:NETBSD_SYSCALL_TRAP /* Net-B.S. System Call */ 171 t_bad8a:BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) BAD_TRAP(0x8d) BAD_TRAP(0x8e) 172 t_bad8f:BAD_TRAP(0x8f) 173 t_linux:LINUX_SYSCALL_TRAP /* Linux System Call */ 174 t_bad91:BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) BAD_TRAP(0x95) 175 t_bad96:BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) BAD_TRAP(0x9a) 176 t_bad9b:BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) BAD_TRAP(0x9f) 177 t_getcc:GETCC_TRAP /* Get Condition Codes */ 178 t_setcc:SETCC_TRAP /* Set Condition Codes */ 179 t_getpsr:GETPSR_TRAP /* Get PSR Register */ 180 t_bada3:BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 181 t_slowi:INDIRECT_SOLARIS_SYSCALL(156) 182 t_bada8:BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 183 t_badac:BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 184 t_badb1:BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 185 t_badb6:BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 186 t_badbb:BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 187 t_badc0:BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 188 t_badc5:BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 189 t_badca:BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 190 t_badcf:BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 191 t_badd4:BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 192 t_badd9:BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 193 t_badde:BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 194 t_bade3:BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 195 t_bade8:BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 196 t_baded:BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 197 t_badf2:BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 198 t_badf7:BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 199 t_badfc:BAD_TRAP(0xfc) BAD_TRAP(0xfd) 200 dbtrap: BAD_TRAP(0xfe) /* Debugger/PROM breakpoint #1 */ 201 dbtrap2:BAD_TRAP(0xff) /* Debugger/PROM breakpoint #2 */ 202 203 .globl C_LABEL(end_traptable) 204 C_LABEL(end_traptable): 205 206 #ifdef CONFIG_SMP 207 /* Trap tables for the other cpus. */ 208 .globl C_LABEL(trapbase_cpu1), C_LABEL(trapbase_cpu2), C_LABEL(trapbase_cpu3) 209 C_LABEL(trapbase_cpu1): 210 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction) 211 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler) 212 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler) 213 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT 214 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint) 215 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 216 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2) 217 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4) 218 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6) 219 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8) 220 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10) 221 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12) 222 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14) 223 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 224 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22) 225 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush) 226 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception) 227 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c) 228 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 229 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 230 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 231 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) 232 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) 233 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) 234 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) 235 BAD_TRAP(0x50) 236 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 237 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 238 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 239 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 240 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 241 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 242 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 243 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 244 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 245 BAD_TRAP(0x7e) BAD_TRAP(0x7f) 246 SUNOS_SYSCALL_TRAP 247 BREAKPOINT_TRAP 248 TRAP_ENTRY(0x82, do_hw_divzero) 249 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85) 250 BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP 251 NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) 252 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f) 253 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) 254 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) 255 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) 256 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP 257 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 258 INDIRECT_SOLARIS_SYSCALL(156) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 259 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 260 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 261 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 262 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 263 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 264 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 265 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 266 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 267 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 268 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 269 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 270 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 271 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 272 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 273 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 274 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 275 BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff) 276 277 C_LABEL(trapbase_cpu2): 278 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction) 279 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler) 280 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler) 281 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT 282 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint) 283 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 284 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2) 285 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4) 286 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6) 287 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8) 288 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10) 289 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12) 290 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14) 291 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 292 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22) 293 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush) 294 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception) 295 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c) 296 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 297 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 298 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 299 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) 300 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) 301 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) 302 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) 303 BAD_TRAP(0x50) 304 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 305 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 306 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 307 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 308 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 309 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 310 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 311 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 312 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 313 BAD_TRAP(0x7e) BAD_TRAP(0x7f) 314 SUNOS_SYSCALL_TRAP 315 BREAKPOINT_TRAP 316 TRAP_ENTRY(0x82, do_hw_divzero) 317 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85) 318 BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP 319 NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) 320 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f) 321 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) 322 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) 323 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) 324 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP 325 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 326 INDIRECT_SOLARIS_SYSCALL(156) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 327 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 328 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 329 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 330 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 331 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 332 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 333 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 334 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 335 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 336 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 337 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 338 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 339 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 340 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 341 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 342 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 343 BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff) 344 345 C_LABEL(trapbase_cpu3): 346 BAD_TRAP(0x0) SRMMU_TFAULT TRAP_ENTRY(0x2, bad_instruction) 347 TRAP_ENTRY(0x3, priv_instruction) TRAP_ENTRY(0x4, fpd_trap_handler) 348 WINDOW_SPILL WINDOW_FILL TRAP_ENTRY(0x7, mna_handler) 349 TRAP_ENTRY(0x8, fpe_trap_handler) SRMMU_DFAULT 350 TRAP_ENTRY(0xa, do_tag_overflow) TRAP_ENTRY(0xb, do_watchpoint) 351 BAD_TRAP(0xc) BAD_TRAP(0xd) BAD_TRAP(0xe) BAD_TRAP(0xf) BAD_TRAP(0x10) 352 TRAP_ENTRY_INTERRUPT(1) TRAP_ENTRY_INTERRUPT(2) 353 TRAP_ENTRY_INTERRUPT(3) TRAP_ENTRY_INTERRUPT(4) 354 TRAP_ENTRY_INTERRUPT(5) TRAP_ENTRY_INTERRUPT(6) 355 TRAP_ENTRY_INTERRUPT(7) TRAP_ENTRY_INTERRUPT(8) 356 TRAP_ENTRY_INTERRUPT(9) TRAP_ENTRY_INTERRUPT(10) 357 TRAP_ENTRY_INTERRUPT(11) TRAP_ENTRY_INTERRUPT(12) 358 TRAP_ENTRY_INTERRUPT(13) TRAP_ENTRY_INTERRUPT(14) 359 TRAP_ENTRY(0x1f, linux_trap_ipi15_sun4m) 360 TRAP_ENTRY(0x20, do_reg_access) BAD_TRAP(0x21) BAD_TRAP(0x22) 361 BAD_TRAP(0x23) TRAP_ENTRY(0x24, do_cp_disabled) SKIP_TRAP(0x25, unimp_flush) 362 BAD_TRAP(0x26) BAD_TRAP(0x27) TRAP_ENTRY(0x28, do_cp_exception) 363 SRMMU_DFAULT TRAP_ENTRY(0x2a, do_hw_divzero) BAD_TRAP(0x2b) BAD_TRAP(0x2c) 364 BAD_TRAP(0x2d) BAD_TRAP(0x2e) BAD_TRAP(0x2f) BAD_TRAP(0x30) BAD_TRAP(0x31) 365 BAD_TRAP(0x32) BAD_TRAP(0x33) BAD_TRAP(0x34) BAD_TRAP(0x35) BAD_TRAP(0x36) 366 BAD_TRAP(0x37) BAD_TRAP(0x38) BAD_TRAP(0x39) BAD_TRAP(0x3a) BAD_TRAP(0x3b) 367 BAD_TRAP(0x3c) BAD_TRAP(0x3d) BAD_TRAP(0x3e) BAD_TRAP(0x3f) BAD_TRAP(0x40) 368 BAD_TRAP(0x41) BAD_TRAP(0x42) BAD_TRAP(0x43) BAD_TRAP(0x44) BAD_TRAP(0x45) 369 BAD_TRAP(0x46) BAD_TRAP(0x47) BAD_TRAP(0x48) BAD_TRAP(0x49) BAD_TRAP(0x4a) 370 BAD_TRAP(0x4b) BAD_TRAP(0x4c) BAD_TRAP(0x4d) BAD_TRAP(0x4e) BAD_TRAP(0x4f) 371 BAD_TRAP(0x50) 372 BAD_TRAP(0x51) BAD_TRAP(0x52) BAD_TRAP(0x53) BAD_TRAP(0x54) BAD_TRAP(0x55) 373 BAD_TRAP(0x56) BAD_TRAP(0x57) BAD_TRAP(0x58) BAD_TRAP(0x59) BAD_TRAP(0x5a) 374 BAD_TRAP(0x5b) BAD_TRAP(0x5c) BAD_TRAP(0x5d) BAD_TRAP(0x5e) BAD_TRAP(0x5f) 375 BAD_TRAP(0x60) BAD_TRAP(0x61) BAD_TRAP(0x62) BAD_TRAP(0x63) BAD_TRAP(0x64) 376 BAD_TRAP(0x65) BAD_TRAP(0x66) BAD_TRAP(0x67) BAD_TRAP(0x68) BAD_TRAP(0x69) 377 BAD_TRAP(0x6a) BAD_TRAP(0x6b) BAD_TRAP(0x6c) BAD_TRAP(0x6d) BAD_TRAP(0x6e) 378 BAD_TRAP(0x6f) BAD_TRAP(0x70) BAD_TRAP(0x71) BAD_TRAP(0x72) BAD_TRAP(0x73) 379 BAD_TRAP(0x74) BAD_TRAP(0x75) BAD_TRAP(0x76) BAD_TRAP(0x77) BAD_TRAP(0x78) 380 BAD_TRAP(0x79) BAD_TRAP(0x7a) BAD_TRAP(0x7b) BAD_TRAP(0x7c) BAD_TRAP(0x7d) 381 BAD_TRAP(0x7e) BAD_TRAP(0x7f) 382 SUNOS_SYSCALL_TRAP 383 BREAKPOINT_TRAP 384 TRAP_ENTRY(0x82, do_hw_divzero) 385 TRAP_ENTRY(0x83, do_flush_windows) BAD_TRAP(0x84) BAD_TRAP(0x85) 386 BAD_TRAP(0x86) BAD_TRAP(0x87) SOLARIS_SYSCALL_TRAP 387 NETBSD_SYSCALL_TRAP BAD_TRAP(0x8a) BAD_TRAP(0x8b) BAD_TRAP(0x8c) 388 BAD_TRAP(0x8d) BAD_TRAP(0x8e) BAD_TRAP(0x8f) 389 LINUX_SYSCALL_TRAP BAD_TRAP(0x91) BAD_TRAP(0x92) BAD_TRAP(0x93) BAD_TRAP(0x94) 390 BAD_TRAP(0x95) BAD_TRAP(0x96) BAD_TRAP(0x97) BAD_TRAP(0x98) BAD_TRAP(0x99) 391 BAD_TRAP(0x9a) BAD_TRAP(0x9b) BAD_TRAP(0x9c) BAD_TRAP(0x9d) BAD_TRAP(0x9e) 392 BAD_TRAP(0x9f) GETCC_TRAP SETCC_TRAP GETPSR_TRAP 393 BAD_TRAP(0xa3) BAD_TRAP(0xa4) BAD_TRAP(0xa5) BAD_TRAP(0xa6) 394 INDIRECT_SOLARIS_SYSCALL(156) BAD_TRAP(0xa8) BAD_TRAP(0xa9) BAD_TRAP(0xaa) BAD_TRAP(0xab) 395 BAD_TRAP(0xac) BAD_TRAP(0xad) BAD_TRAP(0xae) BAD_TRAP(0xaf) BAD_TRAP(0xb0) 396 BAD_TRAP(0xb1) BAD_TRAP(0xb2) BAD_TRAP(0xb3) BAD_TRAP(0xb4) BAD_TRAP(0xb5) 397 BAD_TRAP(0xb6) BAD_TRAP(0xb7) BAD_TRAP(0xb8) BAD_TRAP(0xb9) BAD_TRAP(0xba) 398 BAD_TRAP(0xbb) BAD_TRAP(0xbc) BAD_TRAP(0xbd) BAD_TRAP(0xbe) BAD_TRAP(0xbf) 399 BAD_TRAP(0xc0) BAD_TRAP(0xc1) BAD_TRAP(0xc2) BAD_TRAP(0xc3) BAD_TRAP(0xc4) 400 BAD_TRAP(0xc5) BAD_TRAP(0xc6) BAD_TRAP(0xc7) BAD_TRAP(0xc8) BAD_TRAP(0xc9) 401 BAD_TRAP(0xca) BAD_TRAP(0xcb) BAD_TRAP(0xcc) BAD_TRAP(0xcd) BAD_TRAP(0xce) 402 BAD_TRAP(0xcf) BAD_TRAP(0xd0) BAD_TRAP(0xd1) BAD_TRAP(0xd2) BAD_TRAP(0xd3) 403 BAD_TRAP(0xd4) BAD_TRAP(0xd5) BAD_TRAP(0xd6) BAD_TRAP(0xd7) BAD_TRAP(0xd8) 404 BAD_TRAP(0xd9) BAD_TRAP(0xda) BAD_TRAP(0xdb) BAD_TRAP(0xdc) BAD_TRAP(0xdd) 405 BAD_TRAP(0xde) BAD_TRAP(0xdf) BAD_TRAP(0xe0) BAD_TRAP(0xe1) BAD_TRAP(0xe2) 406 BAD_TRAP(0xe3) BAD_TRAP(0xe4) BAD_TRAP(0xe5) BAD_TRAP(0xe6) BAD_TRAP(0xe7) 407 BAD_TRAP(0xe8) BAD_TRAP(0xe9) BAD_TRAP(0xea) BAD_TRAP(0xeb) BAD_TRAP(0xec) 408 BAD_TRAP(0xed) BAD_TRAP(0xee) BAD_TRAP(0xef) BAD_TRAP(0xf0) BAD_TRAP(0xf1) 409 BAD_TRAP(0xf2) BAD_TRAP(0xf3) BAD_TRAP(0xf4) BAD_TRAP(0xf5) BAD_TRAP(0xf6) 410 BAD_TRAP(0xf7) BAD_TRAP(0xf8) BAD_TRAP(0xf9) BAD_TRAP(0xfa) BAD_TRAP(0xfb) 411 BAD_TRAP(0xfc) BAD_TRAP(0xfd) BAD_TRAP(0xfe) BAD_TRAP(0xff) 412 413 #endif 414 .align PAGE_SIZE 415 416 /* This was the only reasonable way I could think of to properly align 417 * these page-table data structures. 418 */ 419 .globl C_LABEL(pg0), C_LABEL(pg1), C_LABEL(pg2), C_LABEL(pg3) 420 .globl C_LABEL(empty_bad_page) 421 .globl C_LABEL(empty_bad_page_table) 422 .globl C_LABEL(empty_zero_page) 423 .globl C_LABEL(swapper_pg_dir) 424 C_LABEL(swapper_pg_dir): .skip PAGE_SIZE 425 C_LABEL(pg0): .skip PAGE_SIZE 426 C_LABEL(pg1): .skip PAGE_SIZE 427 C_LABEL(pg2): .skip PAGE_SIZE 428 C_LABEL(pg3): .skip PAGE_SIZE 429 C_LABEL(empty_bad_page): .skip PAGE_SIZE 430 C_LABEL(empty_bad_page_table): .skip PAGE_SIZE 431 C_LABEL(empty_zero_page): .skip PAGE_SIZE 432 433 .global C_LABEL(root_flags) 434 .global C_LABEL(ram_flags) 435 .global C_LABEL(root_dev) 436 .global C_LABEL(sparc_ramdisk_image) 437 .global C_LABEL(sparc_ramdisk_size) 438 439 /* This stuff has to be in sync with SILO and other potential boot loaders 440 * Fields should be kept upward compatible and whenever any change is made, 441 * HdrS version should be incremented. 442 */ 443 .ascii "HdrS" 444 .word LINUX_VERSION_CODE 445 .half 0x0203 /* HdrS version */ 446 C_LABEL(root_flags): 447 .half 1 448 C_LABEL(root_dev): 449 .half 0 450 C_LABEL(ram_flags): 451 .half 0 452 C_LABEL(sparc_ramdisk_image): 453 .word 0 454 C_LABEL(sparc_ramdisk_size): 455 .word 0 456 .word C_LABEL(reboot_command) 457 .word 0, 0, 0 458 .word _end 459 460 /* Cool, here we go. Pick up the romvec pointer in %o0 and stash it in 461 * %g7 and at prom_vector_p. And also quickly check whether we are on 462 * a v0, v2, or v3 prom. 463 */ 464 gokernel: 465 /* Ok, it's nice to know, as early as possible, if we 466 * are already mapped where we expect to be in virtual 467 * memory. The Solaris /boot elf format bootloader 468 * will peek into our elf header and load us where 469 * we want to be, otherwise we have to re-map. 470 * 471 * Some boot loaders don't place the jmp'rs address 472 * in %o7, so we do a pc-relative call to a local 473 * label, then see what %o7 has. 474 */ 475 476 mov %o7, %g4 ! Save %o7 477 478 /* Jump to it, and pray... */ 479 current_pc: 480 call 1f 481 nop 482 483 1: 484 mov %o7, %g3 485 486 tst %o0 487 be no_sun4u_here 488 mov %g4, %o7 /* Previous %o7. */ 489 490 mov %o0, %l0 ! stash away romvec 491 mov %o0, %g7 ! put it here too 492 mov %o1, %l1 ! stash away debug_vec too 493 494 /* Ok, let's check out our run time program counter. */ 495 set current_pc, %g5 496 cmp %g3, %g5 497 be already_mapped 498 nop 499 500 /* %l6 will hold the offset we have to subtract 501 * from absolute symbols in order to access areas 502 * in our own image. If already mapped this is 503 * just plain zero, else it is KERNBASE. 504 */ 505 set KERNBASE, %l6 506 b copy_prom_lvl14 507 nop 508 509 already_mapped: 510 mov 0, %l6 511 512 /* Copy over the Prom's level 14 clock handler. */ 513 copy_prom_lvl14: 514 #if 1 515 /* DJHR 516 * preserve our linked/calculated instructions 517 */ 518 set C_LABEL(lvl14_save), %g1 519 set t_irq14, %g3 520 sub %g1, %l6, %g1 ! translate to physical 521 sub %g3, %l6, %g3 ! translate to physical 522 ldd [%g3], %g4 523 std %g4, [%g1] 524 ldd [%g3+8], %g4 525 std %g4, [%g1+8] 526 #endif 527 rd %tbr, %g1 528 andn %g1, 0xfff, %g1 ! proms trap table base 529 or %g0, (0x1e<<4), %g2 ! offset to lvl14 intr 530 or %g1, %g2, %g2 531 set t_irq14, %g3 532 sub %g3, %l6, %g3 533 ldd [%g2], %g4 534 std %g4, [%g3] 535 ldd [%g2 + 0x8], %g4 536 std %g4, [%g3 + 0x8] ! Copy proms handler 537 538 /* Must determine whether we are on a sun4c MMU, SRMMU, or SUN4/400 MUTANT 539 * MMU so we can remap ourselves properly. DON'T TOUCH %l0 thru %l5 in these 540 * remapping routines, we need their values afterwards! 541 */ 542 /* Now check whether we are already mapped, if we 543 * are we can skip all this garbage coming up. 544 */ 545 copy_prom_done: 546 cmp %l6, 0 547 be go_to_highmem ! this will be a nop then 548 nop 549 550 set LOAD_ADDR, %g6 551 cmp %g7, %g6 552 bne remap_not_a_sun4 ! This is not a Sun4 553 nop 554 555 or %g0, 0x1, %g1 556 lduba [%g1] ASI_CONTROL, %g1 ! Only safe to try on Sun4. 557 subcc %g1, 0x24, %g0 ! Is this a mutant Sun4/400??? 558 be sun4_mutant_remap ! Ugh, it is... 559 nop 560 561 b sun4_normal_remap ! regular sun4, 2 level mmu 562 nop 563 564 remap_not_a_sun4: 565 lda [%g0] ASI_M_MMUREGS, %g1 ! same as ASI_PTE on sun4c 566 and %g1, 0x1, %g1 ! Test SRMMU Enable bit ;-) 567 cmp %g1, 0x0 568 be sun4c_remap ! A sun4c MMU or normal Sun4 569 nop 570 srmmu_remap: 571 /* First, check for a viking (TI) module. */ 572 set 0x40000000, %g2 573 rd %psr, %g3 574 and %g2, %g3, %g3 575 subcc %g3, 0x0, %g0 576 bz srmmu_nviking 577 nop 578 579 /* Figure out what kind of viking we are on. 580 * We need to know if we have to play with the 581 * AC bit and disable traps or not. 582 */ 583 584 /* I've only seen MicroSparc's on SparcClassics with this 585 * bit set. 586 */ 587 set 0x800, %g2 588 lda [%g0] ASI_M_MMUREGS, %g3 ! peek in the control reg 589 and %g2, %g3, %g3 590 subcc %g3, 0x0, %g0 591 bnz srmmu_nviking ! is in mbus mode 592 nop 593 594 rd %psr, %g3 ! DO NOT TOUCH %g3 595 andn %g3, PSR_ET, %g2 596 wr %g2, 0x0, %psr 597 WRITE_PAUSE 598 599 /* Get context table pointer, then convert to 600 * a physical address, which is 36 bits. 601 */ 602 set AC_M_CTPR, %g4 603 lda [%g4] ASI_M_MMUREGS, %g4 604 sll %g4, 0x4, %g4 ! We use this below 605 ! DO NOT TOUCH %g4 606 607 /* Set the AC bit in the Viking's MMU control reg. */ 608 lda [%g0] ASI_M_MMUREGS, %g5 ! DO NOT TOUCH %g5 609 set 0x8000, %g6 ! AC bit mask 610 or %g5, %g6, %g6 ! Or it in... 611 sta %g6, [%g0] ASI_M_MMUREGS ! Close your eyes... 612 613 /* Grrr, why does it seem like every other load/store 614 * on the sun4m is in some ASI space... 615 * Fine with me, let's get the pointer to the level 1 616 * page table directory and fetch its entry. 617 */ 618 lda [%g4] ASI_M_BYPASS, %o1 ! This is a level 1 ptr 619 srl %o1, 0x4, %o1 ! Clear low 4 bits 620 sll %o1, 0x8, %o1 ! Make physical 621 622 /* Ok, pull in the PTD. */ 623 lda [%o1] ASI_M_BYPASS, %o2 ! This is the 0x0 16MB pgd 624 625 /* Calculate to KERNBASE entry. 626 * 627 * XXX Should not use empirical constant, but Gas gets an XXX 628 * XXX upset stomach with the bitshift I would have to use XXX 629 */ 630 add %o1, 0x3c0, %o3 631 632 /* Poke the entry into the calculated address. */ 633 sta %o2, [%o3] ASI_M_BYPASS 634 635 /* I don't get it Sun, if you engineered all these 636 * boot loaders and the PROM (thank you for the debugging 637 * features btw) why did you not have them load kernel 638 * images up in high address space, since this is necessary 639 * for ABI compliance anyways? Does this low-mapping provide 640 * enhanced interoperability? 641 * 642 * "The PROM is the computer." 643 */ 644 645 /* Ok, restore the MMU control register we saved in %g5 */ 646 sta %g5, [%g0] ASI_M_MMUREGS ! POW... ouch 647 648 /* Turn traps back on. We saved it in %g3 earlier. */ 649 wr %g3, 0x0, %psr ! tick tock, tick tock 650 651 /* Now we burn precious CPU cycles due to bad engineering. */ 652 WRITE_PAUSE 653 654 /* Wow, all that just to move a 32-bit value from one 655 * place to another... Jump to high memory. 656 */ 657 b go_to_highmem 658 nop 659 660 /* This works on viking's in Mbus mode and all 661 * other MBUS modules. It is virtually the same as 662 * the above madness sans turning traps off and flipping 663 * the AC bit. 664 */ 665 srmmu_nviking: 666 set AC_M_CTPR, %g1 667 lda [%g1] ASI_M_MMUREGS, %g1 ! get ctx table ptr 668 sll %g1, 0x4, %g1 ! make physical addr 669 lda [%g1] ASI_M_BYPASS, %g1 ! ptr to level 1 pg_table 670 srl %g1, 0x4, %g1 671 sll %g1, 0x8, %g1 ! make phys addr for l1 tbl 672 673 lda [%g1] ASI_M_BYPASS, %g2 ! get level1 entry for 0x0 674 add %g1, 0x3c0, %g3 ! XXX AWAY WITH EMPIRICALS 675 sta %g2, [%g3] ASI_M_BYPASS ! place at KERNBASE entry 676 b go_to_highmem 677 nop ! wheee.... 678 679 /* This remaps the kernel on Sun4/4xx machines 680 * that have the Sun Mutant Three Level MMU. 681 * It's like a platypus, Sun didn't have the 682 * SRMMU in conception so they kludged the three 683 * level logic in the regular Sun4 MMU probably. 684 * 685 * Basically, you take each entry in the top level 686 * directory that maps the low 3MB starting at 687 * address zero and put the mapping in the KERNBASE 688 * slots. These top level pgd's are called regmaps. 689 */ 690 sun4_mutant_remap: 691 or %g0, %g0, %g3 ! source base 692 sethi %hi(KERNBASE), %g4 ! destination base 693 or %g4, %lo(KERNBASE), %g4 694 sethi %hi(0x300000), %g5 695 or %g5, %lo(0x300000), %g5 ! upper bound 3MB 696 or %g0, 0x1, %l6 697 sll %l6, 24, %l6 ! Regmap mapping size 698 add %g3, 0x2, %g3 ! Base magic 699 add %g4, 0x2, %g4 ! Base magic 700 701 /* Main remapping loop on Sun4-Mutant-MMU. 702 * "I am not an animal..." -Famous Mutant Person 703 */ 704 sun4_mutant_loop: 705 lduha [%g3] ASI_REGMAP, %g2 ! Get lower entry 706 stha %g2, [%g4] ASI_REGMAP ! Store in high entry 707 add %g4, %l6, %g4 ! Move up high memory ptr 708 subcc %g3, %g5, %g0 ! Reached our limit? 709 blu sun4_mutant_loop ! Nope, loop again 710 add %g3, %l6, %g3 ! delay, Move up low ptr 711 b go_to_highmem ! Jump to high memory. 712 nop 713 714 /* The following is for non-4/4xx sun4 MMU's. */ 715 sun4_normal_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 ! sun4 mmu segmap size 721 sun4_normal_loop: 722 lduha [%g3] ASI_SEGMAP, %g6 ! load phys_seg 723 stha %g6, [%g4] ASI_SEGMAP ! stort new virt mapping 724 add %g3, %l6, %g3 ! increment source pointer 725 subcc %g3, %g5, %g0 ! reached limit? 726 blu sun4_normal_loop ! nope, loop again 727 add %g4, %l6, %g4 ! delay, increment dest ptr 728 b go_to_highmem 729 nop 730 731 /* The following works for Sun4c MMU's */ 732 sun4c_remap: 733 mov 0, %g3 ! source base 734 set KERNBASE, %g4 ! destination base 735 set 0x300000, %g5 ! upper bound 3MB 736 mov 1, %l6 737 sll %l6, 18, %l6 ! sun4c mmu segmap size 738 sun4c_remap_loop: 739 lda [%g3] ASI_SEGMAP, %g6 ! load phys_seg 740 sta %g6, [%g4] ASI_SEGMAP ! store new virt mapping 741 add %g3, %l6, %g3 ! Increment source ptr 742 subcc %g3, %g5, %g0 ! Reached limit? 743 bl sun4c_remap_loop ! Nope, loop again 744 add %g4, %l6, %g4 ! delay, Increment dest ptr 745 746 /* Now do a non-relative jump so that PC is in high-memory */ 747 go_to_highmem: 748 set execute_in_high_mem, %g1 749 jmpl %g1, %g0 750 nop 751 752 /* This is to align init_task_union properly, be careful. -DaveM */ 753 .align 8192 754 755 /* The code above should be at beginning and we have to take care about 756 * short jumps, as branching to .text.init section from .text is usually 757 * impossible */ 758 __INIT 759 /* Acquire boot time privileged register values, this will help debugging. 760 * I figure out and store nwindows and nwindowsm1 later on. 761 */ 762 execute_in_high_mem: 763 mov %l0, %o0 ! put back romvec 764 mov %l1, %o1 ! and debug_vec 765 766 sethi %hi( C_LABEL(prom_vector_p) ), %g1 767 st %o0, [%g1 + %lo( C_LABEL(prom_vector_p) )] 768 769 sethi %hi( C_LABEL(linux_dbvec) ), %g1 770 st %o1, [%g1 + %lo( C_LABEL(linux_dbvec) )] 771 772 ld [%o0 + 0x4], %o3 773 and %o3, 0x3, %o5 ! get the version 774 775 cmp %o3, 0x2 ! a v2 prom? 776 be found_version 777 nop 778 779 /* paul@sfe.com.au */ 780 cmp %o3, 0x3 ! a v3 prom? 781 be found_version 782 nop 783 784 /* Old sun4's pass our load address into %o0 instead of the prom 785 * pointer. On sun4's you have to hard code the romvec pointer into 786 * your code. Sun probably still does that because they don't even 787 * trust their own "OpenBoot" specifications. 788 */ 789 set LOAD_ADDR, %g6 790 cmp %o0, %g6 ! an old sun4? 791 be sun4_init 792 nop 793 794 found_version: 795 #ifdef CONFIG_SUN4 796 /* For people who try sun4 kernels, even if Configure.help advises them. */ 797 ld [%g7 + 0x68], %o1 798 set sun4cdm_notsup, %o0 799 call %o1 800 nop 801 b halt_me 802 nop 803 #endif 804 /* Get the machine type via the mysterious romvec node operations. */ 805 806 add %g7, 0x1c, %l1 807 ld [%l1], %l0 808 ld [%l0], %l0 809 call %l0 810 or %g0, %g0, %o0 ! next_node(0) = first_node 811 or %o0, %g0, %g6 812 813 sethi %hi( C_LABEL(cputypvar) ), %o1 ! First node has cpu-arch 814 or %o1, %lo( C_LABEL(cputypvar) ), %o1 815 sethi %hi( C_LABEL(cputypval) ), %o2 ! information, the string 816 or %o2, %lo( C_LABEL(cputypval) ), %o2 817 ld [%l1], %l0 ! 'compatibility' tells 818 ld [%l0 + 0xc], %l0 ! that we want 'sun4x' where 819 call %l0 ! x is one of '', 'c', 'm', 820 nop ! 'd' or 'e'. %o2 holds pointer 821 ! to a buf where above string 822 ! will get stored by the prom. 823 824 subcc %o0, %g0, %g0 825 bpos got_prop ! Got the property 826 nop 827 828 or %g6, %g0, %o0 829 sethi %hi( C_LABEL(cputypvar_sun4m) ), %o1 830 or %o1, %lo( C_LABEL(cputypvar_sun4m) ), %o1 831 sethi %hi( C_LABEL(cputypval) ), %o2 832 or %o2, %lo( C_LABEL(cputypval) ), %o2 833 ld [%l1], %l0 834 ld [%l0 + 0xc], %l0 835 call %l0 836 nop 837 838 got_prop: 839 set C_LABEL(cputypval), %o2 840 ldub [%o2 + 0x4], %l1 841 842 cmp %l1, ' ' 843 be 1f 844 cmp %l1, 'c' 845 be 1f 846 cmp %l1, 'm' 847 be 1f 848 cmp %l1, 's' 849 be 1f 850 cmp %l1, 'd' 851 be 1f 852 cmp %l1, 'e' 853 be no_sun4e_here ! Could be a sun4e. 854 nop 855 b no_sun4u_here ! AIEEE, a V9 sun4u... Get our BIG BROTHER kernel :)) 856 nop 857 858 1: set C_LABEL(cputypval), %l1 859 ldub [%l1 + 0x4], %l1 860 cmp %l1, 'm' ! Test for sun4d, sun4e ? 861 be sun4m_init 862 cmp %l1, 's' ! Treat sun4s as sun4m 863 be sun4m_init 864 cmp %l1, 'd' ! Let us see how the beast will die 865 be sun4d_init 866 nop 867 868 /* Jump into mmu context zero. */ 869 set AC_CONTEXT, %g1 870 stba %g0, [%g1] ASI_CONTROL 871 872 b sun4c_continue_boot 873 nop 874 875 /* CPUID in bootbus can be found at PA 0xff0140000 */ 876 #define SUN4D_BOOTBUS_CPUID 0xf0140000 877 878 sun4d_init: 879 /* Need to patch call to handler_irq */ 880 set C_LABEL(patch_handler_irq), %g4 881 set C_LABEL(sun4d_handler_irq), %g5 882 sethi %hi(0x40000000), %g3 ! call 883 sub %g5, %g4, %g5 884 srl %g5, 2, %g5 885 or %g5, %g3, %g5 886 st %g5, [%g4] 887 888 #ifdef CONFIG_SMP 889 /* Get our CPU id out of bootbus */ 890 set SUN4D_BOOTBUS_CPUID, %g3 891 lduba [%g3] ASI_M_CTL, %g3 892 and %g3, 0xf8, %g3 893 srl %g3, 3, %g4 894 sta %g4, [%g0] ASI_M_VIKING_TMP1 895 sethi %hi(boot_cpu_id), %g5 896 stb %g4, [%g5 + %lo(boot_cpu_id)] 897 sll %g4, 2, %g4 898 sethi %hi(boot_cpu_id4), %g5 899 stb %g4, [%g5 + %lo(boot_cpu_id4)] 900 #endif 901 902 /* Fall through to sun4m_init */ 903 904 sun4m_init: 905 /* XXX Fucking Cypress... */ 906 lda [%g0] ASI_M_MMUREGS, %g5 907 srl %g5, 28, %g4 908 909 cmp %g4, 1 910 bne 1f 911 srl %g5, 24, %g4 912 913 and %g4, 0xf, %g4 914 cmp %g4, 7 /* This would be a HyperSparc. */ 915 916 bne 2f 917 nop 918 919 1: 920 921 #define PATCH_IT(dst, src) \ 922 set (dst), %g5; \ 923 set (src), %g4; \ 924 ld [%g4], %g3; \ 925 st %g3, [%g5]; \ 926 ld [%g4+0x4], %g3; \ 927 st %g3, [%g5+0x4]; 928 929 /* Signed multiply. */ 930 PATCH_IT(.mul, .mul_patch) 931 PATCH_IT(.mul+0x08, .mul_patch+0x08) 932 933 /* Signed remainder. */ 934 PATCH_IT(.rem, .rem_patch) 935 PATCH_IT(.rem+0x08, .rem_patch+0x08) 936 PATCH_IT(.rem+0x10, .rem_patch+0x10) 937 PATCH_IT(.rem+0x18, .rem_patch+0x18) 938 PATCH_IT(.rem+0x20, .rem_patch+0x20) 939 PATCH_IT(.rem+0x28, .rem_patch+0x28) 940 941 /* Signed division. */ 942 PATCH_IT(.div, .div_patch) 943 PATCH_IT(.div+0x08, .div_patch+0x08) 944 PATCH_IT(.div+0x10, .div_patch+0x10) 945 PATCH_IT(.div+0x18, .div_patch+0x18) 946 PATCH_IT(.div+0x20, .div_patch+0x20) 947 948 /* Unsigned multiply. */ 949 PATCH_IT(.umul, .umul_patch) 950 PATCH_IT(.umul+0x08, .umul_patch+0x08) 951 952 /* Unsigned remainder. */ 953 PATCH_IT(.urem, .urem_patch) 954 PATCH_IT(.urem+0x08, .urem_patch+0x08) 955 PATCH_IT(.urem+0x10, .urem_patch+0x10) 956 PATCH_IT(.urem+0x18, .urem_patch+0x18) 957 958 /* Unsigned division. */ 959 PATCH_IT(.udiv, .udiv_patch) 960 PATCH_IT(.udiv+0x08, .udiv_patch+0x08) 961 PATCH_IT(.udiv+0x10, .udiv_patch+0x10) 962 963 #undef PATCH_IT 964 965 /* Ok, the PROM could have done funny things and apple cider could still 966 * be sitting in the fault status/address registers. Read them all to 967 * clear them so we don't get magic faults later on. 968 */ 969 /* This sucks, apparently this makes Vikings call prom panic, will fix later */ 970 2: 971 rd %psr, %o1 972 srl %o1, 28, %o1 ! Get a type of the CPU 973 974 subcc %o1, 4, %g0 ! TI: Viking or MicroSPARC 975 be sun4c_continue_boot 976 nop 977 978 set AC_M_SFSR, %o0 979 lda [%o0] ASI_M_MMUREGS, %g0 980 set AC_M_SFAR, %o0 981 lda [%o0] ASI_M_MMUREGS, %g0 982 983 /* Fujitsu MicroSPARC-II has no asynchronous flavors of FARs */ 984 subcc %o1, 0, %g0 985 be sun4c_continue_boot 986 nop 987 988 set AC_M_AFSR, %o0 989 lda [%o0] ASI_M_MMUREGS, %g0 990 set AC_M_AFAR, %o0 991 lda [%o0] ASI_M_MMUREGS, %g0 992 nop 993 994 995 sun4c_continue_boot: 996 997 998 /* Aieee, now set PC and nPC, enable traps, give ourselves a stack and it's 999 * show-time! 1000 */ 1001 1002 sethi %hi( C_LABEL(cputyp) ), %o0 1003 st %g4, [%o0 + %lo( C_LABEL(cputyp) )] 1004 1005 /* Turn on Supervisor, EnableFloating, and all the PIL bits. 1006 * Also puts us in register window zero with traps off. 1007 */ 1008 set (PSR_PS | PSR_S | PSR_PIL | PSR_EF), %g2 1009 wr %g2, 0x0, %psr 1010 WRITE_PAUSE 1011 1012 /* I want a kernel stack NOW! */ 1013 set C_LABEL(init_task_union), %g1 1014 set (TASK_UNION_SIZE - STACKFRAME_SZ), %g2 1015 add %g1, %g2, %sp 1016 mov 0, %fp /* And for good luck */ 1017 1018 /* Zero out our BSS section. */ 1019 set C_LABEL(__bss_start) , %o0 ! First address of BSS 1020 set C_LABEL(end) , %o1 ! Last address of BSS 1021 add %o0, 0x1, %o0 1022 1: 1023 stb %g0, [%o0] 1024 subcc %o0, %o1, %g0 1025 bl 1b 1026 add %o0, 0x1, %o0 1027 1028 /* Initialize the umask value for init_task just in case. 1029 * But first make current_set[boot_cpu_id] point to something useful. 1030 */ 1031 set C_LABEL(init_task_union), %g6 1032 set C_LABEL(current_set), %g2 1033 #ifdef CONFIG_SMP 1034 sethi %hi(C_LABEL(boot_cpu_id4)), %g3 1035 ldub [%g3 + %lo(C_LABEL(boot_cpu_id4))], %g3 1036 st %g6, [%g2] 1037 add %g2, %g3, %g2 1038 #endif 1039 st %g6, [%g2] 1040 1041 st %g0, [%g6 + AOFF_task_thread + AOFF_thread_uwinmask] 1042 1043 /* Compute NWINDOWS and stash it away. Now uses %wim trick explained 1044 * in the V8 manual. Ok, this method seems to work, Sparc is cool... 1045 * No, it doesn't work, have to play the save/readCWP/restore trick. 1046 */ 1047 1048 wr %g0, 0x0, %wim ! so we do not get a trap 1049 WRITE_PAUSE 1050 1051 save 1052 1053 rd %psr, %g3 1054 1055 restore 1056 1057 and %g3, 0x1f, %g3 1058 add %g3, 0x1, %g3 1059 1060 mov 2, %g1 1061 wr %g1, 0x0, %wim ! make window 1 invalid 1062 WRITE_PAUSE 1063 1064 cmp %g3, 0x7 1065 bne 2f 1066 nop 1067 1068 /* Adjust our window handling routines to 1069 * do things correctly on 7 window Sparcs. 1070 */ 1071 1072 #define PATCH_INSN(src, dest) \ 1073 set src, %g5; \ 1074 set dest, %g2; \ 1075 ld [%g5], %g4; \ 1076 st %g4, [%g2]; 1077 1078 /* Patch for window spills... */ 1079 PATCH_INSN(spnwin_patch1_7win, spnwin_patch1) 1080 PATCH_INSN(spnwin_patch2_7win, spnwin_patch2) 1081 PATCH_INSN(spnwin_patch3_7win, spnwin_patch3) 1082 1083 /* Patch for window fills... */ 1084 PATCH_INSN(fnwin_patch1_7win, fnwin_patch1) 1085 PATCH_INSN(fnwin_patch2_7win, fnwin_patch2) 1086 1087 /* Patch for trap entry setup... */ 1088 PATCH_INSN(tsetup_7win_patch1, tsetup_patch1) 1089 PATCH_INSN(tsetup_7win_patch2, tsetup_patch2) 1090 PATCH_INSN(tsetup_7win_patch3, tsetup_patch3) 1091 PATCH_INSN(tsetup_7win_patch4, tsetup_patch4) 1092 PATCH_INSN(tsetup_7win_patch5, tsetup_patch5) 1093 PATCH_INSN(tsetup_7win_patch6, tsetup_patch6) 1094 1095 /* Patch for returning from traps... */ 1096 PATCH_INSN(rtrap_7win_patch1, rtrap_patch1) 1097 PATCH_INSN(rtrap_7win_patch2, rtrap_patch2) 1098 PATCH_INSN(rtrap_7win_patch3, rtrap_patch3) 1099 PATCH_INSN(rtrap_7win_patch4, rtrap_patch4) 1100 PATCH_INSN(rtrap_7win_patch5, rtrap_patch5) 1101 1102 /* Patch for killing user windows from the register file. */ 1103 PATCH_INSN(kuw_patch1_7win, kuw_patch1) 1104 1105 /* Now patch the kernel window flush sequences. 1106 * This saves 2 traps on every switch and fork. 1107 */ 1108 set 0x01000000, %g4 1109 set flush_patch_one, %g5 1110 st %g4, [%g5 + 0x18] 1111 st %g4, [%g5 + 0x1c] 1112 set flush_patch_two, %g5 1113 st %g4, [%g5 + 0x18] 1114 st %g4, [%g5 + 0x1c] 1115 set flush_patch_three, %g5 1116 st %g4, [%g5 + 0x18] 1117 st %g4, [%g5 + 0x1c] 1118 set flush_patch_four, %g5 1119 st %g4, [%g5 + 0x18] 1120 st %g4, [%g5 + 0x1c] 1121 set flush_patch_exception, %g5 1122 st %g4, [%g5 + 0x18] 1123 st %g4, [%g5 + 0x1c] 1124 set flush_patch_switch, %g5 1125 st %g4, [%g5 + 0x18] 1126 st %g4, [%g5 + 0x1c] 1127 1128 2: 1129 sethi %hi( C_LABEL(nwindows) ), %g4 1130 st %g3, [%g4 + %lo( C_LABEL(nwindows) )] ! store final value 1131 sub %g3, 0x1, %g3 1132 sethi %hi( C_LABEL(nwindowsm1) ), %g4 1133 st %g3, [%g4 + %lo( C_LABEL(nwindowsm1) )] 1134 1135 /* Here we go, start using Linux's trap table... */ 1136 set C_LABEL(trapbase), %g3 1137 wr %g3, 0x0, %tbr 1138 WRITE_PAUSE 1139 1140 /* Finally, turn on traps so that we can call c-code. */ 1141 rd %psr, %g3 1142 wr %g3, 0x0, %psr 1143 WRITE_PAUSE 1144 1145 wr %g3, PSR_ET, %psr 1146 WRITE_PAUSE 1147 1148 /* First we call prom_init() to set up PROMLIB, then 1149 * off to start_kernel(). 1150 */ 1151 1152 sethi %hi( C_LABEL(prom_vector_p) ), %g5 1153 ld [%g5 + %lo( C_LABEL(prom_vector_p) )], %o0 1154 call C_LABEL(prom_init) 1155 nop 1156 1157 call C_LABEL(start_kernel) 1158 nop 1159 1160 /* We should not get here. */ 1161 call halt_me 1162 nop 1163 1164 sun4_init: 1165 #ifdef CONFIG_SUN4 1166 /* There, happy now Adrian? */ 1167 set C_LABEL(cputypval), %o2 ! Let everyone know we 1168 set ' ', %o0 ! are a "sun4 " architecture 1169 stb %o0, [%o2 + 0x4] 1170 1171 b got_prop 1172 nop 1173 #else 1174 sethi %hi(SUN4_PROM_VECTOR+0x84), %o1 1175 ld [%o1 + %lo(SUN4_PROM_VECTOR+0x84)], %o1 1176 set sun4_notsup, %o0 1177 call %o1 /* printf */ 1178 nop 1179 sethi %hi(SUN4_PROM_VECTOR+0xc4), %o1 1180 ld [%o1 + %lo(SUN4_PROM_VECTOR+0xc4)], %o1 1181 call %o1 /* exittomon */ 1182 nop 1183 1: ba 1b ! Cannot exit into KMON 1184 nop 1185 #endif 1186 no_sun4e_here: 1187 ld [%g7 + 0x68], %o1 1188 set sun4e_notsup, %o0 1189 call %o1 1190 nop 1191 b halt_me 1192 nop 1193 1194 __INITDATA 1195 1196 sun4u_1: 1197 .asciz "finddevice" 1198 .align 4 1199 sun4u_2: 1200 .asciz "/chosen" 1201 .align 4 1202 sun4u_3: 1203 .asciz "getprop" 1204 .align 4 1205 sun4u_4: 1206 .asciz "stdout" 1207 .align 4 1208 sun4u_5: 1209 .asciz "write" 1210 .align 4 1211 sun4u_6: 1212 .asciz "\n\rOn sun4u you have to use UltraLinux (64bit) kernel\n\rand not a 32bit sun4[cdem] version\n\r\n\r" 1213 sun4u_6e: 1214 .align 4 1215 sun4u_7: 1216 .asciz "exit" 1217 .align 8 1218 sun4u_a1: 1219 .word 0, sun4u_1, 0, 1, 0, 1, 0, sun4u_2, 0 1220 sun4u_r1: 1221 .word 0 1222 sun4u_a2: 1223 .word 0, sun4u_3, 0, 4, 0, 1, 0 1224 sun4u_i2: 1225 .word 0, 0, sun4u_4, 0, sun4u_1, 0, 8, 0 1226 sun4u_r2: 1227 .word 0 1228 sun4u_a3: 1229 .word 0, sun4u_5, 0, 3, 0, 1, 0 1230 sun4u_i3: 1231 .word 0, 0, sun4u_6, 0, sun4u_6e - sun4u_6 - 1, 0 1232 sun4u_r3: 1233 .word 0 1234 sun4u_a4: 1235 .word 0, sun4u_7, 0, 0, 0, 0 1236 sun4u_r4: 1237 1238 __INIT 1239 no_sun4u_here: 1240 set sun4u_a1, %o0 1241 set current_pc, %l2 1242 cmp %l2, %g3 1243 be 1f 1244 mov %o4, %l0 1245 sub %g3, %l2, %l6 1246 add %o0, %l6, %o0 1247 mov %o0, %l4 1248 mov sun4u_r4 - sun4u_a1, %l3 1249 ld [%l4], %l5 1250 2: 1251 add %l4, 4, %l4 1252 cmp %l5, %l2 1253 add %l5, %l6, %l5 1254 bgeu,a 3f 1255 st %l5, [%l4 - 4] 1256 3: 1257 subcc %l3, 4, %l3 1258 bne 2b 1259 ld [%l4], %l5 1260 1: 1261 call %l0 1262 mov %o0, %l1 1263 1264 ld [%l1 + (sun4u_r1 - sun4u_a1)], %o1 1265 add %l1, (sun4u_a2 - sun4u_a1), %o0 1266 call %l0 1267 st %o1, [%o0 + (sun4u_i2 - sun4u_a2)] 1268 1269 ld [%l1 + (sun4u_1 - sun4u_a1)], %o1 1270 add %l1, (sun4u_a3 - sun4u_a1), %o0 1271 call %l0 1272 st %o1, [%o0 + (sun4u_i3 - sun4u_a3)] 1273 1274 call %l0 1275 add %l1, (sun4u_a4 - sun4u_a1), %o0 1276 1277 /* Not reached */ 1278 halt_me: 1279 ld [%g7 + 0x74], %o0 1280 call %o0 ! Get us out of here... 1281 nop ! Apparently Solaris is better. 1282 1283 /* Ok, now we continue in the .data/.text sections */ 1284 1285 .data 1286 .align 4 1287 1288 /* 1289 * Fill up the prom vector, note in particular the kind first element, 1290 * no joke. I don't need all of them in here as the entire prom vector 1291 * gets initialized in c-code so all routines can use it. 1292 */ 1293 1294 .globl C_LABEL(prom_vector_p) 1295 C_LABEL(prom_vector_p): 1296 .word 0 1297 1298 /* We calculate the following at boot time, window fills/spills and trap entry 1299 * code uses these to keep track of the register windows. 1300 */ 1301 1302 .align 4 1303 .globl C_LABEL(nwindows) 1304 .globl C_LABEL(nwindowsm1) 1305 C_LABEL(nwindows): 1306 .word 8 1307 C_LABEL(nwindowsm1): 1308 .word 7 1309 1310 /* Boot time debugger vector value. We need this later on. */ 1311 1312 .align 4 1313 .globl C_LABEL(linux_dbvec) 1314 C_LABEL(linux_dbvec): 1315 .word 0 1316 .word 0 1317 1318 .align 8 1319 1320 .globl C_LABEL(lvl14_save) 1321 C_LABEL(lvl14_save): 1322 .word 0 1323 .word 0 1324 .word 0 1325 .word 0 1326 .word t_irq14 1327 1328 .section ".fixup",#alloc,#execinstr 1329 .globl __ret_efault 1330 __ret_efault: 1331 ret 1332 restore %g0, -EFAULT, %o0
Cache object: a68a36013e88743975b6c738bf4db6eb
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]