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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 | /* * linux/arch/arm/kernel/debug-armv.S * * Copyright (C) 1994-1999 Russell King * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * 32-bit debugging code */ #include <linux/config.h> #include <linux/linkage.h> #include <asm/hardware.h> .text /* * Some debugging routines (useful if you've got MM problems and * printk isn't working). For DEBUGGING ONLY!!! Do not leave * references to these in a production kernel! */ #if defined(CONFIG_ARCH_RPC) .macro addruart,rx mov \rx, #0xe0000000 orr \rx, \rx, #0x00010000 orr \rx, \rx, #0x00000fe0 .endm .macro senduart,rd,rx strb \rd, [\rx] .endm .macro busyuart,rd,rx 1001: ldrb \rd, [\rx, #0x14] and \rd, \rd, #0x60 teq \rd, #0x60 bne 1001b .endm .macro waituart,rd,rx 1001: ldrb \rd, [\rx, #0x18] tst \rd, #0x10 beq 1001b .endm #elif defined(CONFIG_ARCH_EBSA110) .macro addruart,rx mov \rx, #0xf0000000 orr \rx, \rx, #0x00000be0 .endm .macro senduart,rd,rx strb \rd, [\rx] .endm .macro busyuart,rd,rx 1002: ldrb \rd, [\rx, #0x14] and \rd, \rd, #0x60 teq \rd, #0x60 bne 1002b .endm .macro waituart,rd,rx 1001: ldrb \rd, [\rx, #0x18] tst \rd, #0x10 beq 1001b .endm #elif defined(CONFIG_ARCH_SHARK) .macro addruart,rx mov \rx, #0xe0000000 orr \rx, \rx, #0x000003f8 .endm .macro senduart,rd,rx strb \rd, [\rx] .endm .macro busyuart,rd,rx mov \rd, #0 1001: add \rd, \rd, #1 teq \rd, #0x10000 bne 1001b .endm .macro waituart,rd,rx .endm #elif defined(CONFIG_FOOTBRIDGE) #include <asm/hardware/dec21285.h> #ifndef CONFIG_DEBUG_DC21285_PORT /* For NetWinder debugging */ .macro addruart,rx mrc p15, 0, \rx, c1, c0 tst \rx, #1 @ MMU enabled? moveq \rx, #0x7c000000 @ physical movne \rx, #0xff000000 @ virtual orr \rx, \rx, #0x000003f8 .endm .macro senduart,rd,rx strb \rd, [\rx] .endm .macro busyuart,rd,rx 1002: ldrb \rd, [\rx, #0x5] and \rd, \rd, #0x60 teq \rd, #0x60 bne 1002b .endm .macro waituart,rd,rx 1001: ldrb \rd, [\rx, #0x6] tst \rd, #0x10 beq 1001b .endm #else /* For EBSA285 debugging */ .equ dc21285_high, ARMCSR_BASE & 0xff000000 .equ dc21285_low, ARMCSR_BASE & 0x00ffffff .macro addruart,rx mov \rx, #dc21285_high .if dc21285_low orr \rx, \rx, #dc21285_low .endif .endm .macro senduart,rd,rx str \rd, [\rx, #0x160] @ UARTDR .endm .macro busyuart,rd,rx 1001: ldr \rd, [\rx, #0x178] @ UARTFLG tst \rd, #1 << 3 bne 1001b .endm .macro waituart,rd,rx .endm #endif #elif defined(CONFIG_ARCH_FTVPCI) .macro addruart,rx mrc p15, 0, \rx, c1, c0 tst \rx, #1 @ MMU enabled? movne \rx, #0xe0000000 moveq \rx, #0x10000000 .endm .macro senduart,rd,rx str \rd, [\rx, #0xc] .endm .macro busyuart,rd,rx 1001: ldr \rd, [\rx, #0x4] tst \rd, #1 << 2 beq 1001b .endm .macro waituart,rd,rx .endm #elif defined(CONFIG_ARCH_SA1100) .macro addruart,rx mrc p15, 0, \rx, c1, c0 tst \rx, #1 @ MMU enabled? moveq \rx, #0x80000000 @ physical base address movne \rx, #0xf8000000 @ virtual address add \rx, \rx, #0x00050000 @ Ser3 @add \rx, \rx, #0x00010000 @ Ser1 .endm .macro senduart,rd,rx str \rd, [\rx, #0x14] @ UTDR .endm .macro waituart,rd,rx 1001: ldr \rd, [\rx, #0x20] @ UTSR1 tst \rd, #1 << 2 @ UTSR1_TNF beq 1001b .endm .macro busyuart,rd,rx 1001: ldr \rd, [\rx, #0x20] @ UTSR1 tst \rd, #1 << 0 @ UTSR1_TBY bne 1001b .endm #elif defined(CONFIG_ARCH_CLPS7500) .macro addruart,rx mov \rx, #0xe0000000 orr \rx, \rx, #0x00010000 orr \rx, \rx, #0x00000be0 .endm .macro senduart,rd,rx strb \rd, [\rx] .endm .macro busyuart,rd,rx .endm .macro waituart,rd,rx 1001: ldrb \rd, [\rx, #0x14] tst \rd, #0x20 beq 1001b .endm #elif defined(CONFIG_ARCH_L7200) .equ io_virt, IO_BASE .equ io_phys, IO_START .macro addruart,rx mrc p15, 0, \rx, c1, c0 tst \rx, #1 @ MMU enabled? moveq \rx, #io_phys @ physical base address movne \rx, #io_virt @ virtual address add \rx, \rx, #0x00044000 @ UART1 @ add \rx, \rx, #0x00045000 @ UART2 .endm .macro senduart,rd,rx str \rd, [\rx, #0x0] @ UARTDR .endm .macro waituart,rd,rx 1001: ldr \rd, [\rx, #0x18] @ UARTFLG tst \rd, #1 << 5 @ UARTFLGUTXFF - 1 when full bne 1001b .endm .macro busyuart,rd,rx 1001: ldr \rd, [\rx, #0x18] @ UARTFLG tst \rd, #1 << 3 @ UARTFLGUBUSY - 1 when busy bne 1001b .endm #elif defined(CONFIG_ARCH_INTEGRATOR) #include <asm/hardware/serial_amba.h> .macro addruart,rx mrc p15, 0, \rx, c1, c0 tst \rx, #1 @ MMU enabled? moveq \rx, #0x16000000 @ physical base address movne \rx, #0xf0000000 @ virtual base addne \rx, \rx, #0x16000000 >> 4 .endm .macro senduart,rd,rx strb \rd, [\rx, #AMBA_UARTDR] .endm .macro waituart,rd,rx 1001: ldr \rd, [\rx, #0x18] @ UARTFLG tst \rd, #1 << 5 @ UARTFLGUTXFF - 1 when full bne 1001b .endm .macro busyuart,rd,rx 1001: ldr \rd, [\rx, #0x18] @ UARTFLG tst \rd, #1 << 3 @ UARTFLGUBUSY - 1 when busy bne 1001b .endm #elif defined(CONFIG_ARCH_CLPS711X) #include <asm/hardware/clps7111.h> .macro addruart,rx mrc p15, 0, \rx, c1, c0 tst \rx, #1 @ MMU enabled? moveq \rx, #CLPS7111_PHYS_BASE movne \rx, #CLPS7111_VIRT_BASE #ifndef CONFIG_DEBUG_CLPS711X_UART2 add \rx, \rx, #0x0000 @ UART1 #else add \rx, \rx, #0x1000 @ UART2 #endif .endm .macro senduart,rd,rx str \rd, [\rx, #0x0480] @ UARTDR .endm .macro waituart,rd,rx 1001: ldr \rd, [\rx, #0x0140] @ SYSFLGx tst \rd, #1 << 11 @ UBUSYx bne 1001b .endm .macro busyuart,rd,rx tst \rx, #0x1000 @ UART2 does not have CTS here bne 1002f 1001: ldr \rd, [\rx, #0x0140] @ SYSFLGx tst \rd, #1 << 8 @ CTS bne 1001b 1002: .endm #else #error Unknown architecture #endif /* * Useful debugging routines */ ENTRY(printhex8) mov r1, #8 b printhex ENTRY(printhex4) mov r1, #4 b printhex ENTRY(printhex2) mov r1, #2 printhex: adr r2, hexbuf add r3, r2, r1 mov r1, #0 strb r1, [r3] 1: and r1, r0, #15 mov r0, r0, lsr #4 cmp r1, #10 addlt r1, r1, #'0' addge r1, r1, #'a' - 10 strb r1, [r3, #-1]! teq r3, r2 bne 1b mov r0, r2 b printascii .ltorg ENTRY(printascii) addruart r3 b 2f 1: waituart r2, r3 senduart r1, r3 busyuart r2, r3 teq r1, #'\n' moveq r1, #'\r' beq 1b 2: teq r0, #0 ldrneb r1, [r0], #1 teqne r1, #0 bne 1b mov pc, lr ENTRY(printch) addruart r3 mov r1, r0 mov r0, #0 b 1b hexbuf: .space 16 |