| start.S (9cef20b10929d7ad047b071c3dcb924401bf78e8) | start.S (e945f6dc2814f5f0d30b5b7e23821b3fd4faff5b) |
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| 1/* 2 * (C) Copyright 2007 Michal Simek 3 * (C) Copyright 2004 Atmark Techno, Inc. 4 * 5 * Michal SIMEK <monstr@monstr.eu> 6 * Yasushi SHOJI <yashi@atmark-techno.com> 7 * 8 * SPDX-License-Identifier: GPL-2.0+ --- 136 unchanged lines hidden (view full) --- 145 beqi r6, 3f 1462: 147 swi r0, r5, 0 /* write zero to loc */ 148 addi r5, r5, 4 /* increment to next loc */ 149 cmp r6, r5, r4 /* check if we have reach the end */ 150 bnei r6, 2b 1513: /* jumping to board_init */ 152#ifndef CONFIG_SPL_BUILD | 1/* 2 * (C) Copyright 2007 Michal Simek 3 * (C) Copyright 2004 Atmark Techno, Inc. 4 * 5 * Michal SIMEK <monstr@monstr.eu> 6 * Yasushi SHOJI <yashi@atmark-techno.com> 7 * 8 * SPDX-License-Identifier: GPL-2.0+ --- 136 unchanged lines hidden (view full) --- 145 beqi r6, 3f 1462: 147 swi r0, r5, 0 /* write zero to loc */ 148 addi r5, r5, 4 /* increment to next loc */ 149 cmp r6, r5, r4 /* check if we have reach the end */ 150 bnei r6, 2b 1513: /* jumping to board_init */ 152#ifndef CONFIG_SPL_BUILD |
| 153 or r5, r0, r0 /* flags - empty */ |
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| 153 brai board_init_f 154#else 155 addi r31, r0, CONFIG_SYS_SPL_MALLOC_END 156 brai board_init_r 157#endif 1581: bri 1b 159 160#ifndef CONFIG_SPL_BUILD --- 24 unchanged lines hidden (view full) --- 185out16: bslli r3, r6, 8 186 bsrli r6, r6, 8 187 andi r3, r3, 0xffff 188 or r3, r3, r6 189 sh r3, r0, r5 190 rtsd r15, 8 191 or r0, r0, r0 192 .end out16 | 154 brai board_init_f 155#else 156 addi r31, r0, CONFIG_SYS_SPL_MALLOC_END 157 brai board_init_r 158#endif 1591: bri 1b 160 161#ifndef CONFIG_SPL_BUILD --- 24 unchanged lines hidden (view full) --- 186out16: bslli r3, r6, 8 187 bsrli r6, r6, 8 188 andi r3, r3, 0xffff 189 or r3, r3, r6 190 sh r3, r0, r5 191 rtsd r15, 8 192 or r0, r0, r0 193 .end out16 |
| 194 195/* 196 * Relocate u-boot 197 */ 198 .text 199 .global relocate_code 200 .ent relocate_code 201 .align 2 202relocate_code: 203 /* 204 * r5 - start_addr_sp 205 * r6 - new_gd 206 * r7 - reloc_addr 207 */ 208 addi r1, r5, 0 /* Start to use new SP */ 209 addi r31, r6, 0 /* Start to use new GD */ 210 211 add r23, r0, r7 /* Move reloc addr to r23 */ 212 /* Relocate text and data - r12 temp value */ 213 addi r21, r0, _start 214 addi r22, r0, __end - 4 /* Include BSS too */ 2151: lwi r12, r21, 0 /* Load u-boot data */ 216 swi r12, r23, 0 /* Write zero to loc */ 217 addi r21, r21, 4 /* Increment to next loc - origin code */ 218 cmp r12, r21, r22 /* Check if we have reach the end */ 219 bneid r12, 1b 220 addi r23, r23, 4 /* Increment to next loc - relocate code */ 221 222 /* R23 points to the base address. */ 223 add r23, r0, r7 /* Move reloc addr to r23 */ 224 addi r24, r0, CONFIG_SYS_TEXT_BASE /* Get reloc offset */ 225 rsub r23, r24, r23 /* keep - this is already here gd->reloc_off */ 226 227 addik r6, r0, 0x2 /* BIG/LITTLE endian offset */ 228 lwi r7, r0, 0x28 229 swi r6, r0, 0x28 /* used first unused MB vector */ 230 lbui r10, r0, 0x28 /* used first unused MB vector */ 231 swi r7, r0, 0x28 232 233#ifdef CONFIG_SYS_USR_EXCEP 234 addik r6, r0, _exception_handler 235 addk r6, r6, r23 /* add offset */ 236 sw r6, r1, r0 237 lhu r7, r1, r10 238 rsubi r8, r10, 0xa 239 sh r7, r0, r8 240 rsubi r8, r10, 0xe 241 sh r6, r0, r8 |
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| 193#endif | 242#endif |
| 243 addik r6, r0, _hw_exception_handler 244 addk r6, r6, r23 /* add offset */ 245 sw r6, r1, r0 246 lhu r7, r1, r10 247 rsubi r8, r10, 0x22 248 sh r7, r0, r8 249 rsubi r8, r10, 0x26 250 sh r6, r0, r8 251 252 addik r6, r0, _interrupt_handler 253 addk r6, r6, r23 /* add offset */ 254 sw r6, r1, r0 255 lhu r7, r1, r10 256 rsubi r8, r10, 0x12 257 sh r7, r0, r8 258 rsubi r8, r10, 0x16 259 sh r6, r0, r8 260 261 /* Check if GOT exist */ 262 addik r21, r23, _got_start 263 addik r22, r23, _got_end 264 cmpu r12, r21, r22 265 beqi r12, 2f /* No GOT table - jump over */ 266 267 /* Skip last 3 entries plus 1 because of loop boundary below */ 268 addik r22, r22, -0x10 269 270 /* Relocate the GOT. */ 2713: lw r12, r21, r0 /* Load entry */ 272 addk r12, r12, r23 /* Add reloc offset */ 273 sw r12, r21, r0 /* Save entry back */ 274 275 cmpu r12, r21, r22 /* Check if this cross boundary */ 276 bneid r12, 3b 277 addik r21. r21, 4 278 279 /* Update pointer to GOT */ 280 mfs r20, rpc 281 addik r20, r20, _GLOBAL_OFFSET_TABLE_ + 8 282 addk r20, r20, r23 283 284 /* Flush caches to ensure consistency */ 285 addik r5, r0, 0 286 addik r6, r0, XILINX_DCACHE_BYTE_SIZE 287 bralid r15, flush_cache 288 nop 289 2902: addi r5, r31, 0 /* gd is initialized in board_r.c */ 291 addi r6, r0, CONFIG_SYS_TEXT_BASE 292 addi r12, r23, board_init_r 293 bra r12 /* Jump to relocated code */ 294 295 .end relocate_code 296#endif |
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