X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=arch%2Farm%2Fcpu%2Farm720t%2Fstart.S;h=1a34842690358c3c485f0d08dbc30d8a134a188b;hb=cd2e46cb38d5aeada2b2c2f881cdc6baa672dc09;hp=f425a55a3b84e577ee55b961f8f0ebdff63b2600;hpb=60985bba58e7695dac1fddae8cdbb62d8cfd1254;p=u-boot diff --git a/arch/arm/cpu/arm720t/start.S b/arch/arm/cpu/arm720t/start.S index f425a55a3b..1a34842690 100644 --- a/arch/arm/cpu/arm720t/start.S +++ b/arch/arm/cpu/arm720t/start.S @@ -4,23 +4,7 @@ * Copyright (c) 2001 Marius Gröger * Copyright (c) 2002 Alex Züpke * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * SPDX-License-Identifier: GPL-2.0+ */ #include @@ -83,36 +67,6 @@ _pad: .word 0x12345678 /* now 16*4=64 */ ************************************************************************* */ -.globl _TEXT_BASE -_TEXT_BASE: -#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_TEXT_BASE) - .word CONFIG_SPL_TEXT_BASE -#else - .word CONFIG_SYS_TEXT_BASE -#endif - -/* - * These are defined in the board-specific linker script. - * Subtracting _start from them lets the linker put their - * relative position in the executable instead of leaving - * them null. - */ -.globl _bss_start_ofs -_bss_start_ofs: - .word __bss_start - _start - -.globl _image_copy_end_ofs -_image_copy_end_ofs: - .word __image_copy_end - _start - -.globl _bss_end_ofs -_bss_end_ofs: - .word __bss_end - _start - -.globl _end_ofs -_end_ofs: - .word _end - _start - #ifdef CONFIG_USE_IRQ /* IRQ stack memory (calculated at run-time) */ .globl IRQ_STACK_START @@ -155,79 +109,6 @@ reset: /*------------------------------------------------------------------------------*/ -/* - * void relocate_code(addr_moni) - * - * This function relocates the monitor code. - */ - .globl relocate_code -relocate_code: - mov r6, r0 /* save addr of destination */ - - adr r0, _start - subs r9, r6, r0 /* r9 <- relocation offset */ - beq relocate_done /* skip relocation */ - mov r1, r6 /* r1 <- scratch for copy_loop */ - ldr r3, _image_copy_end_ofs - add r2, r0, r3 /* r2 <- source end address */ - -copy_loop: - ldmia r0!, {r10-r11} /* copy from source address [r0] */ - stmia r1!, {r10-r11} /* copy to target address [r1] */ - cmp r0, r2 /* until source end address [r2] */ - blo copy_loop - -#ifndef CONFIG_SPL_BUILD - /* - * fix .rel.dyn relocations - */ - ldr r0, _TEXT_BASE /* r0 <- Text base */ - ldr r10, _dynsym_start_ofs /* r10 <- sym table ofs */ - add r10, r10, r0 /* r10 <- sym table in FLASH */ - ldr r2, _rel_dyn_start_ofs /* r2 <- rel dyn start ofs */ - add r2, r2, r0 /* r2 <- rel dyn start in FLASH */ - ldr r3, _rel_dyn_end_ofs /* r3 <- rel dyn end ofs */ - add r3, r3, r0 /* r3 <- rel dyn end in FLASH */ -fixloop: - ldr r0, [r2] /* r0 <- location to fix up, IN FLASH! */ - add r0, r0, r9 /* r0 <- location to fix up in RAM */ - ldr r1, [r2, #4] - and r7, r1, #0xff - cmp r7, #23 /* relative fixup? */ - beq fixrel - cmp r7, #2 /* absolute fixup? */ - beq fixabs - /* ignore unknown type of fixup */ - b fixnext -fixabs: - /* absolute fix: set location to (offset) symbol value */ - mov r1, r1, LSR #4 /* r1 <- symbol index in .dynsym */ - add r1, r10, r1 /* r1 <- address of symbol in table */ - ldr r1, [r1, #4] /* r1 <- symbol value */ - add r1, r1, r9 /* r1 <- relocated sym addr */ - b fixnext -fixrel: - /* relative fix: increase location by offset */ - ldr r1, [r0] - add r1, r1, r9 -fixnext: - str r1, [r0] - add r2, r2, #8 /* each rel.dyn entry is 8 bytes */ - cmp r2, r3 - blo fixloop -#endif - -relocate_done: - - mov pc, lr - -_rel_dyn_start_ofs: - .word __rel_dyn_start - _start -_rel_dyn_end_ofs: - .word __rel_dyn_end - _start -_dynsym_start_ofs: - .word __dynsym_start - _start - .globl c_runtime_cpu_setup c_runtime_cpu_setup: