diff options
Diffstat (limited to 'arch/mips/cpu/xburst/start.S')
| -rw-r--r-- | arch/mips/cpu/xburst/start.S | 59 |
1 files changed, 23 insertions, 36 deletions
diff --git a/arch/mips/cpu/xburst/start.S b/arch/mips/cpu/xburst/start.S index d2c064b..10dffb4 100644 --- a/arch/mips/cpu/xburst/start.S +++ b/arch/mips/cpu/xburst/start.S @@ -3,23 +3,7 @@ * * Copyright (c) 2010 Xiangfu Liu <xiangfu@sharism.cc> * - * 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 <config.h> @@ -63,14 +47,17 @@ _start: relocate_code: move sp, a0 # set new stack pointer + move s0, a1 # save gd in s0 + move s2, a2 # save destination address in s2 + li t0, CONFIG_SYS_MONITOR_BASE - sub t6, a2, t0 # t6 <-- relocation offset + sub s1, s2, t0 # s1 <-- relocation offset la t3, in_ram lw t2, -12(t3) # t2 <-- __image_copy_end move t1, a2 - add gp, t6 # adjust gp + add gp, s1 # adjust gp /* * t0 = source address @@ -112,7 +99,7 @@ relocate_code: nop /* Jump to where we've relocated ourselves */ - addi t0, a2, in_ram - _start + addi t0, s2, in_ram - _start jr t0 nop @@ -130,19 +117,19 @@ in_ram: * generated by GNU ld. Skip these reserved entries from relocation. */ lw t3, -4(t0) # t3 <-- num_got_entries - lw t4, -8(t0) # t4 <-- _GLOBAL_OFFSET_TABLE_ - add t4, t6 # t4 now holds relocated _G_O_T_ - addi t4, t4, 8 # skipping first two entries + lw t8, -8(t0) # t8 <-- _GLOBAL_OFFSET_TABLE_ + add t8, s1 # t8 now holds relocated _G_O_T_ + addi t8, t8, 8 # skipping first two entries li t2, 2 1: - lw t1, 0(t4) + lw t1, 0(t8) beqz t1, 2f - add t1, t6 - sw t1, 0(t4) + add t1, s1 + sw t1, 0(t8) 2: addi t2, 1 blt t2, t3, 1b - addi t4, 4 + addi t8, 4 /* Update dynamic relocations */ lw t1, -16(t0) # t1 <-- __rel_dyn_start @@ -152,19 +139,19 @@ in_ram: addi t1, 8 1: - lw t3, -4(t1) # t3 <-- relocation info + lw t8, -4(t1) # t8 <-- relocation info - sub t3, 3 - bnez t3, 2f # skip non R_MIPS_REL32 entries + li t3, 3 + bne t8, t3, 2f # skip non R_MIPS_REL32 entries nop lw t3, -8(t1) # t3 <-- location to fix up in FLASH - lw t4, 0(t3) # t4 <-- original pointer - add t4, t6 # t4 <-- adjusted pointer + lw t8, 0(t3) # t8 <-- original pointer + add t8, s1 # t8 <-- adjusted pointer - add t3, t6 # t3 <-- location to fix up in RAM - sw t4, 0(t3) + add t3, s1 # t3 <-- location to fix up in RAM + sw t8, 0(t3) 2: blt t1, t2, 1b @@ -184,9 +171,9 @@ in_ram: blt t1, t2, 1b addi t1, 4 - move a0, a1 # a0 <-- gd + move a0, s0 # a0 <-- gd la t9, board_init_r jr t9 - move a1, a2 + move a1, s2 .end relocate_code |