* MA 02111-1307 USA
*/
+#include <asm-offsets.h>
#include <config.h>
#include <version.h>
.globl _TEXT_BASE
_TEXT_BASE:
- .word TEXT_BASE
+ .word CONFIG_SYS_TEXT_BASE
#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
.globl _armboot_start
/*
* These are defined in the board-specific linker script.
*/
-.globl _bss_start
-_bss_start:
- .word __bss_start
+.globl _bss_start_ofs
+_bss_start_ofs:
+ .word __bss_start - _start
-.globl _bss_end
-_bss_end:
- .word _end
+.globl _bss_end_ofs
+_bss_end_ofs:
+ .word _end - _start
#ifdef CONFIG_USE_IRQ
/* IRQ stack memory (calculated at run-time) */
IRQ_STACK_START_IN:
.word 0x0badc0de
-.globl _datarel_start
-_datarel_start:
- .word __datarel_start
+.globl _datarel_start_ofs
+_datarel_start_ofs:
+ .word __datarel_start - _start
-.globl _datarelrolocal_start
-_datarelrolocal_start:
- .word __datarelrolocal_start
+.globl _datarelrolocal_start_ofs
+_datarelrolocal_start_ofs:
+ .word __datarelrolocal_start - _start
-.globl _datarellocal_start
-_datarellocal_start:
- .word __datarellocal_start
+.globl _datarellocal_start_ofs
+_datarellocal_start_ofs:
+ .word __datarellocal_start - _start
-.globl _datarelro_start
-_datarelro_start:
- .word __datarelro_start
+.globl _datarelro_start_ofs
+_datarelro_start_ofs:
+ .word __datarelro_start - _start
-.globl _got_start
-_got_start:
- .word __got_start
+.globl _got_start_ofs
+_got_start_ofs:
+ .word __got_start - _start
-.globl _got_end
-_got_end:
- .word __got_end
+.globl _got_end_Ofs
+_got_end_ofs:
+ .word __got_end - _start
/*
* the actual reset code
#ifndef CONFIG_SKIP_RELOCATE_UBOOT
adr r0, _start
ldr r2, _TEXT_BASE
- ldr r3, _bss_start
- sub r2, r3, r2 /* r2 <- size of armboot */
- add r2, r0, r2 /* r2 <- source end address */
+ ldr r3, _bss_start_ofs
+ add r2, r0, r3 /* r2 <- source end address */
cmp r0, r6
#ifndef CONFIG_PRELOADER
beq jump_2_ram
blo copy_loop
#ifndef CONFIG_PRELOADER
- /* fix got entries */
- ldr r1, _TEXT_BASE
- mov r0, r7 /* reloc addr */
- ldr r2, _got_start /* addr in Flash */
- ldr r3, _got_end /* addr in Flash */
- sub r3, r3, r1
- add r3, r3, r0
- sub r2, r2, r1
- add r2, r2, r0
-
+ /*
+ * fix .rel.dyn relocations
+ */
+ ldr r0, _TEXT_BASE /* r0 <- Text base */
+ sub r9, r7, r0 /* r9 <- relocation offset */
+ 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 r4, [r2]
- sub r4, r4, r1
- add r4, r4, r0
- str r4, [r2]
- add r2, r2, #4
+ 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 r8, r1, #0xff
+ cmp r8, #23 /* relative fixup? */
+ beq fixrel
+ cmp r8, #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, 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
- bne fixloop
+ blo fixloop
clear_bss:
- ldr r0, _bss_start
- ldr r1, _bss_end
+ ldr r0, _bss_start_ofs
+ ldr r1, _bss_end_ofs
ldr r3, _TEXT_BASE /* Text base */
mov r4, r7 /* reloc addr */
- sub r0, r0, r3
add r0, r0, r4
- sub r1, r1, r3
add r1, r1, r4
mov r2, #0x00000000 /* clear */
* initialization, now running from RAM.
*/
jump_2_ram:
- ldr r0, _TEXT_BASE
- ldr r2, _board_init_r
- sub r2, r2, r0
- add r2, r2, r7 /* position from board_init_r in RAM */
+ ldr r0, _board_init_r_ofs
+ adr r1, _start
+ add lr, r0, r1
+#ifndef CONFIG_SKIP_RELOCATE_UBOOT
+ add lr, lr, r9
+#endif
/* setup parameters for board_init_r */
mov r0, r5 /* gd_t */
mov r1, r7 /* dest_addr */
/* jump to it ... */
- mov lr, r2
mov pc, lr
-_board_init_r: .word board_init_r
+_board_init_r_ofs:
+ .word board_init_r - _start
+
+_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
+
#else /* #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC) */
/*
* the actual reset code
stack_setup:
ldr r0, _TEXT_BASE @ upper 128 KiB: relocated uboot
sub r0, r0, #CONFIG_SYS_MALLOC_LEN @ malloc area
- sub r0, r0, #CONFIG_SYS_GBL_DATA_SIZE @ bdinfo
+ sub r0, r0, #GENERATED_GBL_DATA_SIZE @ bdinfo
#ifdef CONFIG_USE_IRQ
sub r0, r0, #(CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ)
#endif
#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
ldr r2, _armboot_start
sub r2, r2, #(CONFIG_SYS_MALLOC_LEN)
- sub r2, r2, #(CONFIG_SYS_GBL_DATA_SIZE + 8) @ set base 2 words into abort
+ sub r2, r2, #(GENERATED_GBL_DATA_SIZE + 8) @ set base 2 words into abort
#else
ldr r2, IRQ_STACK_START_IN @ set base 2 words into abort
@ stack
#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
ldr r13, _armboot_start @ setup our mode stack (enter
sub r13, r13, #(CONFIG_SYS_MALLOC_LEN) @ move past malloc pool
- sub r13, r13, #(CONFIG_SYS_GBL_DATA_SIZE + 8) @ move to reserved a couple
+ sub r13, r13, #(GENERATED_GBL_DATA_SIZE + 8) @ move to reserved a couple
#else
ldr r13, IRQ_STACK_START_IN @ setup our mode stack (enter
@ in banked mode)
#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
ldr r0, _armboot_start @ get data regions start
sub r0, r0, #(CONFIG_SYS_MALLOC_LEN) @ move past malloc pool
- sub r0, r0, #(CONFIG_SYS_GBL_DATA_SIZE + 8) @ move past gbl and a couple
+ sub r0, r0, #(GENERATED_GBL_DATA_SIZE + 8) @ move past gbl and a couple
#else
ldr r0, IRQ_STACK_START_IN @ get data regions start
@ spots for abort stack
projects / oweals / u-boot.git / blobdiff