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Merge branch 'master' of /home/wd/git/u-boot/custodians
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wdenx committed Nov 26, 2010
2 parents 50e2df3 + fc90c06 commit d4752d5
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Showing 46 changed files with 1,581 additions and 922 deletions.
4 changes: 4 additions & 0 deletions MAINTAINERS
Original file line number Diff line number Diff line change
Expand Up @@ -591,6 +591,10 @@ Po-Yu Chuang <[email protected]>

a320evb FA526 (ARM920T-like) (a320 SoC)

Eric Cooper <[email protected]>

dockstar ARM926EJS (Kirkwood SoC)

George G. Davis <[email protected]>

assabet SA1100
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47 changes: 13 additions & 34 deletions arch/arm/cpu/arm1176/start.S
Original file line number Diff line number Diff line change
Expand Up @@ -123,34 +123,6 @@ _bss_start_ofs:
_bss_end_ofs:
.word _end - _start

.globl _datarel_start_ofs
_datarel_start_ofs:
.word __datarel_start - _start

.globl _datarelrolocal_start_ofs
_datarelrolocal_start_ofs:
.word __datarelrolocal_start - _start

.globl _datarellocal_start_ofs
_datarellocal_start_ofs:
.word __datarellocal_start - _start

.globl _datarelro_start_ofs
_datarelro_start_ofs:
.word __datarelro_start - _start

.globl _rel_dyn_start_ofs
_rel_dyn_start_ofs:
.word __rel_dyn_start - _start

.globl _rel_dyn_end_ofs
_rel_dyn_end_ofs:
.word __rel_dyn_end - _start

.globl _dynsym_start_ofs
_dynsym_start_ofs:
.word __dynsym_start - _start

/* IRQ stack memory (calculated at run-time) + 8 bytes */
.globl IRQ_STACK_START_IN
IRQ_STACK_START_IN:
Expand Down Expand Up @@ -300,13 +272,13 @@ copy_loop:
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 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? */
cmp r8, #23 /* relative fixup? */
beq fixrel
cmp r8, #2 /* absolute fixup? */
cmp r8, #2 /* absolute fixup? */
beq fixabs
/* ignore unknown type of fixup */
b fixnext
Expand All @@ -315,15 +287,15 @@ fixabs:
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 */
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 */
add r2, r2, #8 /* each rel.dyn entry is 8 bytes */
cmp r2, r3
blo fixloop
#endif
Expand Down Expand Up @@ -408,6 +380,13 @@ _board_init_r_ofs:
.word board_init_r - _start
#endif

_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

#ifdef CONFIG_ENABLE_MMU
_mmu_table_base:
.word mmu_table
Expand Down
119 changes: 61 additions & 58 deletions arch/arm/cpu/arm720t/start.S
Original file line number Diff line number Diff line change
Expand Up @@ -81,14 +81,17 @@ _TEXT_BASE:

/*
* 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
_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) */
Expand All @@ -107,30 +110,6 @@ FIQ_STACK_START:
IRQ_STACK_START_IN:
.word 0x0badc0de

.globl _datarel_start
_datarel_start:
.word __datarel_start

.globl _datarelrolocal_start
_datarelrolocal_start:
.word __datarelrolocal_start

.globl _datarellocal_start
_datarellocal_start:
.word __datarellocal_start

.globl _datarelro_start
_datarelro_start:
.word __datarelro_start

.globl _got_start
_got_start:
.word __got_start

.globl _got_end
_got_end:
.word __got_end

/*
* the actual reset code
*/
Expand Down Expand Up @@ -184,9 +163,8 @@ stack_setup:

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
beq clear_bss

Expand All @@ -197,35 +175,53 @@ copy_loop:
blo copy_loop

#ifndef CONFIG_PRELOADER
/* fix got entries */
ldr r1, _TEXT_BASE /* 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
blo fixloop
#endif

clear_bss:
#ifndef CONFIG_PRELOADER
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 */

Expand All @@ -242,18 +238,25 @@ clbss_l:str r2, [r0] /* clear loop... */
* We are done. Do not return, instead branch to second part of board
* initialization, now running from 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
add lr, lr, r9
/* 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

/*
*************************************************************************
Expand Down
39 changes: 24 additions & 15 deletions arch/arm/cpu/arm720t/u-boot.lds
Original file line number Diff line number Diff line change
Expand Up @@ -40,29 +40,38 @@ SECTIONS

. = ALIGN(4);
.data : {
*(.data)
__datarel_start = .;
*(.data.rel)
__datarelrolocal_start = .;
*(.data.rel.ro.local)
__datarellocal_start = .;
*(.data.rel.local)
__datarelro_start = .;
*(.data.rel.ro)
}

__got_start = .;
. = ALIGN(4);
.got : { *(.got) }

__got_end = .;
. = .;
__u_boot_cmd_start = .;
.u_boot_cmd : { *(.u_boot_cmd) }
__u_boot_cmd_end = .;

. = ALIGN(4);
__bss_start = .;
.bss (NOLOAD) : { *(.bss) . = ALIGN(4); }
_end = .;

.rel.dyn : {
__rel_dyn_start = .;
*(.rel*)
__rel_dyn_end = .;
}

.dynsym : {
__dynsym_start = .;
*(.dynsym)
}

.bss __rel_dyn_start (OVERLAY) : {
__bss_start = .;
*(.bss)
. = ALIGN(4);
_end = .;
}

/DISCARD/ : { *(.dynstr*) }
/DISCARD/ : { *(.dynamic*) }
/DISCARD/ : { *(.plt*) }
/DISCARD/ : { *(.interp*) }
/DISCARD/ : { *(.gnu*) }
}
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