Signed-off-by: Heiko Schocher hs@denx.de --- arch/arm/config.mk | 2 ++ arch/arm/cpu/arm926ejs/start.S | 8 ++++---- board/karo/tx25/config.mk | 2 +- include/configs/tx25.h | 3 ++- nand_spl/board/karo/tx25/u-boot.lds | 13 +++++++++++++ 5 files changed, 22 insertions(+), 6 deletions(-)

diff --git a/arch/arm/config.mk b/arch/arm/config.mk index 0be47d3..21c1e33 100644 --- a/arch/arm/config.mk +++ b/arch/arm/config.mk @@ -70,5 +70,7 @@ LDSCRIPT := $(SRCTREE)/$(CPUDIR)/u-boot.lds

ifndef CONFIG_SYS_ARM_WITHOUT_RELOC # needed for relocation +ifndef CONFIG_NAND_SPL PLATFORM_LDFLAGS += -pie endif +endif diff --git a/arch/arm/cpu/arm926ejs/start.S b/arch/arm/cpu/arm926ejs/start.S index 49ca839..e882487 100644 --- a/arch/arm/cpu/arm926ejs/start.S +++ b/arch/arm/cpu/arm926ejs/start.S @@ -279,10 +279,10 @@ clbss_l:str r2, [r0] /* clear loop... */ */ #ifdef CONFIG_NAND_SPL ldr r0, _nand_boot_ofs - adr r1, _start - add pc, r0, r1 -_nand_boot_ofs - : .word nand_boot - _start + mov pc, r0 + +_nand_boot_ofs: + .word nand_boot #else ldr r0, _board_init_r_ofs adr r1, _start diff --git a/board/karo/tx25/config.mk b/board/karo/tx25/config.mk index 51ca1ab..8be6466 100644 --- a/board/karo/tx25/config.mk +++ b/board/karo/tx25/config.mk @@ -1,5 +1,5 @@ ifdef CONFIG_NAND_SPL TEXT_BASE = 0x810c0000 else -TEXT_BASE = 0x81fc0000 +TEXT_BASE = 0x81200000 endif diff --git a/include/configs/tx25.h b/include/configs/tx25.h index c798570..2be3699 100644 --- a/include/configs/tx25.h +++ b/include/configs/tx25.h @@ -41,7 +41,7 @@ #define CONFIG_SYS_NAND_U_BOOT_OFFS 0x800 #define CONFIG_SYS_NAND_U_BOOT_SIZE 0x30000

-#define CONFIG_SYS_NAND_U_BOOT_DST (0x81fc0000) +#define CONFIG_SYS_NAND_U_BOOT_DST (0x81200000) #define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_NAND_U_BOOT_DST

#define CONFIG_SYS_NAND_PAGE_SIZE 2048 @@ -178,6 +178,7 @@

/* additions for new relocation code, must added to all boards */ #undef CONFIG_SYS_ARM_WITHOUT_RELOC /* This board is tested with relocation support */ +#define CONFIG_RELOC_FIXUP_WORKS #define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1 #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + 0x1000 - /* Fix this */ \ CONFIG_SYS_GBL_DATA_SIZE) diff --git a/nand_spl/board/karo/tx25/u-boot.lds b/nand_spl/board/karo/tx25/u-boot.lds index c572557..5f95c87 100644 --- a/nand_spl/board/karo/tx25/u-boot.lds +++ b/nand_spl/board/karo/tx25/u-boot.lds @@ -53,6 +53,11 @@ SECTIONS *(.data.rel.ro) }

+ . = ALIGN(4); + __rel_dyn_start = .; + __rel_dyn_end = .; + __dynsym_start = .; + __got_start = .; . = ALIGN(4); .got : { *(.got) } @@ -67,4 +72,12 @@ SECTIONS __bss_start = .; .bss : { *(.bss) } _end = .; + /DISCARD/ : { *(.bss*) } + /DISCARD/ : { *(.dynstr*) } + /DISCARD/ : { *(.dynsym*) } + /DISCARD/ : { *(.dynamic*) } + /DISCARD/ : { *(.hash*) } + /DISCARD/ : { *(.plt*) } + /DISCARD/ : { *(.interp*) } + /DISCARD/ : { *(.gnu*) } }

Signed-off-by: Heiko Schocher hs@denx.de --- arch/arm/cpu/armv7/start.S | 131 ++++++++++++++++++++++++---------------- arch/arm/cpu/armv7/u-boot.lds | 7 ++ arch/arm/lib/cache.c | 2 +- include/configs/omap3_beagle.h | 2 +- 4 files changed, 87 insertions(+), 55 deletions(-)

diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S index c392c5d..d5c053d 100644 --- a/arch/arm/cpu/armv7/start.S +++ b/arch/arm/cpu/armv7/start.S @@ -78,13 +78,13 @@ _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) */ @@ -104,29 +104,29 @@ FIQ_STACK_START: 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 @@ -198,9 +198,8 @@ stack_setup: #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 @@ -213,33 +212,51 @@ copy_loop: 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, 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 */

@@ -255,18 +272,26 @@ clbss_l:str r2, [r0] /* clear loop... */ * 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 r0, r0, r1 + add lr, r0, 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 + #else /* #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC) */ /* * the actual reset code diff --git a/arch/arm/cpu/armv7/u-boot.lds b/arch/arm/cpu/armv7/u-boot.lds index d4fd3fc..88a0fec 100644 --- a/arch/arm/cpu/armv7/u-boot.lds +++ b/arch/arm/cpu/armv7/u-boot.lds @@ -53,6 +53,13 @@ SECTIONS __datarelro_start = .; *(.data.rel.ro) } + . = ALIGN(4); + __rel_dyn_start = .; + .rel.dyn : { *(.rel.dyn) } + __rel_dyn_end = .; + + __dynsym_start = .; + .dynsym : { *(.dynsym) }

__got_start = .; . = ALIGN(4); diff --git a/arch/arm/lib/cache.c b/arch/arm/lib/cache.c index 55b633e..5715168 100644 --- a/arch/arm/lib/cache.c +++ b/arch/arm/lib/cache.c @@ -38,7 +38,7 @@ void flush_cache (unsigned long dummy1, unsigned long dummy2) /* disable write buffer as well (page 2-22) */ asm("mcr p15, 0, %0, c7, c10, 4" : : "r" (0)); #endif -#ifdef CONFIG_ARMCORTEXA8 +#ifdef CONFIG_ARMV7 void v7_flush_cache_all(void);

v7_flush_cache_all(); diff --git a/include/configs/omap3_beagle.h b/include/configs/omap3_beagle.h index 2463be4..cf73f27 100644 --- a/include/configs/omap3_beagle.h +++ b/include/configs/omap3_beagle.h @@ -341,7 +341,7 @@ extern unsigned int boot_flash_type; #endif

/* additions for new relocation code, must added to all boards */ -#undef CONFIG_SYS_ARM_WITHOUT_RELOC /* This board is tested with relocation support */ +#define CONFIG_RELOC_FIXUP_WORKS #define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1 #define CONFIG_SYS_INIT_SP_ADDR (LOW_LEVEL_SRAM_STACK - CONFIG_SYS_GBL_DATA_SIZE)