Hi Aneesh, On Mon, Feb 28, 2011 at 7:46 PM, Aneesh V <ane...@ti.com> wrote: > _bss_start_ofs is used in start.S to indicate end of copied > image. This may not be correct when we have a discontiguous > memory map. For instance, .bss may be placed in SDRAM for > some SPLS while rest of the image is placed in SRAM. > > Define a new label in linker script to indicate the end of the > image copied during relocation and use it appropriately in > start.S. > > Also, add a new label to indicate the end of flash image. > This will be useful in identifying the size of flash image > > Signed-off-by: Aneesh V <ane...@ti.com> > --- > arch/arm/cpu/armv7/start.S | 6 +++++- > arch/arm/cpu/armv7/u-boot.lds | 4 ++++ > 2 files changed, 9 insertions(+), 1 deletions(-) > > diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S > index 3618190..8215d26 100644 > --- a/arch/arm/cpu/armv7/start.S > +++ b/arch/arm/cpu/armv7/start.S > @@ -77,6 +77,10 @@ _TEXT_BASE: > _bss_start_ofs: > .word __bss_start - _start > > +.global _image_copy_end_ofs > +_image_copy_end_ofs: > + .word __image_copy_end - _start > + > .globl _bss_end_ofs > _bss_end_ofs: > .word _end - _start > @@ -172,7 +176,7 @@ stack_setup: > beq clear_bss /* skip relocation */ > #endif > mov r1, r6 /* r1 <- scratch for copy_loop */ > - ldr r3, _bss_start_ofs > + ldr r3, _image_copy_end_ofs > add r2, r0, r3 /* r2 <- source end address */ > > copy_loop: > diff --git a/arch/arm/cpu/armv7/u-boot.lds b/arch/arm/cpu/armv7/u-boot.lds > index 5725c30..c3ad587 100644 > --- a/arch/arm/cpu/armv7/u-boot.lds > +++ b/arch/arm/cpu/armv7/u-boot.lds > @@ -55,6 +55,8 @@ SECTIONS > > . = ALIGN(4); > > + __image_copy_end = .; > + > .rel.dyn : { > __rel_dyn_start = .; > *(.rel*) > @@ -66,6 +68,8 @@ SECTIONS > *(.dynsym) > } > > + __flash_image_end = .; > + > .bss __rel_dyn_start (OVERLAY) : { > __bss_start = .; > *(.bss)
There is a patch series which makes _end as end of image and has been applied to arm branch. [U-Boot] [PATCH 1/2 v2] rename _end to __bss_end__ http://lists.denx.de/pipermail/u-boot/2011-March/088166.html [U-Boot] [PATCH 2/2 v2] arm: fix incorrect monitor protection region in FLASH http://lists.denx.de/pipermail/u-boot/2011-March/088139.html You can use the newly added symbol _end_ofs to replace your __flash_image_end here. best regards, Po-Yu Chuang _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot