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x86: Add an __end symbol to signal the end of the U-Boot binary

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With this symbol we can easy append something (e.g. an FDT) to the U-Boot
binary and access it from within U-Boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2013-02-28 19:26:13 +00:00
parent bc2df1afb9
commit 4b491b8dde
3 changed files with 4 additions and 1 deletions
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2
arch/x86/cpu/u-boot.lds
View File

@ -67,6 +67,8 @@ SECTIONS
__rel_dyn_start = .;
.rel.dyn : { *(.rel.dyn) }
__rel_dyn_end = .;
. = ALIGN(4);
_end = .;
/DISCARD/ : { *(.dynstr*) }
/DISCARD/ : { *(.dynamic*) }

1
arch/x86/include/asm/u-boot-x86.h
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@ -31,6 +31,7 @@ extern ulong __rel_dyn_start;
extern ulong __rel_dyn_end;
extern ulong __bss_start;
extern ulong __bss_end;
extern ulong _end;
/* cpu/.../cpu.c */
int x86_cpu_init_r(void);

2
arch/x86/lib/init_helpers.c
View File

@ -188,7 +188,7 @@ int find_fdt(void)
gd->fdt_blob = _binary_dt_dtb_start;
#elif defined CONFIG_OF_SEPARATE
/* FDT is at end of image */
gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
gd->fdt_blob = (ulong *)&_end;
#endif
/* Allow the early environment to override the fdt address */
gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,