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Change stub example to use asm-generic/sections.h

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We can use the declarations of __bss_start and _end from this header
instead of declaring them locally.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2013-03-05 14:39:39 +00:00 • committed by Tom Rini
parent e103b7ae90
commit 716cc8cc7f
4 changed files with 12 additions and 13 deletions
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4
arch/mips/include/asm/u-boot-mips.h
View file

@ -7,7 +7,7 @@
static inline unsigned long bss_start(void) static inline unsigned long bss_start(void)
{ {
extern ulong __bss_start; extern char __bss_start[];
return (unsigned long) &__bss_start; return (unsigned long) &__bss_start;
} }
@ -19,7 +19,7 @@ static inline unsigned long bss_end(void)
static inline unsigned long image_copy_end(void) static inline unsigned long image_copy_end(void)
{ {
extern ulong __image_copy_end; extern char __image_copy_end[];
return (unsigned long) &__image_copy_end; return (unsigned long) &__image_copy_end;
} }

8
arch/nds32/include/asm/u-boot-nds32.h
View file

@ -30,10 +30,10 @@
#define _U_BOOT_NDS32_H_ 1 #define _U_BOOT_NDS32_H_ 1
/* for the following variables, see start.S */ /* for the following variables, see start.S */
extern ulong __bss_start; /* BSS start relative to _start */ extern char __bss_start[]; /* BSS start relative to _start */
extern ulong __bss_end; /* BSS end relative to _start */ extern ulong __bss_end; /* BSS end relative to _start */
extern ulong _end; /* end of image relative to _start */ extern char _end[]; /* end of image relative to _start */
extern ulong _start; /* start of image relative to _start */ extern void _start(void); /* start of image relative to _start */
extern ulong _TEXT_BASE; /* code start */ extern ulong _TEXT_BASE; /* code start */
extern ulong IRQ_STACK_START; /* top of IRQ stack */ extern ulong IRQ_STACK_START; /* top of IRQ stack */
extern ulong FIQ_STACK_START; /* top of FIQ stack */ extern ulong FIQ_STACK_START; /* top of FIQ stack */

6
arch/x86/include/asm/u-boot-x86.h
View file

@ -25,13 +25,13 @@
#define _U_BOOT_I386_H_ 1 #define _U_BOOT_I386_H_ 1
/* Exports from the Linker Script */ /* Exports from the Linker Script */
extern ulong __text_start; extern char __text_start[];
extern ulong __data_end; extern ulong __data_end;
extern ulong __rel_dyn_start; extern ulong __rel_dyn_start;
extern ulong __rel_dyn_end; extern ulong __rel_dyn_end;
extern ulong __bss_start; extern char __bss_start[];
extern ulong __bss_end; extern ulong __bss_end;
extern ulong _end; extern char _end[];
/* cpu/.../cpu.c */ /* cpu/.../cpu.c */
int x86_cpu_init_r(void); int x86_cpu_init_r(void);

7
examples/standalone/stubs.c
View file

@ -217,16 +217,15 @@ void __attribute__((unused)) dummy(void)
#include <_exports.h> #include <_exports.h>
} }
extern unsigned long __bss_start, _end; #include <asm/sections.h>
void app_startup(char * const *argv) void app_startup(char * const *argv)
{ {
unsigned char * cp = (unsigned char *) &__bss_start; char *cp = __bss_start;
/* Zero out BSS */ /* Zero out BSS */
while (cp < (unsigned char *)&_end) { while (cp < _end)
*cp++ = 0; *cp++ = 0;
}
#if defined(CONFIG_X86) #if defined(CONFIG_X86)
/* x86 does not have a dedicated register for passing global_data */ /* x86 does not have a dedicated register for passing global_data */