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arm, arm926ejs: Fix clear bss loop for zero length bss

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This patch fixes the clear bss loop for bss sections that have
zero length, i.e., where __bss_start == __bss_end__.

Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
This commit is contained in:
Christian Riesch 2011-11-30 22:27:37 +00:00 committed by Albert ARIBAUD
parent ef426d45cc
commit 8f1da53508
1 changed files with 5 additions and 3 deletions
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8
arch/arm/cpu/arm926ejs/start.S
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@ -301,10 +301,12 @@ clear_bss:
#endif #endif
mov r2, #0x00000000 /* clear */ mov r2, #0x00000000 /* clear */
clbss_l:str r2, [r0] /* clear loop... */ clbss_l:cmp r0, r1 /* clear loop... */
bhs clbss_e /* if reached end of bss, exit */
str r2, [r0]
add r0, r0, #4 add r0, r0, #4
cmp r0, r1 b clbss_l
bne clbss_l clbss_e:
#ifndef CONFIG_SPL_BUILD #ifndef CONFIG_SPL_BUILD
bl coloured_LED_init bl coloured_LED_init