diff options
Diffstat (limited to 'arch/arm/lib/crt0.S')
| -rw-r--r-- | arch/arm/lib/crt0.S | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/lib/crt0.S b/arch/arm/lib/crt0.S index dfc2de9a61..29cdad0f70 100644 --- a/arch/arm/lib/crt0.S +++ b/arch/arm/lib/crt0.S @@ -67,10 +67,22 @@ ENTRY(_main) ldr sp, =(CONFIG_SYS_INIT_SP_ADDR) #endif bic sp, sp, #7 /* 8-byte alignment for ABI compliance */ + mov r2, sp sub sp, sp, #GD_SIZE /* allocate one GD above SP */ bic sp, sp, #7 /* 8-byte alignment for ABI compliance */ mov r9, sp /* GD is above SP */ + mov r1, sp mov r0, #0 +clr_gd: + cmp r1, r2 /* while not at end of GD */ + strlo r0, [r1] /* clear 32-bit GD word */ + addlo r1, r1, #4 /* move to next */ + blo clr_gd +#if defined(CONFIG_SYS_MALLOC_F_LEN) && !defined(CONFIG_SPL_BUILD) + sub sp, sp, #CONFIG_SYS_MALLOC_F_LEN + str sp, [r9, #GD_MALLOC_BASE] +#endif + /* mov r0, #0 not needed due to above code */ bl board_init_f #if ! defined(CONFIG_SPL_BUILD) |