powerpc/mpc83xx: Zero boot_flags arg for calling board_init_f()

The argument boot_flags of board_init_f() is not used at all in the
powerpc specific board.c init sequence. Now with the generic init
sequence, this boot_flags arg is used by board_init_f().

This patch sets the r3 register that is used to pass the boot_flags
argument from the start.S board_init_f() call to 0 prior to the function
call to avoid unknown content to end up in gd->flags.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Reviewed-by: York Sun <yorksun@freescale.com>

diff --git a/arch/powerpc/cpu/mpc83xx/start.S b/arch/powerpc/cpu/mpc83xx/start.S
index af75c63eb3fe34a90adf1417247bc0c6bb4e2326..9bd86d82d6e8b3ced9a9168b0fb0dede2feeedfb 100644 (file)
--- a/arch/powerpc/cpu/mpc83xx/start.S
+++ b/arch/powerpc/cpu/mpc83xx/start.S
@@ -283,6 +283,7 @@ in_flash:
        bl      cpu_init_f
 
        /* run 1st part of board init code (in Flash)*/
+       li      r3, 0           /* clear boot_flag for calling board_init_f */
        bl      board_init_f
 
        /* NOTREACHED - board_init_f() does not return */