[U-Boot] [PATCH] powerpc, mpc5xxx: fix missing bootflag init

[Heiko Schocher]

since:
commit: f05ad9ba "Add a way to skip relocation"

tqm5200s board fails to boot. Reason is that
board_init_f has a function parameter bootflag,
which is not setup in
in arch/powerpc/cpu/mpc5xxx/start.S _start

So board_init_f gets a undefined bootflag,
currently the gd pointer address. Unfortunately
this address sets the GD_FLG_SKIP_RELOC bit,
so u-boot code gets not relocated and u-boot
does not boot ...

Init bootflag with 0, and tqm5200 boots fine again.

Signed-off-by: Heiko Schocher <hs at denx.de>
---
I added a nightly build to:
http://xeidos.ddns.net/buildbot/waterfall
http://xeidos.ddns.net/buildbot/builders/tqm5200s_ml_ub

What does this nightly build:
- checkout current u-boot mainline code
- compile u-boot for tqm5200s board
- install u-boot image on the board with bdi
- run the image, and look if u-boot boots
ToDo:
- add more tbot [1] tests for this board

Currently failing, as this patch is not in mainline,
but it should go to green, if this patch is applied,
cross your fingers ;-)

[1] https://github.com/hsdenx/tbot

 arch/powerpc/cpu/mpc5xxx/start.S | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/cpu/mpc5xxx/start.S b/arch/powerpc/cpu/mpc5xxx/start.S
index 94eb0d3..54793f0 100644
--- a/arch/powerpc/cpu/mpc5xxx/start.S
+++ b/arch/powerpc/cpu/mpc5xxx/start.S
@@ -91,6 +91,7 @@ _start:
 	li	r5,GD_SIZE	/* parameter 3:	 count			*/
 	bl	memset
 
+	li	r3, 0		/* parameter 1:	 bootflag		*/
 	bl	board_init_f	/* run 1st part of board init code (in Flash)*/
 	/* NOTREACHED - board_init_f() does not return */
 #else
@@ -169,6 +170,7 @@ lowboot_reentry:
 	/* r3: IMMR */
 	bl	cpu_init_f	/* run low-level CPU init code (in Flash)*/
 
+	li	r3, 0		/* parameter 1:	 bootflag		*/
 	bl	board_init_f	/* run 1st part of board init code (in Flash)*/
 
 	/* NOTREACHED - board_init_f() does not return */
-- 
2.1.0