From: John Jacques <john.jacq...@lsi.com>
Signed-off-by: John Jacques <john.jacq...@lsi.com>
---
arch/arm/mach-axxia/headsmp.S | 30 +++++++++++++++++++++++++++++-
1 file changed, 29 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-axxia/headsmp.S b/arch/arm/mach-axxia/headsmp.S
index 6a36f38..f467cc5 100644
--- a/arch/arm/mach-axxia/headsmp.S
+++ b/arch/arm/mach-axxia/headsmp.S
@@ -28,7 +28,35 @@ ENTRY(axxia_secondary_startup)
sub r4, r4, r5
add r6, r6, r4
pen: ldr r7, [r6]
- cmp r7, r0
+ /*
+ * It seems that just looping over read/compare kills starves
+ * ethernet, this will happen if we start the kernel with
+ * maxcpus=X where X < 16. Which we really want in order to
+ * isolate cores.
+ *
+ * FIXME: We should really use wfi or wfe here
+ */
+ mov r4, #0x7000
+__delay:
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ nop
+ subs r4,r4,#1
+ bne __delay
+ cmp r7, r0
bne pen
/*
--
1.8.3.4
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