[RFC v2 PATCH 08/23] ARM: NOMMU: implement secondary_startup_arm
flat view
STALE3608d
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From: linux@armlinux.org.uk (Russell King - ARM Linux)
Date: 2016-11-29 17:14:32
Revision v2 of 5 in this series.
Revisions (5)
- rfc [diff vs current]
- v2
- v2 current
- v2
- v3 [diff vs current]
On Tue, Nov 29, 2016 at 12:39:50PM +0000, Vladimir Murzin wrote:
Mediatek's and Qualcomm's platform code has reference to secondary_startup_arm and that breaks NOMMU build.
This needs to explain why this is safe in the presence of EFM32.
quoted hunk ↗ jump to hunk
Cc: Russell King <linux@armlinux.org.uk> Signed-off-by: Vladimir Murzin <redacted> --- arch/arm/kernel/head-nommu.S | 7 +++++++ 1 file changed, 7 insertions(+)diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S index 7317554..2ab026f 100644 --- a/arch/arm/kernel/head-nommu.S +++ b/arch/arm/kernel/head-nommu.S@@ -89,6 +89,12 @@ ENDPROC(stext) #ifdef CONFIG_SMP .text + .arm +ENTRY(secondary_startup_arm) + THUMB( badr r9, 1f ) @ Kernel is entered in ARM. + THUMB( bx r9 ) @ If this is a Thumb-2 kernel, + THUMB( .thumb ) @ switch to Thumb now. + THUMB(1: ) ENTRY(secondary_startup) /* * Common entry point for secondary CPUs.@@ -126,6 +132,7 @@ ENTRY(secondary_startup) mov fp, #0 b secondary_start_kernel ENDPROC(secondary_startup) +ENDPROC(secondary_startup_arm) .type __secondary_data, %object __secondary_data:-- 1.7.9.5
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