linux/arch/arm/mach-omap2/omap-headsmp.S
Russell King 45176f4cf7 ARM: omap: fix section mismatch warning for omap_secondary_startup()
WARNING: vmlinux.o(.text+0x1c664): Section mismatch in reference from the function omap_secondary_startup() to the function .cpuinit.text:secondary_startup()
The function omap_secondary_startup() references
the function __cpuinit secondary_startup().
This is often because omap_secondary_startup lacks a __cpuinit
annotation or the annotation of secondary_startup is wrong.

Unfortunately, fixing this causes a new warning which is harder to
solve:

WARNING: arch/arm/mach-omap2/built-in.o(.text+0x5328): Section mismatch in reference from the function omap4_hotplug_cpu() to the function .cpuinit.text:omap_secondary_startup()
The function omap4_hotplug_cpu() references
the function __cpuinit omap_secondary_startup().
This is often because omap4_hotplug_cpu lacks a __cpuinit
annotation or the annotation of omap_secondary_startup is wrong.

because omap4_hotplug_cpu() is used by power management code as well,
which may not end up using omap_secondary_startup().

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-13 10:00:37 +00:00

46 lines
1.2 KiB
ArmAsm

/*
* Secondary CPU startup routine source file.
*
* Copyright (C) 2009 Texas Instruments, Inc.
*
* Author:
* Santosh Shilimkar <santosh.shilimkar@ti.com>
*
* Interface functions needed for the SMP. This file is based on arm
* realview smp platform.
* Copyright (c) 2003 ARM Limited.
*
* This program is free software,you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/linkage.h>
#include <linux/init.h>
__CPUINIT
/*
* OMAP4 specific entry point for secondary CPU to jump from ROM
* code. This routine also provides a holding flag into which
* secondary core is held until we're ready for it to initialise.
* The primary core will update this flag using a hardware
* register AuxCoreBoot0.
*/
ENTRY(omap_secondary_startup)
hold: ldr r12,=0x103
dsb
smc #0 @ read from AuxCoreBoot0
mov r0, r0, lsr #9
mrc p15, 0, r4, c0, c0, 5
and r4, r4, #0x0f
cmp r0, r4
bne hold
/*
* we've been released from the wait loop,secondary_stack
* should now contain the SVC stack for this core
*/
b secondary_startup
ENDPROC(omap_secondary_startup)