From 5fcafb7a23e35b2f1a5243f4dd536240f52c8ceb Mon Sep 17 00:00:00 2001 From: Daniel Hellstrom Date: Thu, 21 Apr 2011 04:20:23 +0000 Subject: sparc32: always define boot_cpu_id Define boot_cpu_id in single-processor kernels as well. This is to support architectures which can boot on other than CPU0. Sam Ravnborg has written the cleanup parts by extracting boot_cpu_id from smp_32.c into setup_32.c and cleaned up sun4d_irq.c. boot_cpu_id was initialized before BSS was cleared in sun4c_continue_boot, instead boot_cpu_id is set to 0xff to avoid BSS. If boot_cpu_id is untouched (0xff) by bootup code it will be overwritten to 0. boot_cpu_id4 is automatically calculated in common code. Signed-off-by: Daniel Hellstrom Signed-off-by: David S. Miller --- arch/sparc/include/asm/setup.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'arch/sparc/include') diff --git a/arch/sparc/include/asm/setup.h b/arch/sparc/include/asm/setup.h index 2643c62f4ac0..64718ba26434 100644 --- a/arch/sparc/include/asm/setup.h +++ b/arch/sparc/include/asm/setup.h @@ -11,4 +11,16 @@ # define COMMAND_LINE_SIZE 256 #endif +#ifdef __KERNEL__ + +#ifdef CONFIG_SPARC32 +/* The CPU that was used for booting + * Only sun4d + leon may have boot_cpu_id != 0 + */ +extern unsigned char boot_cpu_id; +extern unsigned char boot_cpu_id4; +#endif + +#endif /* __KERNEL__ */ + #endif /* _SPARC_SETUP_H */ -- cgit v1.2.3