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Commit dff2ab16 authored by Catalin Marinas's avatar Catalin Marinas
Browse files

Thumb-2: Pass a Thumb-2 address to the secondary CPUs to jump to 



This patch sets bit 0 in the startup address passed to the secondary
CPUs so that they branch into Thumb-2 mode.

Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent adca6dc2

arch/arm/mach-realview/platsmp.c

+6 −12
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include <mach/hardware.h>

#include <asm/mach-types.h>

#include <asm/localtimer.h>

#include <asm/unified.h>



#include <mach/board-eb.h>

#include <mach/board-pb11mp.h>
@@ -137,26 +138,19 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) 


static void __init poke_milo(void)

{

	extern void secondary_startup(void);



	/* nobody is to be released from the pen yet */

	pen_release = -1;



	/*

	 * write the address of secondary startup into the system-wide

	 * flags register, then clear the bottom two bits, which is what

	 * BootMonitor is waiting for

	 * Write the address of secondary startup into the system-wide flags

	 * register. The BootMonitor waits for this register to become

	 * non-zero.

	 */

#if 1

#define REALVIEW_SYS_FLAGSS_OFFSET 0x30

	__raw_writel(virt_to_phys(realview_secondary_startup),

		     __io_address(REALVIEW_SYS_BASE) +

		     REALVIEW_SYS_FLAGSS_OFFSET);

#define REALVIEW_SYS_FLAGSC_OFFSET 0x34

	__raw_writel(3,

	__raw_writel(BSYM(virt_to_phys(realview_secondary_startup)),

		     __io_address(REALVIEW_SYS_BASE) +

		     REALVIEW_SYS_FLAGSC_OFFSET);

#endif

		     REALVIEW_SYS_FLAGSS_OFFSET);



	mb();

}