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authorCatalin Marinas <catalin.marinas@arm.com>2009-07-24 12:33:00 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2009-07-24 12:33:00 +0100
commitdff2ab16ac53d2e21c1ee5ec72f446d5740d8ca2 (patch)
tree728576b978b00260b3a54bdbecfcd5b1999de5c2 /arch/arm/mach-realview/platsmp.c
parentadca6dc23bc620ea95392659625200a252b97be3 (diff)
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: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm/mach-realview/platsmp.c')
-rw-r--r--arch/arm/mach-realview/platsmp.c18
1 files changed, 6 insertions, 12 deletions
diff --git a/arch/arm/mach-realview/platsmp.c b/arch/arm/mach-realview/platsmp.c
index ac0e83f1cc3..a88458b4799 100644
--- a/arch/arm/mach-realview/platsmp.c
+++ b/arch/arm/mach-realview/platsmp.c
@@ -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();
}