Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx> wrote @ Tue, 8 Jan 2013 15:26:51 +0100: > On Tue, Jan 08, 2013 at 02:47:37PM +0200, Hiroshi Doyu wrote: > > The method to detect the number of CPU cores on Cortex-A9 MPCore and > > Cortex-A15 MPCore is different. On Cortex-A9 MPCore we can get this > > information from the Snoop Control Unit(SCU). On Cortex-A15 MPCore we > > have to read it from the system coprocessor(CP15), because the SCU on > > Cortex-A15 MPCore does not have software readable registers. This > > patch selects the correct method at runtime based on the CPU ID. > > > > Signed-off-by: Hiroshi Doyu <hdoyu@xxxxxxxxxx> > > --- > > arch/arm/mach-tegra/platsmp.c | 31 ++++++++++++++++++++++++++++--- > > 1 file changed, 28 insertions(+), 3 deletions(-) > > > > diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c > > index 1b926df..68e76ef 100644 > > --- a/arch/arm/mach-tegra/platsmp.c > > +++ b/arch/arm/mach-tegra/platsmp.c > > @@ -23,6 +23,7 @@ > > #include <asm/hardware/gic.h> > > #include <asm/mach-types.h> > > #include <asm/smp_scu.h> > > +#include <asm/cputype.h> > > > > #include <mach/powergate.h> > > > > @@ -34,9 +35,13 @@ > > #include "common.h" > > #include "iomap.h" > > > > +#define CPU_MASK 0xff0ffff0 > > +#define CPU_CORTEX_A9 0x410fc090 > > +#define CPU_CORTEX_A15 0x410fc0f0 > > NAK. There's some patches around to make this stuff generic, we don't > need more ifdefs springing up. We need to get those generic patches > in. Does anyone give some pointers to the above patches? -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
