From 80b5efbd43f0a21e9fc6db87823be32fcfe3e7ce Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Mon, 28 Feb 2011 17:01:04 +0100 Subject: ARM: 6771/1: vexpress: add support for multiple core tiles The current Versatile Express BSP defines the MACHINE_START macro in the core tile code. This patch moves this into the generic board code and introduces a method for determining the current tile at runtime, allowing the Kernel to have support for multiple tiles compiled in. Tile-specific functions are executed via a descriptor struct containing the correct implementations for the current tile. Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/mach-vexpress/platsmp.c | 31 ++----------------------------- 1 file changed, 2 insertions(+), 29 deletions(-) (limited to 'arch/arm/mach-vexpress/platsmp.c') diff --git a/arch/arm/mach-vexpress/platsmp.c b/arch/arm/mach-vexpress/platsmp.c index 1892702..2b5f7ac 100644 --- a/arch/arm/mach-vexpress/platsmp.c +++ b/arch/arm/mach-vexpress/platsmp.c @@ -13,10 +13,8 @@ #include #include -#include #include -#include #include #define V2M_PA_CS7 0x10000000 @@ -24,47 +22,22 @@ extern void versatile_secondary_startup(void); -static void __iomem *scu_base_addr(void) -{ - return MMIO_P2V(A9_MPCORE_SCU); -} - /* * Initialise the CPU possible map early - this describes the CPUs * which may be present or become present in the system. */ void __init smp_init_cpus(void) { - void __iomem *scu_base = scu_base_addr(); - unsigned int i, ncores; - - ncores = scu_base ? scu_get_core_count(scu_base) : 1; - - /* sanity check */ - if (ncores > NR_CPUS) { - printk(KERN_WARNING - "vexpress: no. of cores (%d) greater than configured " - "maximum of %d - clipping\n", - ncores, NR_CPUS); - ncores = NR_CPUS; - } - - for (i = 0; i < ncores; i++) - set_cpu_possible(i, true); + ct_desc->init_cpu_map(); } void __init platform_smp_prepare_cpus(unsigned int max_cpus) { - int i; - /* * Initialise the present map, which describes the set of CPUs * actually populated at the present time. */ - for (i = 0; i < max_cpus; i++) - set_cpu_present(i, true); - - scu_enable(scu_base_addr()); + ct_desc->smp_enable(max_cpus); /* * Write the address of secondary startup into the -- cgit v1.1