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| author | Will Deacon <will.deacon@arm.com> | 2011-02-28 19:01:04 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-03-20 12:32:21 +0300 |
| commit | 80b5efbd43f0a21e9fc6db87823be32fcfe3e7ce (patch) | |
| tree | 12a213968fa7c0bac41ff539f82ba64f0e979c4c /arch/arm/mach-vexpress/platsmp.c | |
| parent | 196f020fbbb83d246960548e73a40fd08f3e7866 (diff) | |
| download | linux-80b5efbd43f0a21e9fc6db87823be32fcfe3e7ce.tar.xz | |
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 <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-vexpress/platsmp.c')
| -rw-r--r-- | arch/arm/mach-vexpress/platsmp.c | 31 |
1 files changed, 2 insertions, 29 deletions
diff --git a/arch/arm/mach-vexpress/platsmp.c b/arch/arm/mach-vexpress/platsmp.c index 18927023c2cc..2b5f7ac001a3 100644 --- a/arch/arm/mach-vexpress/platsmp.c +++ b/arch/arm/mach-vexpress/platsmp.c @@ -13,10 +13,8 @@ #include <linux/smp.h> #include <linux/io.h> -#include <asm/smp_scu.h> #include <asm/unified.h> -#include <mach/ct-ca9x4.h> #include <mach/motherboard.h> #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 |