bool
default n
+ +config GENERIC_CLOCKEVENTS
+ + bool
+ + default n
+ +
config MMU
bool
default y
bool
default y
+ +config STACKTRACE_SUPPORT
+ + bool
+ + default y
+ +
+ +config LOCKDEP_SUPPORT
+ + bool
+ + default y
+ +
config TRACE_IRQFLAGS_SUPPORT
bool
default y
select ARM_AMBA
select ARM_VIC
select ICST307
+ + select GENERIC_TIME
+ + select GENERIC_CLOCKEVENTS
help
This enables support for ARM Ltd Versatile board.
depends on MMU
select PLAT_IOP
select PCI
+ + select ARCH_SUPPORTS_MSI
help
Support for Intel's IOP13XX (XScale) family of processors.
bool "IXP4xx-based"
depends on MMU
select GENERIC_TIME
+ + select GENERIC_CLOCKEVENTS
help
Support for Intel's IXP4XX (XScale) family of processors.
config ARCH_S3C2410
bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
select GENERIC_GPIO
+++ select GENERIC_TIME
help
Samsung S3C2410X CPU based systems, such as the Simtec Electronics
BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
config ARCH_OMAP
bool "TI OMAP"
select GENERIC_GPIO
+ + select GENERIC_TIME
help
Support for TI's OMAP platform (OMAP1 and OMAP2).
menu "Kernel Features"
+ +source "kernel/time/Kconfig"
+ +
config SMP
bool "Symmetric Multi-Processing (EXPERIMENTAL)"
depends on EXPERIMENTAL && REALVIEW_MPCORE
config NO_IDLE_HZ
bool "Dynamic tick timer"
+ + depends on !GENERIC_CLOCKEVENTS
help
Select this option if you want to disable continuous timer ticks
and have them programmed to occur as required. This option saves
bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
depends on LEDS
+ + depends on !GENERIC_CLOCKEVENTS
default y if ARCH_EBSA110
help
If you say Y here, one of the system LEDs (the green one on the
#include <asm/mmu_context.h>
#include <asm/tlbflush.h>
-- -unsigned int cpu_last_asid = { 1 << ASID_BITS };
++ +static DEFINE_SPINLOCK(cpu_asid_lock);
++ +unsigned int cpu_last_asid = ASID_FIRST_VERSION;
/*
* We fork()ed a process, and we need a new context for the child
{
unsigned int asid;
++ + spin_lock(&cpu_asid_lock);
asid = ++cpu_last_asid;
if (asid == 0)
-- - asid = cpu_last_asid = 1 << ASID_BITS;
++ + asid = cpu_last_asid = ASID_FIRST_VERSION;
/*
* If we've used up all our ASIDs, we need
* to start a new version and flush the TLB.
*/
-- - if ((asid & ~ASID_MASK) == 0) {
++ + if (unlikely((asid & ~ASID_MASK) == 0)) {
asid = ++cpu_last_asid;
/* set the reserved ASID before flushing the TLB */
asm("mcr p15, 0, %0, c13, c0, 1 @ set reserved context ID\n"
: "r" (0));
isb();
flush_tlb_all();
+++ if (icache_is_vivt_asid_tagged()) {
+++ asm("mcr p15, 0, %0, c7, c5, 0 @ invalidate I-cache\n"
+++ "mcr p15, 0, %0, c7, c5, 6 @ flush BTAC/BTB\n"
+++ :
+++ : "r" (0));
+++ dsb();
+++ }
}
++ + spin_unlock(&cpu_asid_lock);
++ + mm->cpu_vm_mask = cpumask_of_cpu(smp_processor_id());
mm->context.id = asid;
}
config ARCH_OMAP1
bool "TI OMAP1"
+ + select GENERIC_CLOCKEVENTS
config ARCH_OMAP2
bool "TI OMAP2"
comment "OMAP Feature Selections"
+++ config OMAP_DEBUG_LEDS
+++ bool
+++ help
+++ For debug card leds on TI reference boards.
+++
config OMAP_RESET_CLOCKS
bool "Reset unused clocks during boot"
depends on ARCH_OMAP
to change the pin multiplexing setup. When there are no warnings
printed, it's safe to deselect OMAP_MUX for your product.
+++ config OMAP_MCBSP
+++ bool "McBSP support"
+++ depends on ARCH_OMAP
+++ default y
+++ help
+++ Say Y here if you want support for the OMAP Multichannel
+++ Buffered Serial Port.
+++
choice
prompt "System timer"
default OMAP_MPU_TIMER
* in the kernel. */
for (i = 0; i < omap_board_config_size; i++) {
if (omap_board_config[i].tag == tag) {
--- kinfo = &omap_board_config[i];
--- break;
+++ if (skip == 0) {
+++ kinfo = &omap_board_config[i];
+++ break;
+++ } else {
+++ skip--;
+++ }
}
}
if (kinfo == NULL)
return add_preferred_console("ttyS", line, opt);
}
console_initcall(omap_add_serial_console);
+ +
+ +
+ +/*
+ + * 32KHz clocksource ... always available, on pretty most chips except
+ + * OMAP 730 and 1510. Other timers could be used as clocksources, with
+ + * higher resolution in free-running counter modes (e.g. 12 MHz xtal),
+ + * but systems won't necessarily want to spend resources that way.
+ + */
+ +
+ +#if defined(CONFIG_ARCH_OMAP16XX)
+ +#define TIMER_32K_SYNCHRONIZED 0xfffbc410
+ +#elif defined(CONFIG_ARCH_OMAP24XX)
+ +#define TIMER_32K_SYNCHRONIZED 0x48004010
+ +#endif
+ +
+ +#ifdef TIMER_32K_SYNCHRONIZED
+ +
+ +#include <linux/clocksource.h>
+ +
+ +static cycle_t omap_32k_read(void)
+ +{
+ + return omap_readl(TIMER_32K_SYNCHRONIZED);
+ +}
+ +
+ +static struct clocksource clocksource_32k = {
+ + .name = "32k_counter",
+ + .rating = 250,
+ + .read = omap_32k_read,
+ + .mask = CLOCKSOURCE_MASK(32),
+ + .shift = 10,
+ + .flags = CLOCK_SOURCE_IS_CONTINUOUS,
+ +};
+ +
+ +static int __init omap_init_clocksource_32k(void)
+ +{
+ + static char err[] __initdata = KERN_ERR
+ + "%s: can't register clocksource!\n";
+ +
+ + if (cpu_is_omap16xx() || cpu_is_omap24xx()) {
+ + clocksource_32k.mult = clocksource_hz2mult(32768,
+ + clocksource_32k.shift);
+ +
+ + if (clocksource_register(&clocksource_32k))
+ + printk(err, clocksource_32k.name);
+ + }
+ + return 0;
+ +}
+ +arch_initcall(omap_init_clocksource_32k);
+ +
+ +#endif /* TIMER_32K_SYNCHRONIZED */
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / commitdiff