diff options
author | Marcelo Tosatti <mtosatti@redhat.com> | 2012-10-29 22:15:32 +0100 |
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committer | Marcelo Tosatti <mtosatti@redhat.com> | 2012-10-29 22:15:32 +0100 |
commit | 19bf7f8ac3f8131100027281c495dbbe00cd5ae0 (patch) | |
tree | 270b97e3ca47c0f62a1babca2ae37f79a76a309c /arch/mips/mipssim/sim_time.c | |
parent | KVM: ia64: remove unused variable in kvm_release_vm_pages() (diff) | |
parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sag... (diff) | |
download | linux-19bf7f8ac3f8131100027281c495dbbe00cd5ae0.tar.xz linux-19bf7f8ac3f8131100027281c495dbbe00cd5ae0.zip |
Merge remote-tracking branch 'master' into queue
Merge reason: development work has dependency on kvm patches merged
upstream.
Conflicts:
arch/powerpc/include/asm/Kbuild
arch/powerpc/include/asm/kvm_para.h
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/mips/mipssim/sim_time.c')
-rw-r--r-- | arch/mips/mipssim/sim_time.c | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/arch/mips/mipssim/sim_time.c b/arch/mips/mipssim/sim_time.c deleted file mode 100644 index 77bad3c04280..000000000000 --- a/arch/mips/mipssim/sim_time.c +++ /dev/null @@ -1,117 +0,0 @@ -#include <linux/types.h> -#include <linux/init.h> -#include <linux/kernel_stat.h> -#include <linux/sched.h> -#include <linux/spinlock.h> -#include <linux/interrupt.h> -#include <linux/mc146818rtc.h> -#include <linux/smp.h> -#include <linux/timex.h> - -#include <asm/hardirq.h> -#include <asm/div64.h> -#include <asm/cpu.h> -#include <asm/setup.h> -#include <asm/time.h> -#include <asm/irq.h> -#include <asm/mc146818-time.h> -#include <asm/msc01_ic.h> - -#include <asm/mips-boards/generic.h> -#include <asm/mips-boards/prom.h> -#include <asm/mips-boards/simint.h> - - -unsigned long cpu_khz; - -/* - * Estimate CPU frequency. Sets mips_hpt_frequency as a side-effect - */ -static unsigned int __init estimate_cpu_frequency(void) -{ - unsigned int prid = read_c0_prid() & 0xffff00; - unsigned int count; - -#if 1 - /* - * hardwire the board frequency to 12MHz. - */ - - if ((prid == (PRID_COMP_MIPS | PRID_IMP_20KC)) || - (prid == (PRID_COMP_MIPS | PRID_IMP_25KF))) - count = 12000000; - else - count = 6000000; -#else - unsigned int flags; - - local_irq_save(flags); - - /* Start counter exactly on falling edge of update flag */ - while (CMOS_READ(RTC_REG_A) & RTC_UIP); - while (!(CMOS_READ(RTC_REG_A) & RTC_UIP)); - - /* Start r4k counter. */ - write_c0_count(0); - - /* Read counter exactly on falling edge of update flag */ - while (CMOS_READ(RTC_REG_A) & RTC_UIP); - while (!(CMOS_READ(RTC_REG_A) & RTC_UIP)); - - count = read_c0_count(); - - /* restore interrupts */ - local_irq_restore(flags); -#endif - - mips_hpt_frequency = count; - - if ((prid != (PRID_COMP_MIPS | PRID_IMP_20KC)) && - (prid != (PRID_COMP_MIPS | PRID_IMP_25KF))) - count *= 2; - - count += 5000; /* round */ - count -= count%10000; - - return count; -} - -static int mips_cpu_timer_irq; - -static void mips_timer_dispatch(void) -{ - do_IRQ(mips_cpu_timer_irq); -} - - -unsigned __cpuinit get_c0_compare_int(void) -{ -#ifdef MSC01E_INT_BASE - if (cpu_has_veic) { - set_vi_handler(MSC01E_INT_CPUCTR, mips_timer_dispatch); - mips_cpu_timer_irq = MSC01E_INT_BASE + MSC01E_INT_CPUCTR; - - return mips_cpu_timer_irq; - } -#endif - if (cpu_has_vint) - set_vi_handler(cp0_compare_irq, mips_timer_dispatch); - mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq; - - return mips_cpu_timer_irq; -} - -void __init plat_time_init(void) -{ - unsigned int est_freq; - - /* Set Data mode - binary. */ - CMOS_WRITE(CMOS_READ(RTC_CONTROL) | RTC_DM_BINARY, RTC_CONTROL); - - est_freq = estimate_cpu_frequency(); - - printk(KERN_INFO "CPU frequency %d.%02d MHz\n", est_freq / 1000000, - (est_freq % 1000000) * 100 / 1000000); - - cpu_khz = est_freq / 1000; -} |