42 files changed, 110 insertions, 199 deletions

diff --git a/arch/mips/au1000/common/setup.c b/arch/mips/au1000/common/setup.c
index a95b37773196..b212c0726125 100644
--- a/arch/mips/au1000/common/setup.c
+++ b/arch/mips/au1000/common/setup.c
@@ -50,7 +50,6 @@ extern void au1000_halt(void);
 extern void au1000_power_off(void);
 extern void au1x_time_init(void);
 extern void au1x_timer_setup(struct irqaction *irq);
-extern void au1xxx_time_init(void);
 extern void set_cpuspec(void);
 
 void __init plat_mem_setup(void)
@@ -112,7 +111,6 @@ void __init plat_mem_setup(void)
         _machine_restart = au1000_restart;
         _machine_halt = au1000_halt;
         pm_power_off = au1000_power_off;
-        board_time_init = au1xxx_time_init;
 
         /* IO/MEM resources. */
         set_io_port_base(0);
diff --git a/arch/mips/au1000/common/time.c b/arch/mips/au1000/common/time.c
index 8fc29982d700..fb1fd50f19a6 100644
--- a/arch/mips/au1000/common/time.c
+++ b/arch/mips/au1000/common/time.c
@@ -329,7 +329,3 @@ void __init plat_timer_setup(struct irqaction *irq)
 
 #endif
 }
-
-void __init au1xxx_time_init(void)
-{
-}
diff --git a/arch/mips/basler/excite/excite_setup.c b/arch/mips/basler/excite/excite_setup.c
index 56003188f17c..68be19d1802e 100644
--- a/arch/mips/basler/excite/excite_setup.c
+++ b/arch/mips/basler/excite/excite_setup.c
@@ -68,7 +68,7 @@ DEFINE_SPINLOCK(titan_lock);
 int titan_irqflags;
 
 
-static void excite_timer_init(void)
+void __init plat_time_init(void)
 {
         const u32 modebit5 = ocd_readl(0x00e4);
         unsigned int
@@ -261,9 +261,6 @@ void __init plat_mem_setup(void)
         /* Announce RAM to system */
         add_memory_region(0x00000000, memsize, BOOT_MEM_RAM);
 
-        /* Set up timer initialization hooks */
-        board_time_init = excite_timer_init;
-
         /* Set up the peripheral address map */
         *(boot_ocd_base + (LKB9 / sizeof (u32))) = 0;
         *(boot_ocd_base + (LKB10 / sizeof (u32))) = 0;
diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
index f48aa5aa9bf0..1b6b0fa5028f 100644
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -119,6 +119,5 @@ void __init plat_mem_setup(void)
         _machine_restart = bcm47xx_machine_restart;
         _machine_halt = bcm47xx_machine_halt;
         pm_power_off = bcm47xx_machine_halt;
-        board_time_init = bcm47xx_time_init;
 }
 
diff --git a/arch/mips/bcm47xx/time.c b/arch/mips/bcm47xx/time.c
index b27d07f29059..0ab4676c8bd3 100644
--- a/arch/mips/bcm47xx/time.c
+++ b/arch/mips/bcm47xx/time.c
@@ -28,8 +28,7 @@
 #include <asm/time.h>
 #include <bcm47xx.h>
 
-void __init
-bcm47xx_time_init(void)
+void __init plat_time_init(void)
 {
         unsigned long hz;
 
diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c
index 3e634f2f5443..bd5431e1f408 100644
--- a/arch/mips/dec/setup.c
+++ b/arch/mips/dec/setup.c
@@ -145,13 +145,9 @@ static void __init dec_be_init(void)
         }
 }
 
-
-extern void dec_time_init(void);
-
 void __init plat_mem_setup(void)
 {
         board_be_init = dec_be_init;
-        board_time_init = dec_time_init;
 
         wbflush_setup();
 
diff --git a/arch/mips/dec/time.c b/arch/mips/dec/time.c
index e2973a432b92..820e5331205f 100644
--- a/arch/mips/dec/time.c
+++ b/arch/mips/dec/time.c
@@ -35,7 +35,7 @@
 #include <asm/dec/ioasic_addrs.h>
 #include <asm/dec/machtype.h>
 
-static unsigned long dec_rtc_get_time(void)
+unsigned long read_persistent_clock(void)
 {
         unsigned int year, mon, day, hour, min, sec, real_year;
         unsigned long flags;
@@ -74,13 +74,13 @@ static unsigned long dec_rtc_get_time(void)
 }
 
 /*
- * In order to set the CMOS clock precisely, dec_rtc_set_mmss has to
+ * In order to set the CMOS clock precisely, rtc_mips_set_mmss has to
  * be called 500 ms after the second nowtime has started, because when
  * nowtime is written into the registers of the CMOS clock, it will
  * jump to the next second precisely 500 ms later.  Check the Dallas
  * DS1287 data sheet for details.
  */
-static int dec_rtc_set_mmss(unsigned long nowtime)
+int rtc_mips_set_mmss(unsigned long nowtime)
 {
         int retval = 0;
         int real_seconds, real_minutes, cmos_minutes;
@@ -139,7 +139,6 @@ static int dec_rtc_set_mmss(unsigned long nowtime)
         return retval;
 }
 
-
 static int dec_timer_state(void)
 {
         return (CMOS_READ(RTC_REG_C) & RTC_PF) != 0;
@@ -160,11 +159,8 @@ static cycle_t dec_ioasic_hpt_read(void)
 }
 
 
-void __init dec_time_init(void)
+void __init plat_time_init(void)
 {
-        rtc_mips_get_time = dec_rtc_get_time;
-        rtc_mips_set_mmss = dec_rtc_set_mmss;
-
         mips_timer_state = dec_timer_state;
         mips_timer_ack = dec_timer_ack;
 
diff --git a/arch/mips/emma2rh/markeins/setup.c b/arch/mips/emma2rh/markeins/setup.c
index 2f060e1ed36c..5e1da53b04a7 100644
--- a/arch/mips/emma2rh/markeins/setup.c
+++ b/arch/mips/emma2rh/markeins/setup.c
@@ -88,7 +88,7 @@ static unsigned int __init detect_bus_frequency(unsigned long rtc_base)
         return clock[reg];
 }
 
-static void __init emma2rh_time_init(void)
+void __init plat_time_init(void)
 {
         u32 reg;
         if (bus_frequency == 0)
@@ -124,8 +124,6 @@ void __init plat_mem_setup(void)
 
         set_io_port_base(KSEG1ADDR(EMMA2RH_PCI_IO_BASE));
 
-        board_time_init = emma2rh_time_init;
-
         _machine_restart = markeins_machine_restart;
         _machine_halt = markeins_machine_halt;
         pm_power_off = markeins_machine_power_off;
diff --git a/arch/mips/gt64120/wrppmc/setup.c b/arch/mips/gt64120/wrppmc/setup.c
index 238b5087fbb3..f2ccf101e6d9 100644
--- a/arch/mips/gt64120/wrppmc/setup.c
+++ b/arch/mips/gt64120/wrppmc/setup.c
@@ -126,7 +126,6 @@ static void wrppmc_setup_serial(void)
 
 void __init plat_mem_setup(void)
 {
-        extern void wrppmc_time_init(void);
         extern void wrppmc_machine_restart(char *command);
         extern void wrppmc_machine_halt(void);
         extern void wrppmc_machine_power_off(void);
@@ -135,9 +134,6 @@ void __init plat_mem_setup(void)
         _machine_halt    = wrppmc_machine_halt;
         pm_power_off     = wrppmc_machine_power_off;
 
-        /* Use MIPS Count/Compare Timer */
-        board_time_init   = wrppmc_time_init;
-
         /* This makes the operations of 'in/out[bwl]' to the
          * physical address ( < KSEG0) can work via KSEG1
          */
diff --git a/arch/mips/gt64120/wrppmc/time.c b/arch/mips/gt64120/wrppmc/time.c
index 5b440859bcee..faf164e7e0df 100644
--- a/arch/mips/gt64120/wrppmc/time.c
+++ b/arch/mips/gt64120/wrppmc/time.c
@@ -38,7 +38,7 @@ void __init plat_timer_setup(struct irqaction *irq)
  * NOTE: We disable all GT64120 timers, and use MIPS processor internal
  * timer as the source of kernel clock tick.
  */
-void __init wrppmc_time_init(void)
+void __init plat_time_init(void)
 {
         /* Disable GT64120 timers */
         GT_WRITE(GT_TC_CONTROL_OFS, 0x00);
diff --git a/arch/mips/jmr3927/rbhma3100/setup.c b/arch/mips/jmr3927/rbhma3100/setup.c
index fde56e86c2ab..7f14f70a1b88 100644
--- a/arch/mips/jmr3927/rbhma3100/setup.c
+++ b/arch/mips/jmr3927/rbhma3100/setup.c
@@ -109,7 +109,7 @@ static void jmr3927_timer_ack(void)
         jmr3927_tmrptr->tisr = 0;       /* ack interrupt */
 }
 
-static void __init jmr3927_time_init(void)
+void __init plat_time_init(void)
 {
         clocksource_mips.read = jmr3927_hpt_read;
         mips_timer_ack = jmr3927_timer_ack;
@@ -141,8 +141,6 @@ void __init plat_mem_setup(void)
 
         set_io_port_base(JMR3927_PORT_BASE + JMR3927_PCIIO);
 
-        board_time_init = jmr3927_time_init;
-
         _machine_restart = jmr3927_machine_restart;
         _machine_halt = jmr3927_machine_halt;
         pm_power_off = jmr3927_machine_power_off;
diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index 628a8ba6da57..9bbbd9b327fc 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -49,24 +49,19 @@
  * forward reference
  */
 DEFINE_SPINLOCK(rtc_lock);
+EXPORT_SYMBOL(rtc_lock);
 
-/*
- * By default we provide the null RTC ops
- */
-static unsigned long null_rtc_get_time(void)
+int __weak rtc_mips_set_time(unsigned long sec)
 {
-        return mktime(2000, 1, 1, 0, 0, 0);
+        return 0;
 }
+EXPORT_SYMBOL(rtc_mips_set_time);
 
-static int null_rtc_set_time(unsigned long sec)
+int __weak rtc_mips_set_mmss(unsigned long nowtime)
 {
-        return 0;
+        return rtc_mips_set_time(nowtime);
 }
 
-unsigned long (*rtc_mips_get_time)(void) = null_rtc_get_time;
-int (*rtc_mips_set_time)(unsigned long) = null_rtc_set_time;
-int (*rtc_mips_set_mmss)(unsigned long);
-
 int update_persistent_clock(struct timespec now)
 {
         return rtc_mips_set_mmss(now.tv_sec);
@@ -247,21 +242,18 @@ asmlinkage void ll_local_timer_interrupt(int irq)
 /*
  * time_init() - it does the following things.
  *
- * 1) board_time_init() -
+ * 1) plat_time_init() -
  *      a) (optional) set up RTC routines,
  *      b) (optional) calibrate and set the mips_hpt_frequency
  *          (only needed if you intended to use cpu counter as timer interrupt
  *           source)
- * 2) setup xtime based on rtc_mips_get_time().
- * 3) calculate a couple of cached variables for later usage
- * 4) plat_timer_setup() -
+ * 2) calculate a couple of cached variables for later usage
+ * 3) plat_timer_setup() -
  *      a) (optional) over-write any choices made above by time_init().
  *      b) machine specific code should setup the timer irqaction.
  *      c) enable the timer interrupt
  */
 
-void (*board_time_init)(void);
-
 unsigned int mips_hpt_frequency;
 
 static struct irqaction timer_irqaction = {
@@ -341,19 +333,13 @@ static void __init init_mips_clocksource(void)
         clocksource_register(&clocksource_mips);
 }
 
-void __init time_init(void)
+void __init __weak plat_time_init(void)
 {
-        if (board_time_init)
-                board_time_init();
-
-        if (!rtc_mips_set_mmss)
-                rtc_mips_set_mmss = rtc_mips_set_time;
-
-        xtime.tv_sec = rtc_mips_get_time();
-        xtime.tv_nsec = 0;
+}
 
-        set_normalized_timespec(&wall_to_monotonic,
-                                -xtime.tv_sec, -xtime.tv_nsec);
+void __init time_init(void)
+{
+        plat_time_init();
 
         /* Choose appropriate high precision timer routines.  */
         if (!cpu_has_counter && !clocksource_mips.read)
@@ -459,7 +445,4 @@ void to_tm(unsigned long tim, struct rtc_time *tm)
         tm->tm_wday = (gday + 4) % 7;   /* 1970/1/1 was Thursday */
 }
 
-EXPORT_SYMBOL(rtc_lock);
 EXPORT_SYMBOL(to_tm);
-EXPORT_SYMBOL(rtc_mips_set_time);
-EXPORT_SYMBOL(rtc_mips_get_time);
diff --git a/arch/mips/lasat/ds1603.c b/arch/mips/lasat/ds1603.c
index 0b315f51d62c..52cb1436a12a 100644
--- a/arch/mips/lasat/ds1603.c
+++ b/arch/mips/lasat/ds1603.c
@@ -135,8 +135,7 @@ static void rtc_end_op(void)
         lasat_ndelay(1000);
 }
 
-/* interface */
-unsigned long ds1603_read(void)
+unsigned long read_persistent_clock(void)
 {
         unsigned long word;
         unsigned long flags;
@@ -147,10 +146,11 @@ unsigned long ds1603_read(void)
         word = rtc_read_word();
         rtc_end_op();
         spin_unlock_irqrestore(&rtc_lock, flags);
+
         return word;
 }
 
-int ds1603_set(unsigned long time)
+int rtc_mips_set_mmss(unsigned long time)
 {
         unsigned long flags;
 
diff --git a/arch/mips/lasat/ds1603.h b/arch/mips/lasat/ds1603.h
index c2e5c76a379d..2da3704044fd 100644
--- a/arch/mips/lasat/ds1603.h
+++ b/arch/mips/lasat/ds1603.h
@@ -20,8 +20,6 @@ struct ds_defs {
 
 extern struct ds_defs *ds1603;
 
-unsigned long ds1603_read(void);
-int ds1603_set(unsigned long);
 void ds1603_set_trimmer(unsigned int);
 void ds1603_enable(void);
 void ds1603_disable(void);
diff --git a/arch/mips/lasat/setup.c b/arch/mips/lasat/setup.c
index 187e37821d93..54827d0174bf 100644
--- a/arch/mips/lasat/setup.c
+++ b/arch/mips/lasat/setup.c
@@ -117,7 +117,7 @@ static struct notifier_block lasat_panic_block[] =
         }
 };
 
-static void lasat_time_init(void)
+void plat_time_init(void)
 {
         mips_hpt_frequency = lasat_board_info.li_cpu_hz / 2;
 }
@@ -142,12 +142,8 @@ void __init plat_mem_setup(void)
 
         lasat_reboot_setup();
 
-        board_time_init = lasat_time_init;
-
 #ifdef CONFIG_DS1603
         ds1603 = &ds_defs[mips_machtype];
-        rtc_mips_get_time = ds1603_read;
-        rtc_mips_set_time = ds1603_set;
 #endif
 
 #ifdef DYNAMIC_SERIAL_INIT
diff --git a/arch/mips/lasat/sysctl.c b/arch/mips/lasat/sysctl.c
index 4575a829766d..389336c4ecc5 100644
--- a/arch/mips/lasat/sysctl.c
+++ b/arch/mips/lasat/sysctl.c
@@ -32,6 +32,8 @@
 #include <linux/mutex.h>
 #include <linux/uaccess.h>
 
+#include <asm/time.h>
+
 #include "sysctl.h"
 #include "ds1603.h"
 
@@ -106,7 +108,7 @@ int proc_dolasatrtc(ctl_table *table, int write, struct file *filp,
 
         mutex_lock(&lasat_info_mutex);
         if (!write) {
-                rtctmp = ds1603_read();
+                rtctmp = read_persistent_clock();
                 /* check for time < 0 and set to 0 */
                 if (rtctmp < 0)
                         rtctmp = 0;
@@ -116,7 +118,7 @@ int proc_dolasatrtc(ctl_table *table, int write, struct file *filp,
                 mutex_unlock(&lasat_info_mutex);
                 return r;
         }
-        ds1603_set(rtctmp);
+        rtc_mips_set_mmss(rtctmp);
         mutex_unlock(&lasat_info_mutex);
 
         return 0;
@@ -152,7 +154,7 @@ int sysctl_lasat_rtc(ctl_table *table, int *name, int nlen,
         int r;
 
         mutex_lock(&lasat_info_mutex);
-        rtctmp = ds1603_read();
+        rtctmp = read_persistent_clock();
         if (rtctmp < 0)
                 rtctmp = 0;
         r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen);
@@ -161,7 +163,7 @@ int sysctl_lasat_rtc(ctl_table *table, int *name, int nlen,
                 return r;
         }
         if (newval && newlen)
-                ds1603_set(rtctmp);
+                rtc_mips_set_mmss(rtctmp);
         mutex_unlock(&lasat_info_mutex);
 
         return 1;
diff --git a/arch/mips/lemote/lm2e/setup.c b/arch/mips/lemote/lm2e/setup.c
index f34350a4f271..09314a20f9fb 100644
--- a/arch/mips/lemote/lm2e/setup.c
+++ b/arch/mips/lemote/lm2e/setup.c
@@ -58,13 +58,13 @@ void __init plat_timer_setup(struct irqaction *irq)
         setup_irq(MIPS_CPU_IRQ_BASE + 7, irq);
 }
 
-static void __init loongson2e_time_init(void)
+void __init plat_time_init(void)
 {
         /* setup mips r4k timer */
         mips_hpt_frequency = cpu_clock_freq / 2;
 }
 
-static unsigned long __init mips_rtc_get_time(void)
+unsigned long read_persistent_clock(void)
 {
         return mc146818_get_cmos_time();
 }
@@ -89,9 +89,6 @@ void __init plat_mem_setup(void)
 
         mips_reboot_setup();
 
-        board_time_init = loongson2e_time_init;
-        rtc_mips_get_time = mips_rtc_get_time;
-
         __wbflush = wbflush_loongson2e;
 
         add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
diff --git a/arch/mips/mips-boards/atlas/atlas_setup.c b/arch/mips/mips-boards/atlas/atlas_setup.c
index c68358a476dd..86bfc0548164 100644
--- a/arch/mips/mips-boards/atlas/atlas_setup.c
+++ b/arch/mips/mips-boards/atlas/atlas_setup.c
@@ -35,8 +35,6 @@
 #include <asm/traps.h>
 
 extern void mips_reboot_setup(void);
-extern void mips_time_init(void);
-extern unsigned long mips_rtc_get_time(void);
 
 #ifdef CONFIG_KGDB
 extern void kgdb_config(void);
@@ -63,9 +61,6 @@ void __init plat_mem_setup(void)
         kgdb_config();
 #endif
         mips_reboot_setup();
-
-        board_time_init = mips_time_init;
-        rtc_mips_get_time = mips_rtc_get_time;
 }
 
 static void __init serial_init(void)
diff --git a/arch/mips/mips-boards/generic/time.c b/arch/mips/mips-boards/generic/time.c
index d7bff9ca5356..075f9d46f40e 100644
--- a/arch/mips/mips-boards/generic/time.c
+++ b/arch/mips/mips-boards/generic/time.c
@@ -224,12 +224,12 @@ static unsigned int __init estimate_cpu_frequency(void)
         return count;
 }
 
-unsigned long __init mips_rtc_get_time(void)
+unsigned long read_persistent_clock(void)
 {
         return mc146818_get_cmos_time();
 }
 
-void __init mips_time_init(void)
+void __init plat_time_init(void)
 {
         unsigned int est_freq;
 
diff --git a/arch/mips/mips-boards/malta/malta_setup.c b/arch/mips/mips-boards/malta/malta_setup.c
index 8f1b78dfd89f..a5a5a43a1984 100644
--- a/arch/mips/mips-boards/malta/malta_setup.c
+++ b/arch/mips/mips-boards/malta/malta_setup.c
@@ -36,7 +36,6 @@
 #endif
 
 extern void mips_reboot_setup(void);
-extern void mips_time_init(void);
 extern unsigned long mips_rtc_get_time(void);
 
 #ifdef CONFIG_KGDB
@@ -185,7 +184,4 @@ void __init plat_mem_setup(void)
 #endif
 #endif
         mips_reboot_setup();
-
-        board_time_init = mips_time_init;
-        rtc_mips_get_time = mips_rtc_get_time;
 }
diff --git a/arch/mips/mips-boards/sead/sead_setup.c b/arch/mips/mips-boards/sead/sead_setup.c
index 5f70eaf01fab..fad58972f3ac 100644
--- a/arch/mips/mips-boards/sead/sead_setup.c
+++ b/arch/mips/mips-boards/sead/sead_setup.c
@@ -35,7 +35,6 @@
 #include <asm/time.h>
 
 extern void mips_reboot_setup(void);
-extern void mips_time_init(void);
 
 static void __init serial_init(void);
 
@@ -52,8 +51,6 @@ void __init plat_mem_setup(void)
 
         serial_init ();
 
-        board_time_init = mips_time_init;
-
         mips_reboot_setup();
 }
 
diff --git a/arch/mips/mipssim/sim_setup.c b/arch/mips/mipssim/sim_setup.c
index d012719c4d24..452c129d02c1 100644
--- a/arch/mips/mipssim/sim_setup.c
+++ b/arch/mips/mipssim/sim_setup.c
@@ -36,7 +36,6 @@
 #include <asm/mips-boards/simint.h>
 
 
-extern void sim_time_init(void);
 static void __init serial_init(void);
 unsigned int _isbonito = 0;
 
@@ -54,7 +53,6 @@ void __init plat_mem_setup(void)
 
         serial_init();
 
-        board_time_init = sim_time_init;
         pr_info("Linux started...\n");
 
 #ifdef CONFIG_MIPS_MT_SMP
diff --git a/arch/mips/mipssim/sim_time.c b/arch/mips/mipssim/sim_time.c
index a0f5a5dca1b2..9a355e77952f 100644
--- a/arch/mips/mipssim/sim_time.c
+++ b/arch/mips/mipssim/sim_time.c
@@ -146,7 +146,7 @@ static unsigned int __init estimate_cpu_frequency(void)
         return count;
 }
 
-void __init sim_time_init(void)
+void __init plat_time_init(void)
 {
         unsigned int est_freq, flags;
 
diff --git a/arch/mips/philips/pnx8550/common/setup.c b/arch/mips/philips/pnx8550/common/setup.c
index 5bd737477685..2ce298f4d19a 100644
--- a/arch/mips/philips/pnx8550/common/setup.c
+++ b/arch/mips/philips/pnx8550/common/setup.c
@@ -47,7 +47,6 @@ extern void pnx8550_machine_halt(void);
 extern void pnx8550_machine_power_off(void);
 extern struct resource ioport_resource;
 extern struct resource iomem_resource;
-extern void pnx8550_time_init(void);
 extern void rs_kgdb_hook(int tty_no);
 extern char *prom_getcmdline(void);
 
@@ -104,8 +103,6 @@ void __init plat_mem_setup(void)
         _machine_halt = pnx8550_machine_halt;
         pm_power_off = pnx8550_machine_power_off;
 
-        board_time_init = pnx8550_time_init;
-
         /* Clear the Global 2 Register, PCI Inta Output Enable Registers
            Bit 1:Enable DAC Powerdown
           -> 0:DACs are enabled and are working normally
diff --git a/arch/mips/philips/pnx8550/common/time.c b/arch/mips/philips/pnx8550/common/time.c
index 68def3880a1c..e818fd0f1584 100644
--- a/arch/mips/philips/pnx8550/common/time.c
+++ b/arch/mips/philips/pnx8550/common/time.c
@@ -1,6 +1,7 @@
 /*
  * Copyright 2001, 2002, 2003 MontaVista Software Inc.
  * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
+ * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
  *
  * Common time service routines for MIPS machines. See
  * Documents/MIPS/README.txt.
@@ -46,16 +47,16 @@ static void timer_ack(void)
 }
 
 /*
- * pnx8550_time_init() - it does the following things:
+ * plat_time_init() - it does the following things:
  *
- * 1) board_time_init() -
+ * 1) plat_time_init() -
  *      a) (optional) set up RTC routines,
  *      b) (optional) calibrate and set the mips_hpt_frequency
  *          (only needed if you intended to use cpu counter as timer interrupt
  *           source)
  */
 
-void pnx8550_time_init(void)
+__init void plat_time_init(void)
 {
         unsigned int             n;
         unsigned int             m;
diff --git a/arch/mips/pmc-sierra/msp71xx/msp_setup.c b/arch/mips/pmc-sierra/msp71xx/msp_setup.c
index e4cc54824475..c93675615f5d 100644
--- a/arch/mips/pmc-sierra/msp71xx/msp_setup.c
+++ b/arch/mips/pmc-sierra/msp71xx/msp_setup.c
@@ -25,7 +25,6 @@
 #define MSP_BOARD_RESET_GPIO    9
 #endif
 
-extern void msp_timer_init(void);
 extern void msp_serial_setup(void);
 extern void pmctwiled_setup(void);
 
@@ -149,8 +148,6 @@ void __init plat_mem_setup(void)
         _machine_restart = msp_restart;
         _machine_halt = msp_halt;
         pm_power_off = msp_power_off;
-
-        board_time_init = msp_timer_init;
 }
 
 void __init prom_init(void)
diff --git a/arch/mips/pmc-sierra/msp71xx/msp_time.c b/arch/mips/pmc-sierra/msp71xx/msp_time.c
index 2a2beac5a4f8..f221d4763625 100644
--- a/arch/mips/pmc-sierra/msp71xx/msp_time.c
+++ b/arch/mips/pmc-sierra/msp71xx/msp_time.c
@@ -36,7 +36,7 @@
 #include <msp_int.h>
 #include <msp_regs.h>
 
-void __init msp_timer_init(void)
+void __init plat_time_init(void)
 {
         char    *endp, *s;
         unsigned long cpu_rate = 0;
@@ -81,7 +81,6 @@ void __init msp_timer_init(void)
         mips_hpt_frequency = cpu_rate/2;
 }
 
-
 void __init plat_timer_setup(struct irqaction *irq)
 {
 #ifdef CONFIG_IRQ_MSP_CIC
diff --git a/arch/mips/pmc-sierra/yosemite/setup.c b/arch/mips/pmc-sierra/yosemite/setup.c
index 58862c8d1d00..56bf69595da8 100644
--- a/arch/mips/pmc-sierra/yosemite/setup.c
+++ b/arch/mips/pmc-sierra/yosemite/setup.c
@@ -70,7 +70,7 @@ void __init bus_error_init(void)
 }
 
 
-unsigned long m48t37y_get_time(void)
+unsigned long read_persistent_clock(void)
 {
         unsigned int year, month, day, hour, min, sec;
         unsigned long flags;
@@ -95,7 +95,7 @@ unsigned long m48t37y_get_time(void)
         return mktime(year, month, day, hour, min, sec);
 }
 
-int m48t37y_set_time(unsigned long sec)
+int rtc_mips_set_time(unsigned long tim)
 {
         struct rtc_time tm;
         unsigned long flags;
@@ -138,7 +138,7 @@ void __init plat_timer_setup(struct irqaction *irq)
         setup_irq(7, irq);
 }
 
-void yosemite_time_init(void)
+void __init plat_time_init(void)
 {
         mips_hpt_frequency = cpu_clock_freq / 2;
 mips_hpt_frequency = 33000000 * 3 * 5;
@@ -198,17 +198,6 @@ static void __init py_rtc_setup(void)
         m48t37_base = ioremap(YOSEMITE_RTC_BASE, YOSEMITE_RTC_SIZE);
         if (!m48t37_base)
                 printk(KERN_ERR "Mapping the RTC failed\n");
-
-        rtc_mips_get_time = m48t37y_get_time;
-        rtc_mips_set_time = m48t37y_set_time;
-
-        write_seqlock(&xtime_lock);
-        xtime.tv_sec = m48t37y_get_time();
-        xtime.tv_nsec = 0;
-
-        set_normalized_timespec(&wall_to_monotonic,
-                                -xtime.tv_sec, -xtime.tv_nsec);
-        write_sequnlock(&xtime_lock);
 }
 
 /* Not only time init but that's what the hook it's called through is named */
@@ -221,7 +210,6 @@ static void __init py_late_time_init(void)
 
 void __init plat_mem_setup(void)
 {
-        board_time_init = yosemite_time_init;
         late_time_init = py_late_time_init;
 
         /* Add memory regions */
diff --git a/arch/mips/sgi-ip22/ip22-setup.c b/arch/mips/sgi-ip22/ip22-setup.c
index e7ce7982db72..174f09e42f6b 100644
--- a/arch/mips/sgi-ip22/ip22-setup.c
+++ b/arch/mips/sgi-ip22/ip22-setup.c
@@ -51,7 +51,6 @@ void ip22_do_break(void)
 EXPORT_SYMBOL(ip22_do_break);
 
 extern void ip22_be_init(void) __init;
-extern void ip22_time_init(void) __init;
 
 void __init plat_mem_setup(void)
 {
@@ -59,7 +58,6 @@ void __init plat_mem_setup(void)
         char *cserial;
 
         board_be_init = ip22_be_init;
-        ip22_time_init();
 
         /* Init the INDY HPC I/O controller.  Need to call this before
          * fucking with the memory controller because it needs to know the
diff --git a/arch/mips/sgi-ip22/ip22-time.c b/arch/mips/sgi-ip22/ip22-time.c
index de3d01823ad5..0387c385b4b2 100644
--- a/arch/mips/sgi-ip22/ip22-time.c
+++ b/arch/mips/sgi-ip22/ip22-time.c
@@ -32,7 +32,7 @@
  * note that mktime uses month from 1 to 12 while to_tm
  * uses 0 to 11.
  */
-static unsigned long indy_rtc_get_time(void)
+unsigned long read_persistent_clock(void)
 {
         unsigned int yrs, mon, day, hrs, min, sec;
         unsigned int save_control;
@@ -60,7 +60,7 @@ static unsigned long indy_rtc_get_time(void)
         return mktime(yrs + 1900, mon, day, hrs, min, sec);
 }
 
-static int indy_rtc_set_time(unsigned long tim)
+int rtc_mips_set_time(unsigned long tim)
 {
         struct rtc_time tm;
         unsigned int save_control;
@@ -128,7 +128,7 @@ static unsigned long dosample(void)
 /*
  * Here we need to calibrate the cycle counter to at least be close.
  */
-static __init void indy_time_init(void)
+__init void plat_time_init(void)
 {
         unsigned long r4k_ticks[3];
         unsigned long r4k_tick;
@@ -207,12 +207,3 @@ void __init plat_timer_setup(struct irqaction *irq)
         /* setup irqaction */
         setup_irq(SGI_TIMER_IRQ, irq);
 }
-
-void __init ip22_time_init(void)
-{
-        /* setup hookup functions */
-        rtc_mips_get_time = indy_rtc_get_time;
-        rtc_mips_set_time = indy_rtc_set_time;
-
-        board_time_init = indy_time_init;
-}
diff --git a/arch/mips/sgi-ip27/ip27-init.c b/arch/mips/sgi-ip27/ip27-init.c
index af08c41d6aa8..681b593071cb 100644
--- a/arch/mips/sgi-ip27/ip27-init.c
+++ b/arch/mips/sgi-ip27/ip27-init.c
@@ -194,7 +194,6 @@ static inline void ioc3_eth_init(void)
         ioc3->eier = 0;
 }
 
-extern void ip27_time_init(void);
 extern void ip27_reboot_setup(void);
 
 void __init plat_mem_setup(void)
@@ -241,6 +240,4 @@ void __init plat_mem_setup(void)
         per_cpu_init();
 
         set_io_port_base(IO_BASE);
-
-        board_time_init = ip27_time_init;
 }
diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c
index 31346162e9fa..9c1700e85be0 100644
--- a/arch/mips/sgi-ip27/ip27-timer.c
+++ b/arch/mips/sgi-ip27/ip27-timer.c
@@ -123,7 +123,7 @@ again:
 #include <asm/sn/sn0/hubio.h>
 #include <asm/pci/bridge.h>
 
-static __init unsigned long get_m48t35_time(void)
+unsigned long read_persistent_clock(void)
 {
         unsigned int year, month, date, hour, min, sec;
         struct m48t35_rtc *rtc;
@@ -205,12 +205,10 @@ static cycle_t ip27_hpt_read(void)
         return REMOTE_HUB_L(cputonasid(0), PI_RT_COUNT);
 }
 
-void __init ip27_time_init(void)
+void __init plat_time_init(void)
 {
         clocksource_mips.read = ip27_hpt_read;
         mips_hpt_frequency = CYCLES_PER_SEC;
-        xtime.tv_sec = get_m48t35_time();
-        xtime.tv_nsec = 0;
 }
 
 void __init cpu_time_init(void)
diff --git a/arch/mips/sgi-ip32/ip32-setup.c b/arch/mips/sgi-ip32/ip32-setup.c
index bbba066cb405..4125a5ba119e 100644
--- a/arch/mips/sgi-ip32/ip32-setup.c
+++ b/arch/mips/sgi-ip32/ip32-setup.c
@@ -62,10 +62,15 @@ static inline void str2eaddr(unsigned char *ea, unsigned char *str)
 }
 #endif
 
+unsigned long read_persistent_clock(void)
+{
+        return mc146818_get_cmos_time();
+}
+
 /* An arbitrary time; this can be decreased if reliability looks good */
 #define WAIT_MS 10
 
-void __init ip32_time_init(void)
+void __init plat_time_init(void)
 {
         printk(KERN_INFO "Calibrating system timer... ");
         write_c0_count(0);
@@ -85,11 +90,6 @@ void __init plat_mem_setup(void)
 {
         board_be_init = ip32_be_init;
 
-        rtc_mips_get_time = mc146818_get_cmos_time;
-        rtc_mips_set_mmss = mc146818_set_rtc_mmss;
-
-        board_time_init = ip32_time_init;
-
 #ifdef CONFIG_SGI_O2MACE_ETH
         {
                 char *mac = ArcGetEnvironmentVariable("eaddr");
diff --git a/arch/mips/sibyte/swarm/setup.c b/arch/mips/sibyte/swarm/setup.c
index 83572d8f3e14..8b3ef0e4cd55 100644
--- a/arch/mips/sibyte/swarm/setup.c
+++ b/arch/mips/sibyte/swarm/setup.c
@@ -69,7 +69,7 @@ const char *get_system_type(void)
         return "SiByte " SIBYTE_BOARD_NAME;
 }
 
-void __init swarm_time_init(void)
+void __init plat_time_init(void)
 {
 #if defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
         /* Setup HPT */
@@ -104,6 +104,44 @@ int swarm_be_handler(struct pt_regs *regs, int is_fixup)
         return (is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL);
 }
 
+enum swarm_rtc_type {
+        RTC_NONE,
+        RTC_XICOR,
+        RTC_M4LT81
+};
+
+enum swarm_rtc_type swarm_rtc_type;
+
+unsigned long read_persistent_clock(void)
+{
+        switch (swarm_rtc_type) {
+        case RTC_XICOR:
+                return xicor_get_time();
+
+        case RTC_M4LT81:
+                return m41t81_get_time();
+
+        case RTC_NONE:
+        default:
+                return mktime(2000, 1, 1, 0, 0, 0);
+        }
+}
+
+int rtc_mips_set_time(unsigned long sec)
+{
+        switch (swarm_rtc_type) {
+        case RTC_XICOR:
+                return xicor_set_time(sec);
+
+        case RTC_M4LT81:
+                return m41t81_set_time(sec);
+
+        case RTC_NONE:
+        default:
+                return -1;
+        }
+}
+
 void __init plat_mem_setup(void)
 {
 #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
@@ -116,20 +154,12 @@ void __init plat_mem_setup(void)
 
         panic_timeout = 5;  /* For debug.  */
 
-        board_time_init = swarm_time_init;
         board_be_handler = swarm_be_handler;
 
-        if (xicor_probe()) {
-                printk("swarm setup: Xicor 1241 RTC detected.\n");
-                rtc_mips_get_time = xicor_get_time;
-                rtc_mips_set_time = xicor_set_time;
-        }
-
-        if (m41t81_probe()) {
-                printk("swarm setup: M41T81 RTC detected.\n");
-                rtc_mips_get_time = m41t81_get_time;
-                rtc_mips_set_time = m41t81_set_time;
-        }
+        if (xicor_probe())
+                swarm_rtc_type = RTC_XICOR;
+        if (m41t81_probe())
+                swarm_rtc_type = RTC_M4LT81;
 
         printk("This kernel optimized for "
 #ifdef CONFIG_SIMULATION
diff --git a/arch/mips/sni/pcimt.c b/arch/mips/sni/pcimt.c
index 44b1ae62aa4a..25cf646329ae 100644
--- a/arch/mips/sni/pcimt.c
+++ b/arch/mips/sni/pcimt.c
@@ -313,7 +313,6 @@ void __init sni_pcimt_init(void)
 {
         sni_pcimt_detect();
         sni_pcimt_sc_init();
-        board_time_init = sni_cpu_time_init;
         ioport_resource.end = sni_io_resource.end;
 #ifdef CONFIG_PCI
         PCIBIOS_MIN_IO = 0x9000;
diff --git a/arch/mips/sni/pcit.c b/arch/mips/sni/pcit.c
index 2480c478dcbd..3361bdd240e6 100644
--- a/arch/mips/sni/pcit.c
+++ b/arch/mips/sni/pcit.c
@@ -263,7 +263,6 @@ void __init sni_pcit_cplus_irq_init(void)
 
 void __init sni_pcit_init(void)
 {
-        board_time_init = sni_cpu_time_init;
         ioport_resource.end = sni_io_resource.end;
 #ifdef CONFIG_PCI
         PCIBIOS_MIN_IO = 0x9000;
diff --git a/arch/mips/sni/rm200.c b/arch/mips/sni/rm200.c
index 28a11d8605ce..94f115c6b2e0 100644
--- a/arch/mips/sni/rm200.c
+++ b/arch/mips/sni/rm200.c
@@ -194,5 +194,4 @@ void __init sni_rm200_init(void)
 {
         set_io_port_base(SNI_PORT_BASE + 0x02000000);
         ioport_resource.end += 0x02000000;
-        board_time_init = sni_cpu_time_init;
 }
diff --git a/arch/mips/sni/time.c b/arch/mips/sni/time.c
index 20028fc7757e..92452d677d8f 100644
--- a/arch/mips/sni/time.c
+++ b/arch/mips/sni/time.c
@@ -4,6 +4,7 @@
 
 #include <asm/sni.h>
 #include <asm/time.h>
+#include <asm-generic/rtc.h>
 
 #define SNI_CLOCK_TICK_RATE     3686400
 #define SNI_COUNTER2_DIV        64
@@ -71,7 +72,7 @@ static __init unsigned long dosample(void)
 /*
  * Here we need to calibrate the cycle counter to at least be close.
  */
-__init void sni_cpu_time_init(void)
+void __init plat_time_init(void)
 {
         unsigned long r4k_ticks[3];
         unsigned long r4k_tick;
@@ -146,3 +147,8 @@ void __init plat_timer_setup(struct irqaction *irq)
                 break;
         }
 }
+
+unsigned long read_persistent_clock(void)
+{
+        return -1;
+}
diff --git a/arch/mips/tx4927/common/tx4927_setup.c b/arch/mips/tx4927/common/tx4927_setup.c
index b18ed58f88a9..8ce0989671d8 100644
--- a/arch/mips/tx4927/common/tx4927_setup.c
+++ b/arch/mips/tx4927/common/tx4927_setup.c
@@ -49,14 +49,11 @@
 
 #undef DEBUG
 
-void __init tx4927_time_init(void);
 void dump_cp0(char *key);
 
 
 void __init plat_mem_setup(void)
 {
-        board_time_init = tx4927_time_init;
-
 #ifdef CONFIG_TOSHIBA_RBTX4927
         {
                 extern void toshiba_rbtx4927_setup(void);
@@ -65,20 +62,16 @@ void __init plat_mem_setup(void)
 #endif
 }
 
-void __init tx4927_time_init(void)
+void __init plat_time_init(void)
 {
-
 #ifdef CONFIG_TOSHIBA_RBTX4927
         {
                 extern void toshiba_rbtx4927_time_init(void);
                 toshiba_rbtx4927_time_init();
         }
 #endif
-
-        return;
 }
 
-
 void __init plat_timer_setup(struct irqaction *irq)
 {
         setup_irq(TX4927_IRQ_CPU_TIMER, irq);
diff --git a/arch/mips/tx4938/common/setup.c b/arch/mips/tx4938/common/setup.c
index 142abf453e40..ab4082267553 100644
--- a/arch/mips/tx4938/common/setup.c
+++ b/arch/mips/tx4938/common/setup.c
@@ -34,25 +34,16 @@
 #include <asm/tx4938/rbtx4938.h>
 
 extern void toshiba_rbtx4938_setup(void);
-extern void rbtx4938_time_init(void);
 
 void __init tx4938_setup(void);
-void __init tx4938_time_init(void);
 void dump_cp0(char *key);
 
 void __init
 plat_mem_setup(void)
 {
-        board_time_init = tx4938_time_init;
         toshiba_rbtx4938_setup();
 }
 
-void __init
-tx4938_time_init(void)
-{
-        rbtx4938_time_init();
-}
-
 void __init plat_timer_setup(struct irqaction *irq)
 {
         setup_irq(TX4938_IRQ_CPU_TIMER, irq);
diff --git a/arch/mips/tx4938/toshiba_rbtx4938/setup.c b/arch/mips/tx4938/toshiba_rbtx4938/setup.c
index f236b1ff8923..304b406fcb9d 100644
--- a/arch/mips/tx4938/toshiba_rbtx4938/setup.c
+++ b/arch/mips/tx4938/toshiba_rbtx4938/setup.c
@@ -39,7 +39,6 @@
 #include <asm/tx4938/spi.h>
 #include <asm/gpio.h>
 
-extern void rbtx4938_time_init(void) __init;
 extern char * __init prom_getcmdline(void);
 static inline void tx4938_report_pcic_status1(struct tx4938_pcic_reg *pcicptr);
 
@@ -856,7 +855,7 @@ void tx4938_report_pcic_status(void)
 /* We use onchip r4k counter or TMR timer as our system wide timer
  * interrupt running at 100HZ. */
 
-void __init rbtx4938_time_init(void)
+void __init plat_time_init(void)
 {
         mips_hpt_frequency = txx9_cpu_clock / 2;
 }
diff --git a/arch/mips/vr41xx/common/init.c b/arch/mips/vr41xx/common/init.c
index 4f97e0ba9e24..407cec203b29 100644
--- a/arch/mips/vr41xx/common/init.c
+++ b/arch/mips/vr41xx/common/init.c
@@ -36,7 +36,7 @@ static void __init iomem_resource_init(void)
         iomem_resource.end = IO_MEM_RESOURCE_END;
 }
 
-static void __init setup_timer_frequency(void)
+void __init plat_time_init(void)
 {
         unsigned long tclock;
 
@@ -53,16 +53,10 @@ void __init plat_timer_setup(struct irqaction *irq)
         setup_irq(TIMER_IRQ, irq);
 }
 
-static void __init timer_init(void)
-{
-        board_time_init = setup_timer_frequency;
-}
-
 void __init plat_mem_setup(void)
 {
         vr41xx_calculate_clock_frequency();
 
-        timer_init();
         iomem_resource_init();
 }