Merge branch 'master' of /home/wd/git/u-boot/custodians

[oweals/u-boot.git] / cpu / sa1100 / interrupts.c

diff --git a/cpu/sa1100/interrupts.c b/cpu/sa1100/interrupts.c
index 75f939c2cf1d3671190ddfcffaf01bd5218cfddc..53f27456acc8c8e814062a8bdfd535dd90445536 100644 (file)
--- a/cpu/sa1100/interrupts.c
+++ b/cpu/sa1100/interrupts.c
@@ -29,145 +29,6 @@
 #include <common.h>
 #include <SA-1100.h>
 
-#include <asm/proc-armv/ptrace.h>
-
-extern void reset_cpu (ulong addr);
-
-#ifdef CONFIG_USE_IRQ
-/* enable IRQ/FIQ interrupts */
-void enable_interrupts (void)
-{
-       unsigned long temp;
-       __asm__ __volatile__ ("mrs %0, cpsr\n"
-                             "bic %0, %0, #0x80\n"
-                             "msr cpsr_c, %0"
-                             : "=r" (temp)
-                             :
-                             : "memory");
-}
-
-
-/*
- * disable IRQ/FIQ interrupts
- * returns true if interrupts had been enabled before we disabled them
- */
-int disable_interrupts (void)
-{
-       unsigned long old, temp;
-       __asm__ __volatile__ ("mrs %0, cpsr\n"
-                             "orr %1, %0, #0x80\n"
-                             "msr cpsr_c, %1"
-                             : "=r" (old), "=r" (temp)
-                             :
-                             : "memory");
-
-       return (old & 0x80) == 0;
-}
-#else
-void enable_interrupts (void)
-{
-       return;
-}
-int disable_interrupts (void)
-{
-       return 0;
-}
-#endif
-
-
-void bad_mode (void)
-{
-       panic ("Resetting CPU ...\n");
-       reset_cpu (0);
-}
-
-void show_regs (struct pt_regs *regs)
-{
-       unsigned long flags;
-       const char *processor_modes[] = {
-       "USER_26",      "FIQ_26",       "IRQ_26",       "SVC_26",
-       "UK4_26",       "UK5_26",       "UK6_26",       "UK7_26",
-       "UK8_26",       "UK9_26",       "UK10_26",      "UK11_26",
-       "UK12_26",      "UK13_26",      "UK14_26",      "UK15_26",
-       "USER_32",      "FIQ_32",       "IRQ_32",       "SVC_32",
-       "UK4_32",       "UK5_32",       "UK6_32",       "ABT_32",
-       "UK8_32",       "UK9_32",       "UK10_32",      "UND_32",
-       "UK12_32",      "UK13_32",      "UK14_32",      "SYS_32"
-       };
-
-       flags = condition_codes (regs);
-
-       printf ("pc : [<%08lx>]    lr : [<%08lx>]\n"
-               "sp : %08lx  ip : %08lx  fp : %08lx\n",
-               instruction_pointer (regs),
-               regs->ARM_lr, regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
-       printf ("r10: %08lx  r9 : %08lx  r8 : %08lx\n",
-               regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
-       printf ("r7 : %08lx  r6 : %08lx  r5 : %08lx  r4 : %08lx\n",
-               regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
-       printf ("r3 : %08lx  r2 : %08lx  r1 : %08lx  r0 : %08lx\n",
-               regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
-       printf ("Flags: %c%c%c%c",
-               flags & CC_N_BIT ? 'N' : 'n',
-               flags & CC_Z_BIT ? 'Z' : 'z',
-               flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
-       printf ("  IRQs %s  FIQs %s  Mode %s%s\n",
-               interrupts_enabled (regs) ? "on" : "off",
-               fast_interrupts_enabled (regs) ? "on" : "off",
-               processor_modes[processor_mode (regs)],
-               thumb_mode (regs) ? " (T)" : "");
-}
-
-void do_undefined_instruction (struct pt_regs *pt_regs)
-{
-       printf ("undefined instruction\n");
-       show_regs (pt_regs);
-       bad_mode ();
-}
-
-void do_software_interrupt (struct pt_regs *pt_regs)
-{
-       printf ("software interrupt\n");
-       show_regs (pt_regs);
-       bad_mode ();
-}
-
-void do_prefetch_abort (struct pt_regs *pt_regs)
-{
-       printf ("prefetch abort\n");
-       show_regs (pt_regs);
-       bad_mode ();
-}
-
-void do_data_abort (struct pt_regs *pt_regs)
-{
-       printf ("data abort\n");
-       show_regs (pt_regs);
-       bad_mode ();
-}
-
-void do_not_used (struct pt_regs *pt_regs)
-{
-       printf ("not used\n");
-       show_regs (pt_regs);
-       bad_mode ();
-}
-
-void do_fiq (struct pt_regs *pt_regs)
-{
-       printf ("fast interrupt request\n");
-       show_regs (pt_regs);
-       bad_mode ();
-}
-
-void do_irq (struct pt_regs *pt_regs)
-{
-       printf ("interrupt request\n");
-       show_regs (pt_regs);
-       bad_mode ();
-}
-
-
 int interrupt_init (void)
 {
        /* nothing happens here - we don't setup any IRQs */
@@ -208,13 +69,43 @@ ulong get_timer_masked (void)
 void udelay_masked (unsigned long usec)
 {
        ulong tmo;
+       ulong endtime;
+       signed long diff;
 
-       tmo = usec / 1000;
-       tmo *= CFG_HZ;
-       tmo /= 1000;
+       if (usec >= 1000) {
+               tmo = usec / 1000;
+               tmo *= CFG_HZ;
+               tmo /= 1000;
+       } else {
+               tmo = usec * CFG_HZ;
+               tmo /= (1000*1000);
+       }
 
-       reset_timer_masked ();
+       endtime = get_timer_masked () + tmo;
+
+       do {
+               ulong now = get_timer_masked ();
+               diff = endtime - now;
+       } while (diff >= 0);
+}
+
+/*
+ * This function is derived from PowerPC code (read timebase as long long).
+ * On ARM it just returns the timer value.
+ */
+unsigned long long get_ticks(void)
+{
+       return get_timer(0);
+}
+
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On ARM it returns the number of timer ticks per second.
+ */
+ulong get_tbclk (void)
+{
+       ulong tbclk;
 
-       while (tmo >= get_timer_masked ())
-               /*NOP*/;
+       tbclk = CFG_HZ;
+       return tbclk;
 }