Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / powerpc / cpu / ppc4xx / interrupts.c

diff --git a/qemu/roms/u-boot/arch/powerpc/cpu/ppc4xx/interrupts.c b/qemu/roms/u-boot/arch/powerpc/cpu/ppc4xx/interrupts.c
new file mode 100644 (file)
index 0000000..d9b5654
--- /dev/null
+++ b/qemu/roms/u-boot/arch/powerpc/cpu/ppc4xx/interrupts.c
@@ -0,0 +1,193 @@
+/*
+ * (C) Copyright 2000-2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2002 (440 port)
+ * Scott McNutt, Artesyn Communication Producs, smcnutt@artsyncp.com
+ *
+ * (C) Copyright 2003 (440GX port)
+ * Travis B. Sawyer, Sandburst Corporation, tsawyer@sandburst.com
+ *
+ * (C) Copyright 2008 (PPC440X05 port for Virtex 5 FX)
+ * Ricardo Ribalda-Universidad Autonoma de Madrid-ricardo.ribalda@uam.es
+ * Work supported by Qtechnology (htpp://qtec.com)
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <asm/processor.h>
+#include <asm/interrupt.h>
+#include <asm/ppc4xx.h>
+#include <ppc_asm.tmpl>
+#include <commproc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * CPM interrupt vector functions.
+ */
+struct irq_action {
+       interrupt_handler_t *handler;
+       void *arg;
+       int count;
+};
+static struct irq_action irq_vecs[IRQ_MAX];
+
+#if defined(CONFIG_440)
+
+/* SPRN changed in 440 */
+static __inline__ void set_evpr(unsigned long val)
+{
+       asm volatile("mtspr 0x03f,%0" : : "r" (val));
+}
+
+#else /* !defined(CONFIG_440) */
+
+static __inline__ void set_pit(unsigned long val)
+{
+       asm volatile("mtpit %0" : : "r" (val));
+}
+
+static __inline__ void set_evpr(unsigned long val)
+{
+       asm volatile("mtevpr %0" : : "r" (val));
+}
+#endif /* defined(CONFIG_440 */
+
+int interrupt_init_cpu (unsigned *decrementer_count)
+{
+       int vec;
+       unsigned long val;
+
+       /* decrementer is automatically reloaded */
+       *decrementer_count = 0;
+
+       /*
+        * Mark all irqs as free
+        */
+       for (vec = 0; vec < IRQ_MAX; vec++) {
+               irq_vecs[vec].handler = NULL;
+               irq_vecs[vec].arg = NULL;
+               irq_vecs[vec].count = 0;
+       }
+
+#ifdef CONFIG_4xx
+       /*
+        * Init PIT
+        */
+#if defined(CONFIG_440)
+       val = mfspr( SPRN_TCR );
+       val &= (~0x04400000);           /* clear DIS & ARE */
+       mtspr( SPRN_TCR, val );
+       mtspr( SPRN_DEC, 0 );           /* Prevent exception after TSR clear*/
+       mtspr( SPRN_DECAR, 0 );         /* clear reload */
+       mtspr( SPRN_TSR, 0x08000000 );  /* clear DEC status */
+       val = gd->bd->bi_intfreq/1000;  /* 1 msec */
+       mtspr( SPRN_DECAR, val );               /* Set auto-reload value */
+       mtspr( SPRN_DEC, val );         /* Set inital val */
+#else
+       set_pit(gd->bd->bi_intfreq / 1000);
+#endif
+#endif  /* CONFIG_4xx */
+
+#ifdef CONFIG_ADCIOP
+       /*
+        * Init PIT
+        */
+       set_pit(66000);
+#endif
+
+       /*
+        * Enable PIT
+        */
+       val = mfspr(SPRN_TCR);
+       val |= 0x04400000;
+       mtspr(SPRN_TCR, val);
+
+       /*
+        * Set EVPR to 0
+        */
+       set_evpr(0x00000000);
+
+       /*
+        * Call uic or xilinx_irq pic_enable
+        */
+       pic_enable();
+
+       return (0);
+}
+
+void timer_interrupt_cpu(struct pt_regs *regs)
+{
+       /* nothing to do here */
+       return;
+}
+
+void interrupt_run_handler(int vec)
+{
+       irq_vecs[vec].count++;
+
+       if (irq_vecs[vec].handler != NULL) {
+               /* call isr */
+               (*irq_vecs[vec].handler) (irq_vecs[vec].arg);
+       } else {
+               pic_irq_disable(vec);
+               printf("Masking bogus interrupt vector %d\n", vec);
+       }
+
+       pic_irq_ack(vec);
+       return;
+}
+
+void irq_install_handler(int vec, interrupt_handler_t * handler, void *arg)
+{
+       /*
+        * Print warning when replacing with a different irq vector
+        */
+       if ((irq_vecs[vec].handler != NULL) && (irq_vecs[vec].handler != handler)) {
+               printf("Interrupt vector %d: handler 0x%x replacing 0x%x\n",
+                      vec, (uint) handler, (uint) irq_vecs[vec].handler);
+       }
+       irq_vecs[vec].handler = handler;
+       irq_vecs[vec].arg = arg;
+
+       pic_irq_enable(vec);
+       return;
+}
+
+void irq_free_handler(int vec)
+{
+       debug("Free interrupt for vector %d ==> %p\n",
+             vec, irq_vecs[vec].handler);
+
+       pic_irq_disable(vec);
+
+       irq_vecs[vec].handler = NULL;
+       irq_vecs[vec].arg = NULL;
+       return;
+}
+
+#if defined(CONFIG_CMD_IRQ)
+int do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+       int vec;
+
+       printf ("Interrupt-Information:\n");
+       printf ("Nr  Routine   Arg       Count\n");
+
+       for (vec = 0; vec < IRQ_MAX; vec++) {
+               if (irq_vecs[vec].handler != NULL) {
+                       printf ("%02d  %08lx  %08lx  %d\n",
+                               vec,
+                               (ulong)irq_vecs[vec].handler,
+                               (ulong)irq_vecs[vec].arg,
+                               irq_vecs[vec].count);
+               }
+       }
+
+       return 0;
+}
+#endif