Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / arm / lib / interrupts.c

diff --git a/qemu/roms/u-boot/arch/arm/lib/interrupts.c b/qemu/roms/u-boot/arch/arm/lib/interrupts.c
new file mode 100644 (file)
index 0000000..758b013
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/lib/interrupts.c
@@ -0,0 +1,182 @@
+/*
+ * (C) Copyright 2003
+ * Texas Instruments <www.ti.com>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * (C) Copyright 2002-2004
+ * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
+ *
+ * (C) Copyright 2004
+ * Philippe Robin, ARM Ltd. <philippe.robin@arm.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/proc-armv/ptrace.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_USE_IRQ
+int interrupt_init (void)
+{
+       /*
+        * setup up stacks if necessary
+        */
+       IRQ_STACK_START = gd->irq_sp - 4;
+       IRQ_STACK_START_IN = gd->irq_sp + 8;
+       FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ;
+
+       return arch_interrupt_init();
+}
+
+/* enable IRQ 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, #0xc0\n"
+                            "msr cpsr_c, %1"
+                            : "=r" (old), "=r" (temp)
+                            :
+                            : "memory");
+       return (old & 0x80) == 0;
+}
+#else
+int interrupt_init (void)
+{
+       /*
+        * setup up stacks if necessary
+        */
+       IRQ_STACK_START_IN = gd->irq_sp + 8;
+
+       return 0;
+}
+
+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 ();
+}
+
+#ifndef CONFIG_USE_IRQ
+void do_irq (struct pt_regs *pt_regs)
+{
+       printf ("interrupt request\n");
+       show_regs (pt_regs);
+       bad_mode ();
+}
+#endif