void __init
init_IRQ(void)
{
int i;
/* clear all interrupt masks */
#ifndef CONFIG_SVINTO_SIM
*R_IRQ_MASK0_CLR = 0xffffffff;
*R_IRQ_MASK1_CLR = 0xffffffff;
*R_IRQ_MASK2_CLR = 0xffffffff;
#endif
*R_VECT_MASK_CLR = 0xffffffff;
for (i = 0; i < 256; i++)
etrax_irv->v[i] = weird_irq;
/* Initialize IRQ handler descriptors. */
for(i = 2; i < NR_IRQS; i++) {
irq_desc[i].chip = &crisv10_irq_type;
set_int_vector(i, interrupt[i]);
}
/* the entries in the break vector contain actual code to be
executed by the associated break handler, rather than just a jump
address. therefore we need to setup a default breakpoint handler
for all breakpoints */
for (i = 0; i < 16; i++)
set_break_vector(i, do_sigtrap);
/* except IRQ 15 which is the multiple-IRQ handler on Etrax100 */
set_int_vector(15, multiple_interrupt);
/* 0 and 1 which are special breakpoint/NMI traps */
set_int_vector(0, hwbreakpoint);
set_int_vector(1, IRQ1_interrupt);
/* and irq 14 which is the mmu bus fault handler */
set_int_vector(14, mmu_bus_fault);
/* setup the system-call trap, which is reached by BREAK 13 */
set_break_vector(13, system_call);
/* setup a breakpoint handler for debugging used for both user and
kernel mode debugging (which is why it is not inside an ifdef
CONFIG_ETRAX_KGDB) */
set_break_vector(8, gdb_handle_breakpoint);
#ifdef CONFIG_ETRAX_KGDB
/* setup kgdb if its enabled, and break into the debugger */
kgdb_init();
breakpoint();
#endif
}
void __init
init_IRQ(void)
{
int i;
#ifndef CONFIG_SVINTO_SIM
*R_IRQ_MASK0_CLR = 0xffffffff;
*R_IRQ_MASK1_CLR = 0xffffffff;
*R_IRQ_MASK2_CLR = 0xffffffff;
#endif
*R_VECT_MASK_CLR = 0xffffffff;
for (i = 0; i < 256; i++)
etrax_irv->v[i] = weird_irq;
for(i = 2; i < NR_IRQS; i++) {
irq_set_chip_and_handler(i, &crisv10_irq_type,
handle_simple_irq);
set_int_vector(i, interrupt[i]);
}
for (i = 0; i < 16; i++)
set_break_vector(i, do_sigtrap);
set_int_vector(15, multiple_interrupt);
set_int_vector(0, hwbreakpoint);
set_int_vector(1, IRQ1_interrupt);
set_int_vector(14, mmu_bus_fault);
set_break_vector(13, system_call);
set_break_vector(8, gdb_handle_breakpoint);
#ifdef CONFIG_ETRAX_KGDB
kgdb_init();
breakpoint();
#endif
}
void
kgdb_init(void)
{
/* could initialize debug port as well but it's done in head.S already... */
/* breakpoint handler is now set in irq.c */
set_int_vector(8, kgdb_handle_serial);
enableDebugIRQ();
}
void init_syscall()
{
kprintf("Initializing syscall\n");
syscall_proxy_entry = SYSCALL_PROXY_VADDR;
memcpy(
sysenter_proxy_start_origin, (void *)SYSCALL_PROXY_VADDR,
(ulong)sysenter_proxy_end_origin - (ulong)sysenter_proxy_start_origin
);
init_syscall_msr();
set_int_vector(INT_VECTOR_SYS_CALL, int_syscall_handler);
}
void arch_free_irq(int irq)
{
set_int_vector(irq, bad_interrupt[irq], 0);
}
void arch_setup_irq(int irq)
{
set_int_vector(irq, interrupt[irq], sinterrupt[irq]);
}