x86: Provide access to the IDT

Add a function to return the address of the Interrupt Descriptor Table.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/arch/x86/cpu/interrupts.c b/arch/x86/cpu/interrupts.c
index a21d2a6c5000c5d26de5dfd0c43b6dd9c5299c35..c777d3646fca7e1db142216b3449e737aba0752a 100644 (file)
--- a/arch/x86/cpu/interrupts.c
+++ b/arch/x86/cpu/interrupts.c
@@ -147,6 +147,11 @@ int cpu_init_interrupts(void)
        return 0;
 }
 
+void *x86_get_idt(void)
+{
+       return &idt_ptr;
+}
+
 void __do_irq(int irq)
 {
        printf("Unhandled IRQ : %d\n", irq);

diff --git a/arch/x86/include/asm/interrupt.h b/arch/x86/include/asm/interrupt.h
index 25abde7be6ebf1c3027b181a6e2025d8b0d70701..0a75f89d9561b530ed04aec19729c63e94838dd0 100644 (file)
--- a/arch/x86/include/asm/interrupt.h
+++ b/arch/x86/include/asm/interrupt.h
@@ -38,4 +38,6 @@ extern char exception_stack[];
  */
 void configure_irq_trigger(int int_num, bool is_level_triggered);
 
+void *x86_get_idt(void);
+
 #endif