From 1dae2e0eb660553fd18870b53e4c43bd56414e3b Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Thu, 20 Nov 2014 16:11:16 +0800 Subject: [PATCH] x86: Refactor interrupt_init() Rename interrupt_init() in arch/x86/lib/pcat_interrupts.c to i8259_init() and create a new interrupt_init() in arch/x86/cpu/interrupt.c to call i8259_init() followed by a call to cpu_init_interrupts(). Signed-off-by: Bin Meng Acked-by: Simon Glass Tested-by: Simon Glass --- arch/x86/cpu/interrupts.c | 26 ++++++++++++++++++++------ arch/x86/include/asm/i8259.h | 2 ++ arch/x86/lib/pcat_interrupts.c | 9 +-------- 3 files changed, 23 insertions(+), 14 deletions(-) diff --git a/arch/x86/cpu/interrupts.c b/arch/x86/cpu/interrupts.c index 51e2c5923a..ea037246b4 100644 --- a/arch/x86/cpu/interrupts.c +++ b/arch/x86/cpu/interrupts.c @@ -20,6 +20,7 @@ #include #include #include +#include DECLARE_GLOBAL_DATA_PTR; @@ -128,9 +129,6 @@ int cpu_init_interrupts(void) int irq_entry_size = irq_1 - irq_0; void *irq_entry = (void *)irq_0; - /* Just in case... */ - disable_interrupts(); - /* Setup the IDT */ for (i = 0; i < 256; i++) { idt[i].access = 0x8e; @@ -146,9 +144,6 @@ int cpu_init_interrupts(void) load_idt(&idt_ptr); - /* It is now safe to enable interrupts */ - enable_interrupts(); - return 0; } @@ -172,6 +167,25 @@ int disable_interrupts(void) return flags & X86_EFLAGS_IF; } +int interrupt_init(void) +{ + /* Just in case... */ + disable_interrupts(); + +#ifdef CONFIG_SYS_PCAT_INTERRUPTS + /* Initialize the master/slave i8259 pic */ + i8259_init(); +#endif + + /* Initialize core interrupt and exception functionality of CPU */ + cpu_init_interrupts(); + + /* It is now safe to enable interrupts */ + enable_interrupts(); + + return 0; +} + /* IRQ Low-Level Service Routine */ void irq_llsr(struct irq_regs *regs) { diff --git a/arch/x86/include/asm/i8259.h b/arch/x86/include/asm/i8259.h index 73113f90a8..bc4033bed2 100644 --- a/arch/x86/include/asm/i8259.h +++ b/arch/x86/include/asm/i8259.h @@ -69,4 +69,6 @@ #define ICW4_AEOI 0x02 /* Automatic EOI Mode */ #define ICW4_PM 0x01 /* Microprocessor Mode */ +int i8259_init(void); + #endif diff --git a/arch/x86/lib/pcat_interrupts.c b/arch/x86/lib/pcat_interrupts.c index f388db2276..a9af87e4ce 100644 --- a/arch/x86/lib/pcat_interrupts.c +++ b/arch/x86/lib/pcat_interrupts.c @@ -24,12 +24,10 @@ #error "CONFIG_SYS_NUM_IRQS must equal 16 if CONFIG_SYS_NUM_IRQS is defined" #endif -int interrupt_init(void) +int i8259_init(void) { u8 i; - disable_interrupts(); - /* Mask all interrupts */ outb(0xff, MASTER_PIC + IMR); outb(0xff, SLAVE_PIC + IMR); @@ -65,11 +63,6 @@ int interrupt_init(void) /* Interrupt 9 should be level triggered (SCI). The OS might do this */ configure_irq_trigger(9, true); - /* Initialize core interrupt and exception functionality of CPU */ - cpu_init_interrupts(); - - enable_interrupts(); - return 0; }