mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-26 14:40:41 +00:00
1dae2e0eb6
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 <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
/*
|
|
* (C) Copyright 2002
|
|
* Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
/* i8259.h i8259 PIC Registers */
|
|
|
|
#ifndef _ASMI386_I8259_H_
|
|
#define _ASMI386_I8959_H_ 1
|
|
|
|
|
|
/* PIC I/O mapped registers */
|
|
|
|
#define IRR 0x0 /* Interrupt Request Register */
|
|
#define ISR 0x0 /* In-Service Register */
|
|
#define ICW1 0x0 /* Initialization Control Word 1 */
|
|
#define OCW2 0x0 /* Operation Control Word 2 */
|
|
#define OCW3 0x0 /* Operation Control Word 3 */
|
|
#define ICW2 0x1 /* Initialization Control Word 2 */
|
|
#define ICW3 0x1 /* Initialization Control Word 3 */
|
|
#define ICW4 0x1 /* Initialization Control Word 4 */
|
|
#define IMR 0x1 /* Interrupt Mask Register */
|
|
|
|
/* bits for IRR, IMR, ISR and ICW3 */
|
|
#define IR7 0x80 /* IR7 */
|
|
#define IR6 0x40 /* IR6 */
|
|
#define IR5 0x20 /* IR5 */
|
|
#define IR4 0x10 /* IR4 */
|
|
#define IR3 0x08 /* IR3 */
|
|
#define IR2 0x04 /* IR2 */
|
|
#define IR1 0x02 /* IR1 */
|
|
#define IR0 0x01 /* IR0 */
|
|
|
|
/* bits for SEOI */
|
|
#define SEOI_IR7 0x07 /* IR7 */
|
|
#define SEOI_IR6 0x06 /* IR6 */
|
|
#define SEOI_IR5 0x05 /* IR5 */
|
|
#define SEOI_IR4 0x04 /* IR4 */
|
|
#define SEOI_IR3 0x03 /* IR3 */
|
|
#define SEOI_IR2 0x02 /* IR2 */
|
|
#define SEOI_IR1 0x01 /* IR1 */
|
|
#define SEOI_IR0 0x00 /* IR0 */
|
|
|
|
/* OCW2 bits */
|
|
#define OCW2_RCLR 0x00 /* Rotate/clear */
|
|
#define OCW2_NEOI 0x20 /* Non specific EOI */
|
|
#define OCW2_NOP 0x40 /* NOP */
|
|
#define OCW2_SEOI 0x60 /* Specific EOI */
|
|
#define OCW2_RSET 0x80 /* Rotate/set */
|
|
#define OCW2_REOI 0xA0 /* Rotate on non specific EOI */
|
|
#define OCW2_PSET 0xC0 /* Priority Set Command */
|
|
#define OCW2_RSEOI 0xE0 /* Rotate on specific EOI */
|
|
|
|
/* ICW1 bits */
|
|
#define ICW1_SEL 0x10 /* Select ICW1 */
|
|
#define ICW1_LTIM 0x08 /* Level-Triggered Interrupt Mode */
|
|
#define ICW1_ADI 0x04 /* Address Interval */
|
|
#define ICW1_SNGL 0x02 /* Single PIC */
|
|
#define ICW1_EICW4 0x01 /* Expect initilization ICW4 */
|
|
|
|
/* ICW2 is the starting vector number */
|
|
|
|
/* ICW2 is bit-mask of present slaves for a master device,
|
|
* or the slave ID for a slave device */
|
|
|
|
/* ICW4 bits */
|
|
#define ICW4_AEOI 0x02 /* Automatic EOI Mode */
|
|
#define ICW4_PM 0x01 /* Microprocessor Mode */
|
|
|
|
int i8259_init(void);
|
|
|
|
#endif
|