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/*
* Hardware info about Acer PICA 61 and similar
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1995 by Andreas Busse and Ralf Baechle
*/
#ifndef __ASM_MIPS_PICA_H
#define __ASM_MIPS_PICA_H
/*
* The addresses below are virtual address. The mappings are
* created on startup via wired entries in the tlb. The Mips
* Magnum R3000 and R4000 machines are similar in many aspects,
* but many hardware register are accessible at 0xb9000000 in
* instead of 0xe0000000.
*/
/*
* Revision numbers in PICA_ASIC_REVISION
*
* 0xf0000000 - Rev1
* 0xf0000001 - Rev2
* 0xf0000002 - Rev3
*/
#define PICA_ASIC_REVISION 0xe0000008
/*
* The segments of the seven segment LED are mapped
* to the control bits as follows:
*
* (7)
* ---------
* | |
* (2) | | (6)
* | (1) |
* ---------
* | |
* (3) | | (5)
* | (4) |
* --------- . (0)
*/
#define PICA_LED 0xe000f000
/*
* Some characters for the LED control registers
* The original Mips machines seem to have a LED display
* with integrated decoder while the Acer machines can
* control each of the seven segments and the dot independently.
* It only a toy, anyway...
*/
#define LED_DOT 0x01
#define LED_SPACE 0x00
#define LED_0 0xfc
#define LED_1 0x60
#define LED_2 0xda
#define LED_3 0xf2
#define LED_4 0x66
#define LED_5 0xb6
#define LED_6 0xbe
#define LED_7 0xe0
#define LED_8 0xfe
#define LED_9 0xf6
#define LED_A 0xee
#define LED_b 0x3e
#define LED_C 0x9c
#define LED_d 0x7a
#define LED_E 0x9e
#define LED_F 0x8e
#ifndef __LANGUAGE_ASSEMBLY__
extern __inline__ void pica_set_led(unsigned int bits)
{
volatile unsigned int *led_register = (unsigned int *) PICA_LED;
*led_register = bits;
}
#endif
/*
* i8042 keyboard controller for PICA chipset.
* This address is just a guess and seems to differ
* from the other mips machines...
*/
#define PICA_KEYBOARD_ADDRESS 0xe0005000
#define PICA_KEYBOARD_DATA 0xe0005000
#define PICA_KEYBOARD_COMMAND 0xe0005001
#ifndef __LANGUAGE_ASSEMBLY__
typedef struct {
unsigned char data;
unsigned char command;
} pica_keyboard_hardware;
typedef struct {
unsigned char pad0[3];
unsigned char data;
unsigned char pad1[3];
unsigned char command;
} mips_keyboard_hardware;
/*
* For now
*/
#define keyboard_hardware pica_keyboard_hardware
#endif
/*
* i8042 keyboard controller for most other Mips machines.
*/
#define MIPS_KEYBOARD_ADDRESS 0xb9005000
#define MIPS_KEYBOARD_DATA 0xb9005003
#define MIPS_KEYBOARD_COMMAND 0xb9005007
#ifndef __LANGUAGE_ASSEMBLY__
#endif
/*
* PICA timer registers and interrupt no.
* Note that the hardware timer interrupt is actually on
* cpu level 6, but to keep compatibility with PC stuff
* it is remapped to vector 0. See arch/mips/kernel/entry.S.
*/
#define PICA_TIMER_INTERVAL 0xe0000228
#define PICA_TIMER_REGISTER 0xe0000230
/*
* DRAM configuration register
*/
#ifndef __LANGUAGE_ASSEMBLY__
#ifdef __MIPSEL__
typedef struct {
unsigned int bank2 : 3;
unsigned int bank1 : 3;
unsigned int mem_bus_width : 1;
unsigned int reserved2 : 1;
unsigned int page_mode : 1;
unsigned int reserved1 : 23;
} dram_configuration;
#else /* defined (__MIPSEB__) */
typedef struct {
unsigned int reserved1 : 23;
unsigned int page_mode : 1;
unsigned int reserved2 : 1;
unsigned int mem_bus_width : 1;
unsigned int bank1 : 3;
unsigned int bank2 : 3;
} dram_configuration;
#endif
#endif /* __LANGUAGE_ASSEMBLY__ */
#define PICA_DRAM_CONFIG 0xe00fffe0
/*
* PICA interrupt control registers
*/
#define PICA_IO_IRQ_SOURCE 0xe0100000
#define PICA_IO_IRQ_ENABLE 0xe0100002
/*
* Pica interrupt enable bits
*/
#define PIE_PARALLEL (1<<0)
#define PIE_FLOPPY (1<<1)
#define PIE_SOUND (1<<2)
#define PIE_VIDEO (1<<3)
#define PIE_ETHERNET (1<<4)
#define PIE_SCSI (1<<5)
#define PIE_KEYBOARD (1<<6)
#define PIE_MOUSE (1<<7)
#define PIE_SERIAL1 (1<<8)
#define PIE_SERIAL2 (1<<9)
#endif /* __ASM_MIPS_PICA_H */
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