xref: /linux/include/linux/scx200.h (revision 498495dba268b20e8eadd7fe93c140c68b6cc9d2)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* linux/include/linux/scx200.h
3 
4    Copyright (c) 2001,2002 Christer Weinigel <wingel@nano-system.com>
5 
6    Defines for the National Semiconductor SCx200 Processors
7 */
8 
9 /* Interesting stuff for the National Semiconductor SCx200 CPU */
10 
11 extern unsigned scx200_cb_base;
12 
13 #define scx200_cb_present() (scx200_cb_base!=0)
14 
15 /* F0 PCI Header/Bridge Configuration Registers */
16 #define SCx200_DOCCS_BASE 0x78	/* DOCCS Base Address Register */
17 #define SCx200_DOCCS_CTRL 0x7c	/* DOCCS Control Register */
18 
19 /* GPIO Register Block */
20 #define SCx200_GPIO_SIZE 0x2c	/* Size of GPIO register block */
21 
22 /* General Configuration Block */
23 #define SCx200_CB_BASE_FIXED 0x9000	/* Base fixed at 0x9000 according to errata? */
24 
25 /* Watchdog Timer */
26 #define SCx200_WDT_OFFSET 0x00	/* offset within configuration block */
27 #define SCx200_WDT_SIZE 0x05	/* size */
28 
29 #define SCx200_WDT_WDTO 0x00	/* Time-Out Register */
30 #define SCx200_WDT_WDCNFG 0x02	/* Configuration Register */
31 #define SCx200_WDT_WDSTS 0x04	/* Status Register */
32 #define SCx200_WDT_WDSTS_WDOVF (1<<0) /* Overflow bit */
33 
34 /* High Resolution Timer */
35 #define SCx200_TIMER_OFFSET 0x08
36 #define SCx200_TIMER_SIZE 0x06
37 
38 /* Clock Generators */
39 #define SCx200_CLOCKGEN_OFFSET 0x10
40 #define SCx200_CLOCKGEN_SIZE 0x10
41 
42 /* Pin Multiplexing and Miscellaneous Configuration Registers */
43 #define SCx200_MISC_OFFSET 0x30
44 #define SCx200_MISC_SIZE 0x10
45 
46 #define SCx200_PMR 0x30		/* Pin Multiplexing Register */
47 #define SCx200_MCR 0x34		/* Miscellaneous Configuration Register */
48 #define SCx200_INTSEL 0x38	/* Interrupt Selection Register */
49 #define SCx200_IID 0x3c		/* IA On a Chip Identification Number Reg */
50 #define SCx200_REV 0x3d		/* Revision Register */
51 #define SCx200_CBA 0x3e		/* Configuration Base Address Register */
52 #define SCx200_CBA_SCRATCH 0x64	/* Configuration Base Address Scratchpad */
53