xref: /openbmc/u-boot/include/ioports.h (revision e7e90901)
1 /*
2  * definitions for MPC8260 I/O Ports
3  *
4  * (in addition to those provided in <asm/immap_8260.h>)
5  *
6  * Murray.Jensen@cmst.csiro.au, 20-Oct-00
7  */
8 
9 /*
10  * this structure mirrors the layout of the five port registers in
11  * the internal memory map - see iop8260_t in <asm/immap_8260.h>
12  */
13 typedef struct {
14     unsigned int pdir;		/* Port Data Direction Register (35-3) */
15     unsigned int ppar;		/* Port Pin Assignment Register (35-4) */
16     unsigned int psor;		/* Port Special Options Register (35-5) */
17     unsigned int podr;		/* Port Open Drain Register (35-2) */
18     unsigned int pdat;		/* Port Data Register (35-3) */
19 } ioport_t;
20 
21 /*
22  * this macro calculates the address within the internal
23  * memory map (im) of the set of registers for a port (idx)
24  *
25  * the internal memory map aligns the above structure on
26  * a 0x20 byte boundary
27  */
28 #ifdef CONFIG_MPC85xx
29 #define ioport_addr(im, idx) (ioport_t *)((uint)&(im->im_cpm_iop) + ((idx)*0x20))
30 #else
31 #define ioport_addr(im, idx) (ioport_t *)((uint)&(im)->im_ioport + ((idx)*0x20))
32 #endif
33 
34 /*
35  * this structure provides configuration
36  * information for one port pin
37  */
38 typedef struct {
39     unsigned char conf:1;	/* if 1, configure this port */
40     unsigned char ppar:1;	/* Port Pin Assignment Register (35-4) */
41     unsigned char psor:1;	/* Port Special Options Register (35-2) */
42     unsigned char pdir:1;	/* Port Data Direction Register (35-3) */
43     unsigned char podr:1;	/* Port Open Drain Register (35-2) */
44     unsigned char pdat:1;	/* Port Data Register (35-2) */
45 } iop_conf_t;
46 
47 /*
48  * a table that contains configuration information for all 32 pins
49  * of all four MPC8260 I/O ports.
50  *
51  * NOTE: in the second dimension of this table, index 0 refers to pin 31
52  * and index 31 refers to pin 0. this made the code in the table look more
53  * like the table in the 8260UM (and in the hymod manuals).
54  */
55 extern const iop_conf_t iop_conf_tab[4][32];
56 
57 typedef struct {
58 	unsigned char	port;
59 	unsigned char	pin;
60 	int		dir;
61 	int		open_drain;
62 	int		assign;
63 } qe_iop_conf_t;
64 
65 #define QE_IOP_TAB_END	(-1)
66