1 files changed, 51 insertions, 0 deletions
diff --git a/include/ioports.h b/include/ioports.h
new file mode 100644
index 0000000..8f5947f
--- /dev/null
+++ b/include/ioports.h
@@ -0,0 +1,51 @@
+/*
+ * definitions for MPC8260 I/O Ports
+ *
+ * (in addition to those provided in <asm/immap_8260.h>)
+ *
+ * Murray.Jensen@cmst.csiro.au, 20-Oct-00
+ */
+
+/*
+ * this structure mirrors the layout of the five port registers in
+ * the internal memory map - see iop8260_t in <asm/immap_8260.h>
+ */
+typedef struct {
+    unsigned int pdir;		/* Port Data Direction Register (35-3) */
+    unsigned int ppar;		/* Port Pin Assignment Register (35-4) */
+    unsigned int psor;		/* Port Special Options Register (35-5) */
+    unsigned int podr;		/* Port Open Drain Register (35-2) */
+    unsigned int pdat;		/* Port Data Register (35-3) */
+} ioport_t;
+
+/*
+ * this macro calculates the address within the internal
+ * memory map (im) of the set of registers for a port (idx)
+ *
+ * the internal memory map aligns the above structure on
+ * a 0x20 byte boundary
+ */
+#define ioport_addr(im, idx) (ioport_t *)((uint)&(im)->im_ioport + ((idx)*0x20))
+
+/*
+ * this structure provides configuration
+ * information for one port pin
+ */
+typedef struct {
+    unsigned char conf:1;	/* if 1, configure this port */
+    unsigned char ppar:1;	/* Port Pin Assignment Register (35-4) */
+    unsigned char psor:1;	/* Port Special Options Register (35-2) */
+    unsigned char pdir:1;	/* Port Data Direction Register (35-3) */
+    unsigned char podr:1;	/* Port Open Drain Register (35-2) */
+    unsigned char pdat:1;	/* Port Data Register (35-2) */
+} iop_conf_t;
+
+/*
+ * a table that contains configuration information for all 32 pins
+ * of all four MPC8260 I/O ports.
+ *
+ * NOTE: in the second dimension of this table, index 0 refers to pin 31
+ * and index 31 refers to pin 0. this made the code in the table look more
+ * like the table in the 8260UM (and in the hymod manuals).
+ */
+extern const iop_conf_t iop_conf_tab[4][32];