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Diffstat (limited to 'cpukit/libcsupport/include/motorola/mc68230.h')
| -rw-r--r-- | cpukit/libcsupport/include/motorola/mc68230.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/cpukit/libcsupport/include/motorola/mc68230.h b/cpukit/libcsupport/include/motorola/mc68230.h new file mode 100644 index 0000000000..d993a150fd --- /dev/null +++ b/cpukit/libcsupport/include/motorola/mc68230.h @@ -0,0 +1,74 @@ +/** + * @file rtems/motorola/mc68230.h + */ + +/* + * mc68230.h -- Low level support code for the Motorola 68230 Parallel + * Interface/Timer (PIT) + * + * Modified by Doug McBride, Colorado Space Grant College + * + * Format taken partly from RTEMS code and mostly from Motorola IDP user's + * manual. RTEMS copyright information below. + * + * COPYRIGHT (c) 1989-1999. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#ifndef _RTEMS_MOTOROLA_MC68230_H +#define _RTEMS_MOTOROLA_MC68230_H + +/* Some Motorola IDP User manual defines: */ +#define MC68230_PIT_ADDR 0x00c01003 /* base address of the PIT */ +#define MC68230_REGOFF 0x04 /* Difference between addresses */ +#define MC68230_VECT 64 +#define MC68230_H1VECT 0x00 +#define MC68230_H2VECT 0x01 +#define MC68230_H3VECT 0x02 +#define MC68230_H4VECT 0x03 + +/* + * mc68230 register offsets + */ +#define MC68230_PGCR 0x00 +#define MC68230_PSRR 1*MC68230_REGOFF +#define MC68230_PADDR 2*MC68230_REGOFF +#define MC68230_PBDDR 3*MC68230_REGOFF +#define MC68230_PCDDR 4*MC68230_REGOFF +#define MC68230_PIVR 5*MC68230_REGOFF +#define MC68230_PACR 6*MC68230_REGOFF +#define MC68230_PBCR 7*MC68230_REGOFF +#define MC68230_PADR 8*MC68230_REGOFF +#define MC68230_PBDR 9*MC68230_REGOFF +#define MC68230_PAAR 10*MC68230_REGOFF +#define MC68230_PBAR 11*MC68230_REGOFF +#define MC68230_PCDR 12*MC68230_REGOFF +#define MC68230_PITSR 13*MC68230_REGOFF +#define MC68230_TCR 16*MC68230_REGOFF +#define MC68230_TIVR 17*MC68230_REGOFF +#define MC68230_CPRH 19*MC68230_REGOFF +#define MC68230_CPRM 20*MC68230_REGOFF +#define MC68230_CPRL 21*MC68230_REGOFF +#define MC68230_CNTRH 23*MC68230_REGOFF +#define MC68230_CNTRM 24*MC68230_REGOFF +#define MC68230_CNTRL 25*MC68230_REGOFF +#define MC68230_TSR 26*MC68230_REGOFF + +/* Some RTEMS style defines: */ +#ifndef MC68230_VOL8 +#define MC68230_VOL8( ptr ) ((volatile uint8_t *)(ptr)) +#endif + +#define MC68230_WRITE( reg, data ) \ + *(MC68230_VOL8(MC68230_PIT_ADDR+reg)) = (data) + +#define MC68230_READ( reg, data ) \ + (data) = *(MC68230_VOL8(MC68230_PIT_ADDR+reg)) + +#endif |