sbd.h
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上传日期:2013-04-10
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- /*
- * sbd.h: cpu board definitions for Galileo-9
- * Copyright (c) 1997 Algorithmics Ltd
- */
- #ifndef MHZ
- /* fastest possible pipeline clock */
- #define MHZ 150
- #endif
- /* FIXME These timings are completely fictional */
- #define RAMCYCLE 60 /* 60ns dram cycle */
- #define ROMCYCLE 750 /* ~750ns rom cycle */
- #define CACHECYCLE (1000/MHZ) /* internal clock */
- #define CYCLETIME CACHECYCLE
- #define CACHEMISS (CYCLETIME * 6)
- /*
- * rough scaling factors for 2 instruction DELAY loop to get 1ms and 1us delays
- */
- #define ASMDELAY(ns,icycle)
- (((ns) + (icycle)) / ((icycle) * 2))
- #define CACHEUS ASMDELAY(1000, CACHECYCLE)
- #define RAMUS ASMDELAY(1000, CACHEMISS+RAMCYCLE)
- #define ROMUS ASMDELAY(1000, CACHEMISS+ROMCYCLE)
- #define CACHEMS ASMDELAY(1000000, CACHECYCLE)
- #define RAMMS ASMDELAY(1000000, CACHEMISS+RAMCYCLE)
- #define ROMMS ASMDELAY(1000000, CACHEMISS+ROMCYCLE)
- #ifndef __ASSEMBLY__
- #define nsdelay(ns) mips_cycle (ASMDELAY (ns, CACHECYCLE))
- #define usdelay(us) mips_cycle (ASMDELAY ((us)*1000, CACHECYCLE))
- #endif
- #define DRAM_BASE 0x00000000
- #define PCI_IO_BASE 0x10000000
- #define PCI_IO_SIZE 0x02000000
- #define PCI_MEM_BASE 0x12000000
- #define PCI_MEM_SIZE 0x02000000
- #define GT64011_BASE 0x14000000
- #define DUART_BASE 0x1d000000
- #define FLASH_BASE 0x1f000000
- #define PROM_BASE 0x1fc00000
- #define LOCAL_MEM DRAM_BASE
- #define LOCAL_MEM_SIZE (128*1024*1024) /* SDRAM size (16MB) */
- #define BOOTPROM_BASE PROM_BASE
- #define DUART_CLOCK 3686400