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25 lines
841 B
C
25 lines
841 B
C
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#ifndef CPU_H
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#define CPU_H
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/* Define this to the CPU frequency */
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#define CPU_FREQ 336000000 /* CPU clock: 336 MHz */
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#define CFG_EXTAL 12000000 /* EXT clock: 12 Mhz */
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// SDRAM Timings, unit: ns
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#define SDRAM_TRAS 45 /* RAS# Active Time */
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#define SDRAM_RCD 20 /* RAS# to CAS# Delay */
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#define SDRAM_TPC 20 /* RAS# Precharge Time */
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#define SDRAM_TRWL 7 /* Write Latency Time */
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#define SDRAM_TREF 15625 /* Refresh period: 4096 refresh cycles/64ms */
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//#define SDRAM_TREF 7812 /* Refresh period: 8192 refresh cycles/64ms */
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static unsigned long jz_dev;
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static volatile unsigned long *jz_cpmregl, *jz_emcregl;
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volatile unsigned short *jz_emcregs;
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void jz_cpuspeed(unsigned clockspeed);
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void pll_init(unsigned int clock);
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inline int sdram_convert(unsigned int pllin,unsigned int *sdram_freq);
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#endif
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