a20_v2.0_k70运行在xhda20开发板
修改sys_config.fex文件兩個地方
[clock]
pll3??????????????? = 297????????
pll4??????????????? = 300
pll6??????????????? = 600
pll7??????????????? = 297
pll8??????????????? = 336
[dram_para]
dram_baseaddr????????? = 0x40000000
dram_clk???????????????????? = 408
dram_type????????????????? = 3
dram_rank_num???????? = 0xffffffff
dram_chip_density??? = 0xffffffff
dram_io_width?????????? = 0xffffffff
dram_bus_width??????? = 0xffffffff
dram_cas??????????????????? = 9
dram_zq????????????????????? = 0x7b
dram_odt_en????????????? = 0
dram_size????????? ? ? ? ?? = 0xffffffff
dram_tpr0?????????????????? = 0x42d899b7
dram_tpr1?????????????????? = 0xa090
dram_tpr2?????????????????? = 0x22a00
dram_tpr3?????????????????? = 0x0
dram_tpr4?????????????????? = 0x0
dram_tpr5?????????????????? = 0x0
dram_emr1???????????????? = 0x4
dram_emr2???????????????? = 0x10
dram_emr3???????????????? = 0x0
總結
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