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我的板子也用到了A13地址线,用原厂给的U-BOOT,最初的启动如下:
U-Boot 1.1.4 (Jan 2 2016 - 01:10:30)
ap147 - Honey Bee 2.0DRAM:
sri
Honey Bee 2.0
ath_ddr_initial_config(195): (16bit) ddr2 init
tap = 0x00000003
Tap (low, high) = (0x9, 0x23)
Tap values = (0x16, 0x16, 0x16, 0x16)
4 MB
Top of RAM usable for U-Boot at: 80400000
Reserving 198k for U-Boot at: 803cc000
Reserving 192k for malloc() at: 8039c000
Reserving 44 Bytes for Board Info at: 8039bfd4
Reserving 36 Bytes for Global Data at: 8039bfb0
Reserving 128k for boot params() at: 8037bfb0
Stack Pointer at: 8037bf98
然后就停止启动了.......
这个u-boot好像只读出了4MB的DDR2,排查硬件问题找了3天,发现电源都正确,DDR2的布线也没有什么问题,现在怀疑软件问题,请各位大神帮忙.....急!
愿帮忙的大神请加我QQ:285385799,重谢! |
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