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1. SATA usage in U-boot |
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Two ways to operate the hard disk |
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* Raw read/write block from/to SATA hard disk; |
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* ext2load read file from ext2 filesytem in hard disk |
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1.0 How to know the information of SATA hard disk? |
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=> sata info |
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SATA device 0: Model: ST3320620AS Firm: 3.AAD Ser#: 4QF01ZTN |
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Type: Hard Disk |
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Supports 48-bit addressing |
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Capacity: 305245.3 MB = 298.0 GB (625142448 x 512) |
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1.1 How to save the kernel, filesystem, dtb to SATA hard disk with raw? |
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Notes: 0x1000 sectors = 2 MBytes |
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wirte kernel |
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=> tftp 40000 /tftpboot/uImage.837x |
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=> sata write 40000 0 2000 |
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write ramdisk |
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=> tftp 40000 /tftpboot/ramdisk.837x |
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=> sata write 40000 2000 8000 |
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write dtb |
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=> tftp 40000 /tftpboot/mpc837xemds.dtb |
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=> sata write 40000 a000 1000 |
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1.2 How to read the kernel, filesystem, dtb from SATA hard disk with raw? |
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load kernel |
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=> sata read 200000 0 2000 |
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load ramdisk |
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=> sata read 1000000 2000 8000 |
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load dtb |
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=> sata read 2000000 a000 1000 |
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boot |
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=> bootm 200000 1000000 2000000 |
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1.3 How to load image from ext2 filesystem in U-boot? |
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U-boot doesn't support ext2 write to hard disk, so |
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you have to write the image to hard disk under Linux env, |
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before you load image from ext2 filesystem. |
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=> ext2ls sata 0:1 / |
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<DIR> 4096 . |
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<DIR> 4096 .. |
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<DIR> 16384 lost+found |
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1352023 uImage.837x |
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3646377 ramdisk.837x |
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12288 mpc837xemds.dtb |
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12 hello.txt |
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=> ext2load sata 0:1 200000 /uImage.837x |
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=> ext2load sata 0:1 1000000 /ramdisk.837x |
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=> ext2load sata 0:1 2000000 /mpc837xemds.dtb |
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=> bootm 200000 1000000 2000000 |
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