| 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; |
| * 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 |
| Type: Hard Disk |
| Supports 48-bit addressing |
| 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 |
| => tftp 40000 /tftpboot/uImage.837x |
| => sata write 40000 0 2000 |
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| write ramdisk |
| => tftp 40000 /tftpboot/ramdisk.837x |
| => sata write 40000 2000 8000 |
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| write dtb |
| => tftp 40000 /tftpboot/mpc837xemds.dtb |
| => 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 |
| => sata read 200000 0 2000 |
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| load ramdisk |
| => sata read 1000000 2000 8000 |
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| load dtb |
| => sata read 2000000 a000 1000 |
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| boot |
| => 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 |
| you have to write the image to hard disk under Linux env, |
| before you load image from ext2 filesystem. |
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| => ext2ls sata 0:1 / |
| <DIR> 4096 . |
| <DIR> 4096 .. |
| <DIR> 16384 lost+found |
| 1352023 uImage.837x |
| 3646377 ramdisk.837x |
| 12288 mpc837xemds.dtb |
| 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 |