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- 1. SATA usage in U-Boot
- There are two ways to operate the hard disk
- * Read/write raw blocks from/to SATA hard disk
- * ext2load to read a file from ext2 file system
- 1.0 How to read the SATA hard disk's information?
- => sata info
- 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)
- 1.1 How to raw write the kernel, file system, dtb to a SATA hard disk?
- Notes: Hard disk sectors are normally 512 bytes, so
- 0x1000 sectors = 2 MBytes
- write kernel
- => tftp 40000 /tftpboot/uImage.837x
- => sata write 40000 0 2000
- write ramdisk
- => tftp 40000 /tftpboot/ramdisk.837x
- => sata write 40000 2000 8000
- write dtb
- => tftp 40000 /tftpboot/mpc837xemds.dtb
- => sata write 40000 a000 1000
- 1.2 How to raw read the kernel, file system, dtb from a SATA hard disk?
- load kernel
- => sata read 200000 0 2000
- load ramdisk
- => sata read 1000000 2000 8000
- load dtb
- => sata read 2000000 a000 1000
- boot
- => bootm 200000 1000000 2000000
- 1.3 How to load an image from an ext2 file system in U-Boot?
- U-Boot doesn't support writing to an ext2 file system, so the
- files must be written by other means (e.g. linux).
- => ext2ls sata 0:1 /
- <DIR> 4096 .
- <DIR> 4096 ..
- <DIR> 16384 lost+found
- 1352023 uImage.837x
- 3646377 ramdisk.837x
- 12288 mpc837xemds.dtb
- 12 hello.txt
- => ext2load sata 0:1 200000 /uImage.837x
- => ext2load sata 0:1 1000000 /ramdisk.837x
- => ext2load sata 0:1 2000000 /mpc837xemds.dtb
- => bootm 200000 1000000 2000000
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