e8f7ba404f
according to gvb's suggestion, polishing for the doc. Signed-off-by: Jerry Van Baren <gerald.vanbaren@ge.com> Signed-off-by: Dave Liu <daveliu@freescale.com>
69 lines
1.5 KiB
Plaintext
69 lines
1.5 KiB
Plaintext
1. SATA usage in U-boot
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There are two ways to operate the hard disk
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* Read/write raw blocks from/to SATA hard disk
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* ext2load to read a file from ext2 file system
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1.0 How to read the SATA hard disk's information?
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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 raw write the kernel, file system, dtb to a SATA hard disk?
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Notes: Hard disk sectors are normally 512 bytes, so
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0x1000 sectors = 2 MBytes
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write 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 raw read the kernel, file system, dtb from a SATA hard disk?
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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 an image from an ext2 file system in U-boot?
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U-boot doesn't support writing to an ext2 file system, so the
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files must be written by other means (e.g. linux).
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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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