Commit e8f7ba40 authored by Dave Liu's avatar Dave Liu Committed by Wolfgang Denk

doc: english polishing for README.sata

according to gvb's suggestion, polishing for the doc.
Signed-off-by: default avatarJerry Van Baren <gerald.vanbaren@ge.com>
Signed-off-by: default avatarDave Liu <daveliu@freescale.com>
parent 3e3f766a
1. SATA usage in U-boot
Two ways to operate the hard disk
There are two ways to operate the hard disk
* Raw read/write block from/to SATA hard disk;
* ext2load read file from ext2 filesytem in hard disk
* Read/write raw blocks from/to SATA hard disk
* ext2load to read a file from ext2 file system
1.0 How to know the information of SATA hard disk?
1.0 How to read the SATA hard disk's information?
=> sata info
......@@ -14,11 +14,12 @@ SATA device 0: Model: ST3320620AS Firm: 3.AAD Ser#: 4QF01ZTN
Supports 48-bit addressing
Capacity: 305245.3 MB = 298.0 GB (625142448 x 512)
1.1 How to save the kernel, filesystem, dtb to SATA hard disk with raw?
1.1 How to raw write the kernel, file system, dtb to a SATA hard disk?
Notes: 0x1000 sectors = 2 MBytes
Notes: Hard disk sectors are normally 512 bytes, so
0x1000 sectors = 2 MBytes
wirte kernel
write kernel
=> tftp 40000 /tftpboot/uImage.837x
=> sata write 40000 0 2000
......@@ -30,7 +31,7 @@ SATA device 0: Model: ST3320620AS Firm: 3.AAD Ser#: 4QF01ZTN
=> tftp 40000 /tftpboot/mpc837xemds.dtb
=> sata write 40000 a000 1000
1.2 How to read the kernel, filesystem, dtb from SATA hard disk with raw?
1.2 How to raw read the kernel, file system, dtb from a SATA hard disk?
load kernel
=> sata read 200000 0 2000
......@@ -44,11 +45,10 @@ SATA device 0: Model: ST3320620AS Firm: 3.AAD Ser#: 4QF01ZTN
boot
=> bootm 200000 1000000 2000000
1.3 How to load image from ext2 filesystem in U-boot?
1.3 How to load an image from an ext2 file system in U-boot?
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.
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 .
......
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