-1. SATA usage in U-boot
+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
-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)
+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 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
=> 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
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 .
- <DIR> 4096 ..
- <DIR> 16384 lost+found
- 1352023 uImage.837x
- 3646377 ramdisk.837x
- 12288 mpc837xemds.dtb
- 12 hello.txt
+ <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