1 1. SATA usage in U-Boot 2 3 There are two ways to operate the hard disk 4 5 * Read/write raw blocks from/to SATA hard disk 6 * ext2load to read a file from ext2 file system 7 8 1.0 How to read the SATA hard disk's information? 9 10 => sata info 11 12 SATA device 0: Model: ST3320620AS Firm: 3.AAD Ser#: 4QF01ZTN 13 Type: Hard Disk 14 Supports 48-bit addressing 15 Capacity: 305245.3 MB = 298.0 GB (625142448 x 512) 16 17 1.1 How to raw write the kernel, file system, dtb to a SATA hard disk? 18 19 Notes: Hard disk sectors are normally 512 bytes, so 20 0x1000 sectors = 2 MBytes 21 22 write kernel 23 => tftp 40000 /tftpboot/uImage.837x 24 => sata write 40000 0 2000 25 26 write ramdisk 27 => tftp 40000 /tftpboot/ramdisk.837x 28 => sata write 40000 2000 8000 29 30 write dtb 31 => tftp 40000 /tftpboot/mpc837xemds.dtb 32 => sata write 40000 a000 1000 33 34 1.2 How to raw read the kernel, file system, dtb from a SATA hard disk? 35 36 load kernel 37 => sata read 200000 0 2000 38 39 load ramdisk 40 => sata read 1000000 2000 8000 41 42 load dtb 43 => sata read 2000000 a000 1000 44 45 boot 46 => bootm 200000 1000000 2000000 47 48 1.3 How to load an image from an ext2 file system in U-Boot? 49 50 U-Boot doesn't support writing to an ext2 file system, so the 51 files must be written by other means (e.g. linux). 52 53 => ext2ls sata 0:1 / 54 <DIR> 4096 . 55 <DIR> 4096 .. 56 <DIR> 16384 lost+found 57 1352023 uImage.837x 58 3646377 ramdisk.837x 59 12288 mpc837xemds.dtb 60 12 hello.txt 61 62 => ext2load sata 0:1 200000 /uImage.837x 63 64 => ext2load sata 0:1 1000000 /ramdisk.837x 65 66 => ext2load sata 0:1 2000000 /mpc837xemds.dtb 67 68 => bootm 200000 1000000 2000000 69
