Signed-off-by: Dave Liu daveliu@freescale.com --- doc/README.sata | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 69 insertions(+), 0 deletions(-) create mode 100644 doc/README.sata
diff --git a/doc/README.sata b/doc/README.sata new file mode 100644 index 0000000..5cc69db --- /dev/null +++ b/doc/README.sata @@ -0,0 +1,69 @@ +1. SATA usage in U-boot + + 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 + +1.0 How to know the information of SATA hard disk? + + => 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 save the kernel, filesystem, dtb to SATA hard disk with raw? + + Notes: 0x1000 sectors = 2 MBytes + + wirte 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 read the kernel, filesystem, dtb from SATA hard disk with raw? + + 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 image from ext2 filesystem 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. + + => 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 +