Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / doc / README.sata

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+1. SATA usage in U-boot
+
+       There are two ways to operate the hard disk
+
+       * Read/write raw blocks from/to SATA hard disk
+       * ext2load to read a file from ext2 file system
+
+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)
+
+1.1 How to raw write the kernel, file system, dtb to a SATA hard disk?
+
+       Notes: Hard disk sectors are normally 512 bytes, so
+               0x1000 sectors = 2 MBytes
+
+       write 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 raw read the kernel, file system, dtb from a SATA hard disk?
+
+       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 an image from an ext2 file system in U-boot?
+
+       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
+
+       => 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