[U-Boot-Users] [PATCH v4 8/9] ata: add the readme for SATA command line

[Jerry Van Baren <gerald.vanbaren@ge.com>]

Hi Dave,

Proposed English polishing.

Best regards,
gvb


Dave Liu wrote:
> 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

There are two ways to operate the hard disk

> +
> +	* Raw read/write block from/to SATA hard disk;

	* Read/write raw blocks from/to the SATA hard disk

> +	* ext2load read file from ext2 filesytem in hard disk

	* ext2load to read a file from an 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)
> +
> +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

s/wirte/write/

> +	=> 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?

1.2 How to raw read the kernel, filesystem, 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 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
> +
> +	=> 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
> +