summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorDave Liu <r63238@freescale.com>2008-03-26 22:54:44 +0800
committerWolfgang Denk <wd@denx.de>2008-03-26 23:38:55 +0100
commitbede87f4c87c3ccd868cc60ebf792e0560c6d024 (patch)
treec29f11a33412ccb1191539bae5657836ace6afee
parentcd54081cd479e542fc399b8a40651ff11a1ad849 (diff)
downloadu-boot-imx-bede87f4c87c3ccd868cc60ebf792e0560c6d024.zip
u-boot-imx-bede87f4c87c3ccd868cc60ebf792e0560c6d024.tar.gz
u-boot-imx-bede87f4c87c3ccd868cc60ebf792e0560c6d024.tar.bz2
ata: add the readme for SATA command line
Signed-off-by: Dave Liu <daveliu@freescale.com>
-rw-r--r--doc/README.sata68
1 files changed, 68 insertions, 0 deletions
diff --git a/doc/README.sata b/doc/README.sata
new file mode 100644
index 0000000..3e2c6e8
--- /dev/null
+++ b/doc/README.sata
@@ -0,0 +1,68 @@
+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