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pxe: Modify README to add the description about FIT image

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Use environment variable "kernel_addr_r" to indicate the location
in RAM where FIT image will be stored.
Use label command "kernel" to indicate which <path> the FIT image at.

Signed-off-by: Wenbin Song <wenbin.song@nxp.com>
This commit is contained in:
Wenbin Song 2016-09-01 16:28:22 +08:00 committed by Tom Rini
parent f63963f048
commit fce78503b2
1 changed files with 6 additions and 6 deletions
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doc/README.pxe
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@ -78,9 +78,9 @@ pxe boot
address of the tftp server from which other files will be retrieved. address of the tftp server from which other files will be retrieved.
kernel_addr_r, initrd_addr_r - locations in RAM at which 'pxe boot' will kernel_addr_r, initrd_addr_r - locations in RAM at which 'pxe boot' will
store the kernel and initrd it retrieves from tftp. These locations will store the kernel(or FIT image) and initrd it retrieves from tftp. These
be passed to the bootm command to boot the kernel. These environment locations will be passed to the bootm command to boot the kernel. These
variables are required to be set. environment variables are required to be set.
fdt_addr_r - location in RAM at which 'pxe boot' will store the fdt blob it fdt_addr_r - location in RAM at which 'pxe boot' will store the fdt blob it
retrieves from tftp. The retrieval is possible if 'fdt' label is defined in retrieves from tftp. The retrieval is possible if 'fdt' label is defined in
@ -138,9 +138,9 @@ menu default - set this label as the default label to boot; this is
specified in a different way specified in a different way
kernel <path> - if this label is chosen, use tftp to retrieve the kernel kernel <path> - if this label is chosen, use tftp to retrieve the kernel
at <path>. it will be stored at the address indicated in (or FIT image) at <path>. it will be stored at the address
the kernel_addr_r environment variable, and that address indicated in the kernel_addr_r environment variable, and
will be passed to bootm to boot this kernel. that address will be passed to bootm to boot this kernel.
append <string> - use <string> as the kernel command line when booting this append <string> - use <string> as the kernel command line when booting this
label. label.