u-boot.git/common/cmd_pxe.c, branch v2014.07

Merge branch 'master' of git://git.denx.de/u-boot-arm

2014-02-26T21:49:58+00:00

Conflicts:
	arch/arm/cpu/armv7/config.mk
	board/ti/am43xx/mux.c
	include/configs/am43xx_evm.h

Signed-off-by: Tom Rini

pxe: prepend fdtdir to DTB name irrespective of source

2014-02-21T16:06:13+00:00

The directory name from an fdtdir directive in a PXE config file should
always be pre-pended to the DTB filename; it shouldn't matter whether
the DTB filename came from the $fdtfile environment variable, or whether
it was constructed dynamically from ${soc}-${board}.dtb. Fix the code to
always prepend the directory name.

Reported-by: Dennis Gilmore 
Fixes: c61d94d86035 ("pxe: implement fdtdir extlinux.conf tag")
Signed-off-by: Stephen Warren 
Reviewed-by: Dennis Gilmore 
Tested-by: Dennis Gilmore

pxe: allow compilation when !defined(CONFIG_CMD_NET)

2014-02-21T14:30:05+00:00

pxe.c provides both the "pxe" command which relies on a network, and the
"sysboot" command which doesn't. Fix the file to compile when network
support isn't enabled. This is useful e.g. on the Raspberry Pi which has
no network support yet, but will soon support the sysboot command.

Signed-off-by: Stephen Warren

cmd_pxe.c add any option for filesystem with sysboot uses generic load

2014-02-04T22:29:36+00:00

Signed-off-by: Dennis Gilmore

pxe: implement fdtdir extlinux.conf tag

2014-02-04T16:51:18+00:00

People who write (or scripts that auto-generate) extlinux.conf don't
want to know about HW-specific information such as FDT filenames. Create
a new extlinux.conf tag "fdtdir" that specifies only the directory where
FDT files are located, and defer all knowledge of the filename to U-Boot.
The algorithm implemented is:

==========
if $fdt_addr_r is set:
  if "fdt" tag was specified in extlinux.conf:
    load the FDT from the filename in the tag
  else if "fdtdir" tag was specified in extlinux.conf:
    if "fdtfile" is set in the environment:
      load the FDT from filename in "$fdtfile"
    else:
      load the FDT from some automatically generated filename

if no FDT file was loaded, and $fdtaddr is set:
  # This indicates an FDT packaged with firmware
  use the FDT at $fdtaddr
==========

A small part of an example /boot/extlinux.conf might be:

==========
LABEL primary
        LINUX zImage
        FDTDIR ./

LABEL failsafe
        LINUX bkp/zImage
        FDTDIR bkp/
==========

... with /boot/tegra20-seaboard.dtb or /boot/bkp/tegra20-seaboard.dtb
being loaded by the sysboot/pxe code.

Signed-off-by: Stephen Warren

pxe: support "devicetree" tag

2014-02-04T16:51:18+00:00

The specification for extlinux.conf[1] states that "fdt" is an alias for
"devicetree". To date, U-Boot only implements "fdt". Rectify that.

[1] http://freedesktop.org/wiki/Specifications/BootLoaderSpec/

Signed-off-by: Stephen Warren

cmd_pxe: remove compiling warnings

2014-01-09T15:08:11+00:00

Signed-off-by: David Feng

pxe: fix handling of absolute paths

2013-11-04T16:24:22+00:00

pxelinux and syslinux differ in their handling of absolute paths in menu
files. A pxelinux path is aways prepended with the bootfile path while
syslinux allows for absolute paths. u-boot was always treating a leading
/ as an absolute path breaking some pxelinux setups. Fix this by adding
a flag to distinguish pxelinux vs. syslinux behavior.

Reported-by: Ian Campbell 
Signed-off-by: Rob Herring

Prevent null pointer dereference originating in cmd_pxe.c

2013-10-14T20:49:20+00:00

Pass a valid cmdtp into do_tftpb(), do_ext2load(), and do_get_fat(), to
avoid possible crashes due to null pointer dereferencing.

Commit d7884e047d08447dfd1374e9fa2fdf7ab36e56f5 does not go far enough.
There is still at least one call chain that can result in a crash.

The do_tftpb(), do_ext2load(), and do_get_fat() functions expect a valid
cmdtp.  Passing in NULL is particularly bad in the do_tftpb() case,
because eventually boot_get_kernel() will be called with a NULL cmdtp:

do_tftpb() -> netboot_common() -> bootm_maybe_autostart() -> do_bootm()
-> do_bootm_states() -> bootm_find_os() -> boot_get_kernel()

Around line 991 in cmd_bootm.c, boot_get_kernel() will dereference the
null pointer, and the board will crash.

Signed-off-by: Steven A. Falco

cmd_pxe.c: Pass along 'cmdtp' to do_bootm()/do_bootz()

2013-09-24T13:05:08+00:00

When we call do_bootm() with a vmlinuz, this would lead to a NULL
pointer dereference, and after talking with Wolfgang the right thing to
do here for now is to make sure that we pass cmdtp to these functions
rather than NULL.

Reported-by: Steven A. Falco 
Signed-off-by: Tom Rini