aboutsummaryrefslogtreecommitdiff
path: root/doc/README.pxe
AgeCommit message (Collapse)Author
2022-02-11cmd: pxe_utils: sysboot: add kaslr-seed generation supportZhang Ning
this will add kaslrseed keyword to sysboot lable, when it set, it will request to genarate random number from hwrng as kaslr-seed. with this patch exlinux.conf label looks like label l0 menu testing linux /boot/vmlinuz-5.15.16-arm initrd /boot/initramfs-5.15.16-arm.img fdtdir /boot/dtbs/5.15.16-arm/ kaslrseed append root=UUID=92ae1e50-eeeb-4c5b-8939-7e1cd6cfb059 ro Tested on Khadas VIM with kernel 5.16.0-rc5-arm64, Debian 11. Signed-off-by: Zhang Ning <zhangn1985@qq.com>
2022-01-15cmd: pxe_utils: sysboot: add label override supportAmjad Ouled-Ameur
This will allow consumers to choose a pxe label at runtime instead of having to prompt the user. One good use-case for this, is choosing whether or not to apply a dtbo depending on the hardware configuration. e.g: for TI's AM335x EVM, it would be convenient to apply a particular dtbo only when the J9 jumper is on PRUSS mode. To achieve this, the pxe menu should have 2 labels, one with the dtbo and the other without, then the "pxe_label_override" env variable should point to the label with the dtbo at runtime only when the jumper is on PRUSS mode. This change can be used for different use-cases and bring more flexibilty to consumers who use sysboot/pxe_utils. if "pxe_label_override" is set but does not exist in the pxe menu, the code should fallback to the default label if given, and no failure is returned but rather a warning message. Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Artem Lapkin <email2tema@gmail.com> Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
2021-01-27cmd: pxe: add support for FDT overlaysNeil Armstrong
This adds support for specifying FDT overlays in an extlinux/pxelinux configuration file. Without this, there is no simple way to apply overlays when the kernel and fdt is loaded by the pxe command. This change adds the 'fdtoverlays' keyword for a label, supporting multiple overlay files to be applied on top of the fdt specified in the 'fdt' or 'devicetree' keyword. Example: label linux kernel /Image fdt /soc-board.dtb fdtoverlays /soc-board-function.dtbo append console=ttyS0,115200 root=/dev/mmcblk0p2 rootwait This code makes usage of a new variable called fdtoverlay_addr_r used to load the overlay files without overwritting anything important. Cc: Tom Rini <trini@konsulko.com> Cc: Andre Heider <a.heider@gmail.com> Cc: Jernej Škrabec <jernej.skrabec@siol.net> Cc: Jonas Karlman <jonas@kwiboo.se> Tested-by: Jernej Škrabec <jernej.skrabec@siol.net> Reviewed-by: Jernej Škrabec <jernej.skrabec@siol.net> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2018-10-08cmd: pxe: add support for FIT config selectionPatrick Delaunay
Add a way in configuration files (exlinux.conf for sysboot command) to select a specific FIT configuration. The configuration is selected with a string added after the FIT filename in the label "KERNEL" or "LINUX", using the same format than bootm command: KERNEL [Filename]#<conf>[#<extra-conf[#...]] This configuration string, beginning by '#', is directly appended to bootm argument 1 after <kernel_addr_r>. bootm [<kernel_addr_r>]#<conf>[#<extra-conf[#...]] see doc/uImage.FIT/command_syntax_extensions.txt for details Example : KERNEL /fit.itb#cfg1 KERNEL /fit.itb#cfg2 Configuration can be use also for overlay management : KERNEL /fit.itb#cfg1#dtbo1#dtbo3 see doc/uImage.FIT/overlay-fdt-boot.txt for details Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2016-09-07pxe: Modify README to add the description about FIT imageWenbin Song
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>
2016-02-06Use correct spelling of "U-Boot"Bin Meng
Correct spelling of "U-Boot" shall be used in all written text (documentation, comments in source files etc.). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Heiko Schocher <hs@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Minkyu Kang <mk7.kang@samsung.com>
2015-09-03doc: document the fdtdir PXE commandStefan Brüns
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
2015-09-03doc: Fix inconsistent filename in PXE config exampleStefan Brüns
The default config includes base.menu, not linux.list Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
2013-07-24Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2012-09-27PXE: FDT: Add support for fdt in PXEChander Kashyap
Now DT support is becoming common for all new SoC's. Hence it is better to have option for getting specific FDT from the remote server. This patch adds support for new label i.e. 'fdt'. This will allow to retrieve 'fdt blob' from the remote server. This patch take care for the following scenarios. The usage of fdt is optional. The 'fdt blob' can be retrieved from tftp or can be available locally or can be absent. If 'fdt_addr_r' environment variable is set and 'fdt' label is defined retrieve 'fdt blob' from tftp. 'fdt_addr_r' is then passed along bootm command. If 'fdt_addr' is set and 'fdt blob' is not retrieved from the tftp pass 'fdt_addr' to bootm command. In this case 'fdt blob' will be available at 'fdt_addr'. If 'fdt_addr' is not set and 'fdt blob' is not retrieve from tftp pass NULL to boot command. In this case 'fdt blob' is not required and absent. Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org> Acked-by: Jason Hobbs <jason.hobbs@calxeda.com>
2012-06-21pxe: parse initrd file from append stringRob Herring
For syslinux, the initrd can be set in the append string as "initrd=<file>", so try to find it there if we haven't already set the initrd. Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2011-12-19Coding Style cleanupWolfgang Denk
Fix trailing white space, indentation by spaces instead of TABs, excessive blank lines, trailing blank lines. Signed-off-by: Wolfgang Denk <wd@denx.de>
2011-10-17Add pxe commandJason Hobbs
Add pxe command, which is intended to mimic PXELINUX functionality. 'pxe get' uses tftp to retrieve a file based on UUID, MAC address or IP address. 'pxe boot' interprets the contents of PXELINUX config like file to boot using a specific initrd, kernel and kernel command line. This patch also adds a README.pxe file - see it for more details on the pxe command. Signed-off-by: Jason Hobbs <jason.hobbs@calxeda.com>