diff options
| author | Dennis Gilmore <dennis@ausil.us> | 2020-09-11 11:56:59 -0500 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2021-01-27 07:25:39 +0100 |
| commit | 74f8977ee92ee649646376f58316bec872aacf2c (patch) | |
| tree | e240d96c08c984e6f4e51b030b79d4914baa0bd7 | |
| parent | e262b2973e22174da666038514d17f0f7171466b (diff) | |
| download | u-boot-74f8977ee92ee649646376f58316bec872aacf2c.zip u-boot-74f8977ee92ee649646376f58316bec872aacf2c.tar.gz u-boot-74f8977ee92ee649646376f58316bec872aacf2c.tar.bz2 | |
ARM: Distro boot: document the need for fdtfile variable to be set
When testing builds provided in https://github.com/openwrt/openwrt/pull/3360
I discovered that fdtfile was not set and as a result the firmware was not
functional. So I am documenting what is needed.
Signed-off-by: Dennis Gilmore <dennis@ausil.us>
Cc: Atish Patra <atish.patra@wdc.com>
Cc: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Vagrant Cascadian <vagrant@debian.org>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Karsten Merker <merker@debian.org>
| -rw-r--r-- | doc/README.distro | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/doc/README.distro b/doc/README.distro index 5076beb..cc1c41e 100644 --- a/doc/README.distro +++ b/doc/README.distro @@ -224,6 +224,17 @@ fdt_addr_r: A size of 1MB for the FDT/DTB seems reasonable. +fdtfile: + + Mandatory. the name of the DTB file for the specific board for instance + the espressobin v5 board the value is "marvell/armada-3720-espressobin.dtb" + while on a clearfog pro it is "armada-388-clearfog-pro.dtb" in the case of + a board providing its firmware based DTB this value can be used to override + the DTB with a different DTB. fdtfile will automatically be set for you if + it matches the format ${soc}-${board}.dtb which covers most 32 bit use cases. + AArch64 generally does not match as the Linux kernel put the dtb files under + SoC vendor directories. + ramdisk_addr_r: Mandatory. The location in RAM where the initial ramdisk will be loaded to |