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Diffstat (limited to 'arch/arm/Kconfig')
| -rw-r--r-- | arch/arm/Kconfig | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 0e57155f5050..fc9d147ae30e 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1940,6 +1940,26 @@ config ZBOOT_ROM_SH_MOBILE_SDHI endchoice +config ARM_APPENDED_DTB + bool "Use appended device tree blob to zImage (EXPERIMENTAL)" + depends on OF && !ZBOOT_ROM && EXPERIMENTAL + help + With this option, the boot code will look for a device tree binary + (DTB) appended to zImage + (e.g. cat zImage <filename>.dtb > zImage_w_dtb). + + This is meant as a backward compatibility convenience for those + systems with a bootloader that can't be upgraded to accommodate + the documented boot protocol using a device tree. + + Beware that there is very little in terms of protection against + this option being confused by leftover garbage in memory that might + look like a DTB header after a reboot if no actual DTB is appended + to zImage. Do not leave this option active in a production kernel + if you don't intend to always append a DTB. Proper passing of the + location into r2 of a bootloader provided DTB is always preferable + to this option. + config CMDLINE string "Default kernel command string" default "" |