Diffstat (limited to 'arch/arm/Kconfig')
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index c66e0808c2b..73c320ea172 100644
@@ -1801,6 +1801,18 @@ config ARM_APPENDED_DTB
location into r2 of a bootloader provided DTB is always preferable
to this option.
+ bool "Supplement the appended DTB with traditional ATAG information"
+ depends on ARM_APPENDED_DTB
+ Some old bootloaders can't be updated to a DTB capable one, yet
+ they provide ATAGs with memory configuration, the ramdisk address,
+ the kernel cmdline string, etc. Such information is dynamically
+ provided by the bootloader and can't always be stored in a static
+ DTB. To allow a device tree enabled kernel to be used with such
+ bootloaders, this option allows zImage to extract the information
+ from the ATAG list and store it at run time into the appended DTB.
string "Default kernel command string"