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A previous change added 'console=tty1' to the default kernel command line on armsr, in order to ensure the framebuffer console is enabled on systems capable of graphics output. Unfortunately, this change broke boards that used device tree (DT) firmware with serial consoles, as the serial console specified by the system firmware (stdout-path) was no longer setup by the kernel. A bit of probing determined that the SPCR (serial port console direction table) on ACPI systems was preventing Linux from setting up a default framebuffer console on these systems (which is why console=tty1 was added). (The affected ACPI systems are usually VMs using QEMU's 'virt' machine and EDK2 firmware. The firmware on these systems does not remove the SPCR when a screen is present) So to ensure all possible systems are setup correctly, we modify the kernel so all "default" console types (serial and screen) are setup when no console= arguments are specified on the kernel command line. Signed-off-by: Mathew McBride <matt@traverse.com.au> Fixes:c099523d66("use console=tty1 to make console more readily available") Link: https://github.com/openwrt/openwrt/pull/17012 Signed-off-by: Robert Marko <robimarko@gmail.com> (cherry picked from commit3697022ce3) Link: https://github.com/openwrt/openwrt/pull/19894 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>