tree 7a25f75c0030b81c7e667e37366bc8f597420806
parent 7480282eca70c737d123b076a80395dd3bdd9818
author Heinrich Schuchardt <heinrich.schuchardt@canonical.com> 1708965146 +0100
committer Leo Yu-Chi Liang <ycliang@andestech.com> 1710225373 +0800

serial: move sbi_dbcn_available to .data section

U-Boot SPL loads the device-tree directly behind main U-Boot overlapping
the .bss section. reserve_fdt() is called in board_init_f() to relocate the
device-tree to a safe location.

Debug UARTs are enabled before board_init_f(). With sbi_dbcn_available in
the .bss section the device-tree is corrupted when _debug_uart_init() is
called in the SBI serial driver. Move the variable to the .data section.

Link: https://bugs.launchpad.net/ubuntu/+source/u-boot/+bug/2054091
Fixes: dfe08374943c ("risc-v: implement DBCN based debug console")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
Tested-by: Conor Dooley <conor.dooley@microchip.com>