tree ce82a93610acdd6250c6c3d7cb687cde5042b852
parent 3aecc4be97da43464f8c940c4e8e56f49426f9bd
author Atish Patra <atish.patra@wdc.com> 1587492899 -0700
committer Andes <uboot@andestech.com> 1587608056 +0800

riscv: Add boot hartid to device tree

Linux booting protocol mandates that register "a0" contains the hartid.
However, U-Boot can not pass the hartid via a0 during standard UEFI
protocol. DT nodes are commonly used to pass such information to the OS.

Add a DT node under chosen node to indicate the boot hartid. EFI stub
in Linux kernel will parse this node and pass it to the real kernel
in "a0" before jumping to it.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Rick Chen <rick@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Tested-by: Bin Meng <bmeng.cn@gmail.com>