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2 Commits

Author SHA1 Message Date
Rick Chen
d58b0a6ee1 riscv: andes_plic: init plic by scanning each cpu node 
Initialize plic driver by ofnode_for_each_subnode() instead
of cpu_get_count().

This way can support to skip some harts which maybe marked as
unavailable, but the cpu node exists indeed.

Signed-off-by: Rick Chen <rick@andestech.com>
Cc: KC Lin <kclin@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
 2019-09-03 09:30:54 +08:00
Rick Chen
0d389468e2 riscv: Add a SYSCON driver for Andestech's PLIC 
The Platform-Level Interrupt Controller (PLIC)
block holds memory-mapped claim and pending registers
associated with software interrupt. It is required
for handling IPI.

Signed-off-by: Rick Chen <rick@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
 2019-04-08 09:45:08 +08:00