tree 55413b7266202a293c1df5d571e22700b2370485
parent ba9091f55d68fc3d7b65a710f9d47c0be15e816d
author Bin Meng <bmeng.cn@gmail.com> 1435033129 +0800
committer Simon Glass <sjg@chromium.org> 1436918597 -0600

x86: Add I/O APIC register access routines

I/O APIC registers are addressed indirectly. Add io_apic_read() and
io_apic_write() routines to help register access. Two macros for I/O
APIC ID and version register offset are also added.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>