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authorBin Meng <bmeng.cn@gmail.com>2015-06-23 04:18:49 (GMT)
committerSimon Glass <sjg@chromium.org>2015-07-15 00:03:17 (GMT)
commit3d232878289bf59e83c6b152407a01f6e0fb790b (patch)
tree55413b7266202a293c1df5d571e22700b2370485 /arch/x86/cpu/lapic.c
parentba9091f55d68fc3d7b65a710f9d47c0be15e816d (diff)
downloadu-boot-3d232878289bf59e83c6b152407a01f6e0fb790b.tar.xz
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>
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