5ec6960f6f
This patch enables the UART on the CE4100. The UART has a couple of issues that need to be worked around. First the UART is mostly PC compatible except that it is clocked eight times faster than a standard PC so the default configuration provided in arch/x86/include/asm/serial.h needs to be overridden. Second the TX interrupt may not be set correctly all the time. Lastly accessing the UART via I/O space for early_prink() hangs the chip when the IOAPIC is enabled. A custom mem_serial_in() is provided to work around the TX interrupt issue. The configuration issues are dealt with in the call back registered with the 8250 driver via serial8250_set_isa_configurator() Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com> LKML-Reference: <1290436128-17958-1-git-send-email-dirk.brandewie@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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.. | ||
boot | ||
configs | ||
crypto | ||
ia32 | ||
include/asm | ||
kernel | ||
kvm | ||
lguest | ||
lib | ||
math-emu | ||
mm | ||
oprofile | ||
pci | ||
platform | ||
power | ||
tools | ||
vdso | ||
video | ||
xen | ||
.gitignore | ||
Kbuild | ||
Kconfig | ||
Kconfig.cpu | ||
Kconfig.debug | ||
Makefile | ||
Makefile_32.cpu |