[PATCH 0/4] xen: improve console outputs

This patch series improves the behavior and functionality of console output on Xen:

Patch#1: allow for U-Boot banner Patch#2-4: enable DEBUG_UART (or early printf)

AKASHI Takahiro (4): serial: serial_xen: print U-Boot banner and others arch: arm/xen: add putc() for debugging xen: add definitions for console_io serial: serial_xen: add DEBUG_UART support

arch/arm/include/asm/xen/hypercall.h | 6 ++++++ drivers/serial/Kconfig | 14 +++++++++++--- drivers/serial/serial_xen.c | 22 ++++++++++++++++++++-- include/xen/interface/xen.h | 6 ++++++ 4 files changed, 43 insertions(+), 5 deletions(-)