From: Julien Grall <julien.grall@linaro.org>
To: xen-devel@lists.xen.org
Cc: patches@linaro.org, tim@xen.org, ian.campbell@citrix.com,
Julien Grall <julien.grall@linaro.org>,
stefano.stabellini@eu.citrix.com
Subject: [PATCH v3 0/7] Emulate virtual UART for DOM0 and some UART clean up
Date: Thu, 1 Aug 2013 17:09:25 +0100 [thread overview]
Message-ID: <1375373372-15009-1-git-send-email-julien.grall@linaro.org> (raw)
Hi,
This third version of this patch series. It follows the thread
http://patches.linaro.org/18358/ on Linux mailing list.
In some configuration, the kernel can use hardcoded code to access to the
UART (for instance early printk). If Xen has stolen the UART for its own use,
DOM0 will abort because Xen has not mapped to DOM0 the UART memory.
With this patch series, Xen will "replace" the real UART by a basic virtual
UART for DOM0.
For the moment, this patch series is not able to cooperate with early printk
in guest kernel.
This patch series also contains clean up for the pl011 and exynos4210 drivers.
For all the changes see the different patches.
Julien Grall (7):
pl011: Move registers' definition in a separate file
xen/arm: Use define instead of hardcoded value in debug-pl011
xen/arm: New callback in uart_driver to retrieve serial information
xen/arm: Implement a virtual UART
exynos4210: rename UTRSTAT_TX_EMPTY in UTRSTAT_TXFE
exynos4210: Implement vuart_info callback
pl011: Implement vuart_info callback
xen/arch/arm/Makefile | 2 +-
xen/arch/arm/arm32/debug-exynos4210.inc | 2 +-
xen/arch/arm/arm32/debug-pl011.inc | 18 ++--
xen/arch/arm/domain.c | 12 ++-
xen/arch/arm/io.c | 2 +-
xen/arch/arm/io.h | 2 +-
xen/arch/arm/vpl011.c | 152 -------------------------------
xen/arch/arm/vpl011.h | 35 -------
xen/arch/arm/vuart.c | 150 ++++++++++++++++++++++++++++++
xen/arch/arm/vuart.h | 35 +++++++
xen/drivers/char/exynos4210-uart.c | 15 +++
xen/drivers/char/pl011.c | 63 ++++---------
xen/drivers/char/serial.c | 8 ++
xen/include/asm-arm/domain.h | 14 +--
xen/include/asm-arm/exynos4210-uart.h | 3 +-
xen/include/asm-arm/pl011-uart.h | 81 ++++++++++++++++
xen/include/xen/serial.h | 13 +++
17 files changed, 350 insertions(+), 257 deletions(-)
delete mode 100644 xen/arch/arm/vpl011.c
delete mode 100644 xen/arch/arm/vpl011.h
create mode 100644 xen/arch/arm/vuart.c
create mode 100644 xen/arch/arm/vuart.h
create mode 100644 xen/include/asm-arm/pl011-uart.h
--
1.7.10.4
next reply other threads:[~2013-08-01 16:09 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-01 16:09 Julien Grall [this message]
2013-08-01 16:09 ` [PATCH v3 1/7] pl011: Move registers' definition in a separate file Julien Grall
2013-08-01 16:09 ` [PATCH v3 2/7] xen/arm: Use define instead of hardcoded value in debug-pl011 Julien Grall
2013-08-01 16:09 ` [PATCH v3 3/7] xen/arm: New callback in uart_driver to retrieve serial information Julien Grall
2013-08-02 10:31 ` Tim Deegan
2013-08-06 17:45 ` Keir Fraser
2013-08-01 16:09 ` [PATCH v3 4/7] xen/arm: Implement a virtual UART Julien Grall
2013-08-02 10:34 ` Tim Deegan
2013-08-01 16:09 ` [PATCH v3 5/7] exynos4210: rename UTRSTAT_TX_EMPTY in UTRSTAT_TXFE Julien Grall
2013-08-01 16:09 ` [PATCH v3 6/7] exynos4210: Implement vuart_info callback Julien Grall
2013-08-01 16:09 ` [PATCH v3 7/7] pl011: " Julien Grall
2013-08-01 16:12 ` [PATCH v3 0/7] Emulate virtual UART for DOM0 and some UART clean up Julien Grall
2013-08-02 16:17 ` Ian Campbell
2013-08-05 9:27 ` Ian Campbell
2013-08-05 15:08 ` Ian Campbell
2013-08-06 17:10 ` Julien Grall
2013-08-08 12:16 ` Ian Campbell
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