From: Julien Grall <julien.grall@linaro.org>
To: Julien Grall <julien.grall@linaro.org>
Cc: stefano.stabellini@eu.citrix.com, tim@xen.org,
ian.campbell@citrix.com, patches@linaro.org,
xen-devel@lists.xen.org
Subject: Re: [PATCH v3 0/7] Emulate virtual UART for DOM0 and some UART clean up
Date: Thu, 01 Aug 2013 17:12:33 +0100 [thread overview]
Message-ID: <51FA88F1.4000707@linaro.org> (raw)
In-Reply-To: <1375373372-15009-1-git-send-email-julien.grall@linaro.org>
On 08/01/2013 05:09 PM, Julien Grall wrote:
> 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
>
I forgot to add this patch in the series:
http://patches.linaro.org/18710/. It didn't change since the previous
version.
--
Julien
next prev parent reply other threads:[~2013-08-01 16:12 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-01 16:09 [PATCH v3 0/7] Emulate virtual UART for DOM0 and some UART clean up Julien Grall
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 ` Julien Grall [this message]
2013-08-02 16:17 ` [PATCH v3 0/7] Emulate virtual UART for DOM0 and some UART clean up 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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