From: Oleksandr Tyshchenko <olekstysh@gmail.com> To: xen-devel@lists.xenproject.org Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>, julien.grall@arm.com, sstabellini@kernel.org Subject: [PATCH V3 5/5] xen/arm: Add early printk support for SCIFA compatible UARTs Date: Mon, 8 Apr 2019 13:14:49 +0300 [thread overview] Message-ID: <1554718489-11318-6-git-send-email-olekstysh@gmail.com> (raw) In-Reply-To: <1554718489-11318-1-git-send-email-olekstysh@gmail.com> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> This patch makes possible to use existing early prink code for Renesas "Stout" board based on R-Car H2 SoC (SCIFA). The "EARLY_PRINTK_VERSION" for that board should be 'A': CONFIG_EARLY_PRINTK=scif,0xe6c40000,A Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> CC: Julien Grall <julien.grall@arm.com> --- Changes in v3: - It was decided not to introduce new debug-scifa.inc for handling SCIFA interface, but to extend existing debug-scif.inc for handling both interfaces. This patch is a result of splitting an initial patch "xen/arm: Add SCIFA UART support for early printk" and only adds a support. --- xen/arch/arm/arm32/debug-scif.inc | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/xen/arch/arm/arm32/debug-scif.inc b/xen/arch/arm/arm32/debug-scif.inc index a8d2eae..94a18ea 100644 --- a/xen/arch/arm/arm32/debug-scif.inc +++ b/xen/arch/arm/arm32/debug-scif.inc @@ -1,7 +1,7 @@ /* * xen/arch/arm/arm32/debug-scif.inc * - * SCIF specific debug code + * SCIF(A) specific debug code * * Oleksandr Tyshchenko <oleksandr.tyshchenko@globallogic.com> * Copyright (C) 2014, Globallogic. @@ -22,10 +22,13 @@ #ifdef EARLY_PRINTK_VERSION_NONE #define STATUS_REG SCIF_SCFSR #define TX_FIFO_REG SCIF_SCFTDR +#elif EARLY_PRINTK_VERSION_A +#define STATUS_REG SCIFA_SCASSR +#define TX_FIFO_REG SCIFA_SCAFTDR #endif /* - * SCIF UART wait UART to be ready to transmit + * SCIF(A) UART wait UART to be ready to transmit * rb: register which contains the UART base address * rc: scratch register */ @@ -37,7 +40,7 @@ .endm /* - * SCIF UART transmit character + * SCIF(A) UART transmit character * rb: register which contains the UART base address * rt: register which contains the character to transmit */ -- 2.7.4 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
WARNING: multiple messages have this Message-ID (diff)
From: Oleksandr Tyshchenko <olekstysh@gmail.com> To: xen-devel@lists.xenproject.org Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>, julien.grall@arm.com, sstabellini@kernel.org Subject: [Xen-devel] [PATCH V3 5/5] xen/arm: Add early printk support for SCIFA compatible UARTs Date: Mon, 8 Apr 2019 13:14:49 +0300 [thread overview] Message-ID: <1554718489-11318-6-git-send-email-olekstysh@gmail.com> (raw) Message-ID: <20190408101449.etKgNwjIbP9CQ65JzcoQqgVPlLbz0J4WI9MJl1Km-PI@z> (raw) In-Reply-To: <1554718489-11318-1-git-send-email-olekstysh@gmail.com> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> This patch makes possible to use existing early prink code for Renesas "Stout" board based on R-Car H2 SoC (SCIFA). The "EARLY_PRINTK_VERSION" for that board should be 'A': CONFIG_EARLY_PRINTK=scif,0xe6c40000,A Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> CC: Julien Grall <julien.grall@arm.com> --- Changes in v3: - It was decided not to introduce new debug-scifa.inc for handling SCIFA interface, but to extend existing debug-scif.inc for handling both interfaces. This patch is a result of splitting an initial patch "xen/arm: Add SCIFA UART support for early printk" and only adds a support. --- xen/arch/arm/arm32/debug-scif.inc | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/xen/arch/arm/arm32/debug-scif.inc b/xen/arch/arm/arm32/debug-scif.inc index a8d2eae..94a18ea 100644 --- a/xen/arch/arm/arm32/debug-scif.inc +++ b/xen/arch/arm/arm32/debug-scif.inc @@ -1,7 +1,7 @@ /* * xen/arch/arm/arm32/debug-scif.inc * - * SCIF specific debug code + * SCIF(A) specific debug code * * Oleksandr Tyshchenko <oleksandr.tyshchenko@globallogic.com> * Copyright (C) 2014, Globallogic. @@ -22,10 +22,13 @@ #ifdef EARLY_PRINTK_VERSION_NONE #define STATUS_REG SCIF_SCFSR #define TX_FIFO_REG SCIF_SCFTDR +#elif EARLY_PRINTK_VERSION_A +#define STATUS_REG SCIFA_SCASSR +#define TX_FIFO_REG SCIFA_SCAFTDR #endif /* - * SCIF UART wait UART to be ready to transmit + * SCIF(A) UART wait UART to be ready to transmit * rb: register which contains the UART base address * rc: scratch register */ @@ -37,7 +40,7 @@ .endm /* - * SCIF UART transmit character + * SCIF(A) UART transmit character * rb: register which contains the UART base address * rt: register which contains the character to transmit */ -- 2.7.4 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
next prev parent reply other threads:[~2019-04-08 10:15 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-04-08 10:14 [PATCH V3 0/5] Renesas Stout board support (R-Car Gen2) Oleksandr Tyshchenko 2019-04-08 10:14 ` [Xen-devel] " Oleksandr Tyshchenko 2019-04-08 10:14 ` [PATCH V3 1/5] xen/arm: Clarify usage of earlyprintk for Lager board Oleksandr Tyshchenko 2019-04-08 10:14 ` [Xen-devel] " Oleksandr Tyshchenko 2019-04-08 10:14 ` [PATCH V3 2/5] xen/arm: drivers: scif: Extend driver to handle other interfaces Oleksandr Tyshchenko 2019-04-08 10:14 ` [Xen-devel] " Oleksandr Tyshchenko 2019-04-14 16:55 ` Julien Grall 2019-04-14 16:55 ` [Xen-devel] " Julien Grall 2019-04-15 11:30 ` Oleksandr 2019-04-15 11:30 ` [Xen-devel] " Oleksandr 2019-04-16 9:11 ` Julien Grall 2019-04-16 9:11 ` [Xen-devel] " Julien Grall 2019-04-16 13:26 ` Oleksandr 2019-04-16 13:26 ` [Xen-devel] " Oleksandr 2019-04-08 10:14 ` [PATCH V3 3/5] xen/arm: drivers: scif: Add support for SCIFA compatible UARTs Oleksandr Tyshchenko 2019-04-08 10:14 ` [Xen-devel] " Oleksandr Tyshchenko 2019-04-14 16:57 ` Julien Grall 2019-04-14 16:57 ` [Xen-devel] " Julien Grall 2019-04-08 10:14 ` [PATCH V3 4/5] xen/arm: Extend SCIF early prink code to handle other interfaces Oleksandr Tyshchenko 2019-04-08 10:14 ` [Xen-devel] " Oleksandr Tyshchenko 2019-04-14 17:48 ` Julien Grall 2019-04-14 17:48 ` [Xen-devel] " Julien Grall 2019-04-15 11:38 ` Oleksandr 2019-04-15 11:38 ` [Xen-devel] " Oleksandr 2019-04-08 10:14 ` Oleksandr Tyshchenko [this message] 2019-04-08 10:14 ` [Xen-devel] [PATCH V3 5/5] xen/arm: Add early printk support for SCIFA compatible UARTs Oleksandr Tyshchenko 2019-04-14 17:56 ` Julien Grall 2019-04-14 17:56 ` [Xen-devel] " Julien Grall 2019-04-15 11:43 ` Oleksandr 2019-04-15 11:43 ` [Xen-devel] " Oleksandr 2019-04-16 9:16 ` Julien Grall 2019-04-16 9:16 ` [Xen-devel] " Julien Grall
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