[Xen-changelog] [xen staging] xen/arm: Add early printk support for SCIFA compatible UARTs

[patchbot@xxxxxxx]

commit ca135a4863ffeedca451651835fcd9aef6c872ff
Author:     Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
AuthorDate: Thu May 2 20:00:22 2019 +0300
Commit:     Julien Grall <julien.grall@xxxxxxx>
CommitDate: Thu May 16 16:44:08 2019 +0100

    xen/arm: Add early printk support for SCIFA compatible UARTs
    
    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@xxxxxxxx>
    Acked-by: Julien Grall <julien.grall@xxxxxxx>
---
 xen/arch/arm/arm32/debug-scif.inc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/xen/arch/arm/arm32/debug-scif.inc 
b/xen/arch/arm/arm32/debug-scif.inc
index 6f60e015c0..3f01c909c2 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@xxxxxxxxxxxxxxx>
  * Copyright (C) 2014, Globallogic.
@@ -22,6 +22,9 @@
 #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
 
 /*
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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