On 08.11.2016 15:30, Julien Grall wrote:
Hello Iurii,
Dirk (in CC) sent a similar patch few months ago to add support for
this board (see [1]).
I didn't ack the patch back then because I wanted to see documentation
on the wiki to bring up Xen on this board (see [2] for the
requirements). I didn't see any follow-up since then for this board.
Can one of you write a documentation for this board
Yes, that would be nice.
As mentioned, I couldn't find an 'easy' way to load Xen without
modifying the firmware (U-Boot or ATF) or using a JTAG debugger.
Therefore I hesitated to write that documentation.
Maybe Iurii found an easier, more user compatible way?
Best regards
Dirk
and take
"ownership" on this board?
Regards,
[1]
https://lists.xenproject.org/archives/html/xen-devel/2016-07/msg00315.html
[2]
https://lists.xenproject.org/archives/html/xen-devel/2016-07/msg00130.html
On 08/11/2016 14:20, Iurii Mykhalskyi wrote:
From: Iurii Konovalenko <iurii.konovale...@globallogic.com>
Add support for the "Salvator-X" development board based on R-Car H3
SoC
which has SCIF compatible UART.
Signed-off-by: Iurii Konovalenko <iurii.konovale...@globallogic.com>
Signed-off-by: Iurii Mykhalskyi <iurii.mykhals...@globallogic.com>
---
xen/arch/arm/Rules.mk | 1 +
xen/arch/arm/arm64/debug-scif.inc | 51
+++++++++++++++++++++++++++++++++++++++
2 files changed, 52 insertions(+)
create mode 100644 xen/arch/arm/arm64/debug-scif.inc
diff --git a/xen/arch/arm/Rules.mk b/xen/arch/arm/Rules.mk
index 569a0ba..7989634 100644
--- a/xen/arch/arm/Rules.mk
+++ b/xen/arch/arm/Rules.mk
@@ -34,6 +34,7 @@ EARLY_PRINTK_fastmodel :=
pl011,0x1c090000,115200
EARLY_PRINTK_exynos5250 := exynos4210,0x12c20000
EARLY_PRINTK_juno := pl011,0x7ff80000
EARLY_PRINTK_lager := scif,0xe6e60000
+EARLY_PRINTK_salvator := scif,0xe6e88000
EARLY_PRINTK_midway := pl011,0xfff36000
EARLY_PRINTK_omap5432 := 8250,0x48020000,2
EARLY_PRINTK_seattle := pl011,0xe1010000
diff --git a/xen/arch/arm/arm64/debug-scif.inc
b/xen/arch/arm/arm64/debug-scif.inc
new file mode 100644
index 0000000..1f4d657
--- /dev/null
+++ b/xen/arch/arm/arm64/debug-scif.inc
@@ -0,0 +1,51 @@
+/*
+ * xen/arch/arm/arm64/debug-scif.inc
+ *
+ * SCIF specific debug code
+ *
+ * Oleksandr Tyshchenko <oleksandr.tyshche...@globallogic.com>
+ * Iurii Konovalenko <iurii.konovale...@globallogic.com>
+ * Iurii Mykhalskyi <iurii.mykhals...@globallogic.com>
+ * Copyright (C) 2014-2016, Globallogic.
+ *
+ * This program is free software; you can redistribute it and/or
modify
+ * it under the terms of the GNU General Public License as
published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <asm/scif-uart.h>
+
+/* SCIF UART wait UART to be ready to transmit
+ * rb: register which contains the UART base address
+ * rc: scratch register
+ */
+.macro early_uart_ready xb c
+1:
+ ldrh w\c, [\xb, #SCIF_SCFSR] /* <- SCFSR (status
register) */
+ tst w\c, #SCFSR_TDFE /* Check TDFE bit */
+ beq 1b /* Wait for the UART to be
ready */
+.endm
+
+/* SCIF UART transmit character
+ * rb: register which contains the UART base address
+ * rt: register which contains the character to transmit
+ */
+.macro early_uart_transmit xb wt
+ strb \wt, [\xb, #SCIF_SCFTDR] /* ->
SCFTDR (data register) */
+ ldrh \wt, [\xb, #SCIF_SCFSR] /* <-
SCFSR (status register) */
+ and \wt, \wt, #(~(SCFSR_TEND | SCFSR_TDFE)) /* Clear
TEND and TDFE bits */
+ strh \wt, [\xb, #SCIF_SCFSR] /* ->
SCFSR (status register) */
+.endm
+
+/*
+ * Local variables:
+ * mode: ASM
+ * indent-tabs-mode: nil
+ * End:
+ */
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