linux-kernel - [PATCH 1/3] ARM: zynq: Move early printk virtual address to vmalloc area

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Date:	Mon, 15 Feb 2016 17:05:17 +0100
From:	Michal Simek <michal.simek@...inx.com>
To:	linux-arm-kernel@...ts.infradead.org,
	Arnd Bergmann <arnd@...db.de>,
	Nicolas Pitre <nicolas.pitre@...aro.org>
Cc:	Sören Brinkmann <soren.brinkmann@...inx.com>,
	monstr@...str.eu, Arun Chandran <achandran@...sta.com>,
	Steffen Trumtrar <s.trumtrar@...gutronix.de>,
	linux-kernel@...r.kernel.org,
	Peter Crosthwaite <peter.crosthwaite@...inx.com>,
	Russell King <linux@....linux.org.uk>,
	Rob Herring <robherring2@...il.com>,
	Josh Cartwright <josh.cartwright@...com>
Subject: [PATCH 1/3] ARM: zynq: Move early printk virtual address to vmalloc area

The patch
"ARM: 8432/1: move VMALLOC_END from 0xff000000 to 0xff800000"
(sha1: 6ff0966052c46efb53980b8a1add2e7b49c9f560)
has moved also start of VMALLOC area because size didn't change.
That's why origin location of vmalloc was
   vmalloc : 0xf0000000 - 0xff000000   ( 240 MB)
and now is
   vmalloc : 0xf0800000 - 0xff800000   ( 240 MB)

That's why uart virtual addresses need to be changed to reflect this new
memory setup. Starting address should be vmalloc start address.

Signed-off-by: Michal Simek <michal.simek@...inx.com>
---

 arch/arm/include/debug/zynq.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/include/debug/zynq.S b/arch/arm/include/debug/zynq.S
index de86b9247564..060cb5b49bfd 100644
--- a/arch/arm/include/debug/zynq.S
+++ b/arch/arm/include/debug/zynq.S
@@ -20,9 +20,9 @@
 #define UART_SR_TXEMPTY		0x00000008	/* TX FIFO empty */
 
 #define UART0_PHYS		0xE0000000
-#define UART0_VIRT		0xF0000000
+#define UART0_VIRT		0xF0800000
 #define UART1_PHYS		0xE0001000
-#define UART1_VIRT		0xF0001000
+#define UART1_VIRT		0xF0801000
 
 #if IS_ENABLED(CONFIG_DEBUG_ZYNQ_UART1)
 # define LL_UART_PADDR		UART1_PHYS
-- 
1.9.1