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Re: [PATCH V3 7/10] MIPS: ralink: adds early_printk support

To: John Crispin <blogic@openwrt.org>
Subject: Re: [PATCH V3 7/10] MIPS: ralink: adds early_printk support
From: Sergei Shtylyov <sshtylyov@mvista.com>
Date: Mon, 28 Jan 2013 16:16:39 +0400
Cc: Ralf Baechle <ralf@linux-mips.org>, linux-mips@linux-mips.org
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Hello.

On 28-01-2013 11:40, John Crispin wrote:

Add the code needed to make early printk work.

Signed-off-by: John Crispin <blogic@openwrt.org>
---
  arch/mips/ralink/early_printk.c |   45 +++++++++++++++++++++++++++++++++++++++
  1 file changed, 45 insertions(+)
  create mode 100644 arch/mips/ralink/early_printk.c

diff --git a/arch/mips/ralink/early_printk.c b/arch/mips/ralink/early_printk.c
new file mode 100644
index 0000000..68aabb9
--- /dev/null
+++ b/arch/mips/ralink/early_printk.c
@@ -0,0 +1,45 @@
+/*
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License version 2 as published
+ *  by the Free Software Foundation.
+ *
+ *  Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
+ */
+
+#include <linux/io.h>
+#include <linux/serial_reg.h>
+
+#include <asm/addrspace.h>
+
+/* UART registers */

   this comment refers to the register #defines below, why it is here?

+#define EARLY_UART_BASE         0x10000c00
+
+#define UART_REG_RX             0x00
+#define UART_REG_TX             0x04
+#define UART_REG_IER            0x08
+#define UART_REG_IIR            0x0c
+#define UART_REG_FCR            0x10
+#define UART_REG_LCR            0x14
+#define UART_REG_MCR            0x18
+#define UART_REG_LSR            0x1c

WBR, Sergei


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