61 lines
2 KiB
Diff
61 lines
2 KiB
Diff
From 993160b530efe9b0d3f0bc4551954a4c3344beeb Mon Sep 17 00:00:00 2001
|
|
From: John Crispin <blogic@openwrt.org>
|
|
Date: Sat, 20 Aug 2011 18:55:13 +0200
|
|
Subject: [PATCH 11/73] MIPS: lantiq: fix early printk
|
|
|
|
The code was using a 32bit write operations in the early_printk code. This
|
|
resulted in 3 zero bytes also being written to the serial port. This patch
|
|
changes the memory access to 8bit.
|
|
|
|
Signed-off-by: Thomas Langer <thomas.langer@lantiq.com>
|
|
Signed-off-by: John Crispin <blogic@openwrt.org>
|
|
---
|
|
.../mips/include/asm/mach-lantiq/xway/lantiq_soc.h | 6 ++++++
|
|
arch/mips/lantiq/early_printk.c | 14 ++++++++------
|
|
2 files changed, 14 insertions(+), 6 deletions(-)
|
|
|
|
--- a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
|
|
+++ b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
|
|
@@ -34,6 +34,12 @@
|
|
#define LTQ_ASC1_BASE_ADDR 0x1E100C00
|
|
#define LTQ_ASC_SIZE 0x400
|
|
|
|
+/*
|
|
+ * during early_printk no ioremap is possible
|
|
+ * lets use KSEG1 instead
|
|
+ */
|
|
+#define LTQ_EARLY_ASC KSEG1ADDR(LTQ_ASC1_BASE_ADDR)
|
|
+
|
|
/* RCU - reset control unit */
|
|
#define LTQ_RCU_BASE_ADDR 0x1F203000
|
|
#define LTQ_RCU_SIZE 0x1000
|
|
--- a/arch/mips/lantiq/early_printk.c
|
|
+++ b/arch/mips/lantiq/early_printk.c
|
|
@@ -12,11 +12,13 @@
|
|
#include <lantiq.h>
|
|
#include <lantiq_soc.h>
|
|
|
|
-/* no ioremap possible at this early stage, lets use KSEG1 instead */
|
|
-#define LTQ_ASC_BASE KSEG1ADDR(LTQ_ASC1_BASE_ADDR)
|
|
#define ASC_BUF 1024
|
|
-#define LTQ_ASC_FSTAT ((u32 *)(LTQ_ASC_BASE + 0x0048))
|
|
-#define LTQ_ASC_TBUF ((u32 *)(LTQ_ASC_BASE + 0x0020))
|
|
+#define LTQ_ASC_FSTAT ((u32 *)(LTQ_EARLY_ASC + 0x0048))
|
|
+#ifdef __BIG_ENDIAN
|
|
+#define LTQ_ASC_TBUF ((u32 *)(LTQ_EARLY_ASC + 0x0020 + 3))
|
|
+#else
|
|
+#define LTQ_ASC_TBUF ((u32 *)(LTQ_EARLY_ASC + 0x0020))
|
|
+#endif
|
|
#define TXMASK 0x3F00
|
|
#define TXOFFSET 8
|
|
|
|
@@ -27,7 +29,7 @@ void prom_putchar(char c)
|
|
local_irq_save(flags);
|
|
do { } while ((ltq_r32(LTQ_ASC_FSTAT) & TXMASK) >> TXOFFSET);
|
|
if (c == '\n')
|
|
- ltq_w32('\r', LTQ_ASC_TBUF);
|
|
- ltq_w32(c, LTQ_ASC_TBUF);
|
|
+ ltq_w8('\r', LTQ_ASC_TBUF);
|
|
+ ltq_w8(c, LTQ_ASC_TBUF);
|
|
local_irq_restore(flags);
|
|
}
|