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-rw-r--r--target/linux/lantiq/patches-3.3/0008-MIPS-lantiq-fix-early-printk.patch68
1 files changed, 68 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.3/0008-MIPS-lantiq-fix-early-printk.patch b/target/linux/lantiq/patches-3.3/0008-MIPS-lantiq-fix-early-printk.patch
new file mode 100644
index 0000000000..e994dc5f8c
--- /dev/null
+++ b/target/linux/lantiq/patches-3.3/0008-MIPS-lantiq-fix-early-printk.patch
@@ -0,0 +1,68 @@
+From 4e06715641d992bb9d94e0b37d22241b9ec074c6 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Sat, 20 Aug 2011 18:55:13 +0200
+Subject: [PATCH 08/70] 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(-)
+
+diff --git a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
+index 87f6d24..e31f52d 100644
+--- 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
+diff --git a/arch/mips/lantiq/early_printk.c b/arch/mips/lantiq/early_printk.c
+index 972e05f..5089075 100644
+--- 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);
+ }
+--
+1.7.9.1
+