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authorLars-Peter Clausen <lars@metafoo.de>2009-11-05 23:04:42 +0100
committerLars-Peter Clausen <lars@metafoo.de>2009-12-06 10:16:52 +0100
commitaa5f3d60c3934508819b0acf9aaef061ff3db4a6 (patch)
treeb30e0a9ec01a759a8a710b1ac448e2eae815e1b2 /arch
parent918c165eec82a9a28175e539e86390eb6430d709 (diff)
S3C: Allow to completly disable low-level messages
In some cases it is desirable to completly disable low-level messages. For example if you have no uart available for a serial console. With this patch it is possible to disable low-level messages by setting CONFIG_S3C_LOWLEVEL_UART_PORT to less then zero. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/boot/compressed/head.S2
-rw-r--r--arch/arm/plat-s3c/include/plat/uncompress.h19
2 files changed, 16 insertions, 5 deletions
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index fa6fbf45cf3..4f0708b83ed 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -58,7 +58,7 @@
add \rb, \rb, #0x00010000 @ Ser1
#endif
.endm
-#elif defined(CONFIG_ARCH_S3C2410)
+#elif defined(CONFIG_ARCH_S3C2410) && CONFIG_S3C_LOWLEVEL_UART_PORT >= 0
.macro loadsp, rb
mov \rb, #0x50000000
add \rb, \rb, #0x4000 * CONFIG_S3C_LOWLEVEL_UART_PORT
diff --git a/arch/arm/plat-s3c/include/plat/uncompress.h b/arch/arm/plat-s3c/include/plat/uncompress.h
index dc66a477f62..8e02073e307 100644
--- a/arch/arm/plat-s3c/include/plat/uncompress.h
+++ b/arch/arm/plat-s3c/include/plat/uncompress.h
@@ -37,6 +37,8 @@ static void arch_detect_cpu(void);
/* how many bytes we allow into the FIFO at a time in FIFO mode */
#define FIFO_MAX (14)
+#if CONFIG_S3C_LOWLEVEL_UART_PORT >= 0
+
#define uart_base S3C_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT)
static __inline__ void
@@ -86,10 +88,6 @@ static void putc(int ch)
uart_wr(S3C2410_UTXH, ch);
}
-static inline void flush(void)
-{
-}
-
#define __raw_writel(d, ad) \
do { \
*((volatile unsigned int __force *)(ad)) = (d); \
@@ -163,6 +161,19 @@ static inline void arch_enable_uart_fifo(void)
#define arch_enable_uart_fifo() do { } while(0)
#endif
+#else
+static inline void putc(int ch)
+{
+}
+
+#define arch_enable_uart_fifo() do { } while(0)
+#define arch_decomp_wdog_start()
+#define arch_decomp_wdog()
+#endif
+
+static inline void flush(void)
+{
+}
static void
arch_decomp_setup(void)