[U-Boot] [PATCH v2] microblaze: usable uart16550 for big endian systems
Stephan Linz
linz at li-pro.net
Thu Nov 24 23:32:52 CET 2011
As a result of the commit 6833260 the uart16550 driver
is broken for Microblaze big endian systems, because of
the missing 3 byte offset. Other than as described, not
all U-Boot BSP will treat properly the 3 byte offset.
This why prefer to mask out the 3 byte offset in general
and setup correct _REG_SIZE value depending on edianess.
Signed-off-by: Stephan Linz <linz at li-pro.net>
---
v2: Mask out 3 byte offset
Set correct _REG_SIZE values for big/little endianess
---
include/configs/microblaze-generic.h | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/include/configs/microblaze-generic.h b/include/configs/microblaze-generic.h
index 6b3fd76..03a6f5a 100644
--- a/include/configs/microblaze-generic.h
+++ b/include/configs/microblaze-generic.h
@@ -41,10 +41,14 @@
#elif XILINX_UART16550_BASEADDR
# define CONFIG_SYS_NS16550 1
# define CONFIG_SYS_NS16550_SERIAL
-# define CONFIG_SYS_NS16550_REG_SIZE -4
+# if defined(__MICROBLAZEEL__)
+# define CONFIG_SYS_NS16550_REG_SIZE -4
+# else
+# define CONFIG_SYS_NS16550_REG_SIZE 4
+# endif
# define CONFIG_CONS_INDEX 1
# define CONFIG_SYS_NS16550_COM1 \
- (XILINX_UART16550_BASEADDR + 0x1000)
+ ((XILINX_UART16550_BASEADDR & ~0xF) + 0x1000)
# define CONFIG_SYS_NS16550_CLK XILINX_UART16550_CLOCK_HZ
# define CONFIG_BAUDRATE 115200
--
1.7.0.4
More information about the U-Boot
mailing list