diff options
| author | Jayachandran C <jchandra@broadcom.com> | 2013-06-10 06:33:25 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2013-06-13 17:46:41 +0200 |
| commit | d6a5078459d95137d8d620787d1099a3016932a9 (patch) | |
| tree | 41537019731d2b6375c73ebcfb79bbbe999237f0 /arch/mips | |
| parent | 5649d37c2b23ad6545709c976b9abbfa8d5f4e11 (diff) | |
MIPS: boot: Fixes for compressed/uart-16550.c
Fix uart-16550.c for adding XLR/XLP support, changes are:
* Make register read/write use volatile pointers
* Support 32 bit IO read/write
* Increase timeout in waiting for UART LSR
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5416/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/boot/compressed/uart-16550.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/mips/boot/compressed/uart-16550.c b/arch/mips/boot/compressed/uart-16550.c index 1c7b739b6a1d..90ae4400c40c 100644 --- a/arch/mips/boot/compressed/uart-16550.c +++ b/arch/mips/boot/compressed/uart-16550.c @@ -23,23 +23,27 @@ #define PORT(offset) (UART0_BASE + (4 * offset)) #endif +#ifndef IOTYPE +#define IOTYPE char +#endif + #ifndef PORT #error please define the serial port address for your own machine #endif static inline unsigned int serial_in(int offset) { - return *((char *)PORT(offset)); + return *((volatile IOTYPE *)PORT(offset)) & 0xFF; } static inline void serial_out(int offset, int value) { - *((char *)PORT(offset)) = value; + *((volatile IOTYPE *)PORT(offset)) = value & 0xFF; } void putc(char c) { - int timeout = 1024; + int timeout = 1000000; while (((serial_in(UART_LSR) & UART_LSR_THRE) == 0) && (timeout-- > 0)) ; |