git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| f30c2269 | 2 | * linux/include/asm-arm/arch-sa1100/uncompress.h |
| 1da177e4 LT |
3 | * |
| 4 | * (C) 1999 Nicolas Pitre <nico@cam.org> | |
| 5 | * | |
| 6 | * Reorganised to be machine independent. | |
| 7 | */ | |
| 8 | ||
| 9 | #include "hardware.h" | |
| 10 | ||
| 11 | /* | |
| 12 | * The following code assumes the serial port has already been | |
| 13 | * initialized by the bootloader. We search for the first enabled | |
| 14 | * port in the most probable order. If you didn't setup a port in | |
| 15 | * your bootloader then nothing will appear (which might be desired). | |
| 16 | */ | |
| 17 | ||
| 18 | #define UART(x) (*(volatile unsigned long *)(serial_port + (x))) | |
| 19 | ||
| a081568d | 20 | static void putc(int c) |
| 1da177e4 LT |
21 | { |
| 22 | unsigned long serial_port; | |
| 23 | ||
| 24 | do { | |
| 25 | serial_port = _Ser3UTCR0; | |
| 26 | if (UART(UTCR3) & UTCR3_TXE) break; | |
| 27 | serial_port = _Ser1UTCR0; | |
| 28 | if (UART(UTCR3) & UTCR3_TXE) break; | |
| 29 | serial_port = _Ser2UTCR0; | |
| 30 | if (UART(UTCR3) & UTCR3_TXE) break; | |
| 31 | return; | |
| 32 | } while (0); | |
| 33 | ||
| a081568d RK |
34 | /* wait for space in the UART's transmitter */ |
| 35 | while (!(UART(UTSR1) & UTSR1_TNF)) | |
| 36 | barrier(); | |
| 1da177e4 | 37 | |
| a081568d RK |
38 | /* send the character out. */ |
| 39 | UART(UTDR) = c; | |
| 40 | } | |
| 1da177e4 | 41 | |
| a081568d RK |
42 | static inline void flush(void) |
| 43 | { | |
| 1da177e4 LT |
44 | } |
| 45 | ||
| 46 | /* | |
| 47 | * Nothing to do for these | |
| 48 | */ | |
| 49 | #define arch_decomp_setup() | |
| 50 | #define arch_decomp_wdog() |