| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * arch/arm/mach-imxads/include/mach/uncompress.h |
| 3 | * |
| 4 | * |
| 5 | * |
| 6 | * Copyright (C) 1999 ARM Limited |
| 7 | * Copyright (C) Shane Nay (shane@minirl.com) |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #define UART(x) (*(volatile unsigned long *)(serial_port + (x))) |
| 25 | |
| 26 | #define UART1_BASE 0x206000 |
| 27 | #define UART2_BASE 0x207000 |
| 28 | #define USR2 0x98 |
| 29 | #define USR2_TXFE (1<<14) |
| 30 | #define TXR 0x40 |
| 31 | #define UCR1 0x80 |
| 32 | #define UCR1_UARTEN 1 |
| 33 | |
| 34 | /* |
| 35 | * The following code assumes the serial port has already been |
| 36 | * initialized by the bootloader. We search for the first enabled |
| 37 | * port in the most probable order. If you didn't setup a port in |
| 38 | * your bootloader then nothing will appear (which might be desired). |
| 39 | * |
| 40 | * This does not append a newline |
| 41 | */ |
| 42 | static void putc(int c) |
| 43 | { |
| 44 | unsigned long serial_port; |
| 45 | |
| 46 | do { |
| 47 | serial_port = UART1_BASE; |
| 48 | if ( UART(UCR1) & UCR1_UARTEN ) |
| 49 | break; |
| 50 | serial_port = UART2_BASE; |
| 51 | if ( UART(UCR1) & UCR1_UARTEN ) |
| 52 | break; |
| 53 | return; |
| 54 | } while(0); |
| 55 | |
| 56 | while (!(UART(USR2) & USR2_TXFE)) |
| 57 | barrier(); |
| 58 | |
| 59 | UART(TXR) = c; |
| 60 | } |
| 61 | |
| 62 | static inline void flush(void) |
| 63 | { |
| 64 | } |
| 65 | |
| 66 | /* |
| 67 | * nothing to do |
| 68 | */ |
| 69 | #define arch_decomp_setup() |
| 70 | |
| 71 | #define arch_decomp_wdog() |