| Sascha Hauer | bb6d8c8 | 2006-06-19 15:27:53 +0100 | [diff] [blame] | 1 | /* |
| 2 | * include/asm-arm/arch-netx/uncompress.h |
| 3 | * |
| 4 | * Copyright (C) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 |
| 8 | * as published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * The following code assumes the serial port has already been |
| 22 | * initialized by the bootloader. We search for the first enabled |
| 23 | * port in the most probable order. If you didn't setup a port in |
| 24 | * your bootloader then nothing will appear (which might be desired). |
| 25 | * |
| 26 | * This does not append a newline |
| 27 | */ |
| 28 | |
| 29 | #define REG(x) (*(volatile unsigned long *)(x)) |
| 30 | |
| 31 | #define UART1_BASE 0x100a00 |
| 32 | #define UART2_BASE 0x100a80 |
| 33 | |
| 34 | #define UART_DR 0x0 |
| 35 | |
| 36 | #define UART_CR 0x14 |
| 37 | #define CR_UART_EN (1<<0) |
| 38 | |
| 39 | #define UART_FR 0x18 |
| 40 | #define FR_BUSY (1<<3) |
| 41 | #define FR_TXFF (1<<5) |
| 42 | |
| 43 | static void putc(char c) |
| 44 | { |
| 45 | unsigned long base; |
| 46 | |
| 47 | if (REG(UART1_BASE + UART_CR) & CR_UART_EN) |
| 48 | base = UART1_BASE; |
| 49 | else if (REG(UART2_BASE + UART_CR) & CR_UART_EN) |
| 50 | base = UART2_BASE; |
| 51 | else |
| 52 | return; |
| 53 | |
| 54 | while (REG(base + UART_FR) & FR_TXFF); |
| 55 | REG(base + UART_DR) = c; |
| 56 | } |
| 57 | |
| 58 | static inline void flush(void) |
| 59 | { |
| 60 | unsigned long base; |
| 61 | |
| 62 | if (REG(UART1_BASE + UART_CR) & CR_UART_EN) |
| 63 | base = UART1_BASE; |
| 64 | else if (REG(UART2_BASE + UART_CR) & CR_UART_EN) |
| 65 | base = UART2_BASE; |
| 66 | else |
| 67 | return; |
| 68 | |
| 69 | while (REG(base + UART_FR) & FR_BUSY); |
| 70 | } |
| 71 | |
| 72 | /* |
| 73 | * nothing to do |
| 74 | */ |
| 75 | #define arch_decomp_setup() |
| 76 | #define arch_decomp_wdog() |