Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-tegra/include/mach/uncompress.h |
| 3 | * |
| 4 | * Copyright (C) 2010 Google, Inc. |
| 5 | * |
| 6 | * Author: |
| 7 | * Colin Cross <ccross@google.com> |
| 8 | * Erik Gilling <konkers@google.com> |
| 9 | * |
| 10 | * This software is licensed under the terms of the GNU General Public |
| 11 | * License version 2, as published by the Free Software Foundation, and |
| 12 | * may be copied, distributed, and modified under those terms. |
| 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 | */ |
| 20 | |
| 21 | #ifndef __MACH_TEGRA_UNCOMPRESS_H |
| 22 | #define __MACH_TEGRA_UNCOMPRESS_H |
| 23 | |
| 24 | #include <linux/types.h> |
| 25 | #include <linux/serial_reg.h> |
| 26 | |
| 27 | #include <mach/iomap.h> |
| 28 | |
| 29 | #if defined(CONFIG_TEGRA_DEBUG_UARTA) |
| 30 | #define DEBUG_UART_BASE TEGRA_UARTA_BASE |
| 31 | #elif defined(CONFIG_TEGRA_DEBUG_UARTB) |
| 32 | #define DEBUG_UART_BASE TEGRA_UARTB_BASE |
| 33 | #elif defined(CONFIG_TEGRA_DEBUG_UARTC) |
| 34 | #define DEBUG_UART_BASE TEGRA_UARTC_BASE |
| 35 | #elif defined(CONFIG_TEGRA_DEBUG_UARTD) |
| 36 | #define DEBUG_UART_BASE TEGRA_UARTD_BASE |
| 37 | #elif defined(CONFIG_TEGRA_DEBUG_UARTE) |
| 38 | #define DEBUG_UART_BASE TEGRA_UARTE_BASE |
| 39 | #else |
| 40 | #define DEBUG_UART_BASE NULL |
| 41 | #endif |
| 42 | |
| 43 | static void putc(int c) |
| 44 | { |
| 45 | volatile u8 *uart = (volatile u8 *)DEBUG_UART_BASE; |
| 46 | int shift = 2; |
| 47 | |
| 48 | if (uart == NULL) |
| 49 | return; |
| 50 | |
| 51 | while (!(uart[UART_LSR << shift] & UART_LSR_THRE)) |
| 52 | barrier(); |
| 53 | uart[UART_TX << shift] = c; |
| 54 | } |
| 55 | |
| 56 | static inline void flush(void) |
| 57 | { |
| 58 | } |
| 59 | |
| 60 | static inline void arch_decomp_setup(void) |
| 61 | { |
| 62 | volatile u8 *uart = (volatile u8 *)DEBUG_UART_BASE; |
| 63 | int shift = 2; |
| 64 | |
| 65 | if (uart == NULL) |
| 66 | return; |
| 67 | |
| 68 | uart[UART_LCR << shift] |= UART_LCR_DLAB; |
| 69 | uart[UART_DLL << shift] = 0x75; |
| 70 | uart[UART_DLM << shift] = 0x0; |
| 71 | uart[UART_LCR << shift] = 3; |
| 72 | } |
| 73 | |
| 74 | static inline void arch_decomp_wdog(void) |
| 75 | { |
| 76 | } |
| 77 | |
| 78 | #endif |