| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * include/asm-arm/arch-ixp4xx/uncompress.h |
| 3 | * |
| 4 | * Copyright (C) 2002 Intel Corporation. |
| 5 | * Copyright (C) 2003-2004 MontaVista Software, Inc. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #ifndef _ARCH_UNCOMPRESS_H_ |
| 14 | #define _ARCH_UNCOMPRESS_H_ |
| 15 | |
| 16 | #include <asm/hardware.h> |
| 17 | #include <asm/mach-types.h> |
| 18 | #include <linux/serial_reg.h> |
| 19 | |
| 20 | #define TX_DONE (UART_LSR_TEMT|UART_LSR_THRE) |
| 21 | |
| 22 | static volatile u32* uart_base; |
| 23 | |
| 24 | static __inline__ void putc(char c) |
| 25 | { |
| 26 | /* Check THRE and TEMT bits before we transmit the character. |
| 27 | */ |
| 28 | while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE); |
| 29 | *uart_base = c; |
| 30 | } |
| 31 | |
| 32 | /* |
| 33 | * This does not append a newline |
| 34 | */ |
| 35 | static void putstr(const char *s) |
| 36 | { |
| 37 | while (*s) |
| 38 | { |
| 39 | putc(*s); |
| 40 | if (*s == '\n') |
| 41 | putc('\r'); |
| 42 | s++; |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | static __inline__ void __arch_decomp_setup(unsigned long arch_id) |
| 47 | { |
| 48 | /* |
| 49 | * Coyote and gtwx5715 only have UART2 connected |
| 50 | */ |
| 51 | if (machine_is_adi_coyote() || machine_is_gtwx5715()) |
| 52 | uart_base = (volatile u32*) IXP4XX_UART2_BASE_PHYS; |
| 53 | else |
| 54 | uart_base = (volatile u32*) IXP4XX_UART1_BASE_PHYS; |
| 55 | } |
| 56 | |
| 57 | /* |
| 58 | * arch_id is a variable in decompress_kernel() |
| 59 | */ |
| 60 | #define arch_decomp_setup() __arch_decomp_setup(arch_id) |
| 61 | |
| 62 | #define arch_decomp_wdog() |
| 63 | |
| 64 | #endif |