| Wolfgang Denk | 74f4304 | 2005-09-25 01:48:28 +0200 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2002 |
| 3 | * Sysgo Real-Time Solutions, GmbH <www.elinos.com> |
| 4 | * Marius Groeger <mgroeger@sysgo.de> |
| 5 | * |
| 6 | * (C) Copyright 2002 |
| 7 | * Gary Jennejohn, DENX Software Engineering, <gj@denx.de> |
| 8 | * |
| 9 | * See file CREDITS for list of people who contributed to this |
| 10 | * project. |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or |
| 13 | * modify it under the terms of the GNU General Public License as |
| 14 | * published by the Free Software Foundation; either version 2 of |
| 15 | * the License, or (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; if not, write to the Free Software |
| 24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 25 | * MA 02111-1307 USA |
| 26 | */ |
| 27 | |
| 28 | /* |
| 29 | * CPU specific code for an unknown cpu |
| 30 | * - hence fairly empty...... |
| 31 | */ |
| 32 | |
| 33 | #include <common.h> |
| 34 | #include <command.h> |
| 35 | |
| 36 | int cpu_init (void) |
| 37 | { |
| 38 | /* |
| 39 | * setup up stacks if necessary |
| 40 | */ |
| 41 | #ifdef CONFIG_USE_IRQ |
| 42 | DECLARE_GLOBAL_DATA_PTR; |
| 43 | |
| 44 | IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4; |
| 45 | FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; |
| 46 | #endif |
| 47 | return 0; |
| 48 | } |
| 49 | |
| 50 | int cleanup_before_linux (void) |
| 51 | { |
| 52 | /* |
| 53 | * this function is called just before we call linux |
| 54 | * it prepares the processor for linux |
| 55 | * |
| 56 | * we turn off caches etc ... |
| 57 | */ |
| 58 | |
| 59 | disable_interrupts (); |
| 60 | |
| 61 | /* Since the CM has unknown processor we do not support |
| 62 | * cache operations |
| 63 | */ |
| 64 | |
| 65 | return (0); |
| 66 | } |
| 67 | |
| 68 | int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
| 69 | { |
| 70 | extern void reset_cpu (ulong addr); |
| 71 | |
| 72 | disable_interrupts (); |
| 73 | reset_cpu (0); |
| 74 | /*NOTREACHED*/ |
| 75 | return (0); |
| 76 | } |
| 77 | |
| 78 | /* May not be cahed processor on the CM - do nothing */ |
| 79 | void icache_enable (void) |
| 80 | { |
| 81 | } |
| 82 | |
| 83 | void icache_disable (void) |
| 84 | { |
| 85 | } |
| 86 | |
| 87 | /* return "disabled" */ |
| 88 | int icache_status (void) |
| 89 | { |
| 90 | return 0; |
| 91 | } |