From 74f4304ee717d0f4b3a27e7fd4a64944749b8783 Mon Sep 17 00:00:00 2001 From: Wolfgang Denk Date: Sun, 25 Sep 2005 01:48:28 +0200 Subject: Add ARM946E cpu and core module targets; remap memory to 0x00000000 Patch by Peter Pearse, 2 Feb 2005 --- cpu/arm_intcm/cpu.c | 91 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 cpu/arm_intcm/cpu.c (limited to 'cpu/arm_intcm/cpu.c') diff --git a/cpu/arm_intcm/cpu.c b/cpu/arm_intcm/cpu.c new file mode 100644 index 00000000000..34cd5af82b2 --- /dev/null +++ b/cpu/arm_intcm/cpu.c @@ -0,0 +1,91 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH + * Marius Groeger + * + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* + * CPU specific code for an unknown cpu + * - hence fairly empty...... + */ + +#include +#include + +int cpu_init (void) +{ + /* + * setup up stacks if necessary + */ +#ifdef CONFIG_USE_IRQ + DECLARE_GLOBAL_DATA_PTR; + + IRQ_STACK_START = _armboot_start - CFG_MALLOC_LEN - CFG_GBL_DATA_SIZE - 4; + FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; +#endif + return 0; +} + +int cleanup_before_linux (void) +{ + /* + * this function is called just before we call linux + * it prepares the processor for linux + * + * we turn off caches etc ... + */ + + disable_interrupts (); + + /* Since the CM has unknown processor we do not support + * cache operations + */ + + return (0); +} + +int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + extern void reset_cpu (ulong addr); + + disable_interrupts (); + reset_cpu (0); + /*NOTREACHED*/ + return (0); +} + +/* May not be cahed processor on the CM - do nothing */ +void icache_enable (void) +{ +} + +void icache_disable (void) +{ +} + +/* return "disabled" */ +int icache_status (void) +{ + return 0; +} -- cgit v1.2.3