diff options
author | wdenk <wdenk> | 2003-05-23 12:36:20 +0000 |
---|---|---|
committer | wdenk <wdenk> | 2003-05-23 12:36:20 +0000 |
commit | 4c3b21a5f915988e3d9681cf9cb566bb7bd56859 (patch) | |
tree | 2ed1d16a43a353157b47aed11c6312a2caa76d82 /cpu/xscale/cpu.c | |
parent | d9ff6e84e49cd95323172e6a70a21b7a5c879901 (diff) | |
download | u-boot-imx-4c3b21a5f915988e3d9681cf9cb566bb7bd56859.zip u-boot-imx-4c3b21a5f915988e3d9681cf9cb566bb7bd56859.tar.gz u-boot-imx-4c3b21a5f915988e3d9681cf9cb566bb7bd56859.tar.bz2 |
Patch by Kyle Harris, 20 May 2003:
In preparation for an ixp port, rename cpu/xscale and arch-xscale
into cpu/pxa and arch-pxa.
Diffstat (limited to 'cpu/xscale/cpu.c')
-rw-r--r-- | cpu/xscale/cpu.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/cpu/xscale/cpu.c b/cpu/xscale/cpu.c deleted file mode 100644 index 6a3c24d..0000000 --- a/cpu/xscale/cpu.c +++ /dev/null @@ -1,152 +0,0 @@ -/* - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Marius Groeger <mgroeger@sysgo.de> - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Alex Zuepke <azu@sysgo.de> - * - * 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 - */ - -#include <common.h> -#include <command.h> - -int cpu_init (void) -{ - /* - * setup up stack if necessary - */ -/* - - FIXME: the stack is _below_ the uboot code!! - -#ifdef CONFIG_USE_IRQ - IRQ_STACK_START = _armboot_end + - CONFIG_STACKSIZE + CONFIG_STACKSIZE_IRQ - 4; - FIQ_STACK_START = IRQ_STACK_START + CONFIG_STACKSIZE_FIQ; - _armboot_real_end = FIQ_STACK_START + 4; -#else - _armboot_real_end = _armboot_end + CONFIG_STACKSIZE; -#endif -*/ - return (0); -} - -int cleanup_before_linux (void) -{ - /* - * this function is called just before we call linux - * it prepares the processor for linux - * - * just disable everything that can disturb booting linux - */ - - unsigned long i; - - disable_interrupts (); - - /* turn off I-cache */ - asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i)); - i &= ~0x1000; - asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i)); - - /* flush I-cache */ - asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i)); - - return (0); -} - -int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) -{ - extern void reset_cpu (ulong addr); - - printf ("reseting ...\n"); - - udelay (50000); /* wait 50 ms */ - disable_interrupts (); - reset_cpu (0); - - /*NOTREACHED*/ - return (0); -} - -/* taken from blob */ -void icache_enable (void) -{ - register u32 i; - - /* read control register */ - asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i)); - - /* set i-cache */ - i |= 0x1000; - - /* write back to control register */ - asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i)); -} - -void icache_disable (void) -{ - register u32 i; - - /* read control register */ - asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i)); - - /* clear i-cache */ - i &= ~0x1000; - - /* write back to control register */ - asm ("mcr p15, 0, %0, c1, c0, 0": :"r" (i)); - - /* flush i-cache */ - asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i)); -} - -int icache_status (void) -{ - register u32 i; - - /* read control register */ - asm ("mrc p15, 0, %0, c1, c0, 0":"=r" (i)); - - /* return bit */ - return (i & 0x1000); -} - -/* we will never enable dcache, because we have to setup MMU first */ -void dcache_enable (void) -{ - return; -} - -void dcache_disable (void) -{ - return; -} - -int dcache_status (void) -{ - return 0; /* always off */ -} |