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https://github.com/AsahiLinux/u-boot
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f956ad98b2
AFAIK the NIOS2 architecture does not have any possibility to dynamically switch off the data cache. So _status() always reports 1 and _enable/_disable() just issue a flush of everything. For example, common/cmd_elf.c depends on these symbols. Signed-off-by: Joachim Foerster <joachim.foerster@missinglinkelectronics.com> Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/*
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* (C) Copyright 2004, Psyent Corporation <www.psyent.com>
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* Scott McNutt <smcnutt@psyent.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <nios2.h>
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#include <nios2-io.h>
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#include <asm/cache.h>
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#if defined (CONFIG_SYS_NIOS_SYSID_BASE)
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extern void display_sysid (void);
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#endif /* CONFIG_SYS_NIOS_SYSID_BASE */
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int checkcpu (void)
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{
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printf ("CPU : Nios-II\n");
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#if !defined(CONFIG_SYS_NIOS_SYSID_BASE)
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printf ("SYSID : <unknown>\n");
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#else
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display_sysid ();
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#endif
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return (0);
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}
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int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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disable_interrupts();
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/* indirect call to go beyond 256MB limitation of toolchain */
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nios2_callr(CONFIG_SYS_RESET_ADDR);
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return 0;
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}
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int dcache_status(void)
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{
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return 1;
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}
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void dcache_enable(void)
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{
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flush_dcache(CONFIG_SYS_DCACHE_SIZE, CONFIG_SYS_DCACHELINE_SIZE);
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}
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void dcache_disable(void)
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{
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flush_dcache(CONFIG_SYS_DCACHE_SIZE, CONFIG_SYS_DCACHELINE_SIZE);
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}
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