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//==========================================================================
//
// caches.c
//
// RedBoot cache control functions
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos 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 or (at your option) any later
// version.
//
// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): gthomas
// Contributors: gthomas
// Date: 2002-08-06
// Purpose:
// Description:
//
// This code is part of RedBoot (tm).
//
//####DESCRIPTIONEND####
//
//==========================================================================
#include <redboot.h>
#include <cyg/hal/hal_arch.h>
#include <cyg/hal/hal_intr.h>
#include <cyg/hal/hal_cache.h>
RedBoot_cmd("cache",
"Manage machine caches",
"[ON | OFF]",
do_caches
);
void
do_caches(int argc, char *argv[])
{
unsigned long oldints;
int dcache_on=0, icache_on=0;
if (argc == 2) {
if (strcasecmp(argv[1], "on") == 0) {
HAL_DISABLE_INTERRUPTS(oldints);
HAL_ICACHE_ENABLE();
HAL_DCACHE_ENABLE();
HAL_RESTORE_INTERRUPTS(oldints);
} else if (strcasecmp(argv[1], "off") == 0) {
HAL_DISABLE_INTERRUPTS(oldints);
HAL_DCACHE_SYNC();
HAL_ICACHE_DISABLE();
HAL_DCACHE_DISABLE();
HAL_DCACHE_SYNC();
HAL_ICACHE_INVALIDATE_ALL();
HAL_DCACHE_INVALIDATE_ALL();
HAL_RESTORE_INTERRUPTS(oldints);
} else {
diag_printf("Invalid cache mode: %s\n", argv[1]);
}
} else {
#ifdef HAL_DCACHE_IS_ENABLED
HAL_DCACHE_IS_ENABLED(dcache_on);
#endif
#ifdef HAL_ICACHE_IS_ENABLED
HAL_ICACHE_IS_ENABLED(icache_on);
#endif
diag_printf("Data cache: %s, Instruction cache: %s\n",
dcache_on?"On":"Off", icache_on?"On":"Off");
}
}
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