diff options
Diffstat (limited to 'src/flash/ocl/at91sam7x/dcc.c')
-rw-r--r-- | src/flash/ocl/at91sam7x/dcc.c | 102 |
1 files changed, 51 insertions, 51 deletions
diff --git a/src/flash/ocl/at91sam7x/dcc.c b/src/flash/ocl/at91sam7x/dcc.c index 2c352369..3507bbe5 100644 --- a/src/flash/ocl/at91sam7x/dcc.c +++ b/src/flash/ocl/at91sam7x/dcc.c @@ -1,51 +1,51 @@ -/***************************************************************************
- * Copyright (C) 2007 by Pavel Chromy *
- * chromy@asix.cz *
- * *
- * 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. *
- ***************************************************************************/
-#include "dcc.h"
-
-
-/* debug channel read (debugger->MCU) */
-uint32 dcc_rd(void)
-{
- volatile uint32 dcc_reg;
-
- do {
- asm volatile ("mrc p14, 0, %0, C0, C0" : "=r" (dcc_reg) : );
- } while ((dcc_reg&1)==0);
-
- asm volatile ("mrc p14, 0, %0, C1, C0" : "=r" (dcc_reg) : );
- return dcc_reg;
-}
-
-
-/* debug channel write (MCU->debugger) */
-int dcc_wr(uint32 data)
-{
- volatile uint32 dcc_reg;
-
- do {
- asm volatile ("mrc p14, 0, %0, C0, C0" : "=r" (dcc_reg) : );
- /* operation controled by master, cancel operation
- upon reception of data for immediate response */
- if (dcc_reg&1) return -1;
- } while (dcc_reg&2);
-
- asm volatile ("mcr p14, 0, %0, C1, C0" : : "r" (data));
- return 0;
-}
+/*************************************************************************** + * Copyright (C) 2007 by Pavel Chromy * + * chromy@asix.cz * + * * + * 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. * + ***************************************************************************/ +#include "dcc.h" + + +/* debug channel read (debugger->MCU) */ +uint32 dcc_rd(void) +{ + volatile uint32 dcc_reg; + + do { + asm volatile ("mrc p14, 0, %0, C0, C0" : "=r" (dcc_reg) : ); + } while ((dcc_reg&1)==0); + + asm volatile ("mrc p14, 0, %0, C1, C0" : "=r" (dcc_reg) : ); + return dcc_reg; +} + + +/* debug channel write (MCU->debugger) */ +int dcc_wr(uint32 data) +{ + volatile uint32 dcc_reg; + + do { + asm volatile ("mrc p14, 0, %0, C0, C0" : "=r" (dcc_reg) : ); + /* operation controled by master, cancel operation + upon reception of data for immediate response */ + if (dcc_reg&1) return -1; + } while (dcc_reg&2); + + asm volatile ("mcr p14, 0, %0, C1, C0" : : "r" (data)); + return 0; +} |