diff options
Diffstat (limited to 'cpu/bf533/interrupts.c')
| -rw-r--r-- | cpu/bf533/interrupts.c | 56 |
1 files changed, 30 insertions, 26 deletions
diff --git a/cpu/bf533/interrupts.c b/cpu/bf533/interrupts.c index df1a25e..14d06cf 100644 --- a/cpu/bf533/interrupts.c +++ b/cpu/bf533/interrupts.c @@ -1,7 +1,7 @@ /* * U-boot - interrupts.c Interrupt related routines * - * Copyright (c) 2005 blackfin.uclinux.org + * Copyright (c) 2005-2007 Analog Devices Inc. * * This file is based on interrupts.c * Copyright 1996 Roman Zippel @@ -10,7 +10,7 @@ * Copyright 2002 Arcturus Networks Inc. MaTed <mated@sympatico.ca> * Copyright 2003 Metrowerks/Motorola * Copyright 2003 Bas Vermeulen <bas@buyways.nl>, - * BuyWays B.V. (www.buyways.nl) + * BuyWays B.V. (www.buyways.nl) * * (C) Copyright 2000-2004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. @@ -30,21 +30,22 @@ * * 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 + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA */ #include <common.h> #include <asm/machdep.h> #include <asm/irq.h> -#include <asm/cpu/defBF533.h> +#include <config.h> +#include <asm/blackfin.h> #include "cpu.h" static ulong timestamp; static ulong last_time; static int int_flag; -int irq_flags; /* needed by asm-blackfin/system.h */ +int irq_flags; /* needed by asm-blackfin/system.h */ /* Functions just to satisfy the linker */ @@ -61,7 +62,7 @@ unsigned long long get_ticks(void) * This function is derived from PowerPC code (timebase clock frequency). * On BF533 it returns the number of timer ticks per second. */ -ulong get_tbclk (void) +ulong get_tbclk(void) { ulong tbclk; @@ -91,22 +92,22 @@ void udelay(unsigned long usec) unsigned long cclk; cclk = (CONFIG_CCLK_HZ); - while ( usec > 1 ) { - /* - * how many clock ticks to delay? - * - request(in useconds) * clock_ticks(Hz) / useconds/second - */ + while (usec > 1) { + /* + * how many clock ticks to delay? + * - request(in useconds) * clock_ticks(Hz) / useconds/second + */ if (usec < 1000) { - delay = (usec * (cclk/244)) >> 12 ; + delay = (usec * (cclk / 244)) >> 12; usec = 0; } else { - delay = (1000 * (cclk/244)) >> 12 ; + delay = (1000 * (cclk / 244)) >> 12; usec -= 1000; } - asm volatile (" %0 = CYCLES;": "=g"(start)); + asm volatile (" %0 = CYCLES;":"=r" (start)); do { - asm volatile (" %0 = CYCLES; ": "=g"(stop)); + asm volatile (" %0 = CYCLES; ":"=r" (stop)); } while (stop - start < delay); } @@ -117,7 +118,7 @@ void timer_init(void) { *pTCNTL = 0x1; *pTSCALE = 0x0; - *pTCOUNT = MAX_TIM_LOAD; + *pTCOUNT = MAX_TIM_LOAD; *pTPERIOD = MAX_TIM_LOAD; *pTCNTL = 0x7; asm("CSYNC;"); @@ -146,20 +147,23 @@ ulong get_timer(ulong base) /* Number of clocks elapsed */ ulong clocks = (MAX_TIM_LOAD - (*pTCOUNT)); - /* Find if the TCOUNT is reset - timestamp gives the number of times - TCOUNT got reset */ - if(clocks < last_time) + /** + * Find if the TCOUNT is reset + * timestamp gives the number of times + * TCOUNT got reset + */ + if (clocks < last_time) timestamp++; last_time = clocks; /* Get the number of milliseconds */ - milisec = clocks/(CONFIG_CCLK_HZ / 1000); + milisec = clocks / (CONFIG_CCLK_HZ / 1000); - /* Find the number of millisonds - that got elapsed before this TCOUNT - cycle */ - milisec += timestamp * (MAX_TIM_LOAD/(CONFIG_CCLK_HZ / 1000)); + /** + * Find the number of millisonds + * that got elapsed before this TCOUNT cycle + */ + milisec += timestamp * (MAX_TIM_LOAD / (CONFIG_CCLK_HZ / 1000)); return (milisec - base); } |