diff options
Diffstat (limited to 'cpu/sh4')
| -rw-r--r-- | cpu/sh4/Makefile | 2 | ||||
| -rw-r--r-- | cpu/sh4/start.S | 4 | ||||
| -rw-r--r-- | cpu/sh4/time.c | 98 | ||||
| -rw-r--r-- | cpu/sh4/watchdog.c | 53 |
4 files changed, 40 insertions, 117 deletions
diff --git a/cpu/sh4/Makefile b/cpu/sh4/Makefile index d3c5eef..3c96a49 100644 --- a/cpu/sh4/Makefile +++ b/cpu/sh4/Makefile @@ -29,7 +29,7 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(CPU).a SOBJS = start.o -COBJS = cpu.o interrupts.o watchdog.o time.o cache.o +COBJS = cpu.o interrupts.o watchdog.o cache.o SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(COBJS)) diff --git a/cpu/sh4/start.S b/cpu/sh4/start.S index a68ebb8..711ae66 100644 --- a/cpu/sh4/start.S +++ b/cpu/sh4/start.S @@ -69,6 +69,6 @@ loop: ._reloc_dst_end: .long reloc_dst_end ._bss_start: .long bss_start ._bss_end: .long bss_end -._gd_init: .long (_start - CFG_GBL_DATA_SIZE) -._stack_init: .long (_start - CFG_GBL_DATA_SIZE - CFG_MALLOC_LEN - 16) +._gd_init: .long (_start - CONFIG_SYS_GBL_DATA_SIZE) +._stack_init: .long (_start - CONFIG_SYS_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN - 16) ._sh_generic_init: .long sh_generic_init diff --git a/cpu/sh4/time.c b/cpu/sh4/time.c deleted file mode 100644 index 5f8a3a0..0000000 --- a/cpu/sh4/time.c +++ /dev/null @@ -1,98 +0,0 @@ -/* - * (C) Copyright 2007 - * Nobobuhiro Iwamatsu <iwamatsu@nigauri.org> - * - * (C) Copyright 2003 - * Wolfgang Denk, DENX Software Engineering, wd@denx.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 - */ - -#include <common.h> -#include <asm/processor.h> - -#define TMU_MAX_COUNTER (~0UL) - -static void tmu_timer_start (unsigned int timer) -{ - if (timer > 2) - return; - - *((volatile unsigned char *) TSTR) |= (1 << timer); -} - -static void tmu_timer_stop (unsigned int timer) -{ - u8 val = *((volatile u8 *)TSTR); - if (timer > 2) - return; - *((volatile unsigned char *)TSTR) = val &~(1 << timer); -} - -int timer_init (void) -{ - /* Divide clock by 4 */ - *(volatile u16 *)TCR0 = 0; - - tmu_timer_stop(0); - tmu_timer_start(0); - return 0; -} - -/* - In theory we should return a true 64bit value (ie something that doesn't - overflow). However, we don't. Therefore if TMU runs at fastest rate of - 6.75 MHz this value will wrap after u-boot has been running for approx - 10 minutes. -*/ -unsigned long long get_ticks (void) -{ - return (0 - *((volatile u32 *) TCNT0)); -} - -unsigned long get_timer (unsigned long base) -{ - return ((0 - *((volatile u32 *) TCNT0)) - base); -} - -void set_timer (unsigned long t) -{ - *((volatile unsigned int *) TCNT0) = (0 - t); -} - -void reset_timer (void) -{ - tmu_timer_stop(0); - set_timer (0); - tmu_timer_start(0); -} - -void udelay (unsigned long usec) -{ - unsigned int start = get_timer (0); - unsigned int end = start + (usec * ((CFG_HZ + 500000) / 1000000)); - - while (get_timer (0) < end) - continue; -} - -unsigned long get_tbclk (void) -{ - return CFG_HZ; -} diff --git a/cpu/sh4/watchdog.c b/cpu/sh4/watchdog.c index 346e217..f692429 100644 --- a/cpu/sh4/watchdog.c +++ b/cpu/sh4/watchdog.c @@ -17,34 +17,55 @@ #include <common.h> #include <asm/processor.h> +#include <asm/io.h> #define WDT_BASE WTCNT -static unsigned char cnt_read (void){ - return *((volatile unsigned char *)(WDT_BASE + 0x00)); +#define WDT_WD (1 << 6) +#define WDT_RST_P (0) +#define WDT_RST_M (1 << 5) +#define WDT_ENABLE (1 << 7) + +#if defined(CONFIG_WATCHDOG) +static unsigned char csr_read(void) +{ + return inb(WDT_BASE + 0x04); } -static unsigned char csr_read (void){ - return *((volatile unsigned char *)(WDT_BASE + 0x04)); +static void cnt_write(unsigned char value) +{ + outl((unsigned short)value | 0x5A00, WDT_BASE + 0x00); } -static void cnt_write (unsigned char value){ - while (csr_read() & (1 << 5)) { - /* delay */ - } - *((volatile unsigned short *)(WDT_BASE + 0x00)) - = ((unsigned short) value) | 0x5A00; +static void csr_write(unsigned char value) +{ + outl((unsigned short)value | 0xA500, WDT_BASE + 0x04); } -static void csr_write (unsigned char value){ - *((volatile unsigned short *)(WDT_BASE + 0x04)) - = ((unsigned short) value) | 0xA500; +void watchdog_reset(void) +{ + outl(0x55000000, WDT_BASE + 0x08); } +int watchdog_init(void) +{ + /* Set overflow time*/ + cnt_write(0); + /* Power on reset */ + csr_write(WDT_WD|WDT_RST_P|WDT_ENABLE); + + return 0; +} -int watchdog_init (void){ return 0; } +int watchdog_disable(void) +{ + csr_write(csr_read() & ~WDT_ENABLE); + return 0; +} +#endif -void reset_cpu (unsigned long ignored) +void reset_cpu(unsigned long ignored) { - while(1); + while (1) + ; } |