diff options
Diffstat (limited to 'cpu/arm946es')
| -rw-r--r-- | cpu/arm946es/Makefile | 3 | ||||
| -rw-r--r-- | cpu/arm946es/cpu.c | 17 | ||||
| -rw-r--r-- | cpu/arm946es/interrupts.c | 158 | ||||
| -rw-r--r-- | cpu/arm946es/start.S | 4 | ||||
| -rw-r--r-- | cpu/arm946es/u-boot.lds | 56 |
5 files changed, 61 insertions, 177 deletions
diff --git a/cpu/arm946es/Makefile b/cpu/arm946es/Makefile index d5ac7d3..e81f2da 100644 --- a/cpu/arm946es/Makefile +++ b/cpu/arm946es/Makefile @@ -26,7 +26,8 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(CPU).a START = start.o -COBJS = interrupts.o cpu.o + +COBJS = cpu.o SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(COBJS) $(SOBJS)) diff --git a/cpu/arm946es/cpu.c b/cpu/arm946es/cpu.c index 04f0515..c63c98b 100644 --- a/cpu/arm946es/cpu.c +++ b/cpu/arm946es/cpu.c @@ -31,27 +31,10 @@ #include <common.h> #include <command.h> -#include <arm946es.h> #include <asm/system.h> -#ifdef CONFIG_USE_IRQ -DECLARE_GLOBAL_DATA_PTR; -#endif - static void cache_flush(void); -int cpu_init (void) -{ - /* - * setup up stacks if necessary - */ -#ifdef CONFIG_USE_IRQ - IRQ_STACK_START = _armboot_start - CONFIG_SYS_MALLOC_LEN - CONFIG_SYS_GBL_DATA_SIZE - 4; - FIQ_STACK_START = IRQ_STACK_START - CONFIG_STACKSIZE_IRQ; -#endif - return 0; -} - int cleanup_before_linux (void) { /* diff --git a/cpu/arm946es/interrupts.c b/cpu/arm946es/interrupts.c deleted file mode 100644 index 3a16abe..0000000 --- a/cpu/arm946es/interrupts.c +++ /dev/null @@ -1,158 +0,0 @@ -/* - * (C) Copyright 2003 - * Texas Instruments <www.ti.com> - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Marius Groeger <mgroeger@sysgo.de> - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Alex Zuepke <azu@sysgo.de> - * - * (C) Copyright 2002-2004 - * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de> - * - * (C) Copyright 2004 - * Philippe Robin, ARM Ltd. <philippe.robin@arm.com> - * - * 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 <arm946es.h> - -#define TIMER_LOAD_VAL 0xffffffff -extern void reset_cpu(ulong addr); - -#ifdef CONFIG_INTEGRATOR - /* Timer functionality supplied by Integrator board (AP or CP) */ -#else - -static ulong timestamp; -static ulong lastdec; - -/* nothing really to do with interrupts, just starts up a counter. */ -int interrupt_init (void) -{ - /* init the timestamp and lastdec value */ - reset_timer_masked(); - - return (0); -} - -/* - * timer without interrupts - */ - -void reset_timer (void) -{ - reset_timer_masked (); -} - -ulong get_timer (ulong base) -{ - return get_timer_masked () - base; -} - -void set_timer (ulong t) -{ - timestamp = t; -} - -/* delay x useconds AND perserve advance timstamp value */ -void udelay(unsigned long usec) -{ - udelay_masked(usec); -} - -void reset_timer_masked (void) -{ - /* reset time */ - lastdec = READ_TIMER; /* capure current decrementer value time */ - timestamp = 0; /* start "advancing" time stamp from 0 */ -} - -ulong get_timer_raw (void) -{ - ulong now = READ_TIMER; /* current tick value */ - - if (lastdec >= now) { /* normal mode (non roll) */ - /* normal mode */ - timestamp += lastdec - now; /* move stamp fordward with absoulte diff ticks */ - } else { /* we have overflow of the count down timer */ - /* nts = ts + ld + (TLV - now) - * ts=old stamp, ld=time that passed before passing through -1 - * (TLV-now) amount of time after passing though -1 - * nts = new "advancing time stamp"...it could also roll and cause problems. - */ - timestamp += lastdec + TIMER_LOAD_VAL - now; - } - lastdec = now; - - return timestamp; -} - -ulong get_timer_masked (void) -{ - return get_timer_raw() / TIMER_LOAD_VAL; -} - -/* waits specified delay value and resets timestamp */ -void udelay_masked (unsigned long usec) -{ - ulong tmo; - - if(usec >= 1000){ /* if "big" number, spread normalization to seconds */ - tmo = usec / 1000; /* start to normalize for usec to ticks per sec */ - tmo *= CONFIG_SYS_HZ_CLOCK; /* find number of "ticks" to wait to achieve target */ - tmo /= 1000; /* finish normalize. */ - }else{ /* else small number, don't kill it prior to HZ multiply */ - tmo = usec * CONFIG_SYS_HZ_CLOCK; - tmo /= (1000*1000); - } - - reset_timer_masked (); /* set "advancing" timestamp to 0, set lastdec vaule */ - - while (get_timer_raw () < tmo) /* wait for time stamp to overtake tick number.*/ - /*NOP*/; -} - -/* - * This function is derived from PowerPC code (read timebase as long long). - * On ARM it just returns the timer value. - */ -unsigned long long get_ticks(void) -{ - return get_timer(0); -} - -/* - * This function is derived from PowerPC code (timebase clock frequency). - * On ARM it returns the number of timer ticks per second. - */ -ulong get_tbclk (void) -{ - ulong tbclk; - - tbclk = CONFIG_SYS_HZ; - return tbclk; -} - -#endif /* CONFIG_INTEGRATOR */ diff --git a/cpu/arm946es/start.S b/cpu/arm946es/start.S index 9375c76..627e3cb 100644 --- a/cpu/arm946es/start.S +++ b/cpu/arm946es/start.S @@ -133,7 +133,7 @@ reset: * we do sys-critical inits only at reboot, * not when booting from ram! */ -#ifdef CONFIG_INIT_CRITICAL +#ifndef CONFIG_SKIP_LOWLEVEL_INIT bl cpu_init_crit #endif @@ -192,6 +192,7 @@ _start_armboot: */ +#ifndef CONFIG_SKIP_LOWLEVEL_INIT cpu_init_crit: /* * flush v4 I/D caches @@ -217,6 +218,7 @@ cpu_init_crit: bl lowlevel_init /* go setup memory */ mov lr, ip /* restore link */ mov pc, lr /* back to my caller */ +#endif /* ************************************************************************* * diff --git a/cpu/arm946es/u-boot.lds b/cpu/arm946es/u-boot.lds new file mode 100644 index 0000000..5bd4390 --- /dev/null +++ b/cpu/arm946es/u-boot.lds @@ -0,0 +1,56 @@ +/* + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, <garyj@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 + */ + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) +SECTIONS +{ + . = 0x00000000; + + . = ALIGN(4); + .text : + { + cpu/arm946es/start.o (.text) + *(.text) + } + + . = ALIGN(4); + .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) } + + . = ALIGN(4); + .data : { *(.data) } + + . = ALIGN(4); + .got : { *(.got) } + + . = .; + __u_boot_cmd_start = .; + .u_boot_cmd : { *(.u_boot_cmd) } + __u_boot_cmd_end = .; + + . = ALIGN(4); + __bss_start = .; + .bss (NOLOAD) : { *(.bss) . = ALIGN(4); } + _end = .; +} |