diff options
Diffstat (limited to 'cpu/arm920t/ks8695')
| -rw-r--r-- | cpu/arm920t/ks8695/Makefile | 47 | ||||
| -rw-r--r-- | cpu/arm920t/ks8695/lowlevel_init.S | 205 | ||||
| -rw-r--r-- | cpu/arm920t/ks8695/timer.c | 108 |
3 files changed, 0 insertions, 360 deletions
diff --git a/cpu/arm920t/ks8695/Makefile b/cpu/arm920t/ks8695/Makefile deleted file mode 100644 index f53fdc2..0000000 --- a/cpu/arm920t/ks8695/Makefile +++ /dev/null @@ -1,47 +0,0 @@ -# -# (C) Copyright 2000-2006 -# 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 $(TOPDIR)/config.mk - -LIB = $(obj)lib$(SOC).a - -SOBJS = lowlevel_init.o - -COBJS = timer.o - -SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) -OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) - -all: $(obj).depend $(LIB) - -$(LIB): $(OBJS) - $(AR) $(ARFLAGS) $@ $(OBJS) - -######################################################################### - -# defines $(obj).depend target -include $(SRCTREE)/rules.mk - -sinclude $(obj).depend - -######################################################################### diff --git a/cpu/arm920t/ks8695/lowlevel_init.S b/cpu/arm920t/ks8695/lowlevel_init.S deleted file mode 100644 index e9f1227..0000000 --- a/cpu/arm920t/ks8695/lowlevel_init.S +++ /dev/null @@ -1,205 +0,0 @@ -/* - * lowlevel_init.S - basic hardware initialization for the KS8695 CPU - * - * Copyright (c) 2004-2005, Greg Ungerer <greg.ungerer@opengear.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 <config.h> -#include <version.h> -#include <asm/arch/platform.h> - -#ifndef CONFIG_SKIP_LOWLEVEL_INIT - -/* - ************************************************************************* - * - * Handy dandy macros - * - ************************************************************************* - */ - -/* Delay a bit */ -.macro DELAY_FOR cycles, reg0 - ldr \reg0, =\cycles - subs \reg0, \reg0, #1 - subne pc, pc, #0xc -.endm - -/* - ************************************************************************* - * - * Some local storage. - * - ************************************************************************* - */ - -/* Should we boot with an interactive console or not */ -.globl serial_console - -/* - ************************************************************************* - * - * Raw hardware initialization code. The important thing is to get - * SDRAM setup and running. We do some other basic things here too, - * like getting the PLL set for high speed, and init the LEDs. - * - ************************************************************************* - */ - -.globl lowlevel_init -lowlevel_init: - -#if DEBUG - /* - * enable UART for early debug trace - */ - ldr r1, =(KS8695_IO_BASE+KS8695_UART_DIVISOR) - mov r2, #0xd9 - str r2, [r1] /* 115200 baud */ - ldr r1, =(KS8695_IO_BASE+KS8695_UART_LINE_CTRL) - mov r2, #0x03 - str r2, [r1] /* 8 data bits, no parity, 1 stop */ - ldr r1, =(KS8695_IO_BASE+KS8695_UART_TX_HOLDING) - mov r2, #0x41 - str r2, [r1] /* write 'A' */ -#endif -#if DEBUG - ldr r1, =(KS8695_IO_BASE+KS8695_UART_TX_HOLDING) - mov r2, #0x42 - str r2, [r1] -#endif - - /* - * remap the memory and flash regions. we want to end up with - * ram from address 0, and flash at 32MB. - */ - ldr r1, =(KS8695_IO_BASE+KS8695_MEM_CTRL0) - ldr r2, =0xbfc00040 - str r2, [r1] /* large flash map */ - ldr pc, =(highflash+0x02000000-0x00f00000) /* jump to high flash address */ -highflash: - ldr r2, =0x8fe00040 - str r2, [r1] /* remap flash range */ - - /* - * remap the second select region to the 4MB immediately after - * the first region. This way if you have a larger flash (say 8Mb) - * then you can have it all mapped nicely. Has no effect if you - * only have a 4Mb or smaller flash. - */ - ldr r1, =(KS8695_IO_BASE+KS8695_MEM_CTRL1) - ldr r2, =0x9fe40040 - str r2, [r1] /* remap flash2 region, contiguous */ - ldr r1, =(KS8695_IO_BASE+KS8695_MEM_GENERAL) - ldr r2, =0x30000005 - str r2, [r1] /* enable both flash selects */ - -#ifdef CONFIG_CM41xx - /* - * map the second flash chip, using the external IO lines. - */ - ldr r1, =(KS8695_IO_BASE+KS8695_IO_CTRL0) - ldr r2, =0xafe80b6d - str r2, [r1] /* remap io0 region, contiguous */ - ldr r1, =(KS8695_IO_BASE+KS8695_IO_CTRL1) - ldr r2, =0xbfec0b6d - str r2, [r1] /* remap io1 region, contiguous */ - ldr r1, =(KS8695_IO_BASE+KS8695_MEM_GENERAL) - ldr r2, =0x30050005 - str r2, [r1] /* enable second flash */ -#endif - - /* - * before relocating, we have to setup RAM timing - */ - ldr r1, =(KS8695_IO_BASE+KS8695_SDRAM_CTRL0) -#if (PHYS_SDRAM_1_SIZE == 0x02000000) - ldr r2, =0x7fc0000e /* 32MB */ -#else - ldr r2, =0x3fc0000e /* 16MB */ -#endif - str r2, [r1] /* configure sdram bank0 setup */ - ldr r1, =(KS8695_IO_BASE+KS8695_SDRAM_CTRL1) - mov r2, #0 - str r2, [r1] /* configure sdram bank1 setup */ - - ldr r1, =(KS8695_IO_BASE+KS8695_SDRAM_GENERAL) - ldr r2, =0x0000000a - str r2, [r1] /* set RAS/CAS timing */ - - ldr r1, =(KS8695_IO_BASE+KS8695_SDRAM_BUFFER) - ldr r2, =0x00030000 - str r2, [r1] /* send NOP command */ - DELAY_FOR 0x100, r0 - ldr r2, =0x00010000 - str r2, [r1] /* send PRECHARGE-ALL */ - DELAY_FOR 0x100, r0 - - ldr r1, =(KS8695_IO_BASE+KS8695_SDRAM_REFRESH) - ldr r2, =0x00000020 - str r2, [r1] /* set for fast refresh */ - DELAY_FOR 0x100, r0 - ldr r2, =0x00000190 - str r2, [r1] /* set normal refresh timing */ - - ldr r1, =(KS8695_IO_BASE+KS8695_SDRAM_BUFFER) - ldr r2, =0x00020033 - str r2, [r1] /* send mode command */ - DELAY_FOR 0x100, r0 - ldr r2, =0x01f00000 - str r2, [r1] /* enable sdram fifos */ - - /* - * set pll to top speed - */ - ldr r1, =(KS8695_IO_BASE+KS8695_SYSTEN_BUS_CLOCK) - mov r2, #0 - str r2, [r1] /* set pll clock to 166MHz */ - - ldr r1, =(KS8695_IO_BASE+KS8695_SWITCH_CTRL0) - ldr r2, [r1] /* Get switch ctrl0 register */ - and r2, r2, #0x0fc00000 /* Mask out LED control bits */ - orr r2, r2, #0x01800000 /* Set Link/activity/speed actions */ - str r2, [r1] - -#ifdef CONFIG_CM4008 - ldr r1, =(KS8695_IO_BASE+KS8695_GPIO_MODE) - ldr r2, =0x0000fe30 - str r2, [r1] /* enable LED's as outputs */ - ldr r1, =(KS8695_IO_BASE+KS8695_GPIO_DATA) - ldr r2, =0x0000fe20 - str r2, [r1] /* turn on power LED */ -#endif -#if defined(CONFIG_CM4008) || defined(CONFIG_CM41xx) - ldr r2, [r1] /* get current GPIO input data */ - tst r2, #0x8 /* check if "erase" depressed */ - beq nobutton - mov r2, #0 /* be quiet on boot, no console */ - ldr r1, =serial_console - str r2, [r1] -nobutton: -#endif - - add lr, lr, #0x02000000 /* flash is now mapped high */ - add ip, ip, #0x02000000 /* this is a hack */ - mov pc, lr /* all done, return */ - -#endif /* CONFIG_SKIP_LOWLEVEL_INIT */ diff --git a/cpu/arm920t/ks8695/timer.c b/cpu/arm920t/ks8695/timer.c deleted file mode 100644 index 886e370..0000000 --- a/cpu/arm920t/ks8695/timer.c +++ /dev/null @@ -1,108 +0,0 @@ -/* - * (C) Copyright 2004-2005, Greg Ungerer <greg.ungerer@opengear.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 <asm/arch/platform.h> - -/* - * Handy KS8695 register access functions. - */ -#define ks8695_read(a) *((volatile ulong *) (KS8695_IO_BASE + (a))) -#define ks8695_write(a,v) *((volatile ulong *) (KS8695_IO_BASE + (a))) = (v) - -ulong timer_ticks; - -int timer_init (void) -{ - reset_timer(); - - return 0; -} - -/* - * Initial timer set constants. Nothing complicated, just set for a 1ms - * tick. - */ -#define TIMER_INTERVAL (TICKS_PER_uSEC * mSEC_1) -#define TIMER_COUNT (TIMER_INTERVAL / 2) -#define TIMER_PULSE TIMER_COUNT - -void reset_timer_masked(void) -{ - /* Set the hadware timer for 1ms */ - ks8695_write(KS8695_TIMER1, TIMER_COUNT); - ks8695_write(KS8695_TIMER1_PCOUNT, TIMER_PULSE); - ks8695_write(KS8695_TIMER_CTRL, 0x2); - timer_ticks = 0; -} - -void reset_timer(void) -{ - reset_timer_masked(); -} - -ulong get_timer_masked(void) -{ - /* Check for timer wrap */ - if (ks8695_read(KS8695_INT_STATUS) & KS8695_INTMASK_TIMERINT1) { - /* Clear interrupt condition */ - ks8695_write(KS8695_INT_STATUS, KS8695_INTMASK_TIMERINT1); - timer_ticks++; - } - return timer_ticks; -} - -ulong get_timer(ulong base) -{ - return (get_timer_masked() - base); -} - -void set_timer(ulong t) -{ - timer_ticks = t; -} - -void __udelay(ulong usec) -{ - ulong start = get_timer_masked(); - ulong end; - - /* Only 1ms resolution :-( */ - end = usec / 1000; - while (get_timer(start) < end) - ; -} - -void reset_cpu (ulong ignored) -{ - ulong tc; - - /* Set timer0 to watchdog, and let it timeout */ - tc = ks8695_read(KS8695_TIMER_CTRL) & 0x2; - ks8695_write(KS8695_TIMER_CTRL, tc); - ks8695_write(KS8695_TIMER0, ((10 << 8) | 0xff)); - ks8695_write(KS8695_TIMER_CTRL, (tc | 0x1)); - - /* Should only wait here till watchdog resets */ - for (;;) - ; -} |