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![Matt Waddel](/assets/img/avatar_default.png)
Fixed "pointer from integer without a cast" warnings in Vexpress. Signed-off-by: Matt Waddel <matt.waddel@linaro.org>
224 lines
5.1 KiB
C
224 lines
5.1 KiB
C
/*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*
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* (C) Copyright 2002
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* David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
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*
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* (C) Copyright 2003
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* Texas Instruments, <www.ti.com>
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* Kshitij Gupta <Kshitij@ti.com>
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*
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* (C) Copyright 2004
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* ARM Ltd.
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* Philippe Robin, <philippe.robin@arm.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <netdev.h>
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#include <asm/io.h>
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#include <asm/arch/systimer.h>
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#include <asm/arch/sysctrl.h>
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#include <asm/arch/wdt.h>
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static ulong timestamp;
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static ulong lastdec;
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static struct wdt *wdt_base = (struct wdt *)WDT_BASE;
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static struct systimer *systimer_base = (struct systimer *)SYSTIMER_BASE;
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static struct sysctrl *sysctrl_base = (struct sysctrl *)SCTL_BASE;
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static void flash__init(void);
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static void vexpress_timer_init(void);
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DECLARE_GLOBAL_DATA_PTR;
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#if defined(CONFIG_SHOW_BOOT_PROGRESS)
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void show_boot_progress(int progress)
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{
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printf("Boot reached stage %d\n", progress);
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}
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#endif
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static inline void delay(ulong loops)
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{
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__asm__ volatile ("1:\n"
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"subs %0, %1, #1\n"
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"bne 1b" : "=r" (loops) : "0" (loops));
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}
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int board_init(void)
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{
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gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
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gd->bd->bi_arch_number = MACH_TYPE_VEXPRESS;
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gd->flags = 0;
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icache_enable();
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flash__init();
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vexpress_timer_init();
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return 0;
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}
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int board_eth_init(bd_t *bis)
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{
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int rc = 0;
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#ifdef CONFIG_SMC911X
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rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
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#endif
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return rc;
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}
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static void flash__init(void)
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{
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/* Setup the sytem control register to allow writing to flash */
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writel(readl(&sysctrl_base->scflashctrl) | VEXPRESS_FLASHPROG_FLVPPEN,
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&sysctrl_base->scflashctrl);
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}
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int dram_init(void)
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{
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gd->ram_size =
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get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, PHYS_SDRAM_1_SIZE);
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return 0;
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}
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void dram_init_banksize(void)
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{
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gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
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gd->bd->bi_dram[0].size =
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get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
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gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
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gd->bd->bi_dram[1].size =
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get_ram_size((long *)PHYS_SDRAM_2, PHYS_SDRAM_2_SIZE);
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}
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int timer_init(void)
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{
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return 0;
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}
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/*
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* Start timer:
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* Setup a 32 bit timer, running at 1KHz
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* Versatile Express Motherboard provides 1 MHz timer
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*/
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static void vexpress_timer_init(void)
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{
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/*
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* Set clock frequency in system controller:
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* VEXPRESS_REFCLK is 32KHz
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* VEXPRESS_TIMCLK is 1MHz
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*/
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writel(SP810_TIMER0_ENSEL | SP810_TIMER1_ENSEL |
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SP810_TIMER2_ENSEL | SP810_TIMER3_ENSEL |
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readl(&sysctrl_base->scctrl), &sysctrl_base->scctrl);
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/*
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* Set Timer0 to be:
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* Enabled, free running, no interrupt, 32-bit, wrapping
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*/
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writel(SYSTIMER_RELOAD, &systimer_base->timer0load);
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writel(SYSTIMER_RELOAD, &systimer_base->timer0value);
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writel(SYSTIMER_EN | SYSTIMER_32BIT | \
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readl(&systimer_base->timer0control), \
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&systimer_base->timer0control);
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reset_timer_masked();
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}
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/* Use the ARM Watchdog System to cause reset */
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void reset_cpu(ulong addr)
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{
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writeb(WDT_EN, &wdt_base->wdogcontrol);
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writel(WDT_RESET_LOAD, &wdt_base->wdogload);
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while (1)
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;
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}
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/*
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* Delay x useconds AND perserve advance timstamp value
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* assumes timer is ticking at 1 msec
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*/
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void udelay(ulong usec)
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{
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ulong tmo, tmp;
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tmo = usec / 1000;
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tmp = get_timer(0); /* get current timestamp */
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/*
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* If setting this forward will roll time stamp then
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* reset "advancing" timestamp to 0 and set lastdec value
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* otherwise set the advancing stamp to the wake up time
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*/
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if ((tmo + tmp + 1) < tmp)
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reset_timer_masked();
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else
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tmo += tmp;
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while (get_timer_masked() < tmo)
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; /* loop till wakeup event */
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}
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ulong get_timer(ulong base)
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{
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return get_timer_masked() - base;
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}
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void reset_timer_masked(void)
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{
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lastdec = readl(&systimer_base->timer0value) / 1000;
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timestamp = 0;
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}
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void reset_timer(void)
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{
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reset_timer_masked();
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}
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ulong get_timer_masked(void)
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{
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ulong now = readl(&systimer_base->timer0value) / 1000;
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if (lastdec >= now) { /* normal mode (non roll) */
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timestamp += lastdec - now;
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} else { /* count down timer overflowed */
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/*
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* nts = ts + ld - now
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* ts = old stamp, ld = time before passing through - 1
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* now = amount of time after passing though - 1
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* nts = new "advancing time stamp"
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*/
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timestamp += lastdec + SYSTIMER_RELOAD - now;
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}
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lastdec = now;
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return timestamp;
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}
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void lowlevel_init(void)
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{
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}
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ulong get_board_rev(void){
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return readl((u32 *)SYS_ID);
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}
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