125 lines
3.3 KiB
C
125 lines
3.3 KiB
C
/*
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* BRIEF MODULE DESCRIPTION
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* setup.c - board dependent boot routines
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*
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* Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
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* Author: Fuxin Zhang, zhangfx@lemote.com
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <linux/bootmem.h>
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <asm/bootinfo.h>
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#include <asm/mc146818-time.h>
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#include <asm/time.h>
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#include <asm/wbflush.h>
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#ifdef CONFIG_VT
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#include <linux/console.h>
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#include <linux/screen_info.h>
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#endif
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extern void mips_reboot_setup(void);
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#ifdef CONFIG_64BIT
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#define PTR_PAD(p) ((0xffffffff00000000)|((unsigned long long)(p)))
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#else
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#define PTR_PAD(p) (p)
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#endif
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unsigned long cpu_clock_freq;
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unsigned long bus_clock;
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unsigned int memsize;
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unsigned int highmemsize = 0;
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void __init plat_timer_setup(struct irqaction *irq)
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{
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setup_irq(MIPS_CPU_IRQ_BASE + 7, irq);
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}
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static void __init loongson2e_time_init(void)
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{
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/* setup mips r4k timer */
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mips_hpt_frequency = cpu_clock_freq / 2;
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}
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static unsigned long __init mips_rtc_get_time(void)
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{
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return mc146818_get_cmos_time();
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}
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void (*__wbflush)(void);
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EXPORT_SYMBOL(__wbflush);
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static void wbflush_loongson2e(void)
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{
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asm(".set\tpush\n\t"
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".set\tnoreorder\n\t"
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".set mips3\n\t"
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"sync\n\t"
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"nop\n\t"
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".set\tpop\n\t"
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".set mips0\n\t");
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}
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void __init plat_mem_setup(void)
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{
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set_io_port_base(PTR_PAD(0xbfd00000));
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mips_reboot_setup();
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board_time_init = loongson2e_time_init;
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rtc_mips_get_time = mips_rtc_get_time;
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__wbflush = wbflush_loongson2e;
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add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
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#ifdef CONFIG_64BIT
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if (highmemsize > 0) {
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add_memory_region(0x20000000, highmemsize << 20, BOOT_MEM_RAM);
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}
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#endif
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#ifdef CONFIG_VT
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#if defined(CONFIG_VGA_CONSOLE)
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conswitchp = &vga_con;
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screen_info = (struct screen_info) {
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0, 25, /* orig-x, orig-y */
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0, /* unused */
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0, /* orig-video-page */
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0, /* orig-video-mode */
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80, /* orig-video-cols */
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0, 0, 0, /* ega_ax, ega_bx, ega_cx */
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25, /* orig-video-lines */
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VIDEO_TYPE_VGAC, /* orig-video-isVGA */
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16 /* orig-video-points */
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};
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#elif defined(CONFIG_DUMMY_CONSOLE)
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conswitchp = &dummy_con;
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#endif
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#endif
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}
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