86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
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/*
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* BRIEF MODULE DESCRIPTION
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* IT8172/QED5231 board setup.
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*
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* Copyright 2000 MontaVista Software Inc.
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* Author: MontaVista Software, Inc.
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* ppopov@mvista.com or source@mvista.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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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/sched.h>
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#include <linux/bootmem.h>
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#include <asm/addrspace.h>
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#include <asm/bootinfo.h>
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <asm/it8172/it8172.h>
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#include <asm/it8172/it8172_dbg.h>
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int prom_argc;
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char **prom_argv, **prom_envp;
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extern char _end;
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extern void __init prom_init_cmdline(void);
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extern unsigned long __init prom_get_memsize(void);
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extern void __init it8172_init_ram_resource(unsigned long memsize);
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#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
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#define PFN_ALIGN(x) (((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
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const char *get_system_type(void)
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{
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return "ITE QED-4N-S01B";
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}
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void __init prom_init(void)
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{
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unsigned long mem_size;
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unsigned long pcicr;
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prom_argc = fw_arg0;
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prom_argv = (char **) fw_arg1;
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prom_envp = (int *) fw_arg3;
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mips_machgroup = MACH_GROUP_ITE;
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mips_machtype = MACH_QED_4N_S01B; /* ITE board name/number */
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prom_init_cmdline();
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mem_size = prom_get_memsize();
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printk("Memory size: %dMB\n", (unsigned)mem_size);
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mem_size <<= 20; /* MB */
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/*
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* make the entire physical memory visible to pci bus masters
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*/
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IT_READ(IT_MC_PCICR, pcicr);
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pcicr &= ~0x1f;
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pcicr |= (mem_size - 1) >> 22;
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IT_WRITE(IT_MC_PCICR, pcicr);
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it8172_init_ram_resource(mem_size);
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add_memory_region(0, mem_size, BOOT_MEM_RAM);
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}
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