p720t.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:3k
- /*
- * linux/arch/arm/mach-clps711x/p720t.c
- *
- * Copyright (C) 2000-2001 Deep Blue Solutions Ltd
- *
- * 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 <linux/config.h>
- #include <linux/init.h>
- #include <linux/types.h>
- #include <linux/string.h>
- #include <linux/sched.h>
- #include <linux/mm.h>
- #include <asm/hardware.h>
- #include <asm/io.h>
- #include <asm/pgtable.h>
- #include <asm/page.h>
- #include <asm/setup.h>
- #include <asm/mach-types.h>
- #include <asm/mach/arch.h>
- #include <asm/mach/map.h>
- #include <asm/arch/syspld.h>
- extern void clps711x_init_irq(void);
- extern void clps711x_map_io(void);
- /*
- * Map the P720T system PLD. It occupies two address spaces:
- * SYSPLD_PHYS_BASE and SYSPLD_PHYS_BASE + 0x00400000
- * We map both here.
- */
- static struct map_desc p720t_io_desc[] __initdata = {
- { SYSPLD_VIRT_BASE, SYSPLD_PHYS_BASE, 1048576, DOMAIN_IO, 0, 1 },
- { 0xfe400000, 0x10400000, 1048576, DOMAIN_IO, 0, 1 },
- LAST_DESC
- };
- static void __init
- fixup_p720t(struct machine_desc *desc, struct param_struct *params,
- char **cmdline, struct meminfo *mi)
- {
- struct tag *tag = (struct tag *)params;
- /*
- * Our bootloader doesn't setup any tags (yet).
- */
- if (tag->hdr.tag != ATAG_CORE) {
- tag->hdr.tag = ATAG_CORE;
- tag->hdr.size = tag_size(tag_core);
- tag->u.core.flags = 0;
- tag->u.core.pagesize = PAGE_SIZE;
- tag->u.core.rootdev = 0x0100;
- tag = tag_next(tag);
- tag->hdr.tag = ATAG_MEM;
- tag->hdr.size = tag_size(tag_mem32);
- tag->u.mem.size = 4096;
- tag->u.mem.start = PHYS_OFFSET;
- tag = tag_next(tag);
- tag->hdr.tag = ATAG_NONE;
- tag->hdr.size = 0;
- }
- }
- static void __init p720t_map_io(void)
- {
- clps711x_map_io();
- iotable_init(p720t_io_desc);
- }
- MACHINE_START(P720T, "ARM-Prospector720T")
- MAINTAINER("ARM Ltd/Deep Blue Solutions Ltd")
- BOOT_MEM(0xc0000000, 0x80000000, 0xff000000)
- BOOT_PARAMS(0xc0000100)
- FIXUP(fixup_p720t)
- MAPIO(p720t_map_io)
- INITIRQ(clps711x_init_irq)
- MACHINE_END
- static int p720t_hw_init(void)
- {
- /*
- * Power down as much as possible in case we don't
- * have the drivers loaded.
- */
- PLD_LCDEN = 0;
- PLD_PWR &= ~(PLD_S4_ON|PLD_S3_ON|PLD_S2_ON|PLD_S1_ON);
- PLD_KBD = 0;
- PLD_IO = 0;
- PLD_IRDA = 0;
- PLD_CODEC = 0;
- PLD_TCH = 0;
- PLD_SPI = 0;
- #ifndef CONFIG_DEBUG_LL
- PLD_COM2 = 0;
- PLD_COM1 = 0;
- #endif
- return 0;
- }
- __initcall(p720t_hw_init);