mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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126 lines
3.0 KiB
C
126 lines
3.0 KiB
C
/*
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* linux/arch/arm/mach-clps711x/p720t.c
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*
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* Copyright (C) 2000-2001 Deep Blue Solutions Ltd
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/io.h>
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#include <mach/hardware.h>
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#include <asm/pgtable.h>
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#include <asm/page.h>
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#include <asm/setup.h>
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#include <asm/sizes.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <mach/syspld.h>
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#include "common.h"
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/*
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* Map the P720T system PLD. It occupies two address spaces:
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* SYSPLD_PHYS_BASE and SYSPLD_PHYS_BASE + 0x00400000
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* We map both here.
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*/
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static struct map_desc p720t_io_desc[] __initdata = {
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{
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.virtual = SYSPLD_VIRT_BASE,
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.pfn = __phys_to_pfn(SYSPLD_PHYS_BASE),
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.length = SZ_1M,
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.type = MT_DEVICE
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}, {
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.virtual = 0xfe400000,
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.pfn = __phys_to_pfn(0x10400000),
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.length = SZ_1M,
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.type = MT_DEVICE
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}
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};
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static void __init
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fixup_p720t(struct machine_desc *desc, struct tag *tag,
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char **cmdline, struct meminfo *mi)
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{
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/*
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* Our bootloader doesn't setup any tags (yet).
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*/
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if (tag->hdr.tag != ATAG_CORE) {
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tag->hdr.tag = ATAG_CORE;
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tag->hdr.size = tag_size(tag_core);
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tag->u.core.flags = 0;
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tag->u.core.pagesize = PAGE_SIZE;
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tag->u.core.rootdev = 0x0100;
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tag = tag_next(tag);
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tag->hdr.tag = ATAG_MEM;
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tag->hdr.size = tag_size(tag_mem32);
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tag->u.mem.size = 4096;
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tag->u.mem.start = PHYS_OFFSET;
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tag = tag_next(tag);
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tag->hdr.tag = ATAG_NONE;
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tag->hdr.size = 0;
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}
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}
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static void __init p720t_map_io(void)
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{
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clps711x_map_io();
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iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
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}
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MACHINE_START(P720T, "ARM-Prospector720T")
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/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
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.phys_io = 0x80000000,
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.io_pg_offst = ((0xff000000) >> 18) & 0xfffc,
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.boot_params = 0xc0000100,
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.fixup = fixup_p720t,
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.map_io = p720t_map_io,
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.init_irq = clps711x_init_irq,
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.timer = &clps711x_timer,
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MACHINE_END
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static int p720t_hw_init(void)
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{
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/*
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* Power down as much as possible in case we don't
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* have the drivers loaded.
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*/
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PLD_LCDEN = 0;
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PLD_PWR &= ~(PLD_S4_ON|PLD_S3_ON|PLD_S2_ON|PLD_S1_ON);
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PLD_KBD = 0;
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PLD_IO = 0;
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PLD_IRDA = 0;
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PLD_CODEC = 0;
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PLD_TCH = 0;
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PLD_SPI = 0;
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#ifndef CONFIG_DEBUG_LL
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PLD_COM2 = 0;
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PLD_COM1 = 0;
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#endif
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return 0;
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}
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__initcall(p720t_hw_init);
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