+++ /dev/null
-/*
- * arch/ubicom32/kernel/setup.c
- * Ubicom32 architecture-dependent parts of system setup.
- *
- * (C) Copyright 2009, Ubicom, Inc.
- * Copyright (C) 1999-2007 Greg Ungerer (gerg@snapgear.com)
- * Copyright (C) 1998,1999 D. Jeff Dionne <jeff@uClinux.org>
- * Copyleft ()) 2000 James D. Schettine {james@telos-systems.com}
- * Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>
- * Copyright (C) 1995 Hamish Macdonald
- * Copyright (C) 2000 Lineo Inc. (www.lineo.com)
- * Copyright (C) 2001 Lineo, Inc. <www.lineo.com>
- * 68VZ328 Fixes/support Evan Stawnyczy <e@lineo.ca>
- *
- * This file is part of the Ubicom32 Linux Kernel Port.
- *
- * The Ubicom32 Linux Kernel Port 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.
- *
- * The Ubicom32 Linux Kernel Port 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 the Ubicom32 Linux Kernel Port. If not,
- * see <http://www.gnu.org/licenses/>.
- *
- * Ubicom32 implementation derived from (with many thanks):
- * arch/m68knommu
- * arch/blackfin
- * arch/parisc
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/fb.h>
-#include <linux/module.h>
-#include <linux/console.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/bootmem.h>
-#include <linux/seq_file.h>
-#include <linux/init.h>
-
-#include <asm/devtree.h>
-#include <asm/setup.h>
-#include <asm/irq.h>
-#include <asm/machdep.h>
-#include <asm/pgtable.h>
-#include <asm/pgalloc.h>
-#include <asm/ubicom32-common.h>
-#include <asm/processor.h>
-#include <asm/bootargs.h>
-#include <asm/thread.h>
-
-unsigned long memory_start;
-EXPORT_SYMBOL(memory_start);
-
-unsigned long memory_end;
-EXPORT_SYMBOL(memory_end);
-
-static char __initdata command_line[COMMAND_LINE_SIZE];
-#ifdef CONFIG_CMDLINE_BOOL
-static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE;
-#endif
-
-extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
-
-/*
- * setup_arch()
- * Setup the architecture dependent portions of the system.
- */
-void __init setup_arch(char **cmdline_p)
-{
- int bootmap_size;
- unsigned long ram_start;
-
- processor_init();
- bootargs_init();
-
- /*
- * Use the link for memory_start from the link and the processor
- * node for memory_end.
- */
- memory_start = PAGE_ALIGN(((unsigned long)&_end));
- processor_dram(&ram_start, &memory_end);
-
- init_mm.start_code = (unsigned long) &_stext;
- init_mm.end_code = (unsigned long) &_etext;
- init_mm.end_data = (unsigned long) &_edata;
- init_mm.brk = (unsigned long) 0;
-
- /*
- * bootexec copies the original default command line to end of memory.
- * u-boot can modify it there (i.e. to enable network boot) and the
- * kernel picks up the modified version.
- *
- * mainexec creates a `new default' command_line which is in the
- * bootargs devnode. It is updated on every firmware update but
- * not used at the moment.
- */
- strlcpy(boot_command_line, (char *)(memory_end - COMMAND_LINE_SIZE), COMMAND_LINE_SIZE);
-
-#ifdef CONFIG_CMDLINE_BOOL
-#ifdef CONFIG_CMDLINE_OVERRIDE
- strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
-#else
- if (builtin_cmdline[0]) {
- /* append boot loader cmdline to builtin */
- strlcat(builtin_cmdline, " ", COMMAND_LINE_SIZE);
- strlcat(builtin_cmdline, boot_command_line, COMMAND_LINE_SIZE);
- strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
- }
-#endif
-#endif
-
- strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
- *cmdline_p = command_line;
-
- parse_early_param();
-
- printk(KERN_INFO "%s Processor, Ubicom, Inc. <www.ubicom.com>\n", CPU);
-
-#if defined(DEBUG)
- printk(KERN_DEBUG "KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x "
- "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext,
- (int) &_sdata, (int) &_edata,
- (int) &_sbss, (int) &_ebss);
- printk(KERN_DEBUG "MEMORY -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x\n ",
- (int) &_ebss, (int) memory_start,
- (int) memory_start, (int) memory_end);
-#endif
-
-#ifdef DEBUG
- if (strlen(*cmdline_p))
- printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p);
-#endif
-
-#if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
- conswitchp = &dummy_con;
-#endif
-
- /*
- * If we have a device tree, see if we have the nodes we need.
- */
- if (devtree) {
- devtree_print();
- }
-
- /*
- * From the arm initialization comment:
- *
- * This doesn't seem to be used by the Linux memory manager any
- * more, but is used by ll_rw_block. If we can get rid of it, we
- * also get rid of some of the stuff above as well.
- *
- * Note: max_low_pfn and max_pfn reflect the number of _pages_ in
- * the system, not the maximum PFN.
- */
- max_pfn = max_low_pfn = (memory_end - PAGE_OFFSET) >> PAGE_SHIFT;
-
- /*
- * Give all the memory to the bootmap allocator, tell it to put the
- * boot mem_map at the start of memory.
- */
- bootmap_size = init_bootmem_node(
- NODE_DATA(0),
- memory_start >> PAGE_SHIFT, /* map goes here */
- PAGE_OFFSET >> PAGE_SHIFT, /* 0 on coldfire */
- memory_end >> PAGE_SHIFT);
- /*
- * Free the usable memory, we have to make sure we do not free
- * the bootmem bitmap so we then reserve it after freeing it :-)
- */
- free_bootmem(memory_start, memory_end - memory_start);
- reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT);
-
- /*
- * Get kmalloc into gear.
- */
- paging_init();
-
- /*
- * Fix up the thread_info structure, indicate this is a mainline Linux
- * thread and setup the sw_ksp().
- */
- sw_ksp[thread_get_self()] = (unsigned int) current_thread_info();
- thread_set_mainline(thread_get_self());
-}
projects / openwrt / svn-archive / archive.git / blobdiff