arch/m68k/kernel/setup_no.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 /*
  *  linux/arch/m68knommu/kernel/setup.c
  *
  *  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 handles the architecture-dependent parts of system setup
  */

 #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/mm.h>
 #include <linux/console.h>
 #include <linux/errno.h>
 #include <linux/string.h>
 #include <linux/memblock.h>
 #include <linux/seq_file.h>
 #include <linux/init.h>
 #include <linux/initrd.h>
 #include <linux/root_dev.h>
 #include <linux/rtc.h>

 #include <asm/setup.h>
 #include <asm/bootinfo.h>
 #include <asm/irq.h>
 #include <asm/machdep.h>
 #include <asm/sections.h>

 unsigned long memory_start;
 unsigned long memory_end;

 EXPORT_SYMBOL(memory_start);
 EXPORT_SYMBOL(memory_end);

 char __initdata command_line[COMMAND_LINE_SIZE];

 /* machine dependent timer functions */
 void (*mach_sched_init)(void) __initdata = NULL;
 int (*mach_hwclk) (int, struct rtc_time*);

 /* machine dependent reboot functions */
 void (*mach_reset)(void);
 void (*mach_halt)(void);
 void (*mach_power_off)(void);

 #ifdef CONFIG_M68000
 #if defined(CONFIG_M68328)
 #define CPU_NAME	"MC68328"
 #elif defined(CONFIG_M68EZ328)
 #define CPU_NAME	"MC68EZ328"
 #elif defined(CONFIG_M68VZ328)
 #define CPU_NAME	"MC68VZ328"
 #else
 #define CPU_NAME	"MC68000"
 #endif
 #endif /* CONFIG_M68000 */
 #ifndef CPU_NAME
 #define	CPU_NAME	"UNKNOWN"
 #endif

 /*
  * Different cores have different instruction execution timings.
  * The old/traditional 68000 cores are basically all the same, at 16.
  * The ColdFire cores vary a little, their values are defined in their
  * headers. We default to the standard 68000 value here.
  */
 #ifndef CPU_INSTR_PER_JIFFY
 #define	CPU_INSTR_PER_JIFFY	16
 #endif

 void __init setup_arch(char **cmdline_p)
 {
 	memory_start = PAGE_ALIGN(_ramstart);
 	memory_end = _ramend;

 	setup_initial_init_mm(_stext, _etext, _edata, NULL);

 	config_BSP(&command_line[0], sizeof(command_line));

 #if defined(CONFIG_BOOTPARAM)
 	strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line));
 	command_line[sizeof(command_line) - 1] = 0;
 #endif /* CONFIG_BOOTPARAM */

 	process_uboot_commandline(&command_line[0], sizeof(command_line));

 	pr_info("uClinux with CPU " CPU_NAME "\n");

 #ifdef CONFIG_UCDIMM
 	pr_info("uCdimm by Lineo, Inc. <www.lineo.com>\n");
 #endif
 #ifdef CONFIG_M68328
 	pr_info("68328 support D. Jeff Dionne <jeff@uclinux.org>\n");
 	pr_info("68328 support Kenneth Albanowski <kjahds@kjshds.com>\n");
 #endif
 #ifdef CONFIG_M68EZ328
 	pr_info("68EZ328 DragonBallEZ support (C) 1999 Rt-Control, Inc\n");
 #endif
 #ifdef CONFIG_M68VZ328
 	pr_info("M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
 	pr_info("68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n");
 #endif
 #ifdef CONFIG_COLDFIRE
 	pr_info("COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
 #ifdef CONFIG_M5307
 	pr_info("Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
 #endif
 #ifdef CONFIG_ELITE
 	pr_info("Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
 #endif
 #endif
 	pr_info("Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");

 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
 	pr_info("68328/Pilot support Bernhard Kuhn <kuhn@lpr.e-technik.tu-muenchen.de>\n");
 	pr_info("TRG SuperPilot FLASH card support <info@trgnet.com>\n");
 #endif
 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
 	pr_info("PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
 #endif
 #ifdef CONFIG_DRAGEN2
 	pr_info("DragonEngine II board support by Georges Menie\n");
 #endif
 #ifdef CONFIG_M5235EVB
 	pr_info("Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n");
 #endif

 	pr_debug("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n",
 		 _stext, _etext, _sdata, _edata, __bss_start, __bss_stop);
 	pr_debug("MEMORY -> ROMFS=0x%p-0x%06lx MEM=0x%06lx-0x%06lx\n ",
 		 __bss_stop, memory_start, memory_start, memory_end);

 	memblock_add(_rambase, memory_end - _rambase);
 	memblock_reserve(_rambase, memory_start - _rambase);

 	/* Keep a copy of command line */
 	*cmdline_p = &command_line[0];
 	memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
 	boot_command_line[COMMAND_LINE_SIZE-1] = 0;

 	/*
 	 * Give all the memory to the bootmap allocator, tell it to put the
 	 * boot mem_map at the start of memory.
 	 */
 	min_low_pfn = PFN_DOWN(memory_start);
 	max_pfn = max_low_pfn = PFN_DOWN(memory_end);

 #if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD)
 	if ((initrd_start > 0) && (initrd_start < initrd_end) &&
 			(initrd_end < memory_end))
 		memblock_reserve(initrd_start, initrd_end - initrd_start);
 #endif /* if defined(CONFIG_BLK_DEV_INITRD) */

 	/*
 	 * Get kmalloc into gear.
 	 */
 	paging_init();
 }

 /*
  *	Get CPU information for use by the procfs.
  */
 static int show_cpuinfo(struct seq_file *m, void *v)
 {
 	char *cpu, *mmu, *fpu;
 	u_long clockfreq;

 	cpu = CPU_NAME;
 	mmu = "none";
 	fpu = "none";
 	clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY;

 	seq_printf(m, "CPU:\t\t%s\n"
 		      "MMU:\t\t%s\n"
 		      "FPU:\t\t%s\n"
 		      "Clocking:\t%lu.%1luMHz\n"
 		      "BogoMips:\t%lu.%02lu\n"
 		      "Calibration:\t%lu loops\n",
 		      cpu, mmu, fpu,
 		      clockfreq / 1000000,
 		      (clockfreq / 100000) % 10,
 		      (loops_per_jiffy * HZ) / 500000,
 		      ((loops_per_jiffy * HZ) / 5000) % 100,
 		      (loops_per_jiffy * HZ));

 	return 0;
 }

 static void *c_start(struct seq_file *m, loff_t *pos)
 {
 	return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
 }

 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 {
 	++*pos;
 	return c_start(m, pos);
 }

 static void c_stop(struct seq_file *m, void *v)
 {
 }

 const struct seq_operations cpuinfo_op = {
 	.start	= c_start,
 	.next	= c_next,
 	.stop	= c_stop,
 	.show	= show_cpuinfo,
 };
	// SPDX-License-Identifier: GPL-2.0
	/*
	* linux/arch/m68knommu/kernel/setup.c
	*
	* 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 handles the architecture-dependent parts of system setup
	*/

	#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/mm.h>
	#include <linux/console.h>
	#include <linux/errno.h>
	#include <linux/string.h>
	#include <linux/memblock.h>
	#include <linux/seq_file.h>
	#include <linux/init.h>
	#include <linux/initrd.h>
	#include <linux/root_dev.h>
	#include <linux/rtc.h>

	#include <asm/setup.h>
	#include <asm/bootinfo.h>
	#include <asm/irq.h>
	#include <asm/machdep.h>
	#include <asm/sections.h>

	unsigned long memory_start;
	unsigned long memory_end;

	EXPORT_SYMBOL(memory_start);
	EXPORT_SYMBOL(memory_end);

	char __initdata command_line[COMMAND_LINE_SIZE];

	/* machine dependent timer functions */
	void (*mach_sched_init)(void) __initdata = NULL;
	int (mach_hwclk) (int, struct rtc_time);

	/* machine dependent reboot functions */
	void (*mach_reset)(void);
	void (*mach_halt)(void);
	void (*mach_power_off)(void);

	#ifdef CONFIG_M68000
	#if defined(CONFIG_M68328)
	#define CPU_NAME "MC68328"
	#elif defined(CONFIG_M68EZ328)
	#define CPU_NAME "MC68EZ328"
	#elif defined(CONFIG_M68VZ328)
	#define CPU_NAME "MC68VZ328"
	#else
	#define CPU_NAME "MC68000"
	#endif
	#endif /* CONFIG_M68000 */
	#ifndef CPU_NAME
	#define CPU_NAME "UNKNOWN"
	#endif

	/*
	* Different cores have different instruction execution timings.
	* The old/traditional 68000 cores are basically all the same, at 16.
	* The ColdFire cores vary a little, their values are defined in their
	* headers. We default to the standard 68000 value here.
	*/
	#ifndef CPU_INSTR_PER_JIFFY
	#define CPU_INSTR_PER_JIFFY 16
	#endif

	void __init setup_arch(char **cmdline_p)
	{
	memory_start = PAGE_ALIGN(_ramstart);
	memory_end = _ramend;

	setup_initial_init_mm(_stext, _etext, _edata, NULL);

	config_BSP(&command_line[0], sizeof(command_line));

	#if defined(CONFIG_BOOTPARAM)
	strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line));
	command_line[sizeof(command_line) - 1] = 0;
	#endif /* CONFIG_BOOTPARAM */

	process_uboot_commandline(&command_line[0], sizeof(command_line));

	pr_info("uClinux with CPU " CPU_NAME "\n");

	#ifdef CONFIG_UCDIMM
	pr_info("uCdimm by Lineo, Inc. <www.lineo.com>\n");
	#endif
	#ifdef CONFIG_M68328
	pr_info("68328 support D. Jeff Dionne <jeff@uclinux.org>\n");
	pr_info("68328 support Kenneth Albanowski <kjahds@kjshds.com>\n");
	#endif
	#ifdef CONFIG_M68EZ328
	pr_info("68EZ328 DragonBallEZ support (C) 1999 Rt-Control, Inc\n");
	#endif
	#ifdef CONFIG_M68VZ328
	pr_info("M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
	pr_info("68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n");
	#endif
	#ifdef CONFIG_COLDFIRE
	pr_info("COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
	#ifdef CONFIG_M5307
	pr_info("Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
	#endif
	#ifdef CONFIG_ELITE
	pr_info("Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
	#endif
	#endif
	pr_info("Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");

	#if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
	pr_info("68328/Pilot support Bernhard Kuhn <kuhn@lpr.e-technik.tu-muenchen.de>\n");
	pr_info("TRG SuperPilot FLASH card support <info@trgnet.com>\n");
	#endif
	#if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
	pr_info("PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
	#endif
	#ifdef CONFIG_DRAGEN2
	pr_info("DragonEngine II board support by Georges Menie\n");
	#endif
	#ifdef CONFIG_M5235EVB
	pr_info("Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n");
	#endif

	pr_debug("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n",
	_stext, _etext, _sdata, _edata, __bss_start, __bss_stop);
	pr_debug("MEMORY -> ROMFS=0x%p-0x%06lx MEM=0x%06lx-0x%06lx\n ",
	__bss_stop, memory_start, memory_start, memory_end);

	memblock_add(_rambase, memory_end - _rambase);
	memblock_reserve(_rambase, memory_start - _rambase);

	/* Keep a copy of command line */
	*cmdline_p = &command_line[0];
	memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
	boot_command_line[COMMAND_LINE_SIZE-1] = 0;

	/*
	* Give all the memory to the bootmap allocator, tell it to put the
	* boot mem_map at the start of memory.
	*/
	min_low_pfn = PFN_DOWN(memory_start);
	max_pfn = max_low_pfn = PFN_DOWN(memory_end);

	#if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD)
	if ((initrd_start > 0) && (initrd_start < initrd_end) &&
	(initrd_end < memory_end))
	memblock_reserve(initrd_start, initrd_end - initrd_start);
	#endif /* if defined(CONFIG_BLK_DEV_INITRD) */

	/*
	* Get kmalloc into gear.
	*/
	paging_init();
	}

	/*
	* Get CPU information for use by the procfs.
	*/
	static int show_cpuinfo(struct seq_file m, void v)
	{
	char cpu, mmu, *fpu;
	u_long clockfreq;

	cpu = CPU_NAME;
	mmu = "none";
	fpu = "none";
	clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY;

	seq_printf(m, "CPU:\t\t%s\n"
	"MMU:\t\t%s\n"
	"FPU:\t\t%s\n"
	"Clocking:\t%lu.%1luMHz\n"
	"BogoMips:\t%lu.%02lu\n"
	"Calibration:\t%lu loops\n",
	cpu, mmu, fpu,
	clockfreq / 1000000,
	(clockfreq / 100000) % 10,
	(loops_per_jiffy * HZ) / 500000,
	((loops_per_jiffy * HZ) / 5000) % 100,
	(loops_per_jiffy * HZ));

	return 0;
	}

	static void c_start(struct seq_file m, loff_t *pos)
	{
	return pos < NR_CPUS ? ((void ) 0x12345678) : NULL;
	}

	static void c_next(struct seq_file m, void v, loff_t pos)
	{
	++*pos;
	return c_start(m, pos);
	}

	static void c_stop(struct seq_file m, void v)
	{
	}

	const struct seq_operations cpuinfo_op = {
	.start = c_start,
	.next = c_next,
	.stop = c_stop,
	.show = show_cpuinfo,
	};