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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a3595962d8
Remove the obsolete Motorola/Freescale 68360 SoC support. It has been bit rotting for many years with little active use in mainlne. There has been no serial driver support for many years, so it is largely not useful in its current state. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
313 lines
8.7 KiB
C
313 lines
8.7 KiB
C
/*
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* linux/arch/m68knommu/kernel/setup.c
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*
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* Copyright (C) 1999-2007 Greg Ungerer (gerg@snapgear.com)
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* Copyright (C) 1998,1999 D. Jeff Dionne <jeff@uClinux.org>
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* Copyleft ()) 2000 James D. Schettine {james@telos-systems.com}
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* Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>
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* Copyright (C) 1995 Hamish Macdonald
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* Copyright (C) 2000 Lineo Inc. (www.lineo.com)
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* Copyright (C) 2001 Lineo, Inc. <www.lineo.com>
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*
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* 68VZ328 Fixes/support Evan Stawnyczy <e@lineo.ca>
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*/
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/*
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* This file handles the architecture-dependent parts of system setup
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*/
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/fb.h>
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#include <linux/module.h>
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#include <linux/mm.h>
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#include <linux/console.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/bootmem.h>
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#include <linux/seq_file.h>
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#include <linux/init.h>
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#include <linux/initrd.h>
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#include <linux/root_dev.h>
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#include <linux/rtc.h>
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#include <asm/setup.h>
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#include <asm/irq.h>
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#include <asm/machdep.h>
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#include <asm/pgtable.h>
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#include <asm/sections.h>
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unsigned long memory_start;
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unsigned long memory_end;
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EXPORT_SYMBOL(memory_start);
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EXPORT_SYMBOL(memory_end);
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char __initdata command_line[COMMAND_LINE_SIZE];
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/* machine dependent timer functions */
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void (*mach_sched_init)(irq_handler_t handler) __initdata = NULL;
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int (*mach_set_clock_mmss)(unsigned long);
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int (*mach_hwclk) (int, struct rtc_time*);
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/* machine dependent reboot functions */
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void (*mach_reset)(void);
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void (*mach_halt)(void);
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void (*mach_power_off)(void);
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#ifdef CONFIG_M68000
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#if defined(CONFIG_M68328)
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#define CPU_NAME "MC68328"
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#elif defined(CONFIG_M68EZ328)
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#define CPU_NAME "MC68EZ328"
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#elif defined(CONFIG_M68VZ328)
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#define CPU_NAME "MC68VZ328"
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#else
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#define CPU_NAME "MC68000"
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#endif
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#endif /* CONFIG_M68000 */
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#ifndef CPU_NAME
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#define CPU_NAME "UNKNOWN"
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#endif
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/*
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* Different cores have different instruction execution timings.
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* The old/traditional 68000 cores are basically all the same, at 16.
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* The ColdFire cores vary a little, their values are defined in their
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* headers. We default to the standard 68000 value here.
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*/
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#ifndef CPU_INSTR_PER_JIFFY
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#define CPU_INSTR_PER_JIFFY 16
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#endif
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#if defined(CONFIG_UBOOT)
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/*
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* parse_uboot_commandline
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*
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* Copies u-boot commandline arguments and store them in the proper linux
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* variables.
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*
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* Assumes:
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* _init_sp global contains the address in the stack pointer when the
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* kernel starts (see head.S::_start)
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*
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* U-Boot calling convention:
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* (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
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*
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* _init_sp can be parsed as such
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*
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* _init_sp+00 = u-boot cmd after jsr into kernel (skip)
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* _init_sp+04 = &kernel board_info (residual data)
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* _init_sp+08 = &initrd_start
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* _init_sp+12 = &initrd_end
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* _init_sp+16 = &cmd_start
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* _init_sp+20 = &cmd_end
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*
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* This also assumes that the memory locations pointed to are still
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* unmodified. U-boot places them near the end of external SDRAM.
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*
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* Argument(s):
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* commandp = the linux commandline arg container to fill.
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* size = the sizeof commandp.
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*
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* Returns:
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*/
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static void __init parse_uboot_commandline(char *commandp, int size)
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{
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extern unsigned long _init_sp;
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unsigned long *sp;
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unsigned long uboot_kbd;
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unsigned long uboot_initrd_start, uboot_initrd_end;
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unsigned long uboot_cmd_start, uboot_cmd_end;
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sp = (unsigned long *)_init_sp;
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uboot_kbd = sp[1];
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uboot_initrd_start = sp[2];
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uboot_initrd_end = sp[3];
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uboot_cmd_start = sp[4];
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uboot_cmd_end = sp[5];
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if (uboot_cmd_start && uboot_cmd_end)
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strncpy(commandp, (const char *)uboot_cmd_start, size);
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#if defined(CONFIG_BLK_DEV_INITRD)
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if (uboot_initrd_start && uboot_initrd_end &&
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(uboot_initrd_end > uboot_initrd_start)) {
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initrd_start = uboot_initrd_start;
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initrd_end = uboot_initrd_end;
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ROOT_DEV = Root_RAM0;
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printk(KERN_INFO "initrd at 0x%lx:0x%lx\n",
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initrd_start, initrd_end);
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}
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#endif /* if defined(CONFIG_BLK_DEV_INITRD) */
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}
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#endif /* #if defined(CONFIG_UBOOT) */
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void __init setup_arch(char **cmdline_p)
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{
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int bootmap_size;
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memory_start = PAGE_ALIGN(_ramstart);
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memory_end = _ramend;
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init_mm.start_code = (unsigned long) &_stext;
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init_mm.end_code = (unsigned long) &_etext;
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init_mm.end_data = (unsigned long) &_edata;
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init_mm.brk = (unsigned long) 0;
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config_BSP(&command_line[0], sizeof(command_line));
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#if defined(CONFIG_BOOTPARAM)
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strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line));
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command_line[sizeof(command_line) - 1] = 0;
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#endif /* CONFIG_BOOTPARAM */
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#if defined(CONFIG_UBOOT)
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/* CONFIG_UBOOT and CONFIG_BOOTPARAM defined, concatenate cmdline */
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#if defined(CONFIG_BOOTPARAM)
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/* Add the whitespace separator */
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command_line[strlen(CONFIG_BOOTPARAM_STRING)] = ' ';
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/* Parse uboot command line into the rest of the buffer */
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parse_uboot_commandline(
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&command_line[(strlen(CONFIG_BOOTPARAM_STRING)+1)],
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(sizeof(command_line) -
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(strlen(CONFIG_BOOTPARAM_STRING)+1)));
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/* Only CONFIG_UBOOT defined, create cmdline */
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#else
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parse_uboot_commandline(&command_line[0], sizeof(command_line));
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#endif /* CONFIG_BOOTPARAM */
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command_line[sizeof(command_line) - 1] = 0;
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#endif /* CONFIG_UBOOT */
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printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU_NAME "\n");
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#ifdef CONFIG_UCDIMM
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printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
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#endif
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#ifdef CONFIG_M68VZ328
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printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
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#endif
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#ifdef CONFIG_COLDFIRE
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printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
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#ifdef CONFIG_M5307
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printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
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#endif
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#ifdef CONFIG_ELITE
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printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
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#endif
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#endif
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printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
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#if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
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printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
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#endif
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#if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
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printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
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#endif
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#ifdef CONFIG_DRAGEN2
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printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
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#endif
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#ifdef CONFIG_M5235EVB
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printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n");
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#endif
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pr_debug("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n",
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_stext, _etext, _sdata, _edata, __bss_start, __bss_stop);
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pr_debug("MEMORY -> ROMFS=0x%p-0x%06lx MEM=0x%06lx-0x%06lx\n ",
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__bss_stop, memory_start, memory_start, memory_end);
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/* Keep a copy of command line */
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*cmdline_p = &command_line[0];
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memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
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boot_command_line[COMMAND_LINE_SIZE-1] = 0;
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#if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
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conswitchp = &dummy_con;
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#endif
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/*
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* Give all the memory to the bootmap allocator, tell it to put the
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* boot mem_map at the start of memory.
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*/
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min_low_pfn = PFN_DOWN(memory_start);
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max_pfn = max_low_pfn = PFN_DOWN(memory_end);
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bootmap_size = init_bootmem_node(
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NODE_DATA(0),
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min_low_pfn, /* map goes here */
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PFN_DOWN(PAGE_OFFSET),
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max_pfn);
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/*
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* Free the usable memory, we have to make sure we do not free
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* the bootmem bitmap so we then reserve it after freeing it :-)
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*/
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free_bootmem(memory_start, memory_end - memory_start);
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reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT);
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#if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD)
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if ((initrd_start > 0) && (initrd_start < initrd_end) &&
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(initrd_end < memory_end))
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reserve_bootmem(initrd_start, initrd_end - initrd_start,
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BOOTMEM_DEFAULT);
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#endif /* if defined(CONFIG_BLK_DEV_INITRD) */
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/*
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* Get kmalloc into gear.
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*/
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paging_init();
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}
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/*
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* Get CPU information for use by the procfs.
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*/
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static int show_cpuinfo(struct seq_file *m, void *v)
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{
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char *cpu, *mmu, *fpu;
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u_long clockfreq;
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cpu = CPU_NAME;
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mmu = "none";
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fpu = "none";
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clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY;
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seq_printf(m, "CPU:\t\t%s\n"
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"MMU:\t\t%s\n"
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"FPU:\t\t%s\n"
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"Clocking:\t%lu.%1luMHz\n"
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"BogoMips:\t%lu.%02lu\n"
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"Calibration:\t%lu loops\n",
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cpu, mmu, fpu,
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clockfreq / 1000000,
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(clockfreq / 100000) % 10,
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(loops_per_jiffy * HZ) / 500000,
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((loops_per_jiffy * HZ) / 5000) % 100,
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(loops_per_jiffy * HZ));
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return 0;
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}
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static void *c_start(struct seq_file *m, loff_t *pos)
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{
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return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
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}
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static void *c_next(struct seq_file *m, void *v, loff_t *pos)
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{
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++*pos;
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return c_start(m, pos);
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}
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static void c_stop(struct seq_file *m, void *v)
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{
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}
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const struct seq_operations cpuinfo_op = {
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.start = c_start,
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.next = c_next,
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.stop = c_stop,
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.show = show_cpuinfo,
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};
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