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Diffstat (limited to 'arch/m32r/kernel/setup.c')
| -rw-r--r-- | arch/m32r/kernel/setup.c | 424 |
1 files changed, 0 insertions, 424 deletions
diff --git a/arch/m32r/kernel/setup.c b/arch/m32r/kernel/setup.c deleted file mode 100644 index b72d5db39f00..000000000000 --- a/arch/m32r/kernel/setup.c +++ /dev/null @@ -1,424 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * linux/arch/m32r/kernel/setup.c - * - * Setup routines for Renesas M32R - * - * Copyright (c) 2001, 2002 Hiroyuki Kondo, Hirokazu Takata, - * Hitoshi Yamamoto - */ - -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/stddef.h> -#include <linux/fs.h> -#include <linux/sched/mm.h> -#include <linux/ioport.h> -#include <linux/mm.h> -#include <linux/bootmem.h> -#include <linux/console.h> -#include <linux/initrd.h> -#include <linux/major.h> -#include <linux/root_dev.h> -#include <linux/seq_file.h> -#include <linux/timex.h> -#include <linux/screen_info.h> -#include <linux/cpu.h> -#include <linux/nodemask.h> -#include <linux/pfn.h> - -#include <asm/processor.h> -#include <asm/pgtable.h> -#include <asm/io.h> -#include <asm/mmu_context.h> -#include <asm/m32r.h> -#include <asm/setup.h> -#include <asm/sections.h> - -#ifdef CONFIG_MMU -extern void init_mmu(void); -#endif - -extern char _end[]; - -/* - * Machine setup.. - */ -struct cpuinfo_m32r boot_cpu_data; - -#ifdef CONFIG_BLK_DEV_RAM -extern int rd_doload; /* 1 = load ramdisk, 0 = don't load */ -extern int rd_prompt; /* 1 = prompt for ramdisk, 0 = don't prompt */ -extern int rd_image_start; /* starting block # of image */ -#endif - -#if defined(CONFIG_VGA_CONSOLE) -struct screen_info screen_info = { - .orig_video_lines = 25, - .orig_video_cols = 80, - .orig_video_mode = 0, - .orig_video_ega_bx = 0, - .orig_video_isVGA = 1, - .orig_video_points = 8 -}; -#endif - -extern int root_mountflags; - -static char __initdata command_line[COMMAND_LINE_SIZE]; - -static struct resource data_resource = { - .name = "Kernel data", - .start = 0, - .end = 0, - .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM -}; - -static struct resource code_resource = { - .name = "Kernel code", - .start = 0, - .end = 0, - .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM -}; - -unsigned long memory_start; -EXPORT_SYMBOL(memory_start); - -unsigned long memory_end; -EXPORT_SYMBOL(memory_end); - -void __init setup_arch(char **); -int get_cpuinfo(char *); - -static __inline__ void parse_mem_cmdline(char ** cmdline_p) -{ - char c = ' '; - char *to = command_line; - char *from = COMMAND_LINE; - int len = 0; - int usermem = 0; - - /* Save unparsed command line copy for /proc/cmdline */ - memcpy(boot_command_line, COMMAND_LINE, COMMAND_LINE_SIZE); - boot_command_line[COMMAND_LINE_SIZE-1] = '\0'; - - memory_start = (unsigned long)CONFIG_MEMORY_START+PAGE_OFFSET; - memory_end = memory_start+(unsigned long)CONFIG_MEMORY_SIZE; - - for ( ; ; ) { - if (c == ' ' && !memcmp(from, "mem=", 4)) { - if (to != command_line) - to--; - - { - unsigned long mem_size; - - usermem = 1; - mem_size = memparse(from+4, &from); - memory_end = memory_start + mem_size; - } - } - c = *(from++); - if (!c) - break; - - if (COMMAND_LINE_SIZE <= ++len) - break; - - *(to++) = c; - } - *to = '\0'; - *cmdline_p = command_line; - if (usermem) - printk(KERN_INFO "user-defined physical RAM map:\n"); -} - -#ifndef CONFIG_DISCONTIGMEM -static unsigned long __init setup_memory(void) -{ - unsigned long start_pfn, max_low_pfn, bootmap_size; - - start_pfn = PFN_UP( __pa(_end) ); - max_low_pfn = PFN_DOWN( __pa(memory_end) ); - - /* - * Initialize the boot-time allocator (with low memory only): - */ - bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn, - CONFIG_MEMORY_START>>PAGE_SHIFT, max_low_pfn); - - /* - * Register fully available low RAM pages with the bootmem allocator. - */ - { - unsigned long curr_pfn; - unsigned long last_pfn; - unsigned long pages; - - /* - * We are rounding up the start address of usable memory: - */ - curr_pfn = PFN_UP(__pa(memory_start)); - - /* - * ... and at the end of the usable range downwards: - */ - last_pfn = PFN_DOWN(__pa(memory_end)); - - if (last_pfn > max_low_pfn) - last_pfn = max_low_pfn; - - pages = last_pfn - curr_pfn; - free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages)); - } - - /* - * Reserve the kernel text and - * Reserve the bootmem bitmap. We do this in two steps (first step - * was init_bootmem()), because this catches the (definitely buggy) - * case of us accidentally initializing the bootmem allocator with - * an invalid RAM area. - */ - reserve_bootmem(CONFIG_MEMORY_START + PAGE_SIZE, - (PFN_PHYS(start_pfn) + bootmap_size + PAGE_SIZE - 1) - - CONFIG_MEMORY_START, - BOOTMEM_DEFAULT); - - /* - * reserve physical page 0 - it's a special BIOS page on many boxes, - * enabling clean reboots, SMP operation, laptop functions. - */ - reserve_bootmem(CONFIG_MEMORY_START, PAGE_SIZE, BOOTMEM_DEFAULT); - - /* - * reserve memory hole - */ -#ifdef CONFIG_MEMHOLE - reserve_bootmem(CONFIG_MEMHOLE_START, CONFIG_MEMHOLE_SIZE, - BOOTMEM_DEFAULT); -#endif - -#ifdef CONFIG_BLK_DEV_INITRD - if (LOADER_TYPE && INITRD_START) { - if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) { - reserve_bootmem(INITRD_START, INITRD_SIZE, - BOOTMEM_DEFAULT); - initrd_start = INITRD_START + PAGE_OFFSET; - initrd_end = initrd_start + INITRD_SIZE; - printk("initrd:start[%08lx],size[%08lx]\n", - initrd_start, INITRD_SIZE); - } else { - printk("initrd extends beyond end of memory " - "(0x%08lx > 0x%08lx)\ndisabling initrd\n", - INITRD_START + INITRD_SIZE, - max_low_pfn << PAGE_SHIFT); - - initrd_start = 0; - } - } -#endif - - return max_low_pfn; -} -#else /* CONFIG_DISCONTIGMEM */ -extern unsigned long setup_memory(void); -#endif /* CONFIG_DISCONTIGMEM */ - -void __init setup_arch(char **cmdline_p) -{ - ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV); - - boot_cpu_data.cpu_clock = M32R_CPUCLK; - boot_cpu_data.bus_clock = M32R_BUSCLK; - boot_cpu_data.timer_divide = M32R_TIMER_DIVIDE; - -#ifdef CONFIG_BLK_DEV_RAM - rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK; - rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0); - rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0); -#endif - - if (!MOUNT_ROOT_RDONLY) - root_mountflags &= ~MS_RDONLY; - -#ifdef CONFIG_VT -#if defined(CONFIG_VGA_CONSOLE) - conswitchp = &vga_con; -#elif defined(CONFIG_DUMMY_CONSOLE) - conswitchp = &dummy_con; -#endif -#endif - -#ifdef CONFIG_DISCONTIGMEM - nodes_clear(node_online_map); - node_set_online(0); - node_set_online(1); -#endif /* CONFIG_DISCONTIGMEM */ - - init_mm.start_code = (unsigned long) _text; - init_mm.end_code = (unsigned long) _etext; - init_mm.end_data = (unsigned long) _edata; - init_mm.brk = (unsigned long) _end; - - code_resource.start = virt_to_phys(_text); - code_resource.end = virt_to_phys(_etext)-1; - data_resource.start = virt_to_phys(_etext); - data_resource.end = virt_to_phys(_edata)-1; - - parse_mem_cmdline(cmdline_p); - - setup_memory(); - - paging_init(); -} - -static struct cpu cpu_devices[NR_CPUS]; - -static int __init topology_init(void) -{ - int i; - - for_each_present_cpu(i) - register_cpu(&cpu_devices[i], i); - - return 0; -} - -subsys_initcall(topology_init); - -#ifdef CONFIG_PROC_FS -/* - * Get CPU information for use by the procfs. - */ -static int show_cpuinfo(struct seq_file *m, void *v) -{ - struct cpuinfo_m32r *c = v; - unsigned long cpu = c - cpu_data; - -#ifdef CONFIG_SMP - if (!cpu_online(cpu)) - return 0; -#endif /* CONFIG_SMP */ - - seq_printf(m, "processor\t: %ld\n", cpu); - -#if defined(CONFIG_CHIP_VDEC2) - seq_printf(m, "cpu family\t: VDEC2\n" - "cache size\t: Unknown\n"); -#elif defined(CONFIG_CHIP_M32700) - seq_printf(m,"cpu family\t: M32700\n" - "cache size\t: I-8KB/D-8KB\n"); -#elif defined(CONFIG_CHIP_M32102) - seq_printf(m,"cpu family\t: M32102\n" - "cache size\t: I-8KB\n"); -#elif defined(CONFIG_CHIP_OPSP) - seq_printf(m,"cpu family\t: OPSP\n" - "cache size\t: I-8KB/D-8KB\n"); -#elif defined(CONFIG_CHIP_MP) - seq_printf(m, "cpu family\t: M32R-MP\n" - "cache size\t: I-xxKB/D-xxKB\n"); -#elif defined(CONFIG_CHIP_M32104) - seq_printf(m,"cpu family\t: M32104\n" - "cache size\t: I-8KB/D-8KB\n"); -#else - seq_printf(m, "cpu family\t: Unknown\n"); -#endif - seq_printf(m, "bogomips\t: %lu.%02lu\n", - c->loops_per_jiffy/(500000/HZ), - (c->loops_per_jiffy/(5000/HZ)) % 100); -#if defined(CONFIG_PLAT_MAPPI) - seq_printf(m, "Machine\t\t: Mappi Evaluation board\n"); -#elif defined(CONFIG_PLAT_MAPPI2) - seq_printf(m, "Machine\t\t: Mappi-II Evaluation board\n"); -#elif defined(CONFIG_PLAT_MAPPI3) - seq_printf(m, "Machine\t\t: Mappi-III Evaluation board\n"); -#elif defined(CONFIG_PLAT_M32700UT) - seq_printf(m, "Machine\t\t: M32700UT Evaluation board\n"); -#elif defined(CONFIG_PLAT_OPSPUT) - seq_printf(m, "Machine\t\t: OPSPUT Evaluation board\n"); -#elif defined(CONFIG_PLAT_USRV) - seq_printf(m, "Machine\t\t: uServer\n"); -#elif defined(CONFIG_PLAT_OAKS32R) - seq_printf(m, "Machine\t\t: OAKS32R\n"); -#elif defined(CONFIG_PLAT_M32104UT) - seq_printf(m, "Machine\t\t: M3T-M32104UT uT Engine board\n"); -#else - seq_printf(m, "Machine\t\t: Unknown\n"); -#endif - -#define PRINT_CLOCK(name, value) \ - seq_printf(m, name " clock\t: %d.%02dMHz\n", \ - ((value) / 1000000), ((value) % 1000000)/10000) - - PRINT_CLOCK("CPU", (int)c->cpu_clock); - PRINT_CLOCK("Bus", (int)c->bus_clock); - - seq_printf(m, "\n"); - - return 0; -} - -static void *c_start(struct seq_file *m, loff_t *pos) -{ - return *pos < NR_CPUS ? cpu_data + *pos : 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, -}; -#endif /* CONFIG_PROC_FS */ - -unsigned long cpu_initialized __initdata = 0; - -/* - * cpu_init() initializes state that is per-CPU. Some data is already - * initialized (naturally) in the bootstrap process. - * We reload them nevertheless, this function acts as a - * 'CPU state barrier', nothing should get across. - */ -#if defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_XNUX2) \ - || defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_M32102) \ - || defined(CONFIG_CHIP_OPSP) || defined(CONFIG_CHIP_M32104) -void __init cpu_init (void) -{ - int cpu_id = smp_processor_id(); - - if (test_and_set_bit(cpu_id, &cpu_initialized)) { - printk(KERN_WARNING "CPU#%d already initialized!\n", cpu_id); - for ( ; ; ) - local_irq_enable(); - } - printk(KERN_INFO "Initializing CPU#%d\n", cpu_id); - - /* Set up and load the per-CPU TSS and LDT */ - mmgrab(&init_mm); - current->active_mm = &init_mm; - if (current->mm) - BUG(); - - /* Force FPU initialization */ - current_thread_info()->status = 0; - clear_used_math(); - -#ifdef CONFIG_MMU - /* Set up MMU */ - init_mmu(); -#endif - - /* Set up ICUIMASK */ - outl(0x00070000, M32R_ICU_IMASK_PORTL); /* imask=111 */ -} -#endif /* defined(CONFIG_CHIP_VDEC2) ... */ |