diff options
Diffstat (limited to 'arch/h8300/kernel/setup.c')
| -rw-r--r-- | arch/h8300/kernel/setup.c | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/arch/h8300/kernel/setup.c b/arch/h8300/kernel/setup.c deleted file mode 100644 index 6be15d634650..000000000000 --- a/arch/h8300/kernel/setup.c +++ /dev/null @@ -1,250 +0,0 @@ -/* - * linux/arch/h8300/kernel/setup.c - * - * Copyright (C) 2001-2014 Yoshinori Sato <ysato@users.sourceforge.jp> - */ - -/* - * 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/mm.h> -#include <linux/fs.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 <linux/of.h> -#include <linux/of_fdt.h> -#include <linux/of_platform.h> -#include <linux/of_address.h> -#include <linux/clk-provider.h> -#include <linux/memblock.h> -#include <linux/screen_info.h> -#include <linux/clocksource.h> - -#include <asm/setup.h> -#include <asm/irq.h> -#include <asm/pgtable.h> -#include <asm/sections.h> -#include <asm/page.h> - -#if defined(CONFIG_CPU_H8300H) -#define CPU "H8/300H" -#elif defined(CONFIG_CPU_H8S) -#define CPU "H8S" -#else -#define CPU "Unknown" -#endif - -unsigned long memory_start; -unsigned long memory_end; -EXPORT_SYMBOL(memory_end); -static unsigned long freq; -extern char __dtb_start[]; - -#ifdef CONFIG_VT -struct screen_info screen_info; -#endif - -char __initdata command_line[COMMAND_LINE_SIZE]; - -void sim_console_register(void); - -void __init h8300_fdt_init(void *fdt, char *bootargs) -{ - if (!fdt) - fdt = __dtb_start; - else - strcpy(command_line, bootargs); - - early_init_dt_scan(fdt); - memblock_allow_resize(); -} - -static void __init bootmem_init(void) -{ - int bootmap_size; - unsigned long ram_start_pfn; - unsigned long free_ram_start_pfn; - unsigned long ram_end_pfn; - struct memblock_region *region; - - memory_end = memory_start = 0; - - /* Find main memory where is the kernel */ - for_each_memblock(memory, region) { - memory_start = region->base; - memory_end = region->base + region->size; - } - - if (!memory_end) - panic("No memory!"); - - ram_start_pfn = PFN_UP(memory_start); - /* free_ram_start_pfn is first page after kernel */ - free_ram_start_pfn = PFN_UP(__pa(_end)); - ram_end_pfn = PFN_DOWN(memblock_end_of_DRAM()); - - max_pfn = ram_end_pfn; - - /* - * 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), - free_ram_start_pfn, - 0, - ram_end_pfn); - /* - * 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(PFN_PHYS(free_ram_start_pfn), - (ram_end_pfn - free_ram_start_pfn) << PAGE_SHIFT); - reserve_bootmem(PFN_PHYS(free_ram_start_pfn), bootmap_size, - BOOTMEM_DEFAULT); - - for_each_memblock(reserved, region) { - reserve_bootmem(region->base, region->size, BOOTMEM_DEFAULT); - } -} - -void __init setup_arch(char **cmdline_p) -{ - unflatten_and_copy_device_tree(); - - 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; - - pr_notice("\r\n\nuClinux " CPU "\n"); - pr_notice("Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n"); - - if (*command_line) - strcpy(boot_command_line, command_line); - *cmdline_p = boot_command_line; - - parse_early_param(); - - bootmem_init(); - /* - * 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; - - cpu = CPU; - - seq_printf(m, "CPU:\t\t%s\n" - "Clock:\t\t%lu.%1luMHz\n" - "BogoMips:\t%lu.%02lu\n" - "Calibration:\t%lu loops\n", - cpu, - freq/1000, freq%1000, - (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 < num_possible_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, -}; - -static int __init device_probe(void) -{ - of_platform_populate(NULL, NULL, NULL, NULL); - - return 0; -} - -device_initcall(device_probe); - -#if defined(CONFIG_CPU_H8300H) -#define get_wait(base, addr) ({ \ - int baddr; \ - baddr = ((addr) / 0x200000 * 2); \ - w *= (readw((base) + 2) & (3 << baddr)) + 1; \ - }) -#endif -#if defined(CONFIG_CPU_H8S) -#define get_wait(base, addr) ({ \ - int baddr; \ - baddr = ((addr) / 0x200000 * 16); \ - w *= (readl((base) + 2) & (7 << baddr)) + 1; \ - }) -#endif - -static __init int access_timing(void) -{ - struct device_node *bsc; - void __iomem *base; - unsigned long addr = (unsigned long)&__delay; - int bit = 1 << (addr / 0x200000); - int w; - - bsc = of_find_compatible_node(NULL, NULL, "renesas,h8300-bsc"); - base = of_iomap(bsc, 0); - w = (readb(base + 0) & bit)?2:1; - if (readb(base + 1) & bit) - w *= get_wait(base, addr); - else - w *= 2; - return w * 3 / 2; -} - -void __init calibrate_delay(void) -{ - struct device_node *cpu; - int freq; - - cpu = of_find_compatible_node(NULL, NULL, "renesas,h8300"); - of_property_read_s32(cpu, "clock-frequency", &freq); - loops_per_jiffy = freq / HZ / (access_timing() * 2); - pr_cont("%lu.%02lu BogoMIPS (lpj=%lu)\n", - loops_per_jiffy / (500000 / HZ), - (loops_per_jiffy / (5000 / HZ)) % 100, loops_per_jiffy); -} - - -void __init time_init(void) -{ - of_clk_init(NULL); - timer_probe(); -} |