diff options
Diffstat (limited to 'arch/v850/kernel/setup.c')
| -rw-r--r-- | arch/v850/kernel/setup.c | 330 |
1 files changed, 0 insertions, 330 deletions
diff --git a/arch/v850/kernel/setup.c b/arch/v850/kernel/setup.c deleted file mode 100644 index a0a8456a843..00000000000 --- a/arch/v850/kernel/setup.c +++ /dev/null @@ -1,330 +0,0 @@ -/* - * arch/v850/kernel/setup.c -- Arch-dependent initialization functions - * - * Copyright (C) 2001,02,03,05,06 NEC Electronics Corporation - * Copyright (C) 2001,02,03,05,06 Miles Bader <miles@gnu.org> - * - * This file is subject to the terms and conditions of the GNU General - * Public License. See the file COPYING in the main directory of this - * archive for more details. - * - * Written by Miles Bader <miles@gnu.org> - */ - -#include <linux/mm.h> -#include <linux/bootmem.h> -#include <linux/swap.h> /* we don't have swap, but for nr_free_pages */ -#include <linux/irq.h> -#include <linux/reboot.h> -#include <linux/personality.h> -#include <linux/major.h> -#include <linux/root_dev.h> -#include <linux/mtd/mtd.h> -#include <linux/init.h> - -#include <asm/irq.h> -#include <asm/setup.h> - -#include "mach.h" - -/* These symbols are all defined in the linker map to delineate various - statically allocated regions of memory. */ - -extern char _intv_start, _intv_end; -/* `kram' is only used if the kernel uses part of normal user RAM. */ -extern char _kram_start __attribute__ ((__weak__)); -extern char _kram_end __attribute__ ((__weak__)); -extern char _init_start, _init_end; -extern char _bootmap; -extern char _stext, _etext, _sdata, _edata, _sbss, _ebss; -/* Many platforms use an embedded root image. */ -extern char _root_fs_image_start __attribute__ ((__weak__)); -extern char _root_fs_image_end __attribute__ ((__weak__)); - - -char __initdata command_line[COMMAND_LINE_SIZE]; - -/* Memory not used by the kernel. */ -static unsigned long total_ram_pages; - -/* System RAM. */ -static unsigned long ram_start = 0, ram_len = 0; - - -#define ADDR_TO_PAGE_UP(x) ((((unsigned long)x) + PAGE_SIZE-1) >> PAGE_SHIFT) -#define ADDR_TO_PAGE(x) (((unsigned long)x) >> PAGE_SHIFT) -#define PAGE_TO_ADDR(x) (((unsigned long)x) << PAGE_SHIFT) - -static void init_mem_alloc (unsigned long ram_start, unsigned long ram_len); - -void set_mem_root (void *addr, size_t len, char *cmd_line); - - -void __init setup_arch (char **cmdline) -{ - /* Keep a copy of command line */ - *cmdline = command_line; - memcpy (boot_command_line, command_line, COMMAND_LINE_SIZE); - boot_command_line[COMMAND_LINE_SIZE - 1] = '\0'; - - console_verbose (); - - 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) &_kram_end; - - /* Find out what mem this machine has. */ - mach_get_physical_ram (&ram_start, &ram_len); - /* ... and tell the kernel about it. */ - init_mem_alloc (ram_start, ram_len); - - printk (KERN_INFO "CPU: %s\nPlatform: %s\n", - CPU_MODEL_LONG, PLATFORM_LONG); - - /* do machine-specific setups. */ - mach_setup (cmdline); - -#ifdef CONFIG_MTD - if (!ROOT_DEV && &_root_fs_image_end > &_root_fs_image_start) - set_mem_root (&_root_fs_image_start, - &_root_fs_image_end - &_root_fs_image_start, - *cmdline); -#endif -} - -void __init trap_init (void) -{ -} - -#ifdef CONFIG_MTD - -/* From drivers/mtd/devices/slram.c */ -#define SLRAM_BLK_SZ 0x4000 - -/* Set the root filesystem to be the given memory region. - Some parameter may be appended to CMD_LINE. */ -void set_mem_root (void *addr, size_t len, char *cmd_line) -{ - /* Some sort of idiocy in MTD means we must supply a length that's - a multiple of SLRAM_BLK_SZ. We just round up the real length, - as the file system shouldn't attempt to access anything beyond - the end of the image anyway. */ - len = (((len - 1) + SLRAM_BLK_SZ) / SLRAM_BLK_SZ) * SLRAM_BLK_SZ; - - /* The only way to pass info to the MTD slram driver is via - the command line. */ - if (*cmd_line) { - cmd_line += strlen (cmd_line); - *cmd_line++ = ' '; - } - sprintf (cmd_line, "slram=root,0x%x,+0x%x", (u32)addr, (u32)len); - - ROOT_DEV = MKDEV (MTD_BLOCK_MAJOR, 0); -} -#endif - - -static void irq_nop (unsigned irq) { } -static unsigned irq_zero (unsigned irq) { return 0; } - -static void nmi_end (unsigned irq) -{ - if (irq != IRQ_NMI (0)) { - printk (KERN_CRIT "NMI %d is unrecoverable; restarting...", - irq - IRQ_NMI (0)); - machine_restart (0); - } -} - -static struct hw_interrupt_type nmi_irq_type = { - .typename = "NMI", - .startup = irq_zero, /* startup */ - .shutdown = irq_nop, /* shutdown */ - .enable = irq_nop, /* enable */ - .disable = irq_nop, /* disable */ - .ack = irq_nop, /* ack */ - .end = nmi_end, /* end */ -}; - -void __init init_IRQ (void) -{ - init_irq_handlers (0, NUM_MACH_IRQS, 1, 0); - init_irq_handlers (IRQ_NMI (0), NUM_NMIS, 1, &nmi_irq_type); - mach_init_irqs (); -} - - -void __init mem_init (void) -{ - max_mapnr = MAP_NR (ram_start + ram_len); - - num_physpages = ADDR_TO_PAGE (ram_len); - - total_ram_pages = free_all_bootmem (); - - printk (KERN_INFO - "Memory: %luK/%luK available" - " (%luK kernel code, %luK data)\n", - PAGE_TO_ADDR (nr_free_pages()) / 1024, - ram_len / 1024, - ((unsigned long)&_etext - (unsigned long)&_stext) / 1024, - ((unsigned long)&_ebss - (unsigned long)&_sdata) / 1024); -} - -void free_initmem (void) -{ - unsigned long ram_end = ram_start + ram_len; - unsigned long start = PAGE_ALIGN ((unsigned long)(&_init_start)); - - if (start >= ram_start && start < ram_end) { - unsigned long addr; - unsigned long end = PAGE_ALIGN ((unsigned long)(&_init_end)); - - if (end > ram_end) - end = ram_end; - - printk("Freeing unused kernel memory: %ldK freed\n", - (end - start) / 1024); - - for (addr = start; addr < end; addr += PAGE_SIZE) { - struct page *page = virt_to_page (addr); - ClearPageReserved (page); - init_page_count (page); - __free_page (page); - total_ram_pages++; - } - } -} - - -/* Initialize the `bootmem allocator'. RAM_START and RAM_LEN identify - what RAM may be used. */ -static void __init -init_bootmem_alloc (unsigned long ram_start, unsigned long ram_len) -{ - /* The part of the kernel that's in the same managed RAM space - used for general allocation. */ - unsigned long kram_start = (unsigned long)&_kram_start; - unsigned long kram_end = (unsigned long)&_kram_end; - /* End of the managed RAM space. */ - unsigned long ram_end = ram_start + ram_len; - /* Address range of the interrupt vector table. */ - unsigned long intv_start = (unsigned long)&_intv_start; - unsigned long intv_end = (unsigned long)&_intv_end; - /* True if the interrupt vectors are in the managed RAM area. */ - int intv_in_ram = (intv_end > ram_start && intv_start < ram_end); - /* True if the interrupt vectors are inside the kernel's RAM. */ - int intv_in_kram = (intv_end > kram_start && intv_start < kram_end); - /* A pointer to an optional function that reserves platform-specific - memory regions. We declare the pointer `volatile' to avoid gcc - turning the call into a static call (the problem is that since - it's a weak symbol, a static call may end up trying to reference - the location 0x0, which is not always reachable). */ - void (*volatile mrb) (void) = mach_reserve_bootmem; - /* The bootmem allocator's allocation bitmap. */ - unsigned long bootmap = (unsigned long)&_bootmap; - unsigned long bootmap_len; - - /* Round bootmap location up to next page. */ - bootmap = PAGE_TO_ADDR (ADDR_TO_PAGE_UP (bootmap)); - - /* Initialize bootmem allocator. */ - bootmap_len = init_bootmem_node (NODE_DATA (0), - ADDR_TO_PAGE (bootmap), - ADDR_TO_PAGE (PAGE_OFFSET), - ADDR_TO_PAGE (ram_end)); - - /* Now make the RAM actually allocatable (it starts out `reserved'). */ - free_bootmem (ram_start, ram_len); - - if (kram_end > kram_start) - /* Reserve the RAM part of the kernel's address space, so it - doesn't get allocated. */ - reserve_bootmem(kram_start, kram_end - kram_start, - BOOTMEM_DEFAULT); - - if (intv_in_ram && !intv_in_kram) - /* Reserve the interrupt vector space. */ - reserve_bootmem(intv_start, intv_end - intv_start, - BOOTMEM_DEFAULT); - - if (bootmap >= ram_start && bootmap < ram_end) - /* Reserve the bootmap space. */ - reserve_bootmem(bootmap, bootmap_len, - BOOTMEM_DEFAULT); - - /* Reserve the memory used by the root filesystem image if it's - in RAM. */ - if (&_root_fs_image_end > &_root_fs_image_start - && (unsigned long)&_root_fs_image_start >= ram_start - && (unsigned long)&_root_fs_image_start < ram_end) - reserve_bootmem ((unsigned long)&_root_fs_image_start, - &_root_fs_image_end - &_root_fs_image_start, - BOOTMEM_DEFAULT); - - /* Let the platform-dependent code reserve some too. */ - if (mrb) - (*mrb) (); -} - -/* Tell the kernel about what RAM it may use for memory allocation. */ -static void __init -init_mem_alloc (unsigned long ram_start, unsigned long ram_len) -{ - unsigned i; - unsigned long zones_size[MAX_NR_ZONES]; - - init_bootmem_alloc (ram_start, ram_len); - - for (i = 0; i < MAX_NR_ZONES; i++) - zones_size[i] = 0; - - /* We stuff all the memory into one area, which includes the - initial gap from PAGE_OFFSET to ram_start. */ - zones_size[ZONE_DMA] - = ADDR_TO_PAGE (ram_len + (ram_start - PAGE_OFFSET)); - - /* The allocator is very picky about the address of the first - allocatable page -- it must be at least as aligned as the - maximum allocation -- so try to detect cases where it will get - confused and signal them at compile time (this is a common - problem when porting to a new platform with ). There is a - similar runtime check in free_area_init_core. */ -#if ((PAGE_OFFSET >> PAGE_SHIFT) & ((1UL << (MAX_ORDER - 1)) - 1)) -#error MAX_ORDER is too large for given PAGE_OFFSET (use CONFIG_FORCE_MAX_ZONEORDER to change it) -#endif - NODE_DATA(0)->node_mem_map = NULL; - free_area_init_node (0, NODE_DATA(0), zones_size, - ADDR_TO_PAGE (PAGE_OFFSET), 0); -} - - - -/* Taken from m68knommu */ -void show_mem(void) -{ - unsigned long i; - int free = 0, total = 0, reserved = 0, shared = 0; - int cached = 0; - - printk(KERN_INFO "\nMem-info:\n"); - show_free_areas(); - i = max_mapnr; - while (i-- > 0) { - total++; - if (PageReserved(mem_map+i)) - reserved++; - else if (PageSwapCache(mem_map+i)) - cached++; - else if (!page_count(mem_map+i)) - free++; - else - shared += page_count(mem_map+i) - 1; - } - printk(KERN_INFO "%d pages of RAM\n",total); - printk(KERN_INFO "%d free pages\n",free); - printk(KERN_INFO "%d reserved pages\n",reserved); - printk(KERN_INFO "%d pages shared\n",shared); - printk(KERN_INFO "%d pages swap cached\n",cached); -} |