Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <linux/memblock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/pfn.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <asm/page.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <asm/sections.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <as-layout.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <kern.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <mem_user.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <os.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) static int physmem_fd = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) /* Changed during early boot */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) unsigned long high_physmem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) EXPORT_SYMBOL(high_physmem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) extern unsigned long long physmem_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) void __init mem_total_pages(unsigned long physmem, unsigned long iomem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 		     unsigned long highmem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	unsigned long phys_pages, highmem_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	unsigned long iomem_pages, total_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	phys_pages    = physmem >> PAGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	iomem_pages   = iomem   >> PAGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	highmem_pages = highmem >> PAGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	total_pages   = phys_pages + iomem_pages + highmem_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	max_mapnr = total_pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) void map_memory(unsigned long virt, unsigned long phys, unsigned long len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 		int r, int w, int x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	__u64 offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	int fd, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	fd = phys_mapping(phys, &offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	err = os_map_memory((void *) virt, fd, offset, len, r, w, x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 		if (err == -ENOMEM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 			printk(KERN_ERR "try increasing the host's "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 			       "/proc/sys/vm/max_map_count to <physical "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 			       "memory size>/4096\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 		panic("map_memory(0x%lx, %d, 0x%llx, %ld, %d, %d, %d) failed, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 		      "err = %d\n", virt, fd, offset, len, r, w, x, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60)  * setup_physmem() - Setup physical memory for UML
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61)  * @start:	Start address of the physical kernel memory,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62)  *		i.e start address of the executable image.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63)  * @reserve_end:	end address of the physical kernel memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64)  * @len:	Length of total physical memory that should be mapped/made
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65)  *		available, in bytes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66)  * @highmem:	Number of highmem bytes that should be mapped/made available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68)  * Creates an unlinked temporary file of size (len + highmem) and memory maps
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69)  * it on the last executable image address (uml_reserved).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71)  * The offset is needed as the length of the total physical memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72)  * (len + highmem) includes the size of the memory used be the executable image,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73)  * but the mapped-to address is the last address of the executable image
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74)  * (uml_reserved == end address of executable image).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76)  * The memory mapped memory of the temporary file is used as backing memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77)  * of all user space processes/kernel tasks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) void __init setup_physmem(unsigned long start, unsigned long reserve_end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 			  unsigned long len, unsigned long long highmem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	unsigned long reserve = reserve_end - start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	long map_size = len - reserve;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	if(map_size <= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		os_warn("Too few physical memory! Needed=%lu, given=%lu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 			reserve, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		exit(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	physmem_fd = create_mem_file(len + highmem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	err = os_map_memory((void *) reserve_end, physmem_fd, reserve,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 			    map_size, 1, 1, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		os_warn("setup_physmem - mapping %ld bytes of memory at 0x%p "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 			"failed - errno = %d\n", map_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 			(void *) reserve_end, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		exit(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	 * Special kludge - This page will be mapped in to userspace processes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	 * from physmem_fd, so it needs to be written out there.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	os_seek_file(physmem_fd, __pa(__syscall_stub_start));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	os_write_file(physmem_fd, __syscall_stub_start, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	os_fsync_file(physmem_fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	memblock_add(__pa(start), len + highmem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	memblock_reserve(__pa(start), reserve);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	min_low_pfn = PFN_UP(__pa(reserve_end));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	max_low_pfn = min_low_pfn + (map_size >> PAGE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) int phys_mapping(unsigned long phys, unsigned long long *offset_out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	int fd = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	if (phys < physmem_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		fd = physmem_fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 		*offset_out = phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	else if (phys < __pa(end_iomem)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		struct iomem_region *region = iomem_regions;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		while (region != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 			if ((phys >= region->phys) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 			    (phys < region->phys + region->size)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 				fd = region->fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 				*offset_out = phys - region->phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 			region = region->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	else if (phys < __pa(end_iomem) + highmem) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 		fd = physmem_fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		*offset_out = phys - iomem_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	return fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) EXPORT_SYMBOL(phys_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) static int __init uml_mem_setup(char *line, int *add)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	char *retptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	physmem_size = memparse(line,&retptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) __uml_setup("mem=", uml_mem_setup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) "mem=<Amount of desired ram>\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) "    This controls how much \"physical\" memory the kernel allocates\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) "    for the system. The size is specified as a number followed by\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) "    one of 'k', 'K', 'm', 'M', which have the obvious meanings.\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) "    This is not related to the amount of memory in the host.  It can\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) "    be more, and the excess, if it's ever used, will just be swapped out.\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) "	Example: mem=64M\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) extern int __init parse_iomem(char *str, int *add);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) __uml_setup("iomem=", parse_iomem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) "iomem=<name>,<file>\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) "    Configure <file> as an IO memory region named <name>.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)  * This list is constructed in parse_iomem and addresses filled in in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)  * setup_iomem, both of which run during early boot.  Afterwards, it's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)  * unchanged.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) struct iomem_region *iomem_regions;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) /* Initialized in parse_iomem and unchanged thereafter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) int iomem_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) unsigned long find_iomem(char *driver, unsigned long *len_out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	struct iomem_region *region = iomem_regions;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	while (region != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		if (!strcmp(region->driver, driver)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 			*len_out = region->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 			return region->virt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		region = region->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) EXPORT_SYMBOL(find_iomem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static int setup_iomem(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	struct iomem_region *region = iomem_regions;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	unsigned long iomem_start = high_physmem + PAGE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	while (region != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		err = os_map_memory((void *) iomem_start, region->fd, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 				    region->size, 1, 1, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 			printk(KERN_ERR "Mapping iomem region for driver '%s' "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 			       "failed, errno = %d\n", region->driver, -err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 			region->virt = iomem_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 			region->phys = __pa(region->virt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		iomem_start += region->size + PAGE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		region = region->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) __initcall(setup_iomem);