1 files changed, 225 insertions, 0 deletions

diff --git a/arch/cris/mm/init.c b/arch/cris/mm/init.c
new file mode 100644
index 000000000000..31a0018b525a
--- /dev/null
+++ b/arch/cris/mm/init.c
@@ -0,0 +1,225 @@
+/*
+ *  linux/arch/cris/mm/init.c
+ *
+ *  Copyright (C) 1995  Linus Torvalds
+ *  Copyright (C) 2000,2001  Axis Communications AB
+ *
+ *  Authors:  Bjorn Wesen (bjornw@axis.com)
+ *
+ *  $Log: init.c,v $
+ *  Revision 1.11  2004/05/28 09:28:56  starvik
+ *  Calculation of loops_per_usec moved because initalization order has changed
+ *  in Linux 2.6.
+ *
+ *  Revision 1.10  2004/05/14 07:58:05  starvik
+ *  Merge of changes from 2.4
+ *
+ *  Revision 1.9  2003/07/04 08:27:54  starvik
+ *  Merge of Linux 2.5.74
+ *
+ *  Revision 1.8  2003/04/09 05:20:48  starvik
+ *  Merge of Linux 2.5.67
+ *
+ *  Revision 1.7  2003/01/22 06:48:38  starvik
+ *  Fixed warnings issued by GCC 3.2.1
+ *
+ *  Revision 1.6  2002/12/11 14:44:48  starvik
+ *  Extracted v10 (ETRAX 100LX) specific stuff to arch/cris/arch-v10/mm
+ *
+ *  Revision 1.5  2002/11/18 07:37:37  starvik
+ *  Added cache bug workaround (from Linux 2.4)
+ *
+ *  Revision 1.4  2002/11/13 15:40:24  starvik
+ *  Removed the page table cache stuff (as done in other archs)
+ *
+ *  Revision 1.3  2002/11/05 06:45:13  starvik
+ *  Merge of Linux 2.5.45
+ *
+ *  Revision 1.2  2001/12/18 13:35:22  bjornw
+ *  Applied the 2.4.13->2.4.16 CRIS patch to 2.5.1 (is a copy of 2.4.15).
+ *
+ *  Revision 1.31  2001/11/13 16:22:00  bjornw
+ *  Skip calculating totalram and sharedram in si_meminfo
+ *
+ *  Revision 1.30  2001/11/12 19:02:10  pkj
+ *  Fixed compiler warnings.
+ *
+ *  Revision 1.29  2001/07/25 16:09:50  bjornw
+ *  val->sharedram will stay 0
+ *
+ *  Revision 1.28  2001/06/28 16:30:17  bjornw
+ *  Oops. This needs to wait until 2.4.6 is merged
+ *
+ *  Revision 1.27  2001/06/28 14:04:07  bjornw
+ *  Fill in sharedram
+ *
+ *  Revision 1.26  2001/06/18 06:36:02  hp
+ *  Enable free_initmem of __init-type pages
+ *
+ *  Revision 1.25  2001/06/13 00:02:23  bjornw
+ *  Use a separate variable to store the current pgd to avoid races in schedule
+ *
+ *  Revision 1.24  2001/05/15 00:52:20  hp
+ *  Only map segment 0xa as seg if CONFIG_JULIETTE
+ *
+ *  Revision 1.23  2001/04/04 14:35:40  bjornw
+ *  * Removed get_pte_slow and friends (2.4.3 change)
+ *  * Removed bad_pmd handling (2.4.3 change)
+ *
+ *  Revision 1.22  2001/04/04 13:38:04  matsfg
+ *  Moved ioremap to a separate function instead
+ *
+ *  Revision 1.21  2001/03/27 09:28:33  bjornw
+ *  ioremap used too early - lets try it in mem_init instead
+ *
+ *  Revision 1.20  2001/03/23 07:39:21  starvik
+ *  Corrected according to review remarks
+ *
+ *  Revision 1.19  2001/03/15 14:25:17  bjornw
+ *  More general shadow registers and ioremaped addresses for external I/O
+ *
+ *  Revision 1.18  2001/02/23 12:46:44  bjornw
+ *  * 0xc was not CSE1; 0x8 is, same as uncached flash, so we move the uncached
+ *    flash during CRIS_LOW_MAP from 0xe to 0x8 so both the flash and the I/O
+ *    is mapped straight over (for !CRIS_LOW_MAP the uncached flash is still 0xe)
+ *
+ *  Revision 1.17  2001/02/22 15:05:21  bjornw
+ *  Map 0x9 straight over during LOW_MAP to allow for memory mapped LEDs
+ *
+ *  Revision 1.16  2001/02/22 15:02:35  bjornw
+ *  Map 0xc straight over during LOW_MAP to allow for memory mapped I/O
+ *
+ *  Revision 1.15  2001/01/10 21:12:10  bjornw
+ *  loops_per_sec -> loops_per_jiffy
+ *
+ *  Revision 1.14  2000/11/22 16:23:20  bjornw
+ *  Initialize totalhigh counters to 0 to make /proc/meminfo look nice.
+ *
+ *  Revision 1.13  2000/11/21 16:37:51  bjornw
+ *  Temporarily disable initmem freeing
+ *
+ *  Revision 1.12  2000/11/21 13:55:07  bjornw
+ *  Use CONFIG_CRIS_LOW_MAP for the low VM map instead of explicit CPU type
+ *
+ *  Revision 1.11  2000/10/06 12:38:22  bjornw
+ *  Cast empty_bad_page correctly (should really be of * type from the start..
+ *
+ *  Revision 1.10  2000/10/04 16:53:57  bjornw
+ *  Fix memory-map due to LX features
+ *
+ *  Revision 1.9  2000/09/13 15:47:49  bjornw
+ *  Wrong count in reserved-pages loop
+ *
+ *  Revision 1.8  2000/09/13 14:35:10  bjornw
+ *  2.4.0-test8 added a new arg to free_area_init_node
+ *
+ *  Revision 1.7  2000/08/17 15:35:55  bjornw
+ *  2.4.0-test6 removed MAP_NR and inserted virt_to_page
+ *
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/bootmem.h>
+#include <asm/tlb.h>
+
+DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
+
+unsigned long empty_zero_page;
+
+extern char _stext, _edata, _etext; /* From linkerscript */
+extern char __init_begin, __init_end;
+
+void 
+show_mem(void)
+{
+        int i,free = 0,total = 0,cached = 0, reserved = 0, nonshared = 0;
+        int shared = 0;
+
+        printk("\nMem-info:\n");
+        show_free_areas();
+        printk("Free swap:       %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
+        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 if (page_count(mem_map+i) == 1)
+                        nonshared++;
+                else
+                        shared += page_count(mem_map+i) - 1;
+        }
+        printk("%d pages of RAM\n",total);
+        printk("%d free pages\n",free);
+        printk("%d reserved pages\n",reserved);
+        printk("%d pages nonshared\n",nonshared);
+        printk("%d pages shared\n",shared);
+        printk("%d pages swap cached\n",cached);
+}
+
+void __init
+mem_init(void)
+{
+        int codesize, reservedpages, datasize, initsize;
+        unsigned long tmp;
+
+        if(!mem_map)
+                BUG();
+
+        /* max/min_low_pfn was set by setup.c
+         * now we just copy it to some other necessary places...
+         *
+         * high_memory was also set in setup.c
+         */
+
+        max_mapnr = num_physpages = max_low_pfn - min_low_pfn;
+ 
+        /* this will put all memory onto the freelists */
+        totalram_pages = free_all_bootmem();
+
+        reservedpages = 0;
+        for (tmp = 0; tmp < max_mapnr; tmp++) {
+                /*
+                 * Only count reserved RAM pages
+                 */
+                if (PageReserved(mem_map + tmp))
+                        reservedpages++;
+        }
+
+        codesize =  (unsigned long) &_etext - (unsigned long) &_stext;
+        datasize =  (unsigned long) &_edata - (unsigned long) &_etext;
+        initsize =  (unsigned long) &__init_end - (unsigned long) &__init_begin;
+        
+        printk(KERN_INFO
+               "Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, "
+               "%dk init)\n" ,
+               (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
+               max_mapnr << (PAGE_SHIFT-10),
+               codesize >> 10,
+               reservedpages << (PAGE_SHIFT-10),
+               datasize >> 10,
+               initsize >> 10
+               );
+}
+
+/* free the pages occupied by initialization code */
+
+void 
+free_initmem(void)
+{
+        unsigned long addr;
+
+        addr = (unsigned long)(&__init_begin);
+        for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
+                ClearPageReserved(virt_to_page(addr));
+                set_page_count(virt_to_page(addr), 1);
+                free_page(addr);
+                totalram_pages++;
+        }
+        printk (KERN_INFO "Freeing unused kernel memory: %luk freed\n",
+                (unsigned long)((&__init_end - &__init_begin) >> 10));
+}