tests/multiboot/mmap.c

   1 /*
   2  * Copyright (c) 2013 Kevin Wolf <kwolf@redhat.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  20  * THE SOFTWARE.
  21  */
  22
  23 #include "libc.h"
  24 #include "multiboot.h"
  25
  26 int test_main(uint32_t magic, struct mb_info *mbi)
  27 {
  28     uintptr_t entry_addr;
  29     struct mb_mmap_entry *entry;
  30
  31     (void) magic;
  32
  33     printf("Lower memory: %dk\n", mbi->mem_lower);
  34     printf("Upper memory: %dk\n", mbi->mem_upper);
  35
  36     printf("\ne820 memory map:\n");
  37
  38     for (entry_addr = mbi->mmap_addr;
  39          entry_addr < mbi->mmap_addr + mbi->mmap_length;
  40          entry_addr += entry->size + 4)
  41     {
  42         entry = (struct mb_mmap_entry*) entry_addr;
  43
  44         printf("%#llx - %#llx: type %d [entry size: %d]\n",
  45                entry->base_addr,
  46                entry->base_addr + entry->length,
  47                entry->type,
  48                entry->size);
  49     }
  50
  51     printf("\nmmap start:       %#x\n", mbi->mmap_addr);
  52     printf("mmap end:         %#x\n", mbi->mmap_addr + mbi->mmap_length);
  53     printf("real mmap end:    %#x\n", entry_addr);
  54
  55     return 0;
  56 }