Rev 854 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 854 | serge | 1 | |
| 2 | |||
| 3 | |||
| 4 | #include "multiboot.h" |
||
| 5 | |||
| 6 | extern u32_t pg_balloc; |
||
| 7 | |||
| 8 | extern u32_t mem_amount; |
||
| 9 | |||
| 10 | extern u32_t rd_fat ; |
||
| 11 | extern u32_t rd_fat_end ; |
||
| 12 | extern u32_t rd_root ; |
||
| 13 | extern u32_t rd_root_end ; |
||
| 14 | |||
| 15 | extern multiboot_info_t *boot_mbi; |
||
| 16 | |||
| 17 | /* Check if the bit BIT in FLAGS is set. */ |
||
| 18 | |||
| 19 | |||
| 20 | void init() |
||
| 21 | |||
| 22 | u32_t last_page = 0; |
||
| 23 | |||
| 24 | if (CHECK_FLAG (boot_mbi->flags, 1)) |
||
| 25 | |||
| 26 | |||
| 27 | /* Is the command line passed? */ |
||
| 28 | |||
| 29 | printf ("cmdline = %s\n", (char *) boot_mbi->cmdline); |
||
| 30 | |||
| 31 | /* Are mods_* valid? */ |
||
| 32 | |||
| 33 | { |
||
| 34 | module_t *mod; |
||
| 35 | int i; |
||
| 36 | |||
| 37 | // printf ("mods_count = %d, mods_addr = 0x%x\n", |
||
| 38 | |||
| 861 | serge | 39 | for (i = 0, mod = (module_t *) boot_mbi->mods_addr; |
| 40 | i < boot_mbi->mods_count;i++, mod++) |
||
| 854 | serge | 41 | { |
| 42 | pg_balloc = mod->mod_end; |
||
| 43 | // printf (" mod_start = 0x%x, mod_end = 0x%x, string = %s\n", |
||
| 44 | // (u32_t) mod->mod_start,(u32_t) mod->mod_end, (char *) mod->string); |
||
| 861 | serge | 45 | }; |
| 46 | mod--; |
||
| 854 | serge | 47 | rd_base = mod->mod_start+OS_BASE; |
| 48 | rd_fat = rd_base + 512; |
||
| 49 | rd_fat_end = rd_base + 512 + 4278; |
||
| 50 | rd_root = rd_base + 512*19; |
||
| 51 | rd_root_end = rd_base + 512*33; |
||
| 52 | // printf(" rd_base = %x\n", rd_base); |
||
| 53 | } |
||
| 861 | serge | 54 | |
| 854 | serge | 55 | if (CHECK_FLAG (boot_mbi->flags, 6)) |
| 56 | |||
| 57 | memory_map_t *mmap; |
||
| 58 | u32_t page; |
||
| 59 | |||
| 60 | // printf ("mmap_addr = 0x%x, mmap_length = 0x%x\n", |
||
| 61 | |||
| 861 | serge | 62 | |
| 63 | for (mmap = (memory_map_t *) boot_mbi->mmap_addr; |
||
| 854 | serge | 64 | |
| 65 | mmap = (memory_map_t *) ((u32_t) mmap |
||
| 66 | + mmap->size + sizeof (mmap->size))) |
||
| 67 | { |
||
| 68 | u32_t page; |
||
| 69 | /* |
||
| 70 | printf (" size = 0x%x, base_addr = 0x%x%x," |
||
| 861 | serge | 71 | " length = 0x%x%x, type = 0x%x\n", |
| 854 | serge | 72 | (unsigned) mmap->size, |
| 73 | (unsigned) mmap->base_addr_high, |
||
| 74 | (unsigned) mmap->base_addr_low, |
||
| 75 | (unsigned) mmap->length_high, |
||
| 76 | (unsigned) mmap->length_low, |
||
| 77 | (unsigned) mmap->type); |
||
| 78 | */ |
||
| 79 | if( mmap->type != 1) |
||
| 861 | serge | 80 | continue; |
| 854 | serge | 81 | page = (mmap->base_addr_low+mmap->length_low)&(~4095); |
| 82 | if(page > last_page) |
||
| 83 | last_page = page; |
||
| 84 | } |
||
| 85 | } |
||
| 86 | |||
| 87 | if(last_page > 256*1024*1024) |
||
| 88 | |||
| 89 | |||
| 90 | mem_amount = last_page; |
||
| 91 | |||
| 92 | }; |
||
| 93 |