146 lines
6.0 KiB
C
146 lines
6.0 KiB
C
/*******************************************************************************/
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/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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/* */
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#include "multiboot2.h"
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static u32 infobloc;
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/*******************************************************************************/
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/* Initialise avec l'adresse du bloc multiboot2 */
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void initmultiboot(const u32 addr)
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{
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infobloc=addr;
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}
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/*******************************************************************************/
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/* Renvoie les informations souhaitées multiboot2 */
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u32 getgrubinfo(u8 type)
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{
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struct multiboot_tag *tag;
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unsigned size = *(unsigned *) infobloc;
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for (tag = (struct multiboot_tag *) (infobloc + 8);
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tag->type != MULTIBOOT_TAG_TYPE_END;
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tag = (struct multiboot_tag *) ((u8 *) tag + ((tag->size + 7) & ~7)))
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if (tag->type==type) return tag;
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}
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/*******************************************************************************/
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/* Renvoie la ligne de commande */
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u8 *getgrubinfo_cmdline(void)
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{
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struct multiboot_tag_string *tag=getgrubinfo(MULTIBOOT_TAG_TYPE_CMDLINE);
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return tag->string;
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}
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/*******************************************************************************/
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/* Renvoie la quantité de mémoire */
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u32 getgrubinfo_ram(void)
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{
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struct multiboot_tag_basic_meminfo *tag=getgrubinfo(MULTIBOOT_TAG_TYPE_BASIC_MEMINFO);
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return tag->mem_upper;
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}
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/*******************************************************************************/
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/* Renvoie le plan de la mémoire */
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struct multiboot_memory_map_t *getgrubinfo_mem(void)
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{
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struct multiboot_memory_map_t *tag=getgrubinfo(MULTIBOOT_TAG_TYPE_MMAP);
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return tag;
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}
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/*******************************************************************************/
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/* Renvoie les information sur le framebuffer */
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struct multiboot_tag_framebuffer *getgrubinfo_fb(void)
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{
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struct multiboot_tag_framebuffer *tag=getgrubinfo(MULTIBOOT_TAG_TYPE_FRAMEBUFFER);
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return tag;
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}
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/*******************************************************************************/
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/* Affiche les informations multiboot2 ;*/
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void getgrubinfo_all(void)
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{
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struct multiboot_tag *tag;
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u32 size = *(unsigned *) infobloc;
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if (infobloc & 7) print("Attention : Bloc non aligne...");
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printf(" Taille :% 4u\r\n", (u32)size);
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for (tag = (struct multiboot_tag *) (infobloc + 8);
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tag->type != MULTIBOOT_TAG_TYPE_END;
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tag = (struct multiboot_tag *) ((u8 *) tag + ((tag->size + 7) & ~7)))
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{
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printf ("--- Tag % hu, Taille % hu\r\n", tag->type, tag->size);
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switch (tag->type)
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{
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case MULTIBOOT_TAG_TYPE_CMDLINE:
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printf (" Ligne de lancement : %s\r\n",
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((struct multiboot_tag_string *) tag)->string);
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break;
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case MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME:
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printf (" Chargeur de boot : %s\r\n",
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((struct multiboot_tag_string *) tag)->string);
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break;
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case MULTIBOOT_TAG_TYPE_MODULE:
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printf (" Module %X-%X. Command line %s\r\n",
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((struct multiboot_tag_module *) tag)->mod_start,
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((struct multiboot_tag_module *) tag)->mod_end,
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((struct multiboot_tag_module *) tag)->cmdline);
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break;
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case MULTIBOOT_TAG_TYPE_BASIC_MEMINFO:
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printf (" Memoire basse : %H, memoire haute = %lH\r\n",
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((struct multiboot_tag_basic_meminfo *) tag)->mem_lower<<10,
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((u64)((struct multiboot_tag_basic_meminfo *) tag)->mem_upper)<<10);
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break;
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case MULTIBOOT_TAG_TYPE_BOOTDEV:
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printf (" Peripherique de demarrage : %Y,%u,%u\r\n\r\n",
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((struct multiboot_tag_bootdev *) tag)->biosdev,
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((struct multiboot_tag_bootdev *) tag)->slice,
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((struct multiboot_tag_bootdev *) tag)->part);
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break;
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case MULTIBOOT_TAG_TYPE_MMAP:
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{
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multiboot_memory_map_t *mmap;
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printf ("*** Plan de memoire ***\r\n");
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for (mmap = ((struct multiboot_tag_mmap *) tag)->entries;(u8 *) mmap < (u8 *) tag + tag->size; mmap = (multiboot_memory_map_t *)
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((unsigned long) mmap + ((struct multiboot_tag_mmap *) tag)->entry_size))
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printf (" adresse: %lY, taille:%lY, type:%Y\r\n",
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(u64) (mmap->addr),
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(u64) (mmap->len),
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(u32) (mmap->type));
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break;
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}
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case MULTIBOOT_TAG_TYPE_FRAMEBUFFER:
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{
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struct multiboot_tag_framebuffer *tagfb = (struct multiboot_tag_framebuffer *) tag;
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printf (" Framebuffer, resolution %d*%d*%d adresse: %X, ",tagfb->common.framebuffer_width,tagfb->common.framebuffer_height,tagfb->common.framebuffer_bpp,tagfb->common.framebuffer_addr);
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switch (tagfb->common.framebuffer_type)
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{
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case MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED:
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printf ("mode graphique indexé\r\n");
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break;
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case MULTIBOOT_FRAMEBUFFER_TYPE_RGB:
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printf ("mode graphique RGB\r\n");
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break;
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case MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT:
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printf ("mode texte EGA\r\n");
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break;
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}
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break;
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}
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case MULTIBOOT_TAG_TYPE_VBE:
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{
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struct multiboot_tag_vbe *tagvbe = (struct multiboot_tag_framebuffer *) tag;
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printf (" VBE 2.0, mode %Y, adresse %hY:%hY-%hY\r\n", tagvbe->vbe_mode,tagvbe->vbe_interface_seg,tagvbe->vbe_interface_off,tagvbe->vbe_interface_len);
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}
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}
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}
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}
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/*******************************************************************************/
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