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boot/kernloader/drivers/AHCI.c
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boot/kernloader/drivers/AHCI.c
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boot/kernloader/drivers/AHCI.h
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boot/kernloader/drivers/AHCI.h
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150
boot/kernloader/drivers/ATA.c
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boot/kernloader/drivers/ATA.c
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/* ATA.c - This file is a part of NutsOS
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*
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* NutsOS
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* Copyright (C) 2013 Free Software Foundation, Inc.
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*
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* NutsOS is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* NutsOS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with NutsOS; If not, see <http://www.gnu.org/licenses/>.
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*
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* Valentin Verdier <valentin.verdier03@gmail.com>
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*/
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#include "../types.h"
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#include "../kernLdr.h"
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#include "ATA.h"
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int ATA_getDevice(unsigned int ataNumber, unsigned int drive, T_ATA_device* dev) {
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ataNumber &= 0x3;
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drive &= 0x1;
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print("-> Device : ATA %d ", DEFAULT_COLOR, ataNumber);
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switch(ataNumber) {
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case 0:
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dev->ata_port = ATA_0_PORT;
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dev->ata_ctrl_port = ATA_0_CTRL_PORT;
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break;
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case 1:
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dev->ata_port = ATA_1_PORT;
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dev->ata_ctrl_port = ATA_1_CTRL_PORT;
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break;
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case 2:
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dev->ata_port = ATA_2_PORT;
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dev->ata_ctrl_port = ATA_2_CTRL_PORT;
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break;
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case 3:
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dev->ata_port = ATA_3_PORT;
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dev->ata_ctrl_port = ATA_3_CTRL_PORT;
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break;
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}
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if(drive) {
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print("Slave drive\n", DEFAULT_COLOR);
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dev->drive = ATA_SLAVE;
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} else {
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print("Master drive\n", DEFAULT_COLOR);
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dev->drive = ATA_MASTER;
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}
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/* On vérifie si les ports I/O sont reliés à un contrôleur */
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T_byte testByte;
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_out(dev->ata_port + 2, 0x45);
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_in(dev->ata_port + 2, &testByte);
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if(testByte == 0x45) { /* Le contrôleur éxiste */
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T_byte a, b, status;
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/* On se prépare à utiliser la commande IDENTIFY pour connaitre le type de disque ATA */
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_out(dev->ata_port + 6, ATA_CHS_MODE | dev->drive); /* On selectionne le disque */
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delay(1000);
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_out(dev->ata_port + 2, 0);
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_out(dev->ata_port + 3, 0);
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_out(dev->ata_port + 4, 0);
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_out(dev->ata_port + 5, 0);
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_out(dev->ata_port + 7, ATA_CMD_IDENTIFY); /* envoie de la commande */
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_in(dev->ata_port + 7, &status);
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if(status == 0) { /* Si le status est à 0, il n'y à pas de disque */
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print("-> ERROR : Drive doesn't exist !\n", DEFAULT_COLOR);
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return 0;
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} else { /* Sinon on attend que le disque soit prêt */
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while(status & 0x80) {
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_in(dev->ata_port + 7, &status);
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}
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}
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/* On récupère les octets de signature */
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_in(dev->ata_port + 4, &a);
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_in(dev->ata_port + 5, &b);
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if((a == 0) && (b == 0)) { /* Disque dur ATA */
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while(!(status & 0x08)) { /* On attend que le disque soit prêt pour la lecture des données d'identification */
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_in(dev->ata_port + 7, &status);
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}
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unsigned int i;
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T_word trash;
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for(i = 0; i < 256; i++) { /* Pas besoin des info d'identification, mais on les transfert pour que le contrôleur termine la commande normalement */
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_inw(dev->ata_port, &trash);
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}
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return 1;
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} else {
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print("-> ERROR : Drive is not ATA !\n", DEFAULT_COLOR);
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}
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} else {
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print("-> ERROR : Controller doesn't exist !\n", DEFAULT_COLOR);
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}
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return 0;
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}
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void ATA_read(T_ATA_device dev, T_dword baseLBA, T_byte sectorCount, void* baddr) {
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T_byte* buffer = baddr;
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T_byte status = 0;
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unsigned int i, j;
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T_word word;
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_out(dev.ata_port + 1, 0); /* Octet nul */
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_out(dev.ata_port + 2, sectorCount);
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_out(dev.ata_port + 3, (T_byte) (baseLBA & 0xFF)); /* 8 bits de poids faible de l'adresse LBA */
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_out(dev.ata_port + 4, (T_byte) ((baseLBA >> 8) & 0xFF));
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_out(dev.ata_port + 5, (T_byte) ((baseLBA >> 16) & 0xFF));
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_out(dev.ata_port + 6, ATA_LBA_MODE | dev.drive | ((baseLBA >> 24) & 0x0F));
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for(i = 0; i < 4; i++) {
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_in(dev.ata_port + 7, &status);
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}
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_out(dev.ata_port + 7, ATA_CMD_READ);
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/* On attend que le contrôleur soit prêt */
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for(i = 0; i < sectorCount; i++) {
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do {
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_in(dev.ata_port + 7, &status);
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}while((status & 0x80) || !(status & 0x08));
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for(j = 0; j < 256; j++) {
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_inw(dev.ata_port, &word);
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buffer[(i * 512) + (j * 2)] = (T_byte) (word & 0xFF);
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buffer[(i * 512) + (j * 2) + 1] = (T_byte) ((word >> 8) & 0xFF);
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}
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}
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}
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57
boot/kernloader/drivers/ATA.h
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57
boot/kernloader/drivers/ATA.h
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/* ATA.h - This file is a part of NutsOS
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*
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* NutsOS
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* Copyright (C) 2013 Free Software Foundation, Inc.
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*
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* NutsOS is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* NutsOS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with NutsOS; If not, see <http://www.gnu.org/licenses/>.
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*
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* Valentin Verdier <valentin.verdier03@gmail.com>
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*/
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#pragma once
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#ifndef NOS_ATA_H
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#define NOS_ATA_H
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#include "../types.h"
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#define ATA_LBA_MODE 0xE0
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#define ATA_CHS_MODE 0xA0
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#define ATA_MASTER 0x00
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#define ATA_SLAVE 0x10
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#define ATA_0_PORT 0x1F0
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#define ATA_1_PORT 0x170
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#define ATA_2_PORT 0x1E8
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#define ATA_3_PORT 0x168
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#define ATA_0_CTRL_PORT 0x3F6
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#define ATA_1_CTRL_PORT 0x376
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#define ATA_2_CTRL_PORT 0x3E6
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#define ATA_3_CTRL_PORT 0x366
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#define ATA_CMD_READ 0x20
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#define ATA_CMD_IDENTIFY 0xEC
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typedef struct {
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T_word ata_port;
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T_word ata_ctrl_port;
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T_byte drive;
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} T_ATA_device;
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int ata_select_drive(unsigned int, unsigned int, T_ATA_device*);
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void ata_read(T_ATA_device, T_dword, T_byte, void*);
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#endif
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1
boot/kernloader/drivers/ATAPI.c
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1
boot/kernloader/drivers/ATAPI.c
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@ -0,0 +1 @@
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1
boot/kernloader/drivers/ATAPI.h
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1
boot/kernloader/drivers/ATAPI.h
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@ -0,0 +1 @@
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