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/*
* UBL, The Universal Talkware Boot Loader
* Copyright (C) 2000 Universal Talkware Inc.
* Copyright (C) 2002 Eric Biederman
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*
*/
typedef uint64_t sector_t;
struct controller {
uint16_t cmd_base;
uint16_t ctrl_base;
};
struct harddisk_info {
struct controller *ctrl;
uint16_t heads;
uint16_t cylinders;
uint16_t sectors_per_track;
uint8_t model_number[41];
uint8_t slave;
sector_t sectors;
int address_mode; /* am i lba (0x40) or chs (0x00) */
#define ADDRESS_MODE_CHS 0
#define ADDRESS_MODE_LBA 1
#define ADDRESS_MODE_LBA48 2
#define ADDRESS_MODE_PACKET 3
uint32_t hw_sector_size;
unsigned drive_exists : 1;
unsigned slave_absent : 1;
unsigned removable : 1;
};
#define IDE_SECTOR_SIZE 0x200
#define CDROM_SECTOR_SIZE 0x800
#define IDE_BASE0 (0x1F0u) /* primary controller */
#define IDE_BASE1 (0x170u) /* secondary */
#define IDE_BASE2 (0x0F0u) /* third */
#define IDE_BASE3 (0x070u) /* fourth */
#define IDE_REG_EXTENDED_OFFSET (0x204u)
#define IDE_REG_DATA(ctrl) ((ctrl)->cmd_base + 0u) /* word register */
#define IDE_REG_ERROR(ctrl) ((ctrl)->cmd_base + 1u)
#define IDE_REG_PRECOMP(ctrl) ((ctrl)->cmd_base + 1u)
#define IDE_REG_FEATURE(ctrl) ((ctrl)->cmd_base + 1u)
#define IDE_REG_SECTOR_COUNT(ctrl) ((ctrl)->cmd_base + 2u)
#define IDE_REG_SECTOR_NUMBER(ctrl) ((ctrl)->cmd_base + 3u)
#define IDE_REG_LBA_LOW(ctrl) ((ctrl)->cmd_base + 3u)
#define IDE_REG_CYLINDER_LSB(ctrl) ((ctrl)->cmd_base + 4u)
#define IDE_REG_LBA_MID(ctrl) ((ctrl)->cmd_base + 4u)
#define IDE_REG_CYLINDER_MSB(ctrl) ((ctrl)->cmd_base + 5u)
#define IDE_REG_LBA_HIGH(ctrl) ((ctrl)->cmd_base + 5u)
#define IDE_REG_DRIVEHEAD(ctrl) ((ctrl)->cmd_base + 6u)
#define IDE_REG_DEVICE(ctrl) ((ctrl)->cmd_base + 6u)
#define IDE_REG_STATUS(ctrl) ((ctrl)->cmd_base + 7u)
#define IDE_REG_COMMAND(ctrl) ((ctrl)->cmd_base + 7u)
#define IDE_REG_ALTSTATUS(ctrl) ((ctrl)->ctrl_base + 2u)
#define IDE_REG_DEVICE_CONTROL(ctrl) ((ctrl)->ctrl_base + 2u)
struct ide_pio_command
{
uint8_t feature;
uint8_t sector_count;
uint8_t lba_low;
uint8_t lba_mid;
uint8_t lba_high;
uint8_t device;
# define IDE_DH_DEFAULT (0xA0)
# define IDE_DH_HEAD(x) ((x) & 0x0F)
# define IDE_DH_MASTER (0x00)
# define IDE_DH_SLAVE (0x10)
# define IDE_DH_LBA (0x40)
# define IDE_DH_CHS (0x00)
uint8_t command;
uint8_t sector_count2;
uint8_t lba_low2;
uint8_t lba_mid2;
uint8_t lba_high2;
};
#define IDE_DEFAULT_COMMAND { 0xFFu, 0x01, 0x00, 0x0000, IDE_DH_DEFAULT }
#define IDE_ERR_ICRC 0x80 /* ATA Ultra DMA bad CRC */
#define IDE_ERR_BBK 0x80 /* ATA bad block */
#define IDE_ERR_UNC 0x40 /* ATA uncorrected error */
#define IDE_ERR_MC 0x20 /* ATA media change */
#define IDE_ERR_IDNF 0x10 /* ATA id not found */
#define IDE_ERR_MCR 0x08 /* ATA media change request */
#define IDE_ERR_ABRT 0x04 /* ATA command aborted */
#define IDE_ERR_NTK0 0x02 /* ATA track 0 not found */
#define IDE_ERR_NDAM 0x01 /* ATA address mark not found */
#define IDE_STATUS_BSY 0x80 /* busy */
#define IDE_STATUS_RDY 0x40 /* ready */
#define IDE_STATUS_DF 0x20 /* device fault */
#define IDE_STATUS_WFT 0x20 /* write fault (old name) */
#define IDE_STATUS_SKC 0x10 /* seek complete */
#define IDE_STATUS_DRQ 0x08 /* data request */
#define IDE_STATUS_CORR 0x04 /* corrected */
#define IDE_STATUS_IDX 0x02 /* index */
#define IDE_STATUS_ERR 0x01 /* error (ATA) */
#define IDE_STATUS_CHK 0x01 /* check (ATAPI) */
#define IDE_CTRL_HD15 0x08 /* bit should always be set to one */
#define IDE_CTRL_SRST 0x04 /* soft reset */
#define IDE_CTRL_NIEN 0x02 /* disable interrupts */
/* Most mandtory and optional ATA commands (from ATA-3), */
#define IDE_CMD_CFA_ERASE_SECTORS 0xC0
#define IDE_CMD_CFA_REQUEST_EXT_ERR_CODE 0x03
#define IDE_CMD_CFA_TRANSLATE_SECTOR 0x87
#define IDE_CMD_CFA_WRITE_MULTIPLE_WO_ERASE 0xCD
#define IDE_CMD_CFA_WRITE_SECTORS_WO_ERASE 0x38
#define IDE_CMD_CHECK_POWER_MODE1 0xE5
#define IDE_CMD_CHECK_POWER_MODE2 0x98
#define IDE_CMD_DEVICE_RESET 0x08
#define IDE_CMD_EXECUTE_DEVICE_DIAGNOSTIC 0x90
#define IDE_CMD_FLUSH_CACHE 0xE7
#define IDE_CMD_FORMAT_TRACK 0x50
#define IDE_CMD_IDENTIFY_DEVICE 0xEC
#define IDE_CMD_IDENTIFY_DEVICE_PACKET 0xA1
#define IDE_CMD_IDENTIFY_PACKET_DEVICE 0xA1
#define IDE_CMD_IDLE1 0xE3
#define IDE_CMD_IDLE2 0x97
#define IDE_CMD_IDLE_IMMEDIATE1 0xE1
#define IDE_CMD_IDLE_IMMEDIATE2 0x95
#define IDE_CMD_INITIALIZE_DRIVE_PARAMETERS 0x91
#define IDE_CMD_INITIALIZE_DEVICE_PARAMETERS 0x91
#define IDE_CMD_NOP 0x00
#define IDE_CMD_PACKET 0xA0
#define IDE_CMD_READ_BUFFER 0xE4
#define IDE_CMD_READ_DMA 0xC8
#define IDE_CMD_READ_DMA_QUEUED 0xC7
#define IDE_CMD_READ_MULTIPLE 0xC4
#define IDE_CMD_READ_SECTORS 0x20
#define IDE_CMD_READ_SECTORS_EXT 0x24
#define IDE_CMD_READ_VERIFY_SECTORS 0x40
#define IDE_CMD_RECALIBRATE 0x10
#define IDE_CMD_SEEK 0x70
#define IDE_CMD_SET_FEATURES 0xEF
#define IDE_CMD_SET_MAX_ADDR_EXT 0x24
#define IDE_CMD_SET_MULTIPLE_MODE 0xC6
#define IDE_CMD_SLEEP1 0xE6
#define IDE_CMD_SLEEP2 0x99
#define IDE_CMD_STANDBY1 0xE2
#define IDE_CMD_STANDBY2 0x96
#define IDE_CMD_STANDBY_IMMEDIATE1 0xE0
#define IDE_CMD_STANDBY_IMMEDIATE2 0x94
#define IDE_CMD_WRITE_BUFFER 0xE8
#define IDE_CMD_WRITE_DMA 0xCA
#define IDE_CMD_WRITE_DMA_QUEUED 0xCC
#define IDE_CMD_WRITE_MULTIPLE 0xC5
#define IDE_CMD_WRITE_SECTORS 0x30
#define IDE_CMD_WRITE_VERIFY 0x3C
/* IDE_CMD_SET_FEATURE sub commands */
#define IDE_FEATURE_CFA_ENABLE_8BIT_PIO 0x01
#define IDE_FEATURE_ENABLE_WRITE_CACHE 0x02
#define IDE_FEATURE_SET_TRANSFER_MODE 0x03
#define IDE_FEATURE_ENABLE_POWER_MANAGEMENT 0x05
#define IDE_FEATURE_ENABLE_POWERUP_IN_STANDBY 0x06
#define IDE_FEATURE_STANDBY_SPINUP_DRIVE 0x07
#define IDE_FEATURE_CFA_ENABLE_POWER_MODE1 0x0A
#define IDE_FEATURE_DISABLE_MEDIA_STATUS_NOTIFICATION 0x31
#define IDE_FEATURE_ENABLE_AUTOMATIC_ACOUSTIC_MANAGEMENT 0x42
#define IDE_FEATURE_SET_MAXIMUM_HOST_INTERFACE_SECTOR_TIMES 0x43
#define IDE_FEATURE_DISABLE_READ_LOOKAHEAD 0x55
#define IDE_FEATURE_ENABLE_RELEASE_INTERRUPT 0x5D
#define IDE_FEATURE_ENABLE_SERVICE_INTERRUPT 0x5E
#define IDE_FEATURE_DISABLE_REVERTING_TO_POWERON_DEFAULTS 0x66
#define IDE_FEATURE_CFA_DISABLE_8BIT_PIO 0x81
#define IDE_FEATURE_DISABLE_WRITE_CACHE 0x82
#define IDE_FEATURE_DISABLE_POWER_MANAGEMENT 0x85
#define IDE_FEATURE_DISABLE_POWERUP_IN_STANDBY 0x86
#define IDE_FEATURE_CFA_DISABLE_POWER_MODE1 0x8A
#define IDE_FEATURE_ENABLE_MEDIA_STATUS_NOTIFICATION 0x95
#define IDE_FEATURE_ENABLE_READ_LOOKAHEAD 0xAA
#define IDE_FEATURE_DISABLE_AUTOMATIC_ACOUSTIC_MANAGEMENT 0xC2
#define IDE_FEATURE_ENABLE_REVERTING_TO_POWERON_DEFAULTS 0xCC
#define IDE_FEATURE_DISABLE_SERVICE_INTERRUPT 0xDE
#define IDE_MAX_CONTROLLERS 2
#define IDE_MAX_DRIVES (IDE_MAX_CONTROLLERS*2)
#define SECTOR_SIZE 512
#define SECTOR_SHIFT 9
/* Maximum block_size that may be set. */
#define DISK_BUFFER_SIZE (18 * SECTOR_SIZE)
extern int ide_probe(int drive);
extern int ide_read(int drive, sector_t sector, void *buffer);
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