[PATCH 06/13] ATA/DISK: The BIOS based disk driver is not an interface
Juergen Beisert
jbe at pengutronix.de
Tue Nov 22 03:29:20 EST 2011
Using the BIOS to access attached hard disks means a full disk driver, not only
an interface to the drives.
Signed-off-by: Juergen Beisert <jbe at pengutronix.de>
---
drivers/ata/Kconfig | 6 +-
drivers/ata/Makefile | 2 +-
drivers/ata/bios.c | 290 -----------------------------------------
drivers/ata/disk_bios_drive.c | 290 +++++++++++++++++++++++++++++++++++++++++
drivers/ata/disk_drive.c | 10 +-
5 files changed, 299 insertions(+), 299 deletions(-)
delete mode 100644 drivers/ata/bios.c
create mode 100644 drivers/ata/disk_bios_drive.c
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 025ff94..f3b2939 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -20,9 +20,7 @@ config DISK_DRIVE
of devices is using a partition table in the first sector. Say Y here
if you intend to work with disk drives (also CF cards and SD cards).
-comment "interface types"
-
-config ATA_BIOS
+config DISK_BIOS
bool "BIOS based"
select DISK_DRIVE
depends on X86_BIOS_BRINGUP
@@ -32,4 +30,6 @@ config ATA_BIOS
media to work on. Disadvantage is: Due to its 16 bit nature it is
slow.
+comment "interface types"
+
endif
diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile
index c3260d7..10f3957 100644
--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
@@ -1,7 +1,7 @@
# drive types
obj-$(CONFIG_DISK_DRIVE) += disk_drive.o
+obj-$(CONFIG_DISK_BIOS) += disk_bios_drive.o
# interface types
-obj-$(CONFIG_ATA_BIOS) += bios.o
diff --git a/drivers/ata/bios.c b/drivers/ata/bios.c
deleted file mode 100644
index 6e2377c..0000000
--- a/drivers/ata/bios.c
+++ /dev/null
@@ -1,290 +0,0 @@
-/*
- * Copyright (C) 2009 Juergen Beisert, Pengutronix
- *
- * Mostly stolen from the GRUB2 project
- * Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008 Free Software Foundation, Inc.
- *
- * 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., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- *
- */
-
-/**
- * @file
- * @brief Media communication layer through the standard 16 bit PC-BIOS
- *
- * This communication driver does all accesses to the boot medium via 16 bit
- * real mode calls into the standard BIOS. Due to this method, its possible
- * to use all the medias to boot from that are supported by the BIOS. This
- * also includes emulated only medias.
- *
- * To be able to call the real mode BIOS, this driver must switch back to
- * real mode for each access. This will slow down the access a little bit, but
- * we are a boot loader here, not an operating system...
- *
- * Note: We need scratch memory for the BIOS communication, because the BIOS
- * can only handle memory below 0xA0000. So we must copy all data between
- * the flat mode buffers and realmode buffers.
- *
- * Note: This driver makes no sense on other architectures than x86.
- *
- * Note: This driver does only support LBA addressing. Currently no CHS!
- */
-
-#include <stdio.h>
-#include <linux/types.h>
-#include <init.h>
-#include <driver.h>
-#include <string.h>
-#include <xfuncs.h>
-#include <asm/syslib.h>
-#include <ata.h>
-#include <errno.h>
-
-/**
- * Sector count handled in one count
- *
- * @todo 127 are always possible, some BIOS manufacturer supports up to 255.
- * Is it's worth to detect Phoenic's restriction?
- */
-#define SECTORS_AT_ONCE 64
-
-/** Size of one sector in bytes */
-#define SECTOR_SIZE 512
-
-/** Command to read sectors from media */
-#define BIOS_READ_CMD 0
-
-/** Command to write sectors to media */
-#define BIOS_WRT_CMD 1
-
-/**
- * "Disk Address Packet Structure" to be used when calling
- * BIOS's int13, function 0x42/0x43
- */
-struct DAPS
-{
- uint8_t size; /**< always '16' */
- uint8_t res1; /**< always '0' */
- int8_t count; /**< number of sectors 0...127 */
- uint8_t res2; /**< always '0' */
- uint16_t offset; /**< buffer address: offset */
- uint16_t segment; /**< buffer address: segment */
- uint64_t lba; /**< LBA of the start sector */
-} __attribute__ ((packed));
-
-/**
- * Collection of data we need to know about the connected drive
- */
-struct media_access {
- int drive_no; /**< drive number used by the BIOS */
- int is_cdrom; /**< drive is a CDROM e.g. no write support */
-};
-
-/**
- * Scratch memory for BIOS communication to handle data in chunks of 32 kiB
- *
- * Note: This variable is located in the .bss segment, assuming it is located
- * below 0xA0000. If not, the BIOS is not able to read or store any data
- * from/to it. The variable must also aligned to a 16 byte boundary to easify
- * linear to segment:offset address conversion.
- */
-static uint8_t scratch_buffer[SECTORS_AT_ONCE * SECTOR_SIZE] __attribute__((aligned(16)));
-
-/**
- * Communication buffer for the 16 bit int13 BIOS call
- *
- * Note: This variable is located in the .bss segment, assuming it is located
- * below 0xA0000. If not, the BIOS is not able to read or store any data
- * from/to it. The variable must also aligned to a 16 byte boundary to easify
- * linear to segment:offset conversion.
- */
-static struct DAPS bios_daps __attribute__((aligned(16)));
-
-/**
- * @param media our data we need to do the access
- * @param cmd Command to forward to the BIOS
- * @param sector_start LBA of the start sector
- * @param sector_count Sector count
- * @param buffer Buffer to read from or write to (in the low memory area)
- * @return 0 on success, anything else on failure
- */
-static int biosdisk_bios_call(struct media_access *media, int cmd, uint64_t sector_start, unsigned sector_count, void *buffer)
-{
- int rc;
-
- /* prepare the DAPS for the int13 call */
- bios_daps.size = sizeof(struct DAPS);
- bios_daps.res1 = 0;
- bios_daps.count = sector_count; /* always less than 128! */
- bios_daps.res2 = 0;
- bios_daps.segment = (unsigned long)buffer >> 4;
- bios_daps.offset = (unsigned long)buffer - (unsigned long)(bios_daps.segment << 4);
- bios_daps.lba = sector_start;
-
- if (cmd == BIOS_READ_CMD)
- rc = bios_disk_rw_int13_extensions(0x42, media->drive_no, &bios_daps);
- else if (cmd == BIOS_WRT_CMD)
- rc = bios_disk_rw_int13_extensions(0x43, media->drive_no, &bios_daps);
- else
- return -1;
-
- return rc;
-}
-
-/**
- * Read a chunk of sectors from media
- * @param dev our data we need to do the access
- * @param sector_start Sector's LBA number to start read from
- * @param sector_count Sectors to read
- * @param buffer Buffer to read into
- * @return 0 on success, anything else on failure
- *
- * This routine expects the buffer has the correct size to store all data!
- */
-static int biosdisk_read(struct device_d *dev, uint64_t sector_start, unsigned sector_count, void *buffer)
-{
- int rc;
- struct ata_interface *intf = dev->platform_data;
- struct media_access *media = intf->priv;
-
- while (sector_count >= SECTORS_AT_ONCE) {
- rc = biosdisk_bios_call(media, BIOS_READ_CMD, sector_start, SECTORS_AT_ONCE, scratch_buffer);
- if (rc != 0)
- return rc;
- __builtin_memcpy(buffer, scratch_buffer, sizeof(scratch_buffer));
- buffer += sizeof(scratch_buffer);
- sector_start += SECTORS_AT_ONCE;
- sector_count -= SECTORS_AT_ONCE;
- };
-
- /* Are sectors still remaining? */
- if (sector_count) {
- rc = biosdisk_bios_call(media, BIOS_READ_CMD, sector_start, sector_count, scratch_buffer);
- __builtin_memcpy(buffer, scratch_buffer, sector_count * SECTOR_SIZE);
- } else
- rc = 0;
-
- return rc;
-}
-
-/**
- * Write a chunk of sectors to media
- * @param dev our data we need to do the access
- * @param sector_start Sector's LBA number to start write to
- * @param sector_count Sectors to write
- * @param buffer Buffer to write from
- * @return 0 on success, anything else on failure
- *
- * This routine expects the buffer has the correct size to read all data!
- */
-static int biosdisk_write(struct device_d *dev, uint64_t sector_start, unsigned sector_count, const void *buffer)
-{
- int rc;
- struct ata_interface *intf = dev->platform_data;
- struct media_access *media = intf->priv;
-
- while (sector_count >= SECTORS_AT_ONCE) {
- __builtin_memcpy(scratch_buffer, buffer, sizeof(scratch_buffer));
- rc = biosdisk_bios_call(media, BIOS_WRT_CMD, sector_start, SECTORS_AT_ONCE, scratch_buffer);
- if (rc != 0)
- return rc;
- buffer += sizeof(scratch_buffer);
- sector_start += SECTORS_AT_ONCE;
- sector_count -= SECTORS_AT_ONCE;
- };
-
- /* Are sectors still remaining? */
- if (sector_count) {
- __builtin_memcpy(scratch_buffer, buffer, sector_count * SECTOR_SIZE);
- rc = biosdisk_bios_call(media, BIOS_WRT_CMD, sector_start, sector_count, scratch_buffer);
- } else
- rc = 0;
-
- return rc;
-}
-
-/**
- * Probe for connected drives and register them
- *
- * Detecting if a drive is present is done by simply reading its MBR.
- *
- * FIXME: Relation between BIOS disk numbering scheme and our representation
- * here in barebox (and later on in the linux kernel)
- */
-static int biosdisk_probe(struct device_d *dev)
-{
- int drive, rc;
- struct media_access media, *m;
- struct device_d *drive_dev;
- struct ata_interface *p;
-
- for (drive = 0x80; drive < 0x90; drive++) {
- media.drive_no = drive;
- media.is_cdrom = 0; /* don't know yet */
- rc = biosdisk_bios_call(&media, BIOS_READ_CMD, 0, 1, scratch_buffer);
- if (rc != 0)
- continue;
-
- printf("BIOSdrive %d seems valid. Registering...\n", media.drive_no);
-
- drive_dev = xzalloc(sizeof(struct device_d) + sizeof(struct media_access) + sizeof(struct ata_interface));
- if (drive_dev == NULL) {
- dev_err(dev, "Out of memory\n");
- return -1;
- }
- m = (struct media_access*)&drive_dev[1];
- p = (struct ata_interface*)&m[1];
-
- m->drive_no = drive;
- m->is_cdrom = 0;
-
- p->write = biosdisk_write;
- p->read = biosdisk_read;
- p->priv = m;
-
- strcpy(drive_dev->name, "biosdisk");
- drive_dev->id = drive - 0x80;
- drive_dev->resource[0].start = 0;
- drive_dev->platform_data = p;
-
- register_device(drive_dev);
- }
-
- return 0;
-}
-
-static struct driver_d biosdisk_driver = {
- .name = "biosdrive",
- .probe = biosdisk_probe,
-};
-
-static int biosdisk_init(void)
-{
- /* sanity */
- if (scratch_buffer > (uint8_t*)0x9FFFF) {
- printf("BIOS driver: Scratch memory not in real mode area. Cannot continue!\n");
- return -EIO;
- }
- if (&bios_daps > (struct DAPS*)0x9FFFF) {
- printf("BIOS driver: DAPS memory not in real mode area. Cannot continue!\n");
- return -EIO;
- }
-
- register_driver(&biosdisk_driver);
- return 0;
-}
-
-device_initcall(biosdisk_init);
diff --git a/drivers/ata/disk_bios_drive.c b/drivers/ata/disk_bios_drive.c
new file mode 100644
index 0000000..6e2377c
--- /dev/null
+++ b/drivers/ata/disk_bios_drive.c
@@ -0,0 +1,290 @@
+/*
+ * Copyright (C) 2009 Juergen Beisert, Pengutronix
+ *
+ * Mostly stolen from the GRUB2 project
+ * Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008 Free Software Foundation, Inc.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+/**
+ * @file
+ * @brief Media communication layer through the standard 16 bit PC-BIOS
+ *
+ * This communication driver does all accesses to the boot medium via 16 bit
+ * real mode calls into the standard BIOS. Due to this method, its possible
+ * to use all the medias to boot from that are supported by the BIOS. This
+ * also includes emulated only medias.
+ *
+ * To be able to call the real mode BIOS, this driver must switch back to
+ * real mode for each access. This will slow down the access a little bit, but
+ * we are a boot loader here, not an operating system...
+ *
+ * Note: We need scratch memory for the BIOS communication, because the BIOS
+ * can only handle memory below 0xA0000. So we must copy all data between
+ * the flat mode buffers and realmode buffers.
+ *
+ * Note: This driver makes no sense on other architectures than x86.
+ *
+ * Note: This driver does only support LBA addressing. Currently no CHS!
+ */
+
+#include <stdio.h>
+#include <linux/types.h>
+#include <init.h>
+#include <driver.h>
+#include <string.h>
+#include <xfuncs.h>
+#include <asm/syslib.h>
+#include <ata.h>
+#include <errno.h>
+
+/**
+ * Sector count handled in one count
+ *
+ * @todo 127 are always possible, some BIOS manufacturer supports up to 255.
+ * Is it's worth to detect Phoenic's restriction?
+ */
+#define SECTORS_AT_ONCE 64
+
+/** Size of one sector in bytes */
+#define SECTOR_SIZE 512
+
+/** Command to read sectors from media */
+#define BIOS_READ_CMD 0
+
+/** Command to write sectors to media */
+#define BIOS_WRT_CMD 1
+
+/**
+ * "Disk Address Packet Structure" to be used when calling
+ * BIOS's int13, function 0x42/0x43
+ */
+struct DAPS
+{
+ uint8_t size; /**< always '16' */
+ uint8_t res1; /**< always '0' */
+ int8_t count; /**< number of sectors 0...127 */
+ uint8_t res2; /**< always '0' */
+ uint16_t offset; /**< buffer address: offset */
+ uint16_t segment; /**< buffer address: segment */
+ uint64_t lba; /**< LBA of the start sector */
+} __attribute__ ((packed));
+
+/**
+ * Collection of data we need to know about the connected drive
+ */
+struct media_access {
+ int drive_no; /**< drive number used by the BIOS */
+ int is_cdrom; /**< drive is a CDROM e.g. no write support */
+};
+
+/**
+ * Scratch memory for BIOS communication to handle data in chunks of 32 kiB
+ *
+ * Note: This variable is located in the .bss segment, assuming it is located
+ * below 0xA0000. If not, the BIOS is not able to read or store any data
+ * from/to it. The variable must also aligned to a 16 byte boundary to easify
+ * linear to segment:offset address conversion.
+ */
+static uint8_t scratch_buffer[SECTORS_AT_ONCE * SECTOR_SIZE] __attribute__((aligned(16)));
+
+/**
+ * Communication buffer for the 16 bit int13 BIOS call
+ *
+ * Note: This variable is located in the .bss segment, assuming it is located
+ * below 0xA0000. If not, the BIOS is not able to read or store any data
+ * from/to it. The variable must also aligned to a 16 byte boundary to easify
+ * linear to segment:offset conversion.
+ */
+static struct DAPS bios_daps __attribute__((aligned(16)));
+
+/**
+ * @param media our data we need to do the access
+ * @param cmd Command to forward to the BIOS
+ * @param sector_start LBA of the start sector
+ * @param sector_count Sector count
+ * @param buffer Buffer to read from or write to (in the low memory area)
+ * @return 0 on success, anything else on failure
+ */
+static int biosdisk_bios_call(struct media_access *media, int cmd, uint64_t sector_start, unsigned sector_count, void *buffer)
+{
+ int rc;
+
+ /* prepare the DAPS for the int13 call */
+ bios_daps.size = sizeof(struct DAPS);
+ bios_daps.res1 = 0;
+ bios_daps.count = sector_count; /* always less than 128! */
+ bios_daps.res2 = 0;
+ bios_daps.segment = (unsigned long)buffer >> 4;
+ bios_daps.offset = (unsigned long)buffer - (unsigned long)(bios_daps.segment << 4);
+ bios_daps.lba = sector_start;
+
+ if (cmd == BIOS_READ_CMD)
+ rc = bios_disk_rw_int13_extensions(0x42, media->drive_no, &bios_daps);
+ else if (cmd == BIOS_WRT_CMD)
+ rc = bios_disk_rw_int13_extensions(0x43, media->drive_no, &bios_daps);
+ else
+ return -1;
+
+ return rc;
+}
+
+/**
+ * Read a chunk of sectors from media
+ * @param dev our data we need to do the access
+ * @param sector_start Sector's LBA number to start read from
+ * @param sector_count Sectors to read
+ * @param buffer Buffer to read into
+ * @return 0 on success, anything else on failure
+ *
+ * This routine expects the buffer has the correct size to store all data!
+ */
+static int biosdisk_read(struct device_d *dev, uint64_t sector_start, unsigned sector_count, void *buffer)
+{
+ int rc;
+ struct ata_interface *intf = dev->platform_data;
+ struct media_access *media = intf->priv;
+
+ while (sector_count >= SECTORS_AT_ONCE) {
+ rc = biosdisk_bios_call(media, BIOS_READ_CMD, sector_start, SECTORS_AT_ONCE, scratch_buffer);
+ if (rc != 0)
+ return rc;
+ __builtin_memcpy(buffer, scratch_buffer, sizeof(scratch_buffer));
+ buffer += sizeof(scratch_buffer);
+ sector_start += SECTORS_AT_ONCE;
+ sector_count -= SECTORS_AT_ONCE;
+ };
+
+ /* Are sectors still remaining? */
+ if (sector_count) {
+ rc = biosdisk_bios_call(media, BIOS_READ_CMD, sector_start, sector_count, scratch_buffer);
+ __builtin_memcpy(buffer, scratch_buffer, sector_count * SECTOR_SIZE);
+ } else
+ rc = 0;
+
+ return rc;
+}
+
+/**
+ * Write a chunk of sectors to media
+ * @param dev our data we need to do the access
+ * @param sector_start Sector's LBA number to start write to
+ * @param sector_count Sectors to write
+ * @param buffer Buffer to write from
+ * @return 0 on success, anything else on failure
+ *
+ * This routine expects the buffer has the correct size to read all data!
+ */
+static int biosdisk_write(struct device_d *dev, uint64_t sector_start, unsigned sector_count, const void *buffer)
+{
+ int rc;
+ struct ata_interface *intf = dev->platform_data;
+ struct media_access *media = intf->priv;
+
+ while (sector_count >= SECTORS_AT_ONCE) {
+ __builtin_memcpy(scratch_buffer, buffer, sizeof(scratch_buffer));
+ rc = biosdisk_bios_call(media, BIOS_WRT_CMD, sector_start, SECTORS_AT_ONCE, scratch_buffer);
+ if (rc != 0)
+ return rc;
+ buffer += sizeof(scratch_buffer);
+ sector_start += SECTORS_AT_ONCE;
+ sector_count -= SECTORS_AT_ONCE;
+ };
+
+ /* Are sectors still remaining? */
+ if (sector_count) {
+ __builtin_memcpy(scratch_buffer, buffer, sector_count * SECTOR_SIZE);
+ rc = biosdisk_bios_call(media, BIOS_WRT_CMD, sector_start, sector_count, scratch_buffer);
+ } else
+ rc = 0;
+
+ return rc;
+}
+
+/**
+ * Probe for connected drives and register them
+ *
+ * Detecting if a drive is present is done by simply reading its MBR.
+ *
+ * FIXME: Relation between BIOS disk numbering scheme and our representation
+ * here in barebox (and later on in the linux kernel)
+ */
+static int biosdisk_probe(struct device_d *dev)
+{
+ int drive, rc;
+ struct media_access media, *m;
+ struct device_d *drive_dev;
+ struct ata_interface *p;
+
+ for (drive = 0x80; drive < 0x90; drive++) {
+ media.drive_no = drive;
+ media.is_cdrom = 0; /* don't know yet */
+ rc = biosdisk_bios_call(&media, BIOS_READ_CMD, 0, 1, scratch_buffer);
+ if (rc != 0)
+ continue;
+
+ printf("BIOSdrive %d seems valid. Registering...\n", media.drive_no);
+
+ drive_dev = xzalloc(sizeof(struct device_d) + sizeof(struct media_access) + sizeof(struct ata_interface));
+ if (drive_dev == NULL) {
+ dev_err(dev, "Out of memory\n");
+ return -1;
+ }
+ m = (struct media_access*)&drive_dev[1];
+ p = (struct ata_interface*)&m[1];
+
+ m->drive_no = drive;
+ m->is_cdrom = 0;
+
+ p->write = biosdisk_write;
+ p->read = biosdisk_read;
+ p->priv = m;
+
+ strcpy(drive_dev->name, "biosdisk");
+ drive_dev->id = drive - 0x80;
+ drive_dev->resource[0].start = 0;
+ drive_dev->platform_data = p;
+
+ register_device(drive_dev);
+ }
+
+ return 0;
+}
+
+static struct driver_d biosdisk_driver = {
+ .name = "biosdrive",
+ .probe = biosdisk_probe,
+};
+
+static int biosdisk_init(void)
+{
+ /* sanity */
+ if (scratch_buffer > (uint8_t*)0x9FFFF) {
+ printf("BIOS driver: Scratch memory not in real mode area. Cannot continue!\n");
+ return -EIO;
+ }
+ if (&bios_daps > (struct DAPS*)0x9FFFF) {
+ printf("BIOS driver: DAPS memory not in real mode area. Cannot continue!\n");
+ return -EIO;
+ }
+
+ register_driver(&biosdisk_driver);
+ return 0;
+}
+
+device_initcall(biosdisk_init);
diff --git a/drivers/ata/disk_drive.c b/drivers/ata/disk_drive.c
index c2a6a51..c5c1ee9 100644
--- a/drivers/ata/disk_drive.c
+++ b/drivers/ata/disk_drive.c
@@ -61,7 +61,7 @@ struct partition_entry {
* @param table partition table
* @return size in sectors
*/
-#ifdef CONFIG_ATA_BIOS
+#ifdef CONFIG_DISK_BIOS
static unsigned long disk_guess_size(struct device_d *dev, struct partition_entry *table)
{
int part_order[4] = {0, 1, 2, 3};
@@ -186,14 +186,14 @@ static int disk_probe(struct device_d *dev)
* the drive ordering must not correspond to the Linux drive order,
* use the 'biosdisk' name instead.
*/
-#ifdef CONFIG_ATA_BIOS
+#ifdef CONFIG_DISK_BIOS
if (strcmp(dev->driver->name, "biosdisk") == 0)
atablk->blk.cdev.name = asprintf("biosdisk%d", dev->id);
else
#endif
atablk->blk.cdev.name = asprintf("disk%d", dev->id);
-#ifdef CONFIG_ATA_BIOS
+#ifdef CONFIG_DISK_BIOS
/* On x86, BIOS based disks are coming without a valid .size field */
if (dev->resource[0].size == 0) {
/* guess the size of this drive if not otherwise given */
@@ -223,7 +223,7 @@ on_error:
return rc;
}
-#ifdef CONFIG_ATA_BIOS
+#ifdef CONFIG_DISK_BIOS
static struct driver_d biosdisk_driver = {
.name = "biosdisk",
.probe = disk_probe,
@@ -237,7 +237,7 @@ static struct driver_d disk_driver = {
static int disk_init(void)
{
-#ifdef CONFIG_ATA_BIOS
+#ifdef CONFIG_DISK_BIOS
register_driver(&biosdisk_driver);
#endif
register_driver(&disk_driver);
--
1.7.7.1
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