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[block] Centralise "san-drive" setting

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The concept of the SAN drive number is meaningful only in a BIOS
environment, where it represents the INT13 drive number (0x80 for the
first hard disk).  We retain this concept in a UEFI environment to
allow for a simple way for iPXE commands to refer to SAN drives.

Centralise the concept of the default drive number, since it is shared
between all supported environments.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2017-03-06 12:25:20 +00:00
parent 4adc7b0290
commit e7ee2eda4b
7 changed files with 40 additions and 51 deletions
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28
src/arch/x86/interface/pcbios/int13.c
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@@ -44,8 +44,6 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <ipxe/pci.h>
#include <ipxe/iso9660.h>
#include <ipxe/eltorito.h>
#include <ipxe/dhcp.h>
#include <ipxe/settings.h>
#include <realmode.h>
#include <bios.h>
#include <biosint.h>
@@ -1992,32 +1990,6 @@ static int int13_describe ( unsigned int drive ) {
return 0;
}
/** The "san-drive" setting */
const struct setting san_drive_setting __setting ( SETTING_SANBOOT_EXTRA,
san-drive ) = {
.name = "san-drive",
.description = "SAN drive number",
.tag = DHCP_EB_SAN_DRIVE,
.type = &setting_type_uint8,
};
/**
* Get default SAN drive number
*
* @ret drive Default drive number
*/
static unsigned int int13_default_drive ( void ) {
unsigned long drive;
/* Use "san-drive" setting, if specified */
if ( fetch_uint_setting ( NULL, &san_drive_setting, &drive ) >= 0 )
return drive;
/* Otherwise, default to booting from first hard disk */
return 0x80;
}
PROVIDE_SANBOOT ( pcbios, san_default_drive, int13_default_drive );
PROVIDE_SANBOOT ( pcbios, san_hook, int13_hook );
PROVIDE_SANBOOT ( pcbios, san_unhook, int13_unhook );
PROVIDE_SANBOOT ( pcbios, san_boot, int13_boot );