Merge from Etherboot 5.4

3 files changed, 301 insertions, 1 deletions

diff --git a/src/arch/i386/Makefile b/src/arch/i386/Makefile
index 0c258ae8..94b85c80 100644
--- a/src/arch/i386/Makefile
+++ b/src/arch/i386/Makefile
@@ -82,6 +82,10 @@ MEDIA			+= dsk
 OBJS_dskprefix		= dskprefix zdskprefix
 CFLAGS_zdskprefix	= $(CFLAGS_ZPREFIX)
 
+MEDIA			+= hd
+OBJS_hdprefix		= hdprefix zhdprefix
+CFLAGS_zhdprefix	= $(CFLAGS_ZPREFIX)
+
 MEDIA			+= raw
 OBJS_rawprefix		= rawprefix zrawprefix
 CFLAGS_zrawprefix	= $(CFLAGS_ZPREFIX)
diff --git a/src/arch/i386/prefix/hdprefix.S b/src/arch/i386/prefix/hdprefix.S
new file mode 100644
index 00000000..38e62bc3
--- /dev/null
+++ b/src/arch/i386/prefix/hdprefix.S
@@ -0,0 +1,296 @@
+/****************************************************************\
+
+hdprefix.S Copyright (C) 2005 Per Dalgas Jakobsen
+
+This code has been inspired/derived by the OSLoader by Vladislav Aleksandrov.
+http://www.programmersheaven.com/zone5/cat469/40546.htm.
+
+This software may be used and distributed according to the terms
+of the GNU Public License (GPL), incorporated herein by reference.
+
+hdprefix.S is loaded at 0x0000:0x7c00 by the bios-startup routines.
+
+Actions performed by hdprefix:
+1) Load the MBR to LOADSEG:0
+2) Check which partition is active (or try first partition if none active)
+3) Check wether LBA is supported.
+3a) LBA
+3a1) Load PAYLOAD_SECTS sectors from chosen partition to LOADSEG:0
+3b) CHS (standard)
+3b1) Load PAYLOAD_SECTS sectors from chosen partition to LOADSEG:0
+4) Check loaded bootsector for BOOTMAGIC code.
+5) Jump to payload LOADSEG:ENTRYPOINT.
+
+Output with failure points (!#):
+---
+Loading (!1)partition #
+Std. BIOS(!2) | Ext. BIOS(!3)
+Booting...(!4)
+(!5)
+---
+
+!1: Failed to load MBR with Int13,ah=2.
+!2: Failed to load bootrecord+payload with Int13,ah=2.
+!3: Failed to load bootrecord+payload with Int13,ah=42.
+!4: Invalid BOOTMAGIC in loaded bootrecord.
+!5: Jumping to payload.
+
+\*****************************************************************/
+ 
+.equ	BOOTSEG,	0x07c0
+.equ	LOADSEG,	0x1000
+.equ	ENTRYPOINT,	_start
+
+.equ	BOOTMAGIC,	0x0aa55
+
+.equ	partition_table,	0x1be
+.equ	partition_rec_size,	0x10
+
+.equ	boot_ind,	0	/* 80h=active */
+.equ	start_head,	1
+.equ	start_sector,	2	/* bits 0-5 */
+.equ	start_cyl,	3	/* bits 8,9 in bits 6,7 of sector */
+.equ	os_ind,		4	/* os indicator */
+.equ	end_head,	5
+.equ	end_sector,	6	/* bits 0-5 */
+.equ	end_track,	7	/* bits 8,9 in bits 6,7 of sector */
+.equ	nsect,		8	/* sectors preceding partition */
+.equ	lenght,		0x0c	/* length of partition in sectors */
+
+/-------------------------------------------------------------
+
+	.arch i386
+	.text
+	.section ".prefix", "ax", @progbits
+	.code16
+	 
+bootstart:
+	jmp	$BOOTSEG,$_go		/* reload cs:ip */
+
+
+/****************************************************************/
+/* support routines.						*/
+/*--------------------------------------------------------------*/
+_failed:
+	movw	$BOOTSEG,%ax
+	movw	%ax,%ds
+	movw	$_failed_msg_end-_failed_msg,%cx
+	movw	$_failed_msg,%si
+	call	_print_str
+
+	/* stop execution - should probably have option to auto-reboot after delay. */
+_failed_loop:
+	jmp	_failed_loop
+
+/*--------------------------------------------------------------*/
+_print_str:
+	/* cx = count, ds:si = string. */
+	movw	$0x0007,%bx
+	movb	$0x0e,%ah
+_print_loop:
+	lodsb
+	int	$0x10
+	loop	_print_loop
+	ret
+
+/*--------------------------------------------------------------*/			
+_print_char:
+	/* al = char. */
+	movw	$0x0007,%bx
+	movb	$0x0e,%ah
+	int	$0x10
+	ret
+
+/*--------------------------------------------------------------*/
+_print_nl:
+	/* - */
+	movb	$0x0d,%al
+	call	_print_char
+	movb	$0x0a,%al
+	call	_print_char
+	ret
+
+/*--------------------------------------------------------------*/
+_print_hex:
+	/* dx = value */
+	movb	$0x0e,%ah	/* write char, tty mode */
+	movw	$0x0007,%bx	/* page 0, attribute 7 (normal) */
+	call	_print_digit
+	call	_print_digit
+	call	_print_digit
+	/* fall through */
+_print_digit:
+	rolw	$4,%dx		/* rotate so that lowest 4 bits are used */
+	movb	$0x0f,%al	/* mask for nibble */
+	andb	%dl,%al
+	addb	$0x90,%al	/* convert al to ascii hex (four instructions) */
+	daa
+	adcb	$0x40,%al
+	daa
+	int	$0x10
+	ret
+
+/****************************************************************/
+
+
+_go:
+	cli
+	movw	$BOOTSEG,%ax
+	movw	%ax,%ds
+	movw	%ax,%ss
+	movw	$0x2000,%sp	/* good large stack. */
+	sti
+	cld
+	movw	$LOADSEG,%ax
+	movw	%ax,%es
+
+	movw	$_load_msg_end-_load_msg,%cx
+	movw	$_load_msg,%si
+	call	_print_str
+
+/*--- load MBR so we can use its partition table. ---*/
+	xorw	%bx,%bx
+	movw	$0x0001,%cx	/* chs: 0,0,1 */
+	movb	%bh,%dh		/* - */
+	movb	$0x80,%dl
+	movw	$0x0201,%ax	/* read one sector (MBR) */
+	int	$0x13
+	jc	_failed
+
+/*--- find the active partition ---*/
+	movw	$_part_msg_end-_part_msg,%cx
+	movw	$_part_msg,%si
+	call	_print_str
+
+	movw	$partition_table,%di
+	movw	$4,%cx
+_partition_loop:
+	cmpb	$0x80,%es:(%di)		/* active? */
+	je	_partition_found
+	addw	$partition_rec_size,%di
+	loop	_partition_loop
+
+	/*- no partitions marked active - use 1. partition. */
+	movw	$partition_table,%di
+	movw	$4,%cx
+
+_partition_found:
+	movb	$'5',%al			/* convert to ascii */
+	subb	%cl,%al
+	call	_print_char
+	call	_print_nl
+
+/*--- check for lba support ---*/
+	movw	$0x55aa,%bx
+	movb	$0x80,%dl
+	movb	$0x41,%ah
+	int	$0x13
+	jc	__bios
+	cmpw	$0x0aa55,%bx
+	jnz	__bios
+	testb	$1,%cl
+	jz	__bios
+
+/*--- use lba bios calls to read sectors ---*/
+_lba:
+	movw	$_extbios_msg_end-_extbios_msg,%cx
+	movw	$_extbios_msg,%si
+	call	_print_str
+
+	movw	%es:nsect(%di),%ax
+	movw	%ax,_bios_lba_low
+	movw	%es:nsect+2(%di),%ax
+	movw	%ax,_bios_lba_high
+	movb	$0x80,%dl
+	movw	$_disk_address_packet,%si
+	movw	$0x4200,%ax	/* read */
+	int	$0x13
+	jc	_failed
+	jmp	__loaded
+
+/*--- use standard bios calls to read sectors ---*/
+__bios:
+	movw	$_stdbios_msg_end-_stdbios_msg,%cx
+	movw	$_stdbios_msg,%si
+	call	_print_str
+
+	movw	_disk_address_packet+2(,1),%ax	/* only low byte is used. */
+	xorw	%bx,%bx
+	movw	%es:start_sector(%di),%cx
+	movb	%es:start_head(%di),%dh
+	movb	$0x80,%dl
+	movb	$0x02,%ah
+	int	$0x13
+	jc	_failed
+
+__loaded:
+	movw	$_boot_msg_end-_boot_msg,%cx
+	movw	$_boot_msg,%si
+	call	_print_str
+
+	/* check if it has a valid bootrecord. */
+	cmpw	$BOOTMAGIC,%es:510(,1)
+	jne	_failed
+	call	_print_nl
+
+	/* call the payload. */
+	pushl	$0		/* No parameters to preserve for exit path */
+	pushw	$0		/* Use prefix exit path mechanism */
+	jmp	$LOADSEG,$ENTRYPOINT
+
+	.section ".text16", "ax", @progbits
+	.globl	prefix_exit
+prefix_exit:
+	int	$0x19		/* should try to boot machine */
+	.globl	prefix_exit_end
+prefix_exit_end:
+	.previous
+	 
+
+/*--------------------------------------------------------------*/
+
+_load_msg:	.ascii	"Loading "
+_load_msg_end:
+_part_msg:	.ascii	"partition "
+_part_msg_end:
+_boot_msg:	.ascii	"Booting..."
+_boot_msg_end:
+_stdbios_msg:	.ascii	"Std. BIOS\r\n"
+_stdbios_msg_end:
+_extbios_msg:	.ascii	"Ext. BIOS\r\n"
+_extbios_msg_end:
+_failed_msg:	.ascii	"FAILED!!!\r\n"
+_failed_msg_end:
+
+
+/*--------------------------------------------------------------*/
+
+_disk_address_packet:
+		.byte	0x10		/* size of the packet */
+		.byte	0		/* reserved */
+		.word	_verbatim_size_sct	/* number of sectors to read */
+		.word	0x0000		/* offset */
+		.word	LOADSEG 	/* segment of buffer */
+_bios_lba_low:	.word	0
+_bios_lba_high:	.word	0
+		.word	0
+		.word	0
+
+	.rept 32
+		.byte	0
+	.endr
+
+
+/*--- Partition table ------------------------------------------*/
+
+	.org 446, 0
+	.rept 64
+		.byte	0
+	.endr
+
+
+/*--- Magic code -----------------------------------------------*/
+	.org 510, 0
+		.word BOOTMAGIC
+
+/*** END ********************************************************/
diff --git a/src/arch/ia64/core/efi.c b/src/arch/ia64/core/efi.c
index 97e585fc..2da76855 100644
--- a/src/arch/ia64/core/efi.c
+++ b/src/arch/ia64/core/efi.c
@@ -898,7 +898,7 @@ struct Elf_Bhdr *prepare_boot_params(void *header)
 	notes.nf1.n_descsz = sizeof(notes.nf1_bootp_data);
 	notes.nf1.n_type   = EB_BOOTP_DATA;
 	CP(notes.nf1_name,   EB_PARAM_NOTE);
-	notes.nf1_bootp_data = virt_to_phys(BOOTP_DATA_ADDR);
+	notes.nf1_bootp_data = virt_to_phys(&bootp_data);
 
 	notes.nf2.n_namesz = sizeof(EB_PARAM_NOTE);
 	notes.nf2.n_descsz = sizeof(notes.nf2_header);