2010-08-25 18:34:07 +00:00
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#define ASM_FILE 1
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2010-08-28 14:21:45 +00:00
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#ifdef TARGET_MULTIBOOT2
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2010-08-25 18:34:07 +00:00
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#include <multiboot2.h>
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2010-08-28 14:21:45 +00:00
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#elif defined (TARGET_MULTIBOOT)
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2010-08-25 18:34:07 +00:00
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#include <multiboot.h>
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#endif
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#define SHUTDOWN_PORT 0x8900
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.text
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/* Align 32 bits boundary. */
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.align 8
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2010-08-28 14:21:45 +00:00
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#ifdef TARGET_MULTIBOOT2
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2010-08-25 18:34:07 +00:00
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/* Multiboot header. */
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multiboot_header:
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/* magic */
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.long MULTIBOOT2_HEADER_MAGIC
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/* ISA: i386 */
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.long MULTIBOOT_ARCHITECTURE_I386
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/* Header length. */
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.long multiboot_header_end - multiboot_header
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/* checksum */
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.long -(MULTIBOOT2_HEADER_MAGIC + MULTIBOOT_ARCHITECTURE_I386 + (multiboot_header_end - multiboot_header))
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.short MULTIBOOT_HEADER_TAG_END
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.short 0
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.long 8
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multiboot_header_end:
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2010-08-28 14:21:45 +00:00
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#elif defined (TARGET_MULTIBOOT)
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2010-08-25 18:34:07 +00:00
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/* Multiboot header. */
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multiboot_header:
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/* magic */
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.long MULTIBOOT_HEADER_MAGIC
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/* flags */
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.long 0
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/* checksum */
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.long -MULTIBOOT_HEADER_MAGIC
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#endif
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.global start
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portmsg:
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xorl %eax, %eax
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1:
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movb 0(%esi), %al
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test %eax, %eax
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jz 1f
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outb %al, %dx
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incl %esi
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jmp 1b
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1:
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ret
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serialmsg:
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1:
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movb 0(%esi), %bl
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testb %bl, %bl
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jz 1f
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movw $0x3fd, %dx
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2:
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inb %dx, %al
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testb $0x20, %al
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jz 2b
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movw $0x3f8, %dx
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movb %bl, %al
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outb %al, %dx
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incl %esi
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jmp 1b
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1:
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ret
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.globl _start
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_start:
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lea message, %esi
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call serialmsg
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lea shutdown, %esi
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movw $SHUTDOWN_PORT, %dx
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call portmsg
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1:
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hlt
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jmp 1b
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shutdown:
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.ascii "Shutdown"
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.byte 0
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message:
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.ascii "Boot Test Passed Successfully\n" SUCCESSFUL_BOOT_STRING "\n"
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.byte 0
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