From: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Rewritten Linux kernel loader
Date: Fri, 18 May 2007 10:46:47 +0200 [thread overview]
Message-ID: <20070518084646.GY14071@os.inf.tu-dresden.de> (raw)
In-Reply-To: <464CC3F1.9040704@zytor.com>
Hi,
On Thu May 17, 2007 at 14:06:57 -0700, H. Peter Anvin wrote:
> +/* Generate an initial boot sector which sets state and jump to
> + a specified vector */
> +static int generate_bootsect(uint32_t gpr[8], uint16_t segs[6], uint16_t ip)
> +{
> + uint8_t bootsect[512], *p;
> + int i;
> +
> + if (bs_table[0] == NULL) {
> + fprintf(stderr, "A disk image must be given for 'hda' when booting "
> + "a Linux kernel\n");
> + exit(1);
> + }
> +
> + memset(bootsect, 0, sizeof(bootsect));
> +
> + /* Copy the MSDOS partition table if possible */
> + bdrv_read(bs_table[0], 0, bootsect, 1);
> +
> + /* Make sure we have a partition signature */
> + bootsect[0x510] = 0x55;
> + bootsect[0x511] = 0xaa;
These two should be decimal instead of hex.
Adam
--
Adam adam@os.inf.tu-dresden.de
Lackorzynski http://os.inf.tu-dresden.de/~adam/
next prev parent reply other threads:[~2007-05-18 8:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-16 21:31 [Qemu-devel] Rewritten Linux kernel loader H. Peter Anvin
2007-05-17 15:14 ` Ed Swierk
2007-05-17 15:27 ` Paul Brook
2007-05-17 21:06 ` H. Peter Anvin
2007-05-18 8:46 ` Adam Lackorzynski [this message]
2007-05-18 16:35 ` H. Peter Anvin
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