1 /* ----------------------------------------------------------------------- *
2 *
3 * Copyright 2009-2010 Intel Corporation; author: H. Peter Anvin
4 *
5 * Permission is hereby granted, free of charge, to any person
6 * obtaining a copy of this software and associated documentation
7 * files (the "Software"), to deal in the Software without
8 * restriction, including without limitation the rights to use,
9 * copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom
11 * the Software is furnished to do so, subject to the following
12 * conditions:
13 *
14 * The above copyright notice and this permission notice shall
15 * be included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
19 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
21 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
22 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
24 * OTHER DEALINGS IN THE SOFTWARE.
25 *
26 * ----------------------------------------------------------------------- */
27
28 /*
29 * solaris.c
30 *
31 * Solaris DHCP hack
32 *
33 * Solaris uses a nonstandard hack to pass DHCP information from a netboot.
34 */
35
36 #include "mboot.h"
37 #include <syslinux/pxe.h>
38 #include <syslinux/config.h>
39
kernel_is_solaris(const Elf32_Ehdr * eh)40 bool kernel_is_solaris(const Elf32_Ehdr *eh)
41 {
42 return eh->e_ident[EI_OSABI] == 6; /* ABI == Solaris */
43 }
44
mboot_solaris_dhcp_hack(void)45 void mboot_solaris_dhcp_hack(void)
46 {
47 void *dhcpdata;
48 size_t dhcplen;
49
50 if (syslinux_derivative_info()->c.filesystem != SYSLINUX_FS_PXELINUX)
51 return;
52
53 if (!pxe_get_cached_info(PXENV_PACKET_TYPE_DHCP_ACK, &dhcpdata, &dhcplen)) {
54 mbinfo.drives_addr = map_data(dhcpdata, dhcplen, 4, 0);
55 if (mbinfo.drives_addr) {
56 mbinfo.drives_length = dhcplen;
57 mbinfo.boot_device = 0x20ffffff;
58 mbinfo.flags =
59 (mbinfo.flags & ~MB_INFO_DRIVE_INFO) | MB_INFO_BOOTDEV;
60 }
61 }
62 }
63