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authorH. Peter Anvin <hpa@zytor.com>2009-04-26 19:52:39 -0700
committerH. Peter Anvin <hpa@zytor.com>2009-04-26 19:54:54 -0700
commit619579f87baddecc8601281215f878b57faa0f67 (patch)
tree271d1aa46a67d36891c1abb6b0f2184c44f0f321 /com32/mboot/solaris.c
parente57c9da3f1b4d8426f68b8fb0c1b6ebcf0b43bda (diff)
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mboot: reimplement the Solaris DHCP hack, add compliant a.out modesyslinux-3.80-pre1
Reimplement the Solaris DHCP information passing hack. Add a spec-compliant mode for the "a.out kludge". The spec is pretty clear that the bit should override the ELF header (after all, otherwise there wouldn't be any need for the bit), but Grub disagrees. We default to Grub-compliant mode, as Solaris seems to set the bit even though it's an ELF kernel, but add the option to enable spec-compliant mode, as apparently some versions of FreeBSD need it. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'com32/mboot/solaris.c')
-rw-r--r--com32/mboot/solaris.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/com32/mboot/solaris.c b/com32/mboot/solaris.c
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+++ b/com32/mboot/solaris.c
@@ -0,0 +1,51 @@
+/* ----------------------------------------------------------------------- *
+ *
+ * Copyright 2007-2009 H. Peter Anvin - All Rights Reserved
+ * Copyright 2009 H. Peter Anvin - All Rights Reserved
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall
+ * be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * solaris.c
+ *
+ * Solaris DHCP hack
+ *
+ * Solaris uses a nonstandard hack to pass DHCP information from a netboot.
+ */
+
+#include "mboot.h"
+#include <syslinux/pxe.h>
+
+void mboot_solaris_dhcp_hack(void)
+{
+ void *dhcpdata;
+ size_t dhcplen;
+
+ if (!pxe_get_cached_info(PXENV_PACKET_TYPE_DHCP_ACK, &dhcpdata, &dhcplen)) {
+ mbinfo.drives_addr = map_data(dhcpdata, dhcplen, 4, 0);
+ mbinfo.drives_length = dhcplen;
+ mbinfo.boot_device = 0x20ffffff;
+ mbinfo.flags = (mbinfo.flags & ~MB_INFO_DRIVE_INFO) | MB_INFO_BOOTDEV;
+ }
+}