From: Michael Brown <mcb30@ipxe.org>
Date: Tue, 26 Aug 2014 13:46:14 +0000 (+0100)
Subject: [prefix] Halt system without burning CPU if we cannot access the payload
X-Git-Tag: v1.20.1~1066
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9d21e1352224f657fbe63fdbbb522adcd1307a44;p=thirdparty%2Fipxe.git

[prefix] Halt system without burning CPU if we cannot access the payload

Signed-off-by: Michael Brown <mcb30@ipxe.org>
---

diff --git a/src/arch/i386/prefix/libprefix.S b/src/arch/i386/prefix/libprefix.S
index 13da652ed..aae07354f 100644
--- a/src/arch/i386/prefix/libprefix.S
+++ b/src/arch/i386/prefix/libprefix.S
@@ -748,7 +748,10 @@ a20_death_message:
 	call	print_hex_dword
 	movw	$payload_death_message, %si
 	call	print_message
-2:	jmp	2b
+2:	/* Halt system */
+	cli
+	hlt
+	jmp	2b
 	.section ".prefix.data", "aw", @progbits
 payload_death_message:
 	.asciz	"\nPayload inaccessible - cannot continue\n"