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review.coreboot.org / coreboot / 41a2c73b064b6ab68e63dd8ce75ef07561d2857d / . / src / cpu / x86 / sse_enable.inc
blob: 468c118be2c5efe68e8e56c5ab9be487917e3dfb [file] [log] [blame]
Angel Ponsf23ae0b2020-04-02 23:48:12 +0200[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0-only */
Eric Biedermanfcd5ace2004-10-14 19:29:29 +0000[diff] [blame]2
Uwe Hermann5211a702010-09-27 17:53:17 +0000[diff] [blame]3 /* Preserve BIST. */
4 movl %eax, %ebp
Eric Biedermanfcd5ace2004-10-14 19:29:29 +0000[diff] [blame]5
Uwe Hermann5211a702010-09-27 17:53:17 +0000[diff] [blame]6 /* Enable SSE instructions. */
Eric Biedermanfcd5ace2004-10-14 19:29:29 +0000[diff] [blame]7 movl %cr4, %eax
Uwe Hermann5211a702010-09-27 17:53:17 +0000[diff] [blame]8 orl $(1 << 9), %eax
Eric Biedermanfcd5ace2004-10-14 19:29:29 +0000[diff] [blame]9 movl %eax, %cr4
10
Uwe Hermann5211a702010-09-27 17:53:17 +0000[diff] [blame]11 /* Restore BIST. */
Eric Biedermanfcd5ace2004-10-14 19:29:29 +0000[diff] [blame]12 movl %ebp, %eax