From patchwork Thu Nov 26 12:22:14 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: Seabios: Fix PkgLength calculation for the SSDT. Date: Thu, 26 Nov 2009 12:22:14 -0000 From: Magnus Christensson X-Patchwork-Id: 603 Message-Id: <4B0E72F6.3060502@virtutech.com> To: coreboot@coreboot.org See attached patch. M. >From d9dc0f50b2ce756e8a3b4ede0a8ecbe76f2afcb8 Mon Sep 17 00:00:00 2001 From: Magnus Christensson Date: Wed, 25 Nov 2009 16:26:58 +0100 Subject: [PATCH 13/13] Fix PkgLength calculation for the SSDT. Signed-off-by: Magnus Christensson --- src/acpi.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/src/acpi.c b/src/acpi.c index 843af69..88007ae 100644 --- a/src/acpi.c +++ b/src/acpi.c @@ -464,10 +464,12 @@ build_ssdt(void) // build processor scope header *(ssdt_ptr++) = 0x10; // ScopeOp if (cpu_length <= 0x3e) { + /* Handle 1-4 CPUs with one byte encoding */ *(ssdt_ptr++) = cpu_length + 1; } else { - *(ssdt_ptr++) = 0x7F; - *(ssdt_ptr++) = (cpu_length + 2) >> 6; + /* Handle 5-314 CPUs with two byte encoding */ + *(ssdt_ptr++) = 0x40 | ((cpu_length + 1) & 0xf); + *(ssdt_ptr++) = (cpu_length + 1) >> 4; } *(ssdt_ptr++) = '_'; // Name *(ssdt_ptr++) = 'P'; -- 1.6.2.5