From: Sven Schnelle <svens@stackframe.org>
Date: Sat, 22 Oct 2011 11:41:16 +0000 (+0200)
Subject: SPEEDSTEP: write _CST tables
X-Git-Url: http://wien.tomnetworks.com/gitweb/?p=coreboot.git;a=commitdiff_plain;h=54600970417fee0e87d3059f6e6ac0a59d829066

SPEEDSTEP: write _CST tables

Change-Id: Idb4b57044808918de343d31519768d0986840f01
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/321
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
---

diff --git a/src/arch/x86/include/arch/acpigen.h b/src/arch/x86/include/arch/acpigen.h
index 7feaa8e13..0833371d8 100644
--- a/src/arch/x86/include/arch/acpigen.h
+++ b/src/arch/x86/include/arch/acpigen.h
@@ -66,4 +66,6 @@ int acpigen_write_resourcetemplate_footer(int len);
 int acpigen_write_mainboard_resource_template(void);
 int acpigen_write_mainboard_resources(const char *scope, const char *name);
 
+int get_cst_entries(struct cst_entry **) __attribute__((weak));
+
 #endif
diff --git a/src/cpu/intel/speedstep/acpi.c b/src/cpu/intel/speedstep/acpi.c
index 48e1a3ced..8f32e4f63 100644
--- a/src/cpu/intel/speedstep/acpi.c
+++ b/src/cpu/intel/speedstep/acpi.c
@@ -62,6 +62,11 @@ static int get_fsb(void)
 	return 200;
 }
 
+int get_cst_entries(struct cst_entry **entries __attribute__((unused)))
+{
+	return 0;
+}
+
 void generate_cpu_entries(void)
 {
 	int len_pr, len_ps;
@@ -70,6 +75,9 @@ void generate_cpu_entries(void)
 	int totalcores = determine_total_number_of_cores();
 	int cores_per_package = (cpuid_ebx(1)>>16) & 0xff;
 	int numcpus = totalcores/cores_per_package; // this assumes that all CPUs share the same layout
+	int count;
+	struct cst_entry *cst_entries;
+
 	printk(BIOS_DEBUG, "Found %d CPU(s) with %d core(s) each.\n", numcpus, cores_per_package);
 
 	for (cpuID=1; cpuID <=numcpus; cpuID++) {
@@ -81,6 +89,8 @@ void generate_cpu_entries(void)
 		len_pr = acpigen_write_processor((cpuID-1)*cores_per_package+coreID-1, pcontrol_blk, plen);
 			len_pr += acpigen_write_empty_PCT();
 			len_pr += acpigen_write_PSD_package(cpuID-1,cores_per_package,SW_ANY);
+			if ((count = get_cst_entries(&cst_entries)) > 0)
+				len_pr += acpigen_write_CST_package(cst_entries, count);
 			len_pr += acpigen_write_name("_PSS");
 
 			int max_states=8;