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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>
This commit is contained in:
Sven Schnelle 2011-10-22 13:41:16 +02:00
parent 0b86c76cfc
commit 5460097041
2 changed files with 12 additions and 0 deletions
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2
src/arch/x86/include/arch/acpigen.h
View File

@ -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

10
src/cpu/intel/speedstep/acpi.c
View File

@ -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;