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authorArthur Heymans <arthur@aheymans.xyz>2018-11-28 12:20:43 +0100
committerDuncan Laurie <dlaurie@chromium.org>2018-11-30 21:52:40 +0000
commit1a9efe3b28b42de4ff8191098cec524de563f02d (patch)
tree5fec99e7327d5621b97e717a0b6a45cfd349380b /src/soc/intel/braswell
parenta783305072a34fc4402f87b1d00c7a68a4ba38f8 (diff)
downloadcoreboot-1a9efe3b28b42de4ff8191098cec524de563f02d.tar.xz
soc/intel/braswell: Rework acpi/cpu.asl
Use acpigen_write_processor_cnot to implement notifications to the CPU. Change-Id: I93c11e89da34c5432c6ce0415998b47bad339763 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/29889 Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel/braswell')
-rw-r--r--src/soc/intel/braswell/acpi.c7
-rw-r--r--src/soc/intel/braswell/acpi/cpu.asl53
2 files changed, 15 insertions, 45 deletions
diff --git a/src/soc/intel/braswell/acpi.c b/src/soc/intel/braswell/acpi.c
index e7910724c4..5c66ea127a 100644
--- a/src/soc/intel/braswell/acpi.c
+++ b/src/soc/intel/braswell/acpi.c
@@ -448,6 +448,13 @@ void generate_cpu_entries(struct device *device)
acpigen_pop_len();
}
+
+ /* PPKG is usually used for thermal management
+ of the first and only package. */
+ acpigen_write_processor_package("PPKG", 0, pattrs->num_cpus);
+
+ /* Add a method to notify processor nodes */
+ acpigen_write_processor_cnot(pattrs->num_cpus);
}
unsigned long acpi_madt_irq_overrides(unsigned long current)
diff --git a/src/soc/intel/braswell/acpi/cpu.asl b/src/soc/intel/braswell/acpi/cpu.asl
index 8bfd63274b..5c153f4a59 100644
--- a/src/soc/intel/braswell/acpi/cpu.asl
+++ b/src/soc/intel/braswell/acpi/cpu.asl
@@ -14,60 +14,23 @@
* GNU General Public License for more details.
*/
-/* These devices are created at runtime */
-External (\_PR.CP00, DeviceObj)
-External (\_PR.CP01, DeviceObj)
-External (\_PR.CP02, DeviceObj)
-External (\_PR.CP03, DeviceObj)
+/* These come from the dynamically created CPU SSDT */
+External (\_PR.CNOT, MethodObj)
-
-/* Notify OS to re-read CPU tables, assuming ^2 CPU count */
+/* Notify OS to re-read CPU tables */
Method (PNOT)
{
- If (LGreaterEqual (\PCNT, 2)) {
- Notify (\_PR.CP00, 0x81) /* _CST */
- Notify (\_PR.CP01, 0x81) /* _CST */
- }
- If (LGreaterEqual (\PCNT, 4)) {
- Notify (\_PR.CP02, 0x81) /* _CST */
- Notify (\_PR.CP03, 0x81) /* _CST */
- }
+ \_PR.CNOT (0x81)
}
-/* Notify OS to re-read CPU _PPC limit, assuming ^2 CPU count */
+/* Notify OS to re-read CPU _PPC limit */
Method (PPCN)
{
- If (LGreaterEqual (\PCNT, 2)) {
- Notify (\_PR.CP00, 0x80) /* _PPC */
- Notify (\_PR.CP01, 0x80) /* _PPC */
- }
- If (LGreaterEqual (\PCNT, 4)) {
- Notify (\_PR.CP02, 0x80) /* _PPC */
- Notify (\_PR.CP03, 0x80) /* _PPC */
- }
+ \_PR.CNOT (0x80)
}
-/* Notify OS to re-read Throttle Limit tables, assuming ^2 CPU count */
+/* Notify OS to re-read Throttle Limit tables */
Method (TNOT)
{
- If (LGreaterEqual (\PCNT, 2)) {
- Notify (\_PR.CP00, 0x82) /* _TPC */
- Notify (\_PR.CP01, 0x82) /* _TPC */
- }
- If (LGreaterEqual (\PCNT, 4)) {
- Notify (\_PR.CP02, 0x82) /* _TPC */
- Notify (\_PR.CP03, 0x82) /* _TPC */
- }
-}
-
-/* Return a package containing enabled processor entries */
-Method (PPKG)
-{
- If (LGreaterEqual (\PCNT, 4)) {
- Return (Package() {\_PR.CP00, \_PR.CP01, \_PR.CP02, \_PR.CP03})
- } ElseIf (LGreaterEqual (\PCNT, 2)) {
- Return (Package() {\_PR.CP00, \_PR.CP01})
- } Else {
- Return (Package() {\_PR.CP00})
- }
+ \_PR.CNOT (0x82)
}