soc/intel/alderlake: Add get_adl_cpu_type function
This function searches the known MCH device IDs for Alder Lake and
returns the appropriate enum value representing ADL-P, ADL-M, ADL-S, or
unknown.
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: I26354b340e0c5f15ba246c1cb831d7feaf62d2ee
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57151
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/soc/intel/alderlake/cpu.c b/src/soc/intel/alderlake/cpu.c
index b975212..c5dc804 100644
--- a/src/soc/intel/alderlake/cpu.c
+++ b/src/soc/intel/alderlake/cpu.c
@@ -8,6 +8,7 @@
#include <console/console.h>
#include <device/pci.h>
+#include <device/pci_ids.h>
#include <cpu/x86/lapic.h>
#include <cpu/x86/mp.h>
#include <cpu/x86/msr.h>
@@ -131,3 +132,59 @@
/* Thermal throttle activation offset */
configure_tcc_thermal_target();
}
+
+enum adl_cpu_type get_adl_cpu_type(void)
+{
+ const uint16_t adl_m_mch_ids[] = {
+ PCI_DEVICE_ID_INTEL_ADL_M_ID_1,
+ PCI_DEVICE_ID_INTEL_ADL_M_ID_2,
+ };
+ const uint16_t adl_p_mch_ids[] = {
+ PCI_DEVICE_ID_INTEL_ADL_P_ID_1,
+ PCI_DEVICE_ID_INTEL_ADL_P_ID_3,
+ PCI_DEVICE_ID_INTEL_ADL_P_ID_4,
+ PCI_DEVICE_ID_INTEL_ADL_P_ID_5,
+ PCI_DEVICE_ID_INTEL_ADL_P_ID_6,
+ PCI_DEVICE_ID_INTEL_ADL_P_ID_7,
+ PCI_DEVICE_ID_INTEL_ADL_P_ID_8,
+ PCI_DEVICE_ID_INTEL_ADL_P_ID_9,
+ };
+ const uint16_t adl_s_mch_ids[] = {
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_1,
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_2,
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_3,
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_4,
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_5,
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_6,
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_7,
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_8,
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_9,
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_10,
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_11,
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_12,
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_13,
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_14,
+ PCI_DEVICE_ID_INTEL_ADL_S_ID_15,
+ };
+
+ const uint16_t mchid = pci_s_read_config16(PCI_DEV(0, PCI_SLOT(SA_DEVFN_ROOT),
+ PCI_FUNC(SA_DEVFN_ROOT)),
+ PCI_DEVICE_ID);
+
+ for (size_t i = 0; i < ARRAY_SIZE(adl_p_mch_ids); i++) {
+ if (adl_p_mch_ids[i] == mchid)
+ return ADL_P;
+ }
+
+ for (size_t i = 0; i < ARRAY_SIZE(adl_m_mch_ids); i++) {
+ if (adl_m_mch_ids[i] == mchid)
+ return ADL_M;
+ }
+
+ for (size_t i = 0; i < ARRAY_SIZE(adl_s_mch_ids); i++) {
+ if (adl_s_mch_ids[i] == mchid)
+ return ADL_S;
+ }
+
+ return ADL_UNKNOWN;
+}