diff options
Diffstat (limited to 'src/southbridge/intel/lynxpoint/pch.c')
| -rw-r--r-- | src/southbridge/intel/lynxpoint/pch.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/src/southbridge/intel/lynxpoint/pch.c b/src/southbridge/intel/lynxpoint/pch.c index e3c5bb2ef0..0a0e489d6f 100644 --- a/src/southbridge/intel/lynxpoint/pch.c +++ b/src/southbridge/intel/lynxpoint/pch.c @@ -40,19 +40,25 @@ int pch_silicon_id(void) return pch_id; } -int pch_silicon_type(void) +enum pch_platform_type get_pch_platform_type(void) { - static int pch_type = -1; + const u16 did = pci_read_config16(pch_get_lpc_device(), PCI_DEVICE_ID); - if (pch_type < 0) - pch_type = pci_read_config8(pch_get_lpc_device(), - PCI_DEVICE_ID + 1); - return pch_type; + /* Check if this is a LPT-LP or WPT-LP device ID */ + if ((did & 0xff00) == 0x9c00) + return PCH_TYPE_ULT; + + /* Non-LP laptop SKUs have an odd device ID (least significant bit is one) */ + if (did & 1) + return PCH_TYPE_MOBILE; + + /* Desktop and Server SKUs have an even device ID */ + return PCH_TYPE_DESKTOP; } int pch_is_lp(void) { - return pch_silicon_type() == PCH_TYPE_LPT_LP; + return get_pch_platform_type() == PCH_TYPE_ULT; } u16 get_pmbase(void) |