| Nick Vaccaro | 2dd7b6b | 2018-08-09 16:18:02 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2018 Google Inc. |
| 5 | * Copyright (C) 2018 Intel Corporation. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; version 2 of the License. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | */ |
| 16 | |
| 17 | #include <baseboard/variants.h> |
| 18 | #include <chip.h> |
| 19 | #include <device/device.h> |
| 20 | #include <device/pci_ids.h> |
| 21 | #include <device/pci_ops.h> |
| 22 | |
| 23 | /* PL2 limit in watts for AML and KBL */ |
| 24 | #define PL2_AML 18 |
| 25 | #define PL2_KBL 15 |
| 26 | |
| 27 | static uint32_t get_pl2(void) |
| 28 | { |
| 29 | uint16_t id; |
| 30 | id = pci_read_config16(SA_DEV_IGD, PCI_DEVICE_ID); |
| 31 | /* Assume we only have KLB-Y and AML-Y SKUs */ |
| 32 | if (id == PCI_DEVICE_ID_INTEL_KBL_GT2_SULXM) |
| 33 | return PL2_KBL; |
| 34 | |
| 35 | return PL2_AML; |
| 36 | } |
| 37 | |
| 38 | /* Override dev tree settings per board */ |
| 39 | void variant_devtree_update(void) |
| 40 | { |
| 41 | struct device *root = SA_DEV_ROOT; |
| 42 | config_t *cfg = root->chip_info; |
| 43 | |
| 44 | /* Update PL2 based on CPU */ |
| 45 | cfg->tdp_pl2_override = get_pl2(); |
| 46 | } |