2 * Copyright (c) 2014 Google, Inc
4 * From Coreboot file of the same name
6 * Copyright (C) 2007-2008 coresystems GmbH
7 * Copyright (C) 2011 Google Inc.
9 * SPDX-License-Identifier: GPL-2.0
12 #ifndef _ACH_ASM_SANDYBRIDGE_H
13 #define _ACH_ASM_SANDYBRIDGE_H
16 #define SANDYBRIDGE_MOBILE 0
17 #define SANDYBRIDGE_DESKTOP 1
18 #define SANDYBRIDGE_SERVER 2
20 /* Device ID for SandyBridge and IvyBridge */
21 #define BASE_REV_SNB 0x00
22 #define BASE_REV_IVB 0x50
23 #define BASE_REV_MASK 0x50
25 /* SandyBridge CPU stepping */
26 #define SNB_STEP_D0 (BASE_REV_SNB + 5) /* Also J0 */
27 #define SNB_STEP_D1 (BASE_REV_SNB + 6)
28 #define SNB_STEP_D2 (BASE_REV_SNB + 7) /* Also J1/Q0 */
30 /* IvyBridge CPU stepping */
31 #define IVB_STEP_A0 (BASE_REV_IVB + 0)
32 #define IVB_STEP_B0 (BASE_REV_IVB + 2)
33 #define IVB_STEP_C0 (BASE_REV_IVB + 4)
34 #define IVB_STEP_K0 (BASE_REV_IVB + 5)
35 #define IVB_STEP_D0 (BASE_REV_IVB + 6)
37 /* Intel Enhanced Debug region must be 4MB */
38 #define IED_SIZE 0x400000
40 /* Northbridge BARs */
41 #define DEFAULT_DMIBAR 0xfed18000 /* 4 KB */
42 #define DEFAULT_EPBAR 0xfed19000 /* 4 KB */
43 #define DEFAULT_RCBABASE 0xfed1c000
44 /* 4 KB per PCIe device */
45 #define DEFAULT_PCIEXBAR CONFIG_PCIE_ECAM_BASE
47 /* Device 0:0.0 PCI configuration space (Host Bridge) */
54 #define GGC 0x50 /* GMCH Graphics Control */
56 #define DEVEN 0x54 /* Device Enable */
57 #define DEVEN_PEG60 (1 << 13)
58 #define DEVEN_IGD (1 << 4)
59 #define DEVEN_PEG10 (1 << 3)
60 #define DEVEN_PEG11 (1 << 2)
61 #define DEVEN_PEG12 (1 << 1)
62 #define DEVEN_HOST (1 << 0)
72 #define LAC 0x87 /* Legacy Access Control */
73 #define SMRAM 0x88 /* System Management RAM Control */
74 #define D_OPEN (1 << 6)
75 #define D_CLS (1 << 5)
76 #define D_LCK (1 << 4)
77 #define G_SMRAME (1 << 3)
78 #define C_BASE_SEG ((0 << 2) | (1 << 1) | (0 << 0))
81 #define TOUUD 0xa8 /* Top of Upper Usable DRAM */
82 #define TSEG 0xb8 /* TSEG base */
83 #define TOLUD 0xbc /* Top of Low Used Memory */
85 #define SKPAD 0xdc /* Scratchpad Data */
87 /* Device 0:1.0 PCI configuration space (PCI Express) */
88 #define BCTRL1 0x3e /* 16bit */
90 /* Device 0:2.0 PCI configuration space (Graphics Device) */
92 #define MSAC 0x62 /* Multi Size Aperture Control */
93 #define SWSCI 0xe8 /* SWSCI enable */
94 #define ASLS 0xfc /* OpRegion Base */
99 #define SSKPD 0x5d14 /* 16bit (scratchpad) */
100 #define BIOS_RESET_CPL 0x5da8 /* 8bit */
106 #define DMIBAR_REG(x) (DEFAULT_DMIBAR + x)
109 * bridge_silicon_revision() - Get the Northbridge revision
111 * @dev: Northbridge device
112 * @return revision ID (bits 3:0) and bridge ID (bits 7:4)
114 int bridge_silicon_revision(struct udevice *dev);