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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* e7505.h: PCI configuration space for the Intel E7501 memory controller
*/
#ifndef NORTHBRIDGE_INTEL_E7505_E7505_H
#define NORTHBRIDGE_INTEL_E7505_E7505_H
#include <types.h>
size_t northbridge_get_tseg_size(void);
uintptr_t northbridge_get_tseg_base(void);
/************ D0:F0 ************/
// Register offsets
#define SMRBASE 0x14 /* System Memory RCOMP Base Address Register, 32 bit? */
#define MCHCFGNS 0x52 /* MCH (scrubber) configuration register, 16 bit */
#define PAM_0 0x59
#define DRB_ROW_0 0x60 /* DRAM Row Boundary register, 8 bit */
#define DRB_ROW_1 0x61
#define DRB_ROW_2 0x62
#define DRB_ROW_3 0x63
#define DRB_ROW_4 0x64
#define DRB_ROW_5 0x65
#define DRB_ROW_6 0x66
#define DRB_ROW_7 0x67
#define DRA 0x70 /* DRAM Row Attributes registers, 4 x 8 bit */
#define DRT 0x78 /* DRAM Timing register, 32 bit */
#define DRC 0x7C /* DRAM Controller Mode register, 32 bit */
#define DRDCTL 0x80 /* DRAM Read Timing Control register, 16 bit? (if similar to 855PM) */
#define CKDIS 0x8C /* Clock disable register, 8 bit */
#define APSIZE 0xB4
#define TOLM 0xC4 /* Top of Low Memory register, 16 bit */
#define REMAPBASE 0xC6 /* Remap Base Address register, 16 bit */
#define REMAPLIMIT 0xC8 /* Remap Limit Address register, 16 bit */
#define SKPD 0xDE /* Scratchpad register, 16 bit */
#define DVNP 0xE0 /* Device Not Present, 16 bit */
#define MCHTST 0xF4 /* MCH Test Register, 32 bit? (if similar to 855PM) */
#define SMRAMC 0x9D
#define C_BASE_SEG ((0 << 2) | (1 << 1) | (0 << 0))
#define G_SMRAME (1 << 3)
#define D_LCK (1 << 4)
#define D_CLS (1 << 5)
#define D_OPEN (1 << 6)
#define ESMRAMC 0x9E
#define T_EN (1 << 0)
#define TSEG_SZ_128K (0 << 1)
#define TSEG_SZ_256K (1 << 1)
#define TSEG_SZ_512K (2 << 1)
#define TSEG_SZ_1M (3 << 1)
#define TSEG_SZ_MASK TSEG_SZ_1M
#define H_SMRAME (1 << 7)
// CAS# Latency bits in the DRAM Timing (DRT) register
#define DRT_CAS_2_5 (0<<4)
#define DRT_CAS_2_0 (1<<4)
#define DRT_CAS_MASK (3<<4)
// Mode Select (SMS) bits in the DRAM Controller Mode (DRC) register
#define RAM_COMMAND_NOP (1<<4)
#define RAM_COMMAND_PRECHARGE (2<<4)
#define RAM_COMMAND_MRS (3<<4)
#define RAM_COMMAND_EMRS (4<<4)
#define RAM_COMMAND_CBR (6<<4)
#define RAM_COMMAND_NORMAL (7<<4)
#define DRC_DONE (1 << 29)
// RCOMP Memory Map offsets
// Conjecture based on apparent similarity between E7501 and 855PM
// Intel doc. 252613-003 describes these for 855PM
#define SMRCTL 0x20 /* System Memory RCOMP Control Register? */
#define DQCMDSTR 0x30 /* Strength control for DQ and CMD signal groups? */
#define CKESTR 0x31 /* Strength control for CKE signal group? */
#define CSBSTR 0x32 /* Strength control for CS# signal group? */
#define CKSTR 0x33 /* Strength control for CK signal group? */
#define RCVENSTR 0x34 /* Strength control for RCVEnOut# signal group? */
/************ D0:F1 ************/
// Register offsets
#define FERR_GLOBAL 0x40 /* First global error register, 32 bits */
#define NERR_GLOBAL 0x44 /* Next global error register, 32 bits */
#define DRAM_FERR 0x80 /* DRAM first error register, 8 bits */
#define DRAM_NERR 0x82 /* DRAM next error register, 8 bits */
/************ D1:F0 ************/
#define APSIZE1 0x74
#endif /* NORTHBRIDGE_INTEL_E7505_E7505_H */
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