1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2021
4 * lixinde <lixinde@phytium.com.cn>
5 * weichangzheng <weichangzheng@phytium.com.cn>
6 */
7
8 #include <stdio.h>
9 #include <linux/arm-smccc.h>
10 #include <init.h>
11 #include "cpu.h"
12
13 struct ddr_spd {
14 /******************* read from spd *****************/
15 u8 dimm_type; /* 1: RDIMM;2: UDIMM;3: SODIMM;4: LRDIMM */
16 u8 data_width; /* 0: x4; 1: x8; 2: x16 */
17 u8 mirror_type;/* 0: stardard; 1: mirror */
18 u8 ecc_type; /* 0: no-ecc; 1:ecc */
19 u8 dram_type; /* 0xB: DDR3; 0xC: DDR4 */
20 u8 rank_num;
21 u8 row_num;
22 u8 col_num;
23
24 u8 bg_num; /*only DDR4*/
25 u8 bank_num;
26 u16 module_manufacturer_id;
27 u16 taamin;
28 u16 trcdmin;
29
30 u16 trpmin;
31 u16 trasmin;
32 u16 trcmin;
33 u16 tfawmin;
34
35 u16 trrd_smin; /*only DDR4*/
36 u16 trrd_lmin; /*only DDR4*/
37 u16 tccd_lmin; /*only DDR4*/
38 u16 twrmin;
39
40 u16 twtr_smin; /*only DDR4*/
41 u16 twtr_lmin; /*only DDR4*/
42 u16 twtrmin; /*only DDR3*/
43 u16 trrdmin; /*only DDR3*/
44
45 /******************* RCD control words *****************/
46 u8 f0rc03; /*bit[3:2]:CS bit[1:0]:CA */
47 u8 f0rc04; /*bit[3:2]:ODT bit[1:0]:CKE */
48 u8 f0rc05; /*bit[3:2]:CLK-A side bit[1:0]:CLK-B side */
49 u8 bc00;
50 u8 bc01;
51 u8 bc02;
52 u8 bc03;
53 u8 bc04;
54
55 u8 bc05;
56 u8 f5bc5x;
57 u8 f5bc6x;
58 /******************* LRDIMM special *****************/
59 u8 vrefdq_pr0;
60 u8 vrefdq_mdram;
61 u8 rtt_mdram_1866;
62 u8 rtt_mdram_2400;
63 u8 rtt_mdram_3200;
64
65 u8 drive_dram;
66 u8 odt_dram_1866;
67 u8 odt_dram_2400;
68 u8 odt_dram_3200;
69 u8 park_dram_1866;
70 u8 park_dram_2400;
71 u8 park_dram_3200;
72 u8 rcd_num;
73 } __attribute((aligned(4)));
74
75 struct mcu_config {
76 u32 magic;
77 u32 version;
78 u32 size;
79 u8 rev1[4];
80
81 u8 ch_enable;
82 u8 misc1_enable;
83 u8 misc2_enable;
84 u8 force_spd_enable;
85 u8 misc3_enable;
86 u8 train_debug;
87 u8 train_recover;
88 u8 rev2[9];
89
90 struct ddr_spd ddr_spd_info[2];
91 } __attribute((aligned(4)));
92
get_mcu_up_info_default(struct mcu_config * pm)93 static void get_mcu_up_info_default(struct mcu_config *pm)
94 {
95 pm->magic = PARAMETER_MCU_MAGIC;
96 pm->version = PARAM_MCU_VERSION;
97 pm->size = PARAM_MCU_SIZE;
98 pm->ch_enable = PARAM_CH_ENABLE;
99 pm->misc1_enable = PARAM_ECC_ENABLE;
100 pm->force_spd_enable = PARAM_FORCE_SPD_DISABLE;
101 pm->misc3_enable = PARAM_MCU_MISC_ENABLE;
102 pm->train_recover = 0x0;
103 }
104
init_dimm_param(u8 ch,struct mcu_config * pm)105 static u8 init_dimm_param(u8 ch, struct mcu_config *pm)
106 {
107 debug("manual config dimm info...\n");
108 pm->ddr_spd_info[ch].dimm_type = UDIMM_TYPE;
109 pm->ddr_spd_info[ch].data_width = DIMM_X8;
110 pm->ddr_spd_info[ch].mirror_type = NO_MIRROR;
111 pm->ddr_spd_info[ch].ecc_type = NO_ECC_TYPE;
112 pm->ddr_spd_info[ch].dram_type = DDR4_TYPE;
113 pm->ddr_spd_info[ch].rank_num = 1;
114 pm->ddr_spd_info[ch].row_num = 16;
115 pm->ddr_spd_info[ch].col_num = 10;
116 pm->ddr_spd_info[ch].bg_num = 4;
117 pm->ddr_spd_info[ch].bank_num = 4;
118 pm->ddr_spd_info[ch].taamin = 13750;
119 pm->ddr_spd_info[ch].trcdmin = 13750;
120
121 pm->ddr_spd_info[ch].trpmin = 13750;
122 pm->ddr_spd_info[ch].trasmin = 32000;
123 pm->ddr_spd_info[ch].trcmin = 45750;
124 pm->ddr_spd_info[ch].tfawmin = 21000;
125
126 pm->ddr_spd_info[ch].trrd_smin = 3000;
127 pm->ddr_spd_info[ch].trrd_lmin = 4900;
128 pm->ddr_spd_info[ch].tccd_lmin = 5000;
129 pm->ddr_spd_info[ch].twrmin = 15000;
130
131 pm->ddr_spd_info[ch].twtr_smin = 2500;
132 pm->ddr_spd_info[ch].twtr_lmin = 7500;
133
134 return 0;
135 }
136
get_default_mcu_info(u8 * data)137 void get_default_mcu_info(u8 *data)
138 {
139 get_mcu_up_info_default((struct mcu_config *)data);
140 }
141
fix_mcu_info(u8 * data)142 void fix_mcu_info(u8 *data)
143 {
144 struct mcu_config *mcu_info = (struct mcu_config *)data;
145
146 for (int ch = 0; ch < 2; ch++)
147 init_dimm_param(ch, mcu_info);
148 }
149
ddr_init(void)150 void ddr_init(void)
151 {
152 u8 buffer[0x100];
153 struct arm_smccc_res res;
154
155 get_default_mcu_info(buffer);
156 fix_mcu_info(buffer);
157
158 arm_smccc_smc(CPU_INIT_MEM, 0, (u64)buffer, 0, 0, 0, 0, 0, &res);
159 if (res.a0 != 0)
160 panic("DRAM init failed :0x%lx\n", res.a0);
161 }
162