1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
From 3110c4392d40175716f167be5ef8234f2b4cd030 Mon Sep 17 00:00:00 2001
From: Leah Rowe <info@minifree.org>
Date: Tue, 6 Aug 2024 00:50:24 +0100
Subject: [PATCH 41/65] nb/gm45: Fix Angel's DDR2 RCOMP fix on DDR3 boards
We add this patch:
commit commit_id_here
Author: Angel Pons <th3fanbus@gmail.com>
Date: Mon May 10 22:40:59 2021 +0200
nb/intel/gm45: Make DDR2 raminit work
This patch was original applied, in lbmk, only on coreboot/dell,
separately from coreboot/default, which was wasteful because it
meant having an entire coreboot tree just for a single board. We
did this, because the DDR2 RCOMP fix happened to break DDR3 init
on other boards.
What *this* new patch does on top of Angel's patch, is make sure
that their changes only apply to DDR2, while DDR3 behaviour remains
unchanged. This means that the Dell Latitude E6400 can be supported
in the main coreboot tree, within lbmk.
Essentially, this patch restores the old behaviour, prior to applying
Angel's patch, only when DDR3 memory is used.
Signed-off-by: Leah Rowe <info@minifree.org>
---
src/northbridge/intel/gm45/raminit.c | 161 +++++++++---------
.../intel/gm45/raminit_rcomp_calibration.c | 9 +-
2 files changed, 88 insertions(+), 82 deletions(-)
diff --git a/src/northbridge/intel/gm45/raminit.c b/src/northbridge/intel/gm45/raminit.c
index df8f46fbbc..433db3a68c 100644
--- a/src/northbridge/intel/gm45/raminit.c
+++ b/src/northbridge/intel/gm45/raminit.c
@@ -1117,7 +1117,10 @@ static void dram_program_timings(const int spd_type, const timings_t *const timi
reg = (reg & ~(0xf << 10)) | (2 << 10);
else
reg = (reg & ~(0xf << 10)) | (3 << 10);
- reg = (reg & ~(0x7 << 5)) | (2 << 5);
+ if (spd_type == DDR2)
+ reg = (reg & ~(0x7 << 5)) | (2 << 5);
+ else
+ reg = (reg & ~(0x7 << 5)) | (3 << 5);
} else if (timings->mem_clock != MEM_CLOCK_1067MT) {
reg = (reg & ~(0x7 << 15)) | ((9 - timings->CAS) << 15);
reg = (reg & ~(0xf << 10)) | ((timings->CAS - 3) << 10);
@@ -2209,83 +2212,85 @@ void raminit(sysinfo_t *const sysinfo, const int s3resume)
raminit_write_training(timings->mem_clock, dimms, s3resume);
}
- /*
- * Program hardcoded DDR2-800 RCOMP SRAM codes. This must be done
- * after receiver enable calibration, otherwise raminit sometimes
- * completes with non-working memory.
- */
- mchbar_write32(0x0530, 0x06060005);
- mchbar_write32(0x0680, 0x06060606);
- mchbar_write32(0x0684, 0x08070606);
- mchbar_write32(0x0688, 0x0e0e0c0a);
- mchbar_write32(0x068c, 0x0e0e0e0e);
- mchbar_write32(0x0698, 0x06060606);
- mchbar_write32(0x069c, 0x08070606);
- mchbar_write32(0x06a0, 0x0c0c0b0a);
- mchbar_write32(0x06a4, 0x0c0c0c0c);
-
- mchbar_write32(0x06c0, 0x02020202);
- mchbar_write32(0x06c4, 0x03020202);
- mchbar_write32(0x06c8, 0x04040403);
- mchbar_write32(0x06cc, 0x04040404);
- mchbar_write32(0x06d8, 0x02020202);
- mchbar_write32(0x06dc, 0x03020202);
- mchbar_write32(0x06e0, 0x04040403);
- mchbar_write32(0x06e4, 0x04040404);
-
- mchbar_write32(0x0700, 0x02020202);
- mchbar_write32(0x0704, 0x03020202);
- mchbar_write32(0x0708, 0x04040403);
- mchbar_write32(0x070c, 0x04040404);
- mchbar_write32(0x0718, 0x02020202);
- mchbar_write32(0x071c, 0x03020202);
- mchbar_write32(0x0720, 0x04040403);
- mchbar_write32(0x0724, 0x04040404);
-
- mchbar_write32(0x0740, 0x02020202);
- mchbar_write32(0x0744, 0x03020202);
- mchbar_write32(0x0748, 0x04040403);
- mchbar_write32(0x074c, 0x04040404);
- mchbar_write32(0x0758, 0x02020202);
- mchbar_write32(0x075c, 0x03020202);
- mchbar_write32(0x0760, 0x04040403);
- mchbar_write32(0x0764, 0x04040404);
-
- mchbar_write32(0x0780, 0x06060606);
- mchbar_write32(0x0784, 0x09070606);
- mchbar_write32(0x0788, 0x0e0e0c0b);
- mchbar_write32(0x078c, 0x0e0e0e0e);
- mchbar_write32(0x0798, 0x06060606);
- mchbar_write32(0x079c, 0x09070606);
- mchbar_write32(0x07a0, 0x0d0d0c0b);
- mchbar_write32(0x07a4, 0x0d0d0d0d);
-
- mchbar_write32(0x07c0, 0x06060606);
- mchbar_write32(0x07c4, 0x09070606);
- mchbar_write32(0x07c8, 0x0e0e0c0b);
- mchbar_write32(0x07cc, 0x0e0e0e0e);
- mchbar_write32(0x07d8, 0x06060606);
- mchbar_write32(0x07dc, 0x09070606);
- mchbar_write32(0x07e0, 0x0d0d0c0b);
- mchbar_write32(0x07e4, 0x0d0d0d0d);
-
- mchbar_write32(0x0840, 0x06060606);
- mchbar_write32(0x0844, 0x08070606);
- mchbar_write32(0x0848, 0x0e0e0c0a);
- mchbar_write32(0x084c, 0x0e0e0e0e);
- mchbar_write32(0x0858, 0x06060606);
- mchbar_write32(0x085c, 0x08070606);
- mchbar_write32(0x0860, 0x0c0c0b0a);
- mchbar_write32(0x0864, 0x0c0c0c0c);
-
- mchbar_write32(0x0880, 0x02020202);
- mchbar_write32(0x0884, 0x03020202);
- mchbar_write32(0x0888, 0x04040403);
- mchbar_write32(0x088c, 0x04040404);
- mchbar_write32(0x0898, 0x02020202);
- mchbar_write32(0x089c, 0x03020202);
- mchbar_write32(0x08a0, 0x04040403);
- mchbar_write32(0x08a4, 0x04040404);
+ if (sysinfo->spd_type == DDR2) {
+ /*
+ * Program hardcoded DDR2-800 RCOMP SRAM codes. This must be done
+ * after receiver enable calibration, otherwise raminit sometimes
+ * completes with non-working memory.
+ */
+ mchbar_write32(0x0530, 0x06060005);
+ mchbar_write32(0x0680, 0x06060606);
+ mchbar_write32(0x0684, 0x08070606);
+ mchbar_write32(0x0688, 0x0e0e0c0a);
+ mchbar_write32(0x068c, 0x0e0e0e0e);
+ mchbar_write32(0x0698, 0x06060606);
+ mchbar_write32(0x069c, 0x08070606);
+ mchbar_write32(0x06a0, 0x0c0c0b0a);
+ mchbar_write32(0x06a4, 0x0c0c0c0c);
+
+ mchbar_write32(0x06c0, 0x02020202);
+ mchbar_write32(0x06c4, 0x03020202);
+ mchbar_write32(0x06c8, 0x04040403);
+ mchbar_write32(0x06cc, 0x04040404);
+ mchbar_write32(0x06d8, 0x02020202);
+ mchbar_write32(0x06dc, 0x03020202);
+ mchbar_write32(0x06e0, 0x04040403);
+ mchbar_write32(0x06e4, 0x04040404);
+
+ mchbar_write32(0x0700, 0x02020202);
+ mchbar_write32(0x0704, 0x03020202);
+ mchbar_write32(0x0708, 0x04040403);
+ mchbar_write32(0x070c, 0x04040404);
+ mchbar_write32(0x0718, 0x02020202);
+ mchbar_write32(0x071c, 0x03020202);
+ mchbar_write32(0x0720, 0x04040403);
+ mchbar_write32(0x0724, 0x04040404);
+
+ mchbar_write32(0x0740, 0x02020202);
+ mchbar_write32(0x0744, 0x03020202);
+ mchbar_write32(0x0748, 0x04040403);
+ mchbar_write32(0x074c, 0x04040404);
+ mchbar_write32(0x0758, 0x02020202);
+ mchbar_write32(0x075c, 0x03020202);
+ mchbar_write32(0x0760, 0x04040403);
+ mchbar_write32(0x0764, 0x04040404);
+
+ mchbar_write32(0x0780, 0x06060606);
+ mchbar_write32(0x0784, 0x09070606);
+ mchbar_write32(0x0788, 0x0e0e0c0b);
+ mchbar_write32(0x078c, 0x0e0e0e0e);
+ mchbar_write32(0x0798, 0x06060606);
+ mchbar_write32(0x079c, 0x09070606);
+ mchbar_write32(0x07a0, 0x0d0d0c0b);
+ mchbar_write32(0x07a4, 0x0d0d0d0d);
+
+ mchbar_write32(0x07c0, 0x06060606);
+ mchbar_write32(0x07c4, 0x09070606);
+ mchbar_write32(0x07c8, 0x0e0e0c0b);
+ mchbar_write32(0x07cc, 0x0e0e0e0e);
+ mchbar_write32(0x07d8, 0x06060606);
+ mchbar_write32(0x07dc, 0x09070606);
+ mchbar_write32(0x07e0, 0x0d0d0c0b);
+ mchbar_write32(0x07e4, 0x0d0d0d0d);
+
+ mchbar_write32(0x0840, 0x06060606);
+ mchbar_write32(0x0844, 0x08070606);
+ mchbar_write32(0x0848, 0x0e0e0c0a);
+ mchbar_write32(0x084c, 0x0e0e0e0e);
+ mchbar_write32(0x0858, 0x06060606);
+ mchbar_write32(0x085c, 0x08070606);
+ mchbar_write32(0x0860, 0x0c0c0b0a);
+ mchbar_write32(0x0864, 0x0c0c0c0c);
+
+ mchbar_write32(0x0880, 0x02020202);
+ mchbar_write32(0x0884, 0x03020202);
+ mchbar_write32(0x0888, 0x04040403);
+ mchbar_write32(0x088c, 0x04040404);
+ mchbar_write32(0x0898, 0x02020202);
+ mchbar_write32(0x089c, 0x03020202);
+ mchbar_write32(0x08a0, 0x04040403);
+ mchbar_write32(0x08a4, 0x04040404);
+ }
igd_compute_ggc(sysinfo);
diff --git a/src/northbridge/intel/gm45/raminit_rcomp_calibration.c b/src/northbridge/intel/gm45/raminit_rcomp_calibration.c
index b74765fd9c..5d4505e063 100644
--- a/src/northbridge/intel/gm45/raminit_rcomp_calibration.c
+++ b/src/northbridge/intel/gm45/raminit_rcomp_calibration.c
@@ -198,7 +198,7 @@ void raminit_rcomp_calibration(int ddr_type, const stepping_t stepping) {
reg = mchbar_read32(0x518);
lut_idx[channel][group][PULL_UP] = (reg >> 24) & 0x7f;
lut_idx[channel][group][PULL_DOWN] = (reg >> 16) & 0x7f;
- if (i == 1) {
+ if ((i == 1) && (ddr_type == DDR2)) {
magic_comp[0] = (reg >> 8) & 0x3f;
magic_comp[1] = (reg >> 0) & 0x3f;
}
@@ -242,7 +242,8 @@ void raminit_rcomp_calibration(int ddr_type, const stepping_t stepping) {
}
mchbar += 0x0040;
}
-
- mchbar_clrsetbits32(0x4d0, 0x3f << 26, magic_comp[0] << 26);
- mchbar_clrsetbits32(0x4d0, 0x3f << 20, magic_comp[1] << 20);
+ if (ddr_type == DDR2) {
+ mchbar_clrsetbits32(0x4d0, 0x3f << 26, magic_comp[0] << 26);
+ mchbar_clrsetbits32(0x4d0, 0x3f << 20, magic_comp[1] << 20);
+ }
}
--
2.39.5
|
