Angel Pons | 4b42983 | 2020-04-02 23:48:50 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 2 | |
| 3 | #include <stdint.h> |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 4 | #include <device/pci_def.h> |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 5 | #include <cpu/x86/msr.h> |
Elyes HAOUAS | f33e835 | 2018-10-24 16:24:44 +0200 | [diff] [blame] | 6 | #include <cpu/intel/speedstep.h> |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 7 | |
| 8 | #include "gm45.h" |
| 9 | |
| 10 | static int sku_freq_index(const gmch_gfx_t sku, const int low_power_mode) |
| 11 | { |
| 12 | if (low_power_mode) |
| 13 | return 1; |
| 14 | switch (sku) { |
| 15 | case GMCH_GM45: |
| 16 | case GMCH_GE45: |
| 17 | case GMCH_GS45: |
| 18 | return 0; |
| 19 | case GMCH_GM47: |
| 20 | return 2; |
| 21 | case GMCH_GM49: |
| 22 | return 3; |
| 23 | default: |
| 24 | return 0; |
| 25 | } |
| 26 | } |
| 27 | static void init_freq_scaling(const gmch_gfx_t sku, const int low_power_mode) |
| 28 | { |
| 29 | int i; |
| 30 | |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 31 | mchbar_clrsetbits32(0x11cc, 0x1f, 0x17); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 32 | switch (sku) { |
| 33 | case GMCH_GM45: |
| 34 | case GMCH_GE45: |
| 35 | case GMCH_GS45: |
| 36 | case GMCH_GM47: |
| 37 | case GMCH_GM49: |
| 38 | break; |
| 39 | default: |
| 40 | /* No more to be done for the others. */ |
| 41 | return; |
| 42 | } |
| 43 | |
| 44 | static const u32 voltage_mask = |
| 45 | (0x1f << 24) | (0x1f << 16) | (0x1f << 8) | 0x1f; |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 46 | mchbar_clrsetbits32(0x1120, voltage_mask, 0x10111213); |
| 47 | mchbar_clrsetbits32(0x1124, voltage_mask, 0x14151617); |
| 48 | mchbar_clrsetbits32(0x1128, voltage_mask, 0x18191a1b); |
| 49 | mchbar_clrsetbits32(0x112c, voltage_mask, 0x1c1d1e1f); |
| 50 | mchbar_clrsetbits32(0x1130, voltage_mask, 0x00010203); |
| 51 | mchbar_clrsetbits32(0x1134, voltage_mask, 0x04050607); |
| 52 | mchbar_clrsetbits32(0x1138, voltage_mask, 0x08090a0b); |
| 53 | mchbar_clrsetbits32(0x113c, voltage_mask, 0x0c0d0e0f); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 54 | |
| 55 | /* Program frequencies. */ |
| 56 | static const u32 frequencies_from_sku_vco[][4][8] = { |
| 57 | /* GM45/GE45/GS45_perf */ { |
| 58 | /* VCO 2666 */ { 0xcd, 0xbc, 0x9b, 0x8a, 0x79, 0x78, 0x67, 0x56 }, |
| 59 | /* VCO 3200 */ { 0xcd, 0xac, 0x9b, 0x8a, 0x89, 0x78, 0x67, 0x56 }, |
| 60 | /* VCO 4000 */ { 0xac, 0x9b, 0x9a, 0x89, 0x89, 0x68, 0x56, 0x45 }, |
| 61 | /* VCO 5333 */ { 0xab, 0x9a, 0x79, 0x68, 0x57, 0x56, 0x45, 0x34 }, |
| 62 | }, |
| 63 | /* GS45_low_power */ { |
| 64 | /* VCO 2666 */ { 0xcd, 0x8a }, |
| 65 | /* VCO 3200 */ { 0xcd, 0x89 }, |
| 66 | /* VCO 4000 */ { 0xac, 0x89 }, |
| 67 | /* VCO 5333 */ { 0xab, 0x68 }, |
| 68 | }, |
| 69 | /* GM47 */ { |
| 70 | /* VCO 2666 */ { 0xcd, 0xcd, 0xbc, 0x9b, 0x79, 0x78, 0x67, 0x56 }, |
| 71 | /* VCO 3200 */ { 0xde, 0xcd, 0xac, 0x9b, 0x89, 0x78, 0x67, 0x56 }, |
| 72 | /* VCO 4000 */ { 0xcd, 0xac, 0x9b, 0x9a, 0x89, 0x68, 0x56, 0x45 }, |
| 73 | /* VCO 5333 */ { 0xac, 0xab, 0x9a, 0x79, 0x68, 0x56, 0x45, 0x34 }, |
| 74 | }, |
| 75 | /* GM49 */ { |
| 76 | /* VCO 2666 */ { }, |
| 77 | /* VCO 3200 */ { 0xef, 0xde, 0xcd, 0xac, 0x89, 0x78, 0x67, 0x56 }, |
| 78 | /* VCO 4000 */ { 0xef, 0xde, 0xac, 0x9b, 0x89, 0x68, 0x56, 0x45 }, |
| 79 | /* VCO 5333 */ { 0xce, 0xbd, 0xab, 0x9a, 0x68, 0x57, 0x45, 0x34 }, |
| 80 | }}; |
| 81 | const int sku_index = sku_freq_index(sku, low_power_mode); |
| 82 | const int vco_index = raminit_read_vco_index(); |
| 83 | const int reg_limit = low_power_mode ? 1 : 4; |
| 84 | if (sku == GMCH_GM49) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 85 | mchbar_write8(0x1110 + 3, 0x1b); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 86 | else |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 87 | mchbar_write8(0x1110 + 3, 0x17); |
| 88 | mchbar_write8(0x1110 + 1, 0x17); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 89 | if (!low_power_mode) { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 90 | mchbar_write8(0x1114 + 3, 0x17); |
| 91 | mchbar_write8(0x1114 + 1, 0x17); |
| 92 | mchbar_write8(0x1118 + 3, 0x17); |
| 93 | mchbar_write8(0x1118 + 1, 0x17); |
| 94 | mchbar_write8(0x111c + 3, 0x17); |
| 95 | mchbar_write8(0x111c + 1, 0x17); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 96 | } |
| 97 | for (i = 0; i < reg_limit; ++i) { |
| 98 | const int mchbar = 0x1110 + (i * 4); |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 99 | mchbar_write8(mchbar + 2, frequencies_from_sku_vco |
| 100 | [sku_index][vco_index][i * 2 + 0]); |
| 101 | mchbar_write8(mchbar + 0, frequencies_from_sku_vco |
| 102 | [sku_index][vco_index][i * 2 + 1]); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 103 | } |
| 104 | |
| 105 | if (low_power_mode) { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 106 | mchbar_clrsetbits16(0x1190, 7 << 8 | 7 << 4 | 7, 1 << 8 | 1 << 4 | 1); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 107 | } else { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 108 | mchbar_clrsetbits16(0x1190, 7 << 8 | 7 << 4, 7); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 109 | if (sku == GMCH_GS45) /* performance mode */ |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 110 | mchbar_clrbits32(0x0ffc, 1 << 31); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 111 | } |
| 112 | |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 113 | mchbar_setbits16(0x0fc0, 1 << 11); |
| 114 | mchbar_write16(0x11b8, 0x333c); |
| 115 | mchbar_write16(0x11c0 + 2, 0x0303); |
| 116 | mchbar_write32(0x11c4, 0x0a030a03); |
| 117 | mchbar_clrsetbits16(0x1100, 0x1f << 8, 3 << 8); |
| 118 | mchbar_write16(0x11b8 + 2, 0x4000); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 119 | } |
| 120 | |
Vladimir Serbinenko | 020dc0e | 2014-08-12 22:50:40 +0200 | [diff] [blame] | 121 | void init_pm(const sysinfo_t *const sysinfo, int do_freq_scaling_cfg) |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 122 | { |
| 123 | const stepping_t stepping = sysinfo->stepping; |
| 124 | const fsb_clock_t fsb = sysinfo->selected_timings.fsb_clock; |
| 125 | const mem_clock_t memclk = sysinfo->selected_timings.mem_clock; |
| 126 | |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 127 | mchbar_write16(0xc14, 0); |
| 128 | mchbar_write16(0xc20, 0); |
| 129 | mchbar_write32(0xfc0, 0x001f00fd); |
| 130 | mchbar_setbits32(0xfc0, 3 << 25); |
| 131 | mchbar_setbits32(0xfc0, 1 << 11); |
| 132 | mchbar_write8(0xfb0, 3); |
| 133 | mchbar_setbits8(0xf10, 1 << 1); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 134 | if (fsb == FSB_CLOCK_667MHz) { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 135 | mchbar_write16(0xc3a, 0x0ea6); |
| 136 | mchbar_clrsetbits8(0xc16, 0x7f, 0x0e); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 137 | } else if (fsb == FSB_CLOCK_800MHz) { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 138 | mchbar_write16(0xc3a, 0x1194); |
| 139 | mchbar_clrsetbits8(0xc16, 0x7f, 0x10); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 140 | } else if (fsb == FSB_CLOCK_1067MHz) { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 141 | mchbar_write16(0xc3a, 0x1777); |
| 142 | mchbar_clrsetbits8(0xc16, 0x7f, 0x15); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 143 | } |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 144 | mchbar_write8(0xfb8, 3); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 145 | if (fsb == FSB_CLOCK_667MHz) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 146 | mchbar_write16(0xc38, 0x0ea6); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 147 | else if (fsb == FSB_CLOCK_800MHz) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 148 | mchbar_write16(0xc38, 0x1194); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 149 | else if (fsb == FSB_CLOCK_1067MHz) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 150 | mchbar_write16(0xc38, 0x1777); |
| 151 | mchbar_setbits8(0xf10, 1 << 5); |
| 152 | mchbar_setbits16(0xc16, 3 << 12); |
| 153 | mchbar_write32(0xf60, 0x01030419); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 154 | if (fsb == FSB_CLOCK_667MHz) { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 155 | mchbar_write32(0xf00, 0x00000600); |
| 156 | mchbar_write32(0xf04, 0x00001d80); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 157 | } else if (fsb == FSB_CLOCK_800MHz) { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 158 | mchbar_write32(0xf00, 0x00000700); |
| 159 | mchbar_write32(0xf04, 0x00002380); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 160 | } else if (fsb == FSB_CLOCK_1067MHz) { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 161 | mchbar_write32(0xf00, 0x00000900); |
| 162 | mchbar_write32(0xf04, 0x00002e80); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 163 | } |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 164 | mchbar_write16(0xf08, 0x730f); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 165 | if (fsb == FSB_CLOCK_667MHz) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 166 | mchbar_write16(0xf0c, 0x0b96); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 167 | else if (fsb == FSB_CLOCK_800MHz) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 168 | mchbar_write16(0xf0c, 0x0c99); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 169 | else if (fsb == FSB_CLOCK_1067MHz) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 170 | mchbar_write16(0xf0c, 0x10a4); |
| 171 | mchbar_setbits32(0xf80, 1 << 31); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 172 | |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 173 | mchbar_write32(0x40, (mchbar_read32(0x40) & ~(0x3f << 24)) | |
Arthur Heymans | cdad992 | 2022-02-16 07:00:29 +0100 | [diff] [blame] | 174 | ((sysinfo->cores == 4) ? (1 << 24) : 0)); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 175 | |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 176 | mchbar_clrbits32(0x40, 1 << 19); |
| 177 | mchbar_setbits32(0x40, 1 << 13); |
| 178 | mchbar_setbits32(0x40, 1 << 21); |
| 179 | mchbar_setbits32(0x40, 1 << 9); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 180 | if (stepping > STEPPING_B1) { |
| 181 | if (fsb != FSB_CLOCK_1067MHz) { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 182 | mchbar_setbits32(0x70, 1 << 30); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 183 | } else { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 184 | mchbar_clrbits32(0x70, 1 << 30); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 185 | } |
| 186 | } |
| 187 | if (stepping < STEPPING_B1) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 188 | mchbar_setbits32(0x70, 1 << 29); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 189 | else |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 190 | mchbar_clrbits32(0x70, 1 << 29); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 191 | if (stepping > STEPPING_B1) { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 192 | mchbar_setbits32(0x70, 1 << 28); |
| 193 | mchbar_setbits32(0x70, 1 << 25); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 194 | } |
| 195 | if (stepping > STEPPING_B0) { |
| 196 | if (fsb != FSB_CLOCK_667MHz) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 197 | mchbar_clrsetbits32(0x70, 3 << 21, 1 << 21); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 198 | else |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 199 | mchbar_clrbits32(0x70, 3 << 21); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 200 | } |
| 201 | if (stepping > STEPPING_B2) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 202 | mchbar_setbits32(0x44, 1 << 30); |
| 203 | mchbar_setbits32(0x44, 1 << 31); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 204 | if (sysinfo->cores == 2) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 205 | mchbar_setbits32(0x44, 1 << 26); |
| 206 | mchbar_setbits32(0x44, 1 << 21); |
| 207 | mchbar_clrsetbits32(0x44, 3 << 24, 2 << 24); |
| 208 | mchbar_setbits32(0x44, 1 << 5); |
| 209 | mchbar_setbits32(0x44, 1 << 4); |
| 210 | mchbar_clrsetbits32(0x90, 7, 4); |
| 211 | mchbar_setbits32(0x94, 1 << 29); |
| 212 | mchbar_setbits32(0x94, 1 << 11); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 213 | if (stepping < STEPPING_B0) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 214 | mchbar_clrsetbits32(0x94, 3 << 19, 2 << 19); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 215 | if (stepping > STEPPING_B2) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 216 | mchbar_setbits32(0x94, 1 << 21); |
| 217 | mchbar_clrbits8(0xb00, 1 << 0); |
| 218 | mchbar_setbits8(0xb00, 1 << 7); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 219 | if (fsb != FSB_CLOCK_1067MHz) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 220 | mchbar_setbits8(0x75, 1 << 6); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 221 | else |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 222 | mchbar_clrbits8(0x75, ~(1 << 1)); |
| 223 | mchbar_setbits8(0x77, 3); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 224 | if (stepping >= STEPPING_B1) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 225 | mchbar_setbits8(0x77, 1 << 2); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 226 | if (stepping > STEPPING_B2) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 227 | mchbar_setbits8(0x77, 1 << 4); |
| 228 | if (mchbar_read16(0x90) & (1 << 8)) |
| 229 | mchbar_clrbits8(0x90, 7 << 4); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 230 | if (stepping >= STEPPING_B0) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 231 | mchbar_setbits8(0xd0, 1 << 1); |
| 232 | mchbar_setbits8(0xbd8, 3 << 2); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 233 | if (stepping >= STEPPING_B3) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 234 | mchbar_setbits32(0x70, 1 << 0); |
| 235 | mchbar_setbits32(0x70, 1 << 3); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 236 | if (stepping >= STEPPING_B0) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 237 | mchbar_clrbits32(0x70, 1 << 16); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 238 | else |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 239 | mchbar_setbits32(0x70, 1 << 16); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 240 | if (stepping >= STEPPING_B3) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 241 | mchbar_setbits8(0xc14, 1 << 1); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 242 | if (stepping >= STEPPING_B1) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 243 | mchbar_clrsetbits16(0xffc, 0x7ff, 0x7c0); |
| 244 | mchbar_clrsetbits16(0x48, 0xff << 2, 0xaa << 2); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 245 | if (stepping == STEPPING_CONVERSION_A1) { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 246 | mchbar_setbits16(0x40, 1 << 12); |
| 247 | mchbar_setbits32(0x94, 3 << 22); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 248 | } |
| 249 | |
Elyes HAOUAS | f33e835 | 2018-10-24 16:24:44 +0200 | [diff] [blame] | 250 | const int cpu_supports_super_lfm = |
| 251 | rdmsr(MSR_EXTENDED_CONFIG).lo & (1 << 27); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 252 | if ((stepping >= STEPPING_B0) && cpu_supports_super_lfm) { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 253 | mchbar_clrbits16(CLKCFG_MCHBAR, 1 << 7); |
| 254 | mchbar_setbits16(CLKCFG_MCHBAR, 1 << 14); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 255 | } else { |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 256 | mchbar_clrbits16(CLKCFG_MCHBAR, 1 << 14); |
| 257 | mchbar_setbits16(CLKCFG_MCHBAR, 1 << 7); |
| 258 | mchbar_clrbits32(0x44, 1 << 31); /* Was set above. */ |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 259 | } |
| 260 | |
Vladimir Serbinenko | 020dc0e | 2014-08-12 22:50:40 +0200 | [diff] [blame] | 261 | if ((sysinfo->gfx_type != GMCH_PM45) && do_freq_scaling_cfg && |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 262 | (sysinfo->gfx_type != GMCH_UNKNOWN)) |
| 263 | init_freq_scaling(sysinfo->gfx_type, |
| 264 | sysinfo->gs45_low_power_mode); |
| 265 | |
| 266 | /* This has to be the last write to CLKCFG. */ |
| 267 | if ((fsb == FSB_CLOCK_1067MHz) && (memclk == MEM_CLOCK_667MT)) |
Angel Pons | 3f1f8ef | 2021-03-27 13:52:43 +0100 | [diff] [blame] | 268 | mchbar_clrbits32(CLKCFG_MCHBAR, 1 << 17); |
Patrick Georgi | 2efc880 | 2012-11-06 11:03:53 +0100 | [diff] [blame] | 269 | } |