| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* This file is part of the coreboot project. */ |
| |
| #include <stdint.h> |
| #include <stddef.h> |
| #include <device/pci_def.h> |
| #include <cpu/x86/msr.h> |
| #include <cpu/intel/speedstep.h> |
| |
| #include "gm45.h" |
| |
| static int sku_freq_index(const gmch_gfx_t sku, const int low_power_mode) |
| { |
| if (low_power_mode) |
| return 1; |
| switch (sku) { |
| case GMCH_GM45: |
| case GMCH_GE45: |
| case GMCH_GS45: |
| return 0; |
| case GMCH_GM47: |
| return 2; |
| case GMCH_GM49: |
| return 3; |
| default: |
| return 0; |
| } |
| } |
| static void init_freq_scaling(const gmch_gfx_t sku, const int low_power_mode) |
| { |
| int i; |
| |
| MCHBAR32(0x11cc) = (MCHBAR32(0x11cc) & ~(0x1f)) | 0x17; |
| switch (sku) { |
| case GMCH_GM45: |
| case GMCH_GE45: |
| case GMCH_GS45: |
| case GMCH_GM47: |
| case GMCH_GM49: |
| break; |
| default: |
| /* No more to be done for the others. */ |
| return; |
| } |
| |
| static const u32 voltage_mask = |
| (0x1f << 24) | (0x1f << 16) | (0x1f << 8) | 0x1f; |
| MCHBAR32(0x1120) = (MCHBAR32(0x1120) & ~voltage_mask) | 0x10111213; |
| MCHBAR32(0x1124) = (MCHBAR32(0x1124) & ~voltage_mask) | 0x14151617; |
| MCHBAR32(0x1128) = (MCHBAR32(0x1128) & ~voltage_mask) | 0x18191a1b; |
| MCHBAR32(0x112c) = (MCHBAR32(0x112c) & ~voltage_mask) | 0x1c1d1e1f; |
| MCHBAR32(0x1130) = (MCHBAR32(0x1130) & ~voltage_mask) | 0x00010203; |
| MCHBAR32(0x1134) = (MCHBAR32(0x1134) & ~voltage_mask) | 0x04050607; |
| MCHBAR32(0x1138) = (MCHBAR32(0x1138) & ~voltage_mask) | 0x08090a0b; |
| MCHBAR32(0x113c) = (MCHBAR32(0x113c) & ~voltage_mask) | 0x0c0d0e0f; |
| |
| /* Program frequencies. */ |
| static const u32 frequencies_from_sku_vco[][4][8] = { |
| /* GM45/GE45/GS45_perf */ { |
| /* VCO 2666 */ { 0xcd, 0xbc, 0x9b, 0x8a, 0x79, 0x78, 0x67, 0x56 }, |
| /* VCO 3200 */ { 0xcd, 0xac, 0x9b, 0x8a, 0x89, 0x78, 0x67, 0x56 }, |
| /* VCO 4000 */ { 0xac, 0x9b, 0x9a, 0x89, 0x89, 0x68, 0x56, 0x45 }, |
| /* VCO 5333 */ { 0xab, 0x9a, 0x79, 0x68, 0x57, 0x56, 0x45, 0x34 }, |
| }, |
| /* GS45_low_power */ { |
| /* VCO 2666 */ { 0xcd, 0x8a }, |
| /* VCO 3200 */ { 0xcd, 0x89 }, |
| /* VCO 4000 */ { 0xac, 0x89 }, |
| /* VCO 5333 */ { 0xab, 0x68 }, |
| }, |
| /* GM47 */ { |
| /* VCO 2666 */ { 0xcd, 0xcd, 0xbc, 0x9b, 0x79, 0x78, 0x67, 0x56 }, |
| /* VCO 3200 */ { 0xde, 0xcd, 0xac, 0x9b, 0x89, 0x78, 0x67, 0x56 }, |
| /* VCO 4000 */ { 0xcd, 0xac, 0x9b, 0x9a, 0x89, 0x68, 0x56, 0x45 }, |
| /* VCO 5333 */ { 0xac, 0xab, 0x9a, 0x79, 0x68, 0x56, 0x45, 0x34 }, |
| }, |
| /* GM49 */ { |
| /* VCO 2666 */ { }, |
| /* VCO 3200 */ { 0xef, 0xde, 0xcd, 0xac, 0x89, 0x78, 0x67, 0x56 }, |
| /* VCO 4000 */ { 0xef, 0xde, 0xac, 0x9b, 0x89, 0x68, 0x56, 0x45 }, |
| /* VCO 5333 */ { 0xce, 0xbd, 0xab, 0x9a, 0x68, 0x57, 0x45, 0x34 }, |
| }}; |
| const int sku_index = sku_freq_index(sku, low_power_mode); |
| const int vco_index = raminit_read_vco_index(); |
| const int reg_limit = low_power_mode ? 1 : 4; |
| if (sku == GMCH_GM49) |
| MCHBAR8(0x1110+3) = 0x1b; |
| else |
| MCHBAR8(0x1110+3) = 0x17; |
| MCHBAR8(0x1110+1) = 0x17; |
| if (!low_power_mode) { |
| MCHBAR8(0x1114+3) = 0x17; |
| MCHBAR8(0x1114+1) = 0x17; |
| MCHBAR8(0x1118+3) = 0x17; |
| MCHBAR8(0x1118+1) = 0x17; |
| MCHBAR8(0x111c+3) = 0x17; |
| MCHBAR8(0x111c+1) = 0x17; |
| } |
| for (i = 0; i < reg_limit; ++i) { |
| const int mchbar = 0x1110 + (i * 4); |
| MCHBAR8(mchbar + 2) = frequencies_from_sku_vco |
| [sku_index][vco_index][i * 2 + 0]; |
| MCHBAR8(mchbar + 0) = frequencies_from_sku_vco |
| [sku_index][vco_index][i * 2 + 1]; |
| } |
| |
| if (low_power_mode) { |
| MCHBAR16(0x1190) = |
| (MCHBAR16(0x1190) & ~((7 << 8) | (7 << 4) | 7)) | |
| (1 << 8) | (1 << 4) | 1; |
| } else { |
| MCHBAR16(0x1190) = |
| (MCHBAR16(0x1190) & ~((7 << 8) | (7 << 4))) | 7; |
| if (sku == GMCH_GS45) /* performance mode */ |
| MCHBAR32(0x0ffc) &= ~(1 << 31); |
| } |
| |
| MCHBAR16(0x0fc0) |= (1 << 11); |
| MCHBAR16(0x11b8) = 0x333c; |
| MCHBAR16(0x11c0 + 2) = 0x0303; |
| MCHBAR32(0x11c4) = 0x0a030a03; |
| MCHBAR16(0x1100) = (MCHBAR16(0x1100) & ~(0x1f << 8)) | (3 << 8); |
| MCHBAR16(0x11b8 + 2) = 0x4000; |
| } |
| |
| void init_pm(const sysinfo_t *const sysinfo, int do_freq_scaling_cfg) |
| { |
| const stepping_t stepping = sysinfo->stepping; |
| const fsb_clock_t fsb = sysinfo->selected_timings.fsb_clock; |
| const mem_clock_t memclk = sysinfo->selected_timings.mem_clock; |
| |
| MCHBAR16(0xc14) = 0; |
| MCHBAR16(0xc20) = 0; |
| MCHBAR32(0xfc0) = 0x001f00fd; |
| MCHBAR32(0xfc0) |= 3 << 25; |
| MCHBAR32(0xfc0) |= 1 << 11; |
| MCHBAR8(0xfb0) = 3; |
| MCHBAR8(0xf10) |= 1 << 1; |
| if (fsb == FSB_CLOCK_667MHz) { |
| MCHBAR16(0xc3a) = 0xea6; |
| MCHBAR8(0xc16) = (MCHBAR8(0xc16) & 0x80) | 0x0e; |
| } else if (fsb == FSB_CLOCK_800MHz) { |
| MCHBAR16(0xc3a) = 0x1194; |
| MCHBAR8(0xc16) = (MCHBAR8(0xc16) & 0x80) | 0x10; |
| } else if (fsb == FSB_CLOCK_1067MHz) { |
| MCHBAR16(0xc3a) = 0x1777; |
| MCHBAR8(0xc16) = (MCHBAR8(0xc16) & 0x80) | 0x15; |
| } |
| MCHBAR8(0xfb8) = 3; |
| if (fsb == FSB_CLOCK_667MHz) |
| MCHBAR16(0xc38) = 0x0ea6; |
| else if (fsb == FSB_CLOCK_800MHz) |
| MCHBAR16(0xc38) = 0x1194; |
| else if (fsb == FSB_CLOCK_1067MHz) |
| MCHBAR16(0xc38) = 0x1777; |
| MCHBAR8(0xf10) |= 1 << 5; |
| MCHBAR16(0xc16) |= 3 << 12; |
| MCHBAR32(0xf60) = 0x01030419; |
| if (fsb == FSB_CLOCK_667MHz) { |
| MCHBAR32(0xf00) = 0x00000600; |
| MCHBAR32(0xf04) = 0x00001d80; |
| } else if (fsb == FSB_CLOCK_800MHz) { |
| MCHBAR32(0xf00) = 0x00000700; |
| MCHBAR32(0xf04) = 0x00002380; |
| } else if (fsb == FSB_CLOCK_1067MHz) { |
| MCHBAR32(0xf00) = 0x00000900; |
| MCHBAR32(0xf04) = 0x00002e80; |
| } |
| MCHBAR16(0xf08) = 0x730f; |
| if (fsb == FSB_CLOCK_667MHz) |
| MCHBAR16(0xf0c) = 0x0b96; |
| else if (fsb == FSB_CLOCK_800MHz) |
| MCHBAR16(0xf0c) = 0x0c99; |
| else if (fsb == FSB_CLOCK_1067MHz) |
| MCHBAR16(0xf0c) = 0x10a4; |
| MCHBAR32(0xf80) |= 1 << 31; |
| |
| MCHBAR32(0x40) = (MCHBAR32(0x40) & ~(0x3f << 24)) | |
| (sysinfo->cores == 4) ? (1 << 24) : 0; |
| |
| MCHBAR32(0x40) &= ~(1 << 19); |
| MCHBAR32(0x40) |= 1 << 13; |
| MCHBAR32(0x40) |= 1 << 21; |
| MCHBAR32(0x40) |= 1 << 9; |
| if (stepping > STEPPING_B1) { |
| if (fsb != FSB_CLOCK_1067MHz) { |
| MCHBAR32(0x70) |= 1 << 30; |
| } else { |
| MCHBAR32(0x70) &= ~(1 << 30); |
| } |
| } |
| if (stepping < STEPPING_B1) |
| MCHBAR32(0x70) |= 1 << 29; |
| else |
| MCHBAR32(0x70) &= ~(1 << 29); |
| if (stepping > STEPPING_B1) { |
| MCHBAR32(0x70) |= 1 << 28; |
| MCHBAR32(0x70) |= 1 << 25; |
| } |
| if (stepping > STEPPING_B0) { |
| if (fsb != FSB_CLOCK_667MHz) |
| MCHBAR32(0x70) = (MCHBAR32(0x70) & ~(3<<21)) | (1 << 21); |
| else |
| MCHBAR32(0x70) = (MCHBAR32(0x70) & ~(3<<21)); |
| } |
| if (stepping > STEPPING_B2) |
| MCHBAR32(0x44) |= 1 << 30; |
| MCHBAR32(0x44) |= 1 << 31; |
| if (sysinfo->cores == 2) |
| MCHBAR32(0x44) |= 1 << 26; |
| MCHBAR32(0x44) |= 1 << 21; |
| MCHBAR32(0x44) = (MCHBAR32(0x44) & ~(3 << 24)) | (2 << 24); |
| MCHBAR32(0x44) |= 1 << 5; |
| MCHBAR32(0x44) |= 1 << 4; |
| MCHBAR32(0x90) = (MCHBAR32(0x90) & ~7) | 4; |
| MCHBAR32(0x94) |= 1 << 29; |
| MCHBAR32(0x94) |= 1 << 11; |
| if (stepping < STEPPING_B0) |
| MCHBAR32(0x94) = (MCHBAR32(0x94) & ~(3 << 19)) | (2 << 19); |
| if (stepping > STEPPING_B2) |
| MCHBAR32(0x94) |= 1 << 21; |
| MCHBAR8(0xb00) &= ~1; |
| MCHBAR8(0xb00) |= 1 << 7; |
| if (fsb != FSB_CLOCK_1067MHz) |
| MCHBAR8(0x75) |= 1 << 6; |
| else |
| MCHBAR8(0x75) &= 1 << 1; |
| MCHBAR8(0x77) |= 3; |
| if (stepping >= STEPPING_B1) |
| MCHBAR8(0x77) |= 1 << 2; |
| if (stepping > STEPPING_B2) |
| MCHBAR8(0x77) |= 1 << 4; |
| if (MCHBAR16(0x90) & 0x100) |
| MCHBAR8(0x90) &= ~(7 << 4); |
| if (stepping >= STEPPING_B0) |
| MCHBAR8(0xd0) |= 1 << 1; |
| MCHBAR8(0xbd8) |= 3 << 2; |
| if (stepping >= STEPPING_B3) |
| MCHBAR32(0x70) |= 1 << 0; |
| MCHBAR32(0x70) |= 1 << 3; |
| if (stepping >= STEPPING_B0) |
| MCHBAR32(0x70) &= ~(1 << 16); |
| else |
| MCHBAR32(0x70) |= 1 << 16; |
| if (stepping >= STEPPING_B3) |
| MCHBAR8(0xc14) |= 1 << 1; |
| if (stepping >= STEPPING_B1) |
| MCHBAR16(0xffc) = (MCHBAR16(0xffc) & ~0x7ff) | 0x7c0; |
| MCHBAR16(0x48) = (MCHBAR16(0x48) & ~(0xff << 2)) | (0xaa << 2); |
| if (stepping == STEPPING_CONVERSION_A1) { |
| MCHBAR16(0x40) |= 1 << 12; |
| MCHBAR32(0x94) |= 3 << 22; |
| } |
| |
| const int cpu_supports_super_lfm = |
| rdmsr(MSR_EXTENDED_CONFIG).lo & (1 << 27); |
| if ((stepping >= STEPPING_B0) && cpu_supports_super_lfm) { |
| MCHBAR16(CLKCFG_MCHBAR) &= ~(1 << 7); |
| MCHBAR16(CLKCFG_MCHBAR) |= 1 << 14; |
| } else { |
| MCHBAR16(CLKCFG_MCHBAR) &= ~(1 << 14); |
| MCHBAR16(CLKCFG_MCHBAR) |= 1 << 7; |
| MCHBAR32(0x44) &= ~(1 << 31); /* Was set above. */ |
| } |
| |
| if ((sysinfo->gfx_type != GMCH_PM45) && do_freq_scaling_cfg && |
| (sysinfo->gfx_type != GMCH_UNKNOWN)) |
| init_freq_scaling(sysinfo->gfx_type, |
| sysinfo->gs45_low_power_mode); |
| |
| /* This has to be the last write to CLKCFG. */ |
| if ((fsb == FSB_CLOCK_1067MHz) && (memclk == MEM_CLOCK_667MT)) |
| MCHBAR32(CLKCFG_MCHBAR) &= ~(1 << 17); |
| } |