| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (C) 2016 Google, Inc |
| */ |
| |
| #include <common.h> |
| #include <bios_emul.h> |
| #include <dm.h> |
| #include <errno.h> |
| #include <fdtdec.h> |
| #include <log.h> |
| #include <pci_rom.h> |
| #include <vbe.h> |
| #include <asm/intel_regs.h> |
| #include <asm/io.h> |
| #include <asm/mtrr.h> |
| #include <asm/pci.h> |
| #include <asm/arch/pch.h> |
| #include <asm/arch/sandybridge.h> |
| #include <linux/delay.h> |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| struct gt_powermeter { |
| u16 reg; |
| u32 value; |
| }; |
| |
| /* These are magic values - unfortunately the meaning is unknown */ |
| static const struct gt_powermeter snb_pm_gt1[] = { |
| { 0xa200, 0xcc000000 }, |
| { 0xa204, 0x07000040 }, |
| { 0xa208, 0x0000fe00 }, |
| { 0xa20c, 0x00000000 }, |
| { 0xa210, 0x17000000 }, |
| { 0xa214, 0x00000021 }, |
| { 0xa218, 0x0817fe19 }, |
| { 0xa21c, 0x00000000 }, |
| { 0xa220, 0x00000000 }, |
| { 0xa224, 0xcc000000 }, |
| { 0xa228, 0x07000040 }, |
| { 0xa22c, 0x0000fe00 }, |
| { 0xa230, 0x00000000 }, |
| { 0xa234, 0x17000000 }, |
| { 0xa238, 0x00000021 }, |
| { 0xa23c, 0x0817fe19 }, |
| { 0xa240, 0x00000000 }, |
| { 0xa244, 0x00000000 }, |
| { 0xa248, 0x8000421e }, |
| { 0 } |
| }; |
| |
| static const struct gt_powermeter snb_pm_gt2[] = { |
| { 0xa200, 0x330000a6 }, |
| { 0xa204, 0x402d0031 }, |
| { 0xa208, 0x00165f83 }, |
| { 0xa20c, 0xf1000000 }, |
| { 0xa210, 0x00000000 }, |
| { 0xa214, 0x00160016 }, |
| { 0xa218, 0x002a002b }, |
| { 0xa21c, 0x00000000 }, |
| { 0xa220, 0x00000000 }, |
| { 0xa224, 0x330000a6 }, |
| { 0xa228, 0x402d0031 }, |
| { 0xa22c, 0x00165f83 }, |
| { 0xa230, 0xf1000000 }, |
| { 0xa234, 0x00000000 }, |
| { 0xa238, 0x00160016 }, |
| { 0xa23c, 0x002a002b }, |
| { 0xa240, 0x00000000 }, |
| { 0xa244, 0x00000000 }, |
| { 0xa248, 0x8000421e }, |
| { 0 } |
| }; |
| |
| static const struct gt_powermeter ivb_pm_gt1[] = { |
| { 0xa800, 0x00000000 }, |
| { 0xa804, 0x00021c00 }, |
| { 0xa808, 0x00000403 }, |
| { 0xa80c, 0x02001700 }, |
| { 0xa810, 0x05000200 }, |
| { 0xa814, 0x00000000 }, |
| { 0xa818, 0x00690500 }, |
| { 0xa81c, 0x0000007f }, |
| { 0xa820, 0x01002501 }, |
| { 0xa824, 0x00000300 }, |
| { 0xa828, 0x01000331 }, |
| { 0xa82c, 0x0000000c }, |
| { 0xa830, 0x00010016 }, |
| { 0xa834, 0x01100101 }, |
| { 0xa838, 0x00010103 }, |
| { 0xa83c, 0x00041300 }, |
| { 0xa840, 0x00000b30 }, |
| { 0xa844, 0x00000000 }, |
| { 0xa848, 0x7f000000 }, |
| { 0xa84c, 0x05000008 }, |
| { 0xa850, 0x00000001 }, |
| { 0xa854, 0x00000004 }, |
| { 0xa858, 0x00000007 }, |
| { 0xa85c, 0x00000000 }, |
| { 0xa860, 0x00010000 }, |
| { 0xa248, 0x0000221e }, |
| { 0xa900, 0x00000000 }, |
| { 0xa904, 0x00001c00 }, |
| { 0xa908, 0x00000000 }, |
| { 0xa90c, 0x06000000 }, |
| { 0xa910, 0x09000200 }, |
| { 0xa914, 0x00000000 }, |
| { 0xa918, 0x00590000 }, |
| { 0xa91c, 0x00000000 }, |
| { 0xa920, 0x04002501 }, |
| { 0xa924, 0x00000100 }, |
| { 0xa928, 0x03000410 }, |
| { 0xa92c, 0x00000000 }, |
| { 0xa930, 0x00020000 }, |
| { 0xa934, 0x02070106 }, |
| { 0xa938, 0x00010100 }, |
| { 0xa93c, 0x00401c00 }, |
| { 0xa940, 0x00000000 }, |
| { 0xa944, 0x00000000 }, |
| { 0xa948, 0x10000e00 }, |
| { 0xa94c, 0x02000004 }, |
| { 0xa950, 0x00000001 }, |
| { 0xa954, 0x00000004 }, |
| { 0xa960, 0x00060000 }, |
| { 0xaa3c, 0x00001c00 }, |
| { 0xaa54, 0x00000004 }, |
| { 0xaa60, 0x00060000 }, |
| { 0 } |
| }; |
| |
| static const struct gt_powermeter ivb_pm_gt2_17w[] = { |
| { 0xa800, 0x20000000 }, |
| { 0xa804, 0x000e3800 }, |
| { 0xa808, 0x00000806 }, |
| { 0xa80c, 0x0c002f00 }, |
| { 0xa810, 0x0c000800 }, |
| { 0xa814, 0x00000000 }, |
| { 0xa818, 0x00d20d00 }, |
| { 0xa81c, 0x000000ff }, |
| { 0xa820, 0x03004b02 }, |
| { 0xa824, 0x00000600 }, |
| { 0xa828, 0x07000773 }, |
| { 0xa82c, 0x00000000 }, |
| { 0xa830, 0x00020032 }, |
| { 0xa834, 0x1520040d }, |
| { 0xa838, 0x00020105 }, |
| { 0xa83c, 0x00083700 }, |
| { 0xa840, 0x000016ff }, |
| { 0xa844, 0x00000000 }, |
| { 0xa848, 0xff000000 }, |
| { 0xa84c, 0x0a000010 }, |
| { 0xa850, 0x00000002 }, |
| { 0xa854, 0x00000008 }, |
| { 0xa858, 0x0000000f }, |
| { 0xa85c, 0x00000000 }, |
| { 0xa860, 0x00020000 }, |
| { 0xa248, 0x0000221e }, |
| { 0xa900, 0x00000000 }, |
| { 0xa904, 0x00003800 }, |
| { 0xa908, 0x00000000 }, |
| { 0xa90c, 0x0c000000 }, |
| { 0xa910, 0x12000800 }, |
| { 0xa914, 0x00000000 }, |
| { 0xa918, 0x00b20000 }, |
| { 0xa91c, 0x00000000 }, |
| { 0xa920, 0x08004b02 }, |
| { 0xa924, 0x00000300 }, |
| { 0xa928, 0x01000820 }, |
| { 0xa92c, 0x00000000 }, |
| { 0xa930, 0x00030000 }, |
| { 0xa934, 0x15150406 }, |
| { 0xa938, 0x00020300 }, |
| { 0xa93c, 0x00903900 }, |
| { 0xa940, 0x00000000 }, |
| { 0xa944, 0x00000000 }, |
| { 0xa948, 0x20001b00 }, |
| { 0xa94c, 0x0a000010 }, |
| { 0xa950, 0x00000000 }, |
| { 0xa954, 0x00000008 }, |
| { 0xa960, 0x00110000 }, |
| { 0xaa3c, 0x00003900 }, |
| { 0xaa54, 0x00000008 }, |
| { 0xaa60, 0x00110000 }, |
| { 0 } |
| }; |
| |
| static const struct gt_powermeter ivb_pm_gt2_35w[] = { |
| { 0xa800, 0x00000000 }, |
| { 0xa804, 0x00030400 }, |
| { 0xa808, 0x00000806 }, |
| { 0xa80c, 0x0c002f00 }, |
| { 0xa810, 0x0c000300 }, |
| { 0xa814, 0x00000000 }, |
| { 0xa818, 0x00d20d00 }, |
| { 0xa81c, 0x000000ff }, |
| { 0xa820, 0x03004b02 }, |
| { 0xa824, 0x00000600 }, |
| { 0xa828, 0x07000773 }, |
| { 0xa82c, 0x00000000 }, |
| { 0xa830, 0x00020032 }, |
| { 0xa834, 0x1520040d }, |
| { 0xa838, 0x00020105 }, |
| { 0xa83c, 0x00083700 }, |
| { 0xa840, 0x000016ff }, |
| { 0xa844, 0x00000000 }, |
| { 0xa848, 0xff000000 }, |
| { 0xa84c, 0x0a000010 }, |
| { 0xa850, 0x00000001 }, |
| { 0xa854, 0x00000008 }, |
| { 0xa858, 0x00000008 }, |
| { 0xa85c, 0x00000000 }, |
| { 0xa860, 0x00020000 }, |
| { 0xa248, 0x0000221e }, |
| { 0xa900, 0x00000000 }, |
| { 0xa904, 0x00003800 }, |
| { 0xa908, 0x00000000 }, |
| { 0xa90c, 0x0c000000 }, |
| { 0xa910, 0x12000800 }, |
| { 0xa914, 0x00000000 }, |
| { 0xa918, 0x00b20000 }, |
| { 0xa91c, 0x00000000 }, |
| { 0xa920, 0x08004b02 }, |
| { 0xa924, 0x00000300 }, |
| { 0xa928, 0x01000820 }, |
| { 0xa92c, 0x00000000 }, |
| { 0xa930, 0x00030000 }, |
| { 0xa934, 0x15150406 }, |
| { 0xa938, 0x00020300 }, |
| { 0xa93c, 0x00903900 }, |
| { 0xa940, 0x00000000 }, |
| { 0xa944, 0x00000000 }, |
| { 0xa948, 0x20001b00 }, |
| { 0xa94c, 0x0a000010 }, |
| { 0xa950, 0x00000000 }, |
| { 0xa954, 0x00000008 }, |
| { 0xa960, 0x00110000 }, |
| { 0xaa3c, 0x00003900 }, |
| { 0xaa54, 0x00000008 }, |
| { 0xaa60, 0x00110000 }, |
| { 0 } |
| }; |
| |
| static inline u32 gtt_read(void *bar, u32 reg) |
| { |
| return readl(bar + reg); |
| } |
| |
| static inline void gtt_write(void *bar, u32 reg, u32 data) |
| { |
| writel(data, bar + reg); |
| } |
| |
| static void gtt_write_powermeter(void *bar, const struct gt_powermeter *pm) |
| { |
| for (; pm && pm->reg; pm++) |
| gtt_write(bar, pm->reg, pm->value); |
| } |
| |
| #define GTT_RETRY 1000 |
| static int gtt_poll(void *bar, u32 reg, u32 mask, u32 value) |
| { |
| unsigned try = GTT_RETRY; |
| u32 data; |
| |
| while (try--) { |
| data = gtt_read(bar, reg); |
| if ((data & mask) == value) |
| return 1; |
| udelay(10); |
| } |
| |
| printf("GT init timeout\n"); |
| return 0; |
| } |
| |
| static int gma_pm_init_pre_vbios(void *gtt_bar, int rev) |
| { |
| u32 reg32; |
| |
| debug("GT Power Management Init, silicon = %#x\n", rev); |
| |
| if (rev < IVB_STEP_C0) { |
| /* 1: Enable force wake */ |
| gtt_write(gtt_bar, 0xa18c, 0x00000001); |
| gtt_poll(gtt_bar, 0x130090, (1 << 0), (1 << 0)); |
| } else { |
| gtt_write(gtt_bar, 0xa180, 1 << 5); |
| gtt_write(gtt_bar, 0xa188, 0xffff0001); |
| gtt_poll(gtt_bar, 0x130040, (1 << 0), (1 << 0)); |
| } |
| |
| if ((rev & BASE_REV_MASK) == BASE_REV_SNB) { |
| /* 1d: Set GTT+0x42004 [15:14]=11 (SnB C1+) */ |
| reg32 = gtt_read(gtt_bar, 0x42004); |
| reg32 |= (1 << 14) | (1 << 15); |
| gtt_write(gtt_bar, 0x42004, reg32); |
| } |
| |
| if (rev >= IVB_STEP_A0) { |
| /* Display Reset Acknowledge Settings */ |
| reg32 = gtt_read(gtt_bar, 0x45010); |
| reg32 |= (1 << 1) | (1 << 0); |
| gtt_write(gtt_bar, 0x45010, reg32); |
| } |
| |
| /* 2: Get GT SKU from GTT+0x911c[13] */ |
| reg32 = gtt_read(gtt_bar, 0x911c); |
| if ((rev & BASE_REV_MASK) == BASE_REV_SNB) { |
| if (reg32 & (1 << 13)) { |
| debug("SNB GT1 Power Meter Weights\n"); |
| gtt_write_powermeter(gtt_bar, snb_pm_gt1); |
| } else { |
| debug("SNB GT2 Power Meter Weights\n"); |
| gtt_write_powermeter(gtt_bar, snb_pm_gt2); |
| } |
| } else { |
| u32 unit = readl(MCHBAR_REG(0x5938)) & 0xf; |
| |
| if (reg32 & (1 << 13)) { |
| /* GT1 SKU */ |
| debug("IVB GT1 Power Meter Weights\n"); |
| gtt_write_powermeter(gtt_bar, ivb_pm_gt1); |
| } else { |
| /* GT2 SKU */ |
| u32 tdp = readl(MCHBAR_REG(0x5930)) & 0x7fff; |
| tdp /= (1 << unit); |
| |
| if (tdp <= 17) { |
| /* <=17W ULV */ |
| debug("IVB GT2 17W Power Meter Weights\n"); |
| gtt_write_powermeter(gtt_bar, ivb_pm_gt2_17w); |
| } else if ((tdp >= 25) && (tdp <= 35)) { |
| /* 25W-35W */ |
| debug("IVB GT2 25W-35W Power Meter Weights\n"); |
| gtt_write_powermeter(gtt_bar, ivb_pm_gt2_35w); |
| } else { |
| /* All others */ |
| debug("IVB GT2 35W Power Meter Weights\n"); |
| gtt_write_powermeter(gtt_bar, ivb_pm_gt2_35w); |
| } |
| } |
| } |
| |
| /* 3: Gear ratio map */ |
| gtt_write(gtt_bar, 0xa004, 0x00000010); |
| |
| /* 4: GFXPAUSE */ |
| gtt_write(gtt_bar, 0xa000, 0x00070020); |
| |
| /* 5: Dynamic EU trip control */ |
| gtt_write(gtt_bar, 0xa080, 0x00000004); |
| |
| /* 6: ECO bits */ |
| reg32 = gtt_read(gtt_bar, 0xa180); |
| reg32 |= (1 << 26) | (1 << 31); |
| /* (bit 20=1 for SNB step D1+ / IVB A0+) */ |
| if (rev >= SNB_STEP_D1) |
| reg32 |= (1 << 20); |
| gtt_write(gtt_bar, 0xa180, reg32); |
| |
| /* 6a: for SnB step D2+ only */ |
| if (((rev & BASE_REV_MASK) == BASE_REV_SNB) && |
| (rev >= SNB_STEP_D2)) { |
| reg32 = gtt_read(gtt_bar, 0x9400); |
| reg32 |= (1 << 7); |
| gtt_write(gtt_bar, 0x9400, reg32); |
| |
| reg32 = gtt_read(gtt_bar, 0x941c); |
| reg32 &= 0xf; |
| reg32 |= (1 << 1); |
| gtt_write(gtt_bar, 0x941c, reg32); |
| gtt_poll(gtt_bar, 0x941c, (1 << 1), (0 << 1)); |
| } |
| |
| if ((rev & BASE_REV_MASK) == BASE_REV_IVB) { |
| reg32 = gtt_read(gtt_bar, 0x907c); |
| reg32 |= (1 << 16); |
| gtt_write(gtt_bar, 0x907c, reg32); |
| |
| /* 6b: Clocking reset controls */ |
| gtt_write(gtt_bar, 0x9424, 0x00000001); |
| } else { |
| /* 6b: Clocking reset controls */ |
| gtt_write(gtt_bar, 0x9424, 0x00000000); |
| } |
| |
| /* 7 */ |
| if (gtt_poll(gtt_bar, 0x138124, (1 << 31), (0 << 31))) { |
| gtt_write(gtt_bar, 0x138128, 0x00000029); /* Mailbox Data */ |
| /* Mailbox Cmd for RC6 VID */ |
| gtt_write(gtt_bar, 0x138124, 0x80000004); |
| if (gtt_poll(gtt_bar, 0x138124, (1 << 31), (0 << 31))) |
| gtt_write(gtt_bar, 0x138124, 0x8000000a); |
| gtt_poll(gtt_bar, 0x138124, (1 << 31), (0 << 31)); |
| } |
| |
| /* 8 */ |
| gtt_write(gtt_bar, 0xa090, 0x00000000); /* RC Control */ |
| gtt_write(gtt_bar, 0xa098, 0x03e80000); /* RC1e Wake Rate Limit */ |
| gtt_write(gtt_bar, 0xa09c, 0x0028001e); /* RC6/6p Wake Rate Limit */ |
| gtt_write(gtt_bar, 0xa0a0, 0x0000001e); /* RC6pp Wake Rate Limit */ |
| gtt_write(gtt_bar, 0xa0a8, 0x0001e848); /* RC Evaluation Interval */ |
| gtt_write(gtt_bar, 0xa0ac, 0x00000019); /* RC Idle Hysteresis */ |
| |
| /* 9 */ |
| gtt_write(gtt_bar, 0x2054, 0x0000000a); /* Render Idle Max Count */ |
| gtt_write(gtt_bar, 0x12054, 0x0000000a); /* Video Idle Max Count */ |
| gtt_write(gtt_bar, 0x22054, 0x0000000a); /* Blitter Idle Max Count */ |
| |
| /* 10 */ |
| gtt_write(gtt_bar, 0xa0b0, 0x00000000); /* Unblock Ack to Busy */ |
| gtt_write(gtt_bar, 0xa0b4, 0x000003e8); /* RC1e Threshold */ |
| gtt_write(gtt_bar, 0xa0b8, 0x0000c350); /* RC6 Threshold */ |
| gtt_write(gtt_bar, 0xa0bc, 0x000186a0); /* RC6p Threshold */ |
| gtt_write(gtt_bar, 0xa0c0, 0x0000fa00); /* RC6pp Threshold */ |
| |
| /* 11 */ |
| gtt_write(gtt_bar, 0xa010, 0x000f4240); /* RP Down Timeout */ |
| gtt_write(gtt_bar, 0xa014, 0x12060000); /* RP Interrupt Limits */ |
| gtt_write(gtt_bar, 0xa02c, 0x00015f90); /* RP Up Threshold */ |
| gtt_write(gtt_bar, 0xa030, 0x000186a0); /* RP Down Threshold */ |
| gtt_write(gtt_bar, 0xa068, 0x000186a0); /* RP Up EI */ |
| gtt_write(gtt_bar, 0xa06c, 0x000493e0); /* RP Down EI */ |
| gtt_write(gtt_bar, 0xa070, 0x0000000a); /* RP Idle Hysteresis */ |
| |
| /* 11a: Enable Render Standby (RC6) */ |
| if ((rev & BASE_REV_MASK) == BASE_REV_IVB) { |
| /* |
| * IvyBridge should also support DeepRenderStandby. |
| * |
| * Unfortunately it does not work reliably on all SKUs so |
| * disable it here and it can be enabled by the kernel. |
| */ |
| gtt_write(gtt_bar, 0xa090, 0x88040000); /* HW RC Control */ |
| } else { |
| gtt_write(gtt_bar, 0xa090, 0x88040000); /* HW RC Control */ |
| } |
| |
| /* 12: Normal Frequency Request */ |
| /* RPNFREQ_VAL comes from MCHBAR 0x5998 23:16 (8 bits!? use 7) */ |
| reg32 = readl(MCHBAR_REG(0x5998)); |
| reg32 >>= 16; |
| reg32 &= 0xef; |
| reg32 <<= 25; |
| gtt_write(gtt_bar, 0xa008, reg32); |
| |
| /* 13: RP Control */ |
| gtt_write(gtt_bar, 0xa024, 0x00000592); |
| |
| /* 14: Enable PM Interrupts */ |
| gtt_write(gtt_bar, 0x4402c, 0x03000076); |
| |
| /* Clear 0x6c024 [8:6] */ |
| reg32 = gtt_read(gtt_bar, 0x6c024); |
| reg32 &= ~0x000001c0; |
| gtt_write(gtt_bar, 0x6c024, reg32); |
| |
| return 0; |
| } |
| |
| static int gma_pm_init_post_vbios(struct udevice *dev, int rev, void *gtt_bar) |
| { |
| const void *blob = gd->fdt_blob; |
| int node = dev_of_offset(dev); |
| u32 reg32, cycle_delay; |
| |
| debug("GT Power Management Init (post VBIOS)\n"); |
| |
| /* 15: Deassert Force Wake */ |
| if (rev < IVB_STEP_C0) { |
| gtt_write(gtt_bar, 0xa18c, gtt_read(gtt_bar, 0xa18c) & ~1); |
| gtt_poll(gtt_bar, 0x130090, (1 << 0), (0 << 0)); |
| } else { |
| gtt_write(gtt_bar, 0xa188, 0x1fffe); |
| if (gtt_poll(gtt_bar, 0x130040, (1 << 0), (0 << 0))) { |
| gtt_write(gtt_bar, 0xa188, |
| gtt_read(gtt_bar, 0xa188) | 1); |
| } |
| } |
| |
| /* 16: SW RC Control */ |
| gtt_write(gtt_bar, 0xa094, 0x00060000); |
| |
| /* Setup Digital Port Hotplug */ |
| reg32 = gtt_read(gtt_bar, 0xc4030); |
| if (!reg32) { |
| u32 dp_hotplug[3]; |
| |
| if (fdtdec_get_int_array(blob, node, "intel,dp_hotplug", |
| dp_hotplug, ARRAY_SIZE(dp_hotplug))) |
| return -EINVAL; |
| |
| reg32 = (dp_hotplug[0] & 0x7) << 2; |
| reg32 |= (dp_hotplug[0] & 0x7) << 10; |
| reg32 |= (dp_hotplug[0] & 0x7) << 18; |
| gtt_write(gtt_bar, 0xc4030, reg32); |
| } |
| |
| /* Setup Panel Power On Delays */ |
| reg32 = gtt_read(gtt_bar, 0xc7208); |
| if (!reg32) { |
| reg32 = (unsigned)fdtdec_get_int(blob, node, |
| "panel-port-select", 0) << 30; |
| reg32 |= fdtdec_get_int(blob, node, "panel-power-up-delay", 0) |
| << 16; |
| reg32 |= fdtdec_get_int(blob, node, |
| "panel-power-backlight-on-delay", 0); |
| gtt_write(gtt_bar, 0xc7208, reg32); |
| } |
| |
| /* Setup Panel Power Off Delays */ |
| reg32 = gtt_read(gtt_bar, 0xc720c); |
| if (!reg32) { |
| reg32 = fdtdec_get_int(blob, node, "panel-power-down-delay", 0) |
| << 16; |
| reg32 |= fdtdec_get_int(blob, node, |
| "panel-power-backlight-off-delay", 0); |
| gtt_write(gtt_bar, 0xc720c, reg32); |
| } |
| |
| /* Setup Panel Power Cycle Delay */ |
| cycle_delay = fdtdec_get_int(blob, node, |
| "intel,panel-power-cycle-delay", 0); |
| if (cycle_delay) { |
| reg32 = gtt_read(gtt_bar, 0xc7210); |
| reg32 &= ~0xff; |
| reg32 |= cycle_delay; |
| gtt_write(gtt_bar, 0xc7210, reg32); |
| } |
| |
| /* Enable Backlight if needed */ |
| reg32 = fdtdec_get_int(blob, node, "intel,cpu-backlight", 0); |
| if (reg32) { |
| gtt_write(gtt_bar, 0x48250, (1 << 31)); |
| gtt_write(gtt_bar, 0x48254, reg32); |
| } |
| reg32 = fdtdec_get_int(blob, node, "intel,pch-backlight", 0); |
| if (reg32) { |
| gtt_write(gtt_bar, 0xc8250, (1 << 31)); |
| gtt_write(gtt_bar, 0xc8254, reg32); |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Some vga option roms are used for several chipsets but they only have one |
| * PCI ID in their header. If we encounter such an option rom, we need to do |
| * the mapping ourselves. |
| */ |
| |
| uint32_t board_map_oprom_vendev(uint32_t vendev) |
| { |
| switch (vendev) { |
| case 0x80860102: /* GT1 Desktop */ |
| case 0x8086010a: /* GT1 Server */ |
| case 0x80860112: /* GT2 Desktop */ |
| case 0x80860116: /* GT2 Mobile */ |
| case 0x80860122: /* GT2 Desktop >=1.3GHz */ |
| case 0x80860126: /* GT2 Mobile >=1.3GHz */ |
| case 0x80860156: /* IVB */ |
| case 0x80860166: /* IVB */ |
| return 0x80860106; /* GT1 Mobile */ |
| } |
| |
| return vendev; |
| } |
| |
| static int int15_handler(void) |
| { |
| int res = 0; |
| |
| debug("%s: INT15 function %04x!\n", __func__, M.x86.R_AX); |
| |
| switch (M.x86.R_AX) { |
| case 0x5f34: |
| /* |
| * Set Panel Fitting Hook: |
| * bit 2 = Graphics Stretching |
| * bit 1 = Text Stretching |
| * bit 0 = Centering (do not set with bit1 or bit2) |
| * 0 = video bios default |
| */ |
| M.x86.R_AX = 0x005f; |
| M.x86.R_CL = 0x00; /* Use video bios default */ |
| res = 1; |
| break; |
| case 0x5f35: |
| /* |
| * Boot Display Device Hook: |
| * bit 0 = CRT |
| * bit 1 = TV (eDP) |
| * bit 2 = EFP |
| * bit 3 = LFP |
| * bit 4 = CRT2 |
| * bit 5 = TV2 (eDP) |
| * bit 6 = EFP2 |
| * bit 7 = LFP2 |
| */ |
| M.x86.R_AX = 0x005f; |
| M.x86.R_CX = 0x0000; /* Use video bios default */ |
| res = 1; |
| break; |
| case 0x5f51: |
| /* |
| * Hook to select active LFP configuration: |
| * 00h = No LVDS, VBIOS does not enable LVDS |
| * 01h = Int-LVDS, LFP driven by integrated LVDS decoder |
| * 02h = SVDO-LVDS, LFP driven by SVDO decoder |
| * 03h = eDP, LFP Driven by Int-DisplayPort encoder |
| */ |
| M.x86.R_AX = 0x005f; |
| M.x86.R_CX = 0x0003; /* eDP */ |
| res = 1; |
| break; |
| case 0x5f70: |
| switch (M.x86.R_CH) { |
| case 0: |
| /* Get Mux */ |
| M.x86.R_AX = 0x005f; |
| M.x86.R_CX = 0x0000; |
| res = 1; |
| break; |
| case 1: |
| /* Set Mux */ |
| M.x86.R_AX = 0x005f; |
| M.x86.R_CX = 0x0000; |
| res = 1; |
| break; |
| case 2: |
| /* Get SG/Non-SG mode */ |
| M.x86.R_AX = 0x005f; |
| M.x86.R_CX = 0x0000; |
| res = 1; |
| break; |
| default: |
| /* Interrupt was not handled */ |
| debug("Unknown INT15 5f70 function: 0x%02x\n", |
| M.x86.R_CH); |
| break; |
| } |
| break; |
| case 0x5fac: |
| res = 1; |
| break; |
| default: |
| debug("Unknown INT15 function %04x!\n", M.x86.R_AX); |
| break; |
| } |
| return res; |
| } |
| |
| static void sandybridge_setup_graphics(struct udevice *dev, |
| struct udevice *video_dev) |
| { |
| u32 reg32; |
| u16 reg16; |
| u8 reg8; |
| |
| dm_pci_read_config16(video_dev, PCI_DEVICE_ID, ®16); |
| switch (reg16) { |
| case 0x0102: /* GT1 Desktop */ |
| case 0x0106: /* GT1 Mobile */ |
| case 0x010a: /* GT1 Server */ |
| case 0x0112: /* GT2 Desktop */ |
| case 0x0116: /* GT2 Mobile */ |
| case 0x0122: /* GT2 Desktop >=1.3GHz */ |
| case 0x0126: /* GT2 Mobile >=1.3GHz */ |
| case 0x0156: /* IvyBridge */ |
| case 0x0166: /* IvyBridge */ |
| break; |
| default: |
| debug("Graphics not supported by this CPU/chipset\n"); |
| return; |
| } |
| |
| debug("Initialising Graphics\n"); |
| |
| /* Setup IGD memory by setting GGC[7:3] = 1 for 32MB */ |
| dm_pci_read_config16(dev, GGC, ®16); |
| reg16 &= ~0x00f8; |
| reg16 |= 1 << 3; |
| /* Program GTT memory by setting GGC[9:8] = 2MB */ |
| reg16 &= ~0x0300; |
| reg16 |= 2 << 8; |
| /* Enable VGA decode */ |
| reg16 &= ~0x0002; |
| dm_pci_write_config16(dev, GGC, reg16); |
| |
| /* Enable 256MB aperture */ |
| dm_pci_read_config8(video_dev, MSAC, ®8); |
| reg8 &= ~0x06; |
| reg8 |= 0x02; |
| dm_pci_write_config8(video_dev, MSAC, reg8); |
| |
| /* Erratum workarounds */ |
| reg32 = readl(MCHBAR_REG(0x5f00)); |
| reg32 |= (1 << 9) | (1 << 10); |
| writel(reg32, MCHBAR_REG(0x5f00)); |
| |
| /* Enable SA Clock Gating */ |
| reg32 = readl(MCHBAR_REG(0x5f00)); |
| writel(reg32 | 1, MCHBAR_REG(0x5f00)); |
| |
| /* GPU RC6 workaround for sighting 366252 */ |
| reg32 = readl(MCHBAR_REG(0x5d14)); |
| reg32 |= (1 << 31); |
| writel(reg32, MCHBAR_REG(0x5d14)); |
| |
| /* VLW */ |
| reg32 = readl(MCHBAR_REG(0x6120)); |
| reg32 &= ~(1 << 0); |
| writel(reg32, MCHBAR_REG(0x6120)); |
| |
| reg32 = readl(MCHBAR_REG(0x5418)); |
| reg32 |= (1 << 4) | (1 << 5); |
| writel(reg32, MCHBAR_REG(0x5418)); |
| } |
| |
| static int gma_func0_init(struct udevice *dev) |
| { |
| struct udevice *nbridge; |
| void *gtt_bar; |
| ulong base; |
| u32 reg32; |
| int ret; |
| int rev; |
| |
| /* Enable PCH Display Port */ |
| writew(0x0010, RCB_REG(DISPBDF)); |
| setbits_le32(RCB_REG(FD2), PCH_ENABLE_DBDF); |
| |
| ret = uclass_first_device_err(UCLASS_NORTHBRIDGE, &nbridge); |
| if (ret) |
| return ret; |
| rev = bridge_silicon_revision(nbridge); |
| sandybridge_setup_graphics(nbridge, dev); |
| |
| /* IGD needs to be Bus Master */ |
| dm_pci_read_config32(dev, PCI_COMMAND, ®32); |
| reg32 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO; |
| dm_pci_write_config32(dev, PCI_COMMAND, reg32); |
| |
| /* Use write-combining for the graphics memory, 256MB */ |
| base = dm_pci_read_bar32(dev, 2); |
| mtrr_add_request(MTRR_TYPE_WRCOMB, base, 256 << 20); |
| mtrr_commit(true); |
| |
| gtt_bar = (void *)(ulong)dm_pci_read_bar32(dev, 0); |
| debug("GT bar %p\n", gtt_bar); |
| ret = gma_pm_init_pre_vbios(gtt_bar, rev); |
| if (ret) |
| return ret; |
| |
| return rev; |
| } |
| |
| static int bd82x6x_video_probe(struct udevice *dev) |
| { |
| void *gtt_bar; |
| int ret, rev; |
| |
| rev = gma_func0_init(dev); |
| if (rev < 0) |
| return rev; |
| ret = vbe_setup_video(dev, int15_handler); |
| if (ret) |
| return ret; |
| |
| /* Post VBIOS init */ |
| gtt_bar = (void *)(ulong)dm_pci_read_bar32(dev, 0); |
| ret = gma_pm_init_post_vbios(dev, rev, gtt_bar); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| |
| static const struct udevice_id bd82x6x_video_ids[] = { |
| { .compatible = "intel,gma" }, |
| { } |
| }; |
| |
| U_BOOT_DRIVER(bd82x6x_video) = { |
| .name = "bd82x6x_video", |
| .id = UCLASS_VIDEO, |
| .of_match = bd82x6x_video_ids, |
| .probe = bd82x6x_video_probe, |
| }; |