| /* |
| * This file is part of the coreboot project. |
| * |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <arch/acpi.h> |
| #include <device/mmio.h> |
| #include <device/pci_ops.h> |
| #include <bootmode.h> |
| #include <console/console.h> |
| #include <delay.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <string.h> |
| #include <reg_script.h> |
| #include <cbmem.h> |
| #include <drivers/intel/gma/i915.h> |
| #include <drivers/intel/gma/i915_reg.h> |
| #include <drivers/intel/gma/libgfxinit.h> |
| #include <drivers/intel/gma/opregion.h> |
| #include <soc/cpu.h> |
| #include <soc/nvs.h> |
| #include <soc/pm.h> |
| #include <soc/ramstage.h> |
| #include <soc/systemagent.h> |
| #include <soc/intel/broadwell/chip.h> |
| #include <security/vboot/vbnv.h> |
| #include <soc/igd.h> |
| #include <types.h> |
| |
| #define GT_RETRY 1000 |
| enum { |
| GT_CDCLK_DEFAULT = 0, |
| GT_CDCLK_337, |
| GT_CDCLK_450, |
| GT_CDCLK_540, |
| GT_CDCLK_675, |
| }; |
| |
| static u32 reg_em4; |
| static u32 reg_em5; |
| |
| u32 igd_get_reg_em4(void) { return reg_em4; } |
| u32 igd_get_reg_em5(void) { return reg_em5; } |
| |
| struct reg_script haswell_early_init_script[] = { |
| /* Enable Force Wake */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa180, 0x00000020), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa188, 0x00010001), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, FORCEWAKE_ACK_HSW, 1, 1, GT_RETRY), |
| |
| /* Enable Counters */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa248, 0x00000016), |
| |
| /* GFXPAUSE settings */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa000, 0x00070020), |
| |
| /* ECO Settings */ |
| REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0xa180, 0xff3fffff, 0x15000000), |
| |
| /* Enable DOP Clock Gating */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9424, 0x000003fd), |
| |
| /* Enable Unit Level Clock Gating */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9400, 0x00000080), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9404, 0x40401000), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9408, 0x00000000), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x940c, 0x02000001), |
| |
| /* |
| * RC6 Settings |
| */ |
| |
| /* Wake Rate Limits */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa090, 0x00000000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa098, 0x03e80000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa09c, 0x00280000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa0a8, 0x0001e848), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa0ac, 0x00000019), |
| |
| /* Render/Video/Blitter Idle Max Count */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x02054, 0x0000000a), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x12054, 0x0000000a), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x22054, 0x0000000a), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x1a054, 0x0000000a), |
| |
| /* RC Sleep / RCx Thresholds */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa0b0, 0x00000000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa0b4, 0x000003e8), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa0b8, 0x0000c350), |
| |
| /* RP Settings */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa010, 0x000f4240), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa014, 0x12060000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa02c, 0x0000e808), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa030, 0x0003bd08), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa068, 0x000101d0), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa06c, 0x00055730), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa070, 0x0000000a), |
| |
| /* RP Control */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa024, 0x00000b92), |
| |
| /* HW RC6 Control */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa090, 0x88040000), |
| |
| /* Video Frequency Request */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa00c, 0x08000000), |
| |
| /* Set RC6 VIDs */ |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x138124, (1 << 31), 0, GT_RETRY), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x138128, 0), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x138124, 0x80000004), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x138124, (1 << 31), 0, GT_RETRY), |
| |
| /* Enable PM Interrupts */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x4402c, 0x03000076), |
| |
| /* Enable RC6 in idle */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa094, 0x00040000), |
| |
| REG_SCRIPT_END |
| }; |
| |
| static const struct reg_script haswell_late_init_script[] = { |
| /* Lock settings */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a248, (1 << 31)), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a004, (1 << 4)), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a080, (1 << 2)), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a180, (1 << 31)), |
| |
| /* Disable Force Wake */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa188, 0x00010000), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, FORCEWAKE_ACK_HSW, 1, 0, GT_RETRY), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa188, 0x00000001), |
| |
| /* Enable power well for DP and Audio */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x45400, (1 << 31)), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x45400, |
| (1 << 30), (1 << 30), GT_RETRY), |
| |
| REG_SCRIPT_END |
| }; |
| |
| static const struct reg_script broadwell_early_init_script[] = { |
| /* Enable Force Wake */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa188, 0x00010001), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, FORCEWAKE_ACK_HSW, 1, 1, GT_RETRY), |
| |
| /* Enable push bus metric control and shift */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa248, 0x00000004), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa250, 0x000000ff), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa25c, 0x00000010), |
| |
| /* GFXPAUSE settings (set based on stepping) */ |
| |
| /* ECO Settings */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa180, 0x45200000), |
| |
| /* Enable DOP Clock Gating */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9424, 0x000000fd), |
| |
| /* Enable Unit Level Clock Gating */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9400, 0x00000000), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9404, 0x40401000), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9408, 0x00000000), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x940c, 0x02000001), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x1a054, 0x0000000a), |
| |
| /* Video Frequency Request */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa00c, 0x08000000), |
| |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x138158, 0x00000009), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x13815c, 0x0000000d), |
| |
| /* |
| * RC6 Settings |
| */ |
| |
| /* Wake Rate Limits */ |
| REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x0a090, 0, 0), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a098, 0x03e80000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a09c, 0x00280000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a0a8, 0x0001e848), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a0ac, 0x00000019), |
| |
| /* Render/Video/Blitter Idle Max Count */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x02054, 0x0000000a), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x12054, 0x0000000a), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x22054, 0x0000000a), |
| |
| /* RC Sleep / RCx Thresholds */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a0b0, 0x00000000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a0b8, 0x00000271), |
| |
| /* RP Settings */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a010, 0x000f4240), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a014, 0x12060000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a02c, 0x0000e808), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a030, 0x0003bd08), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a068, 0x000101d0), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a06c, 0x00055730), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a070, 0x0000000a), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a168, 0x00000006), |
| |
| /* RP Control */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa024, 0x00000b92), |
| |
| /* HW RC6 Control */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa090, 0x90040000), |
| |
| /* Set RC6 VIDs */ |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x138124, (1 << 31), 0, GT_RETRY), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x138128, 0), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x138124, 0x80000004), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x138124, (1 << 31), 0, GT_RETRY), |
| |
| /* Enable PM Interrupts */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x4402c, 0x03000076), |
| |
| /* Enable RC6 in idle */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa094, 0x00040000), |
| |
| REG_SCRIPT_END |
| }; |
| |
| static const struct reg_script broadwell_late_init_script[] = { |
| /* Lock settings */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a248, (1 << 31)), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a000, (1 << 18)), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a180, (1 << 31)), |
| |
| /* Disable Force Wake */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa188, 0x00010000), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, FORCEWAKE_ACK_HSW, 1, 0, GT_RETRY), |
| |
| /* Enable power well for DP and Audio */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x45400, (1 << 31)), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x45400, |
| (1 << 30), (1 << 30), GT_RETRY), |
| |
| REG_SCRIPT_END |
| }; |
| |
| u32 map_oprom_vendev(u32 vendev) |
| { |
| return SA_IGD_OPROM_VENDEV; |
| } |
| |
| static struct resource *gtt_res = NULL; |
| |
| u32 gtt_read(u32 reg) |
| { |
| u32 val; |
| val = read32(res2mmio(gtt_res, reg, 0)); |
| return val; |
| |
| } |
| |
| void gtt_write(u32 reg, u32 data) |
| { |
| write32(res2mmio(gtt_res, reg, 0), data); |
| } |
| |
| static inline void gtt_rmw(u32 reg, u32 andmask, u32 ormask) |
| { |
| u32 val = gtt_read(reg); |
| val &= andmask; |
| val |= ormask; |
| gtt_write(reg, val); |
| } |
| |
| int gtt_poll(u32 reg, u32 mask, u32 value) |
| { unsigned int try = GT_RETRY; |
| u32 data; |
| |
| while (try--) { |
| data = gtt_read(reg); |
| if ((data & mask) == value) |
| return 1; |
| udelay(10); |
| } |
| |
| printk(BIOS_ERR, "GT init timeout\n"); |
| return 0; |
| } |
| |
| static void igd_setup_panel(struct device *dev) |
| { |
| config_t *conf = config_of(dev); |
| u32 reg32; |
| |
| /* Setup Digital Port Hotplug */ |
| reg32 = gtt_read(PCH_PORT_HOTPLUG); |
| if (!reg32) { |
| reg32 = (conf->gpu_dp_b_hotplug & 0x7) << 2; |
| reg32 |= (conf->gpu_dp_c_hotplug & 0x7) << 10; |
| reg32 |= (conf->gpu_dp_d_hotplug & 0x7) << 18; |
| gtt_write(PCH_PORT_HOTPLUG, reg32); |
| } |
| |
| /* Setup Panel Power On Delays */ |
| reg32 = gtt_read(PCH_PP_ON_DELAYS); |
| if (!reg32) { |
| reg32 = (conf->gpu_panel_port_select & 0x3) << 30; |
| reg32 |= (conf->gpu_panel_power_up_delay & 0x1fff) << 16; |
| reg32 |= (conf->gpu_panel_power_backlight_on_delay & 0x1fff); |
| gtt_write(PCH_PP_ON_DELAYS, reg32); |
| } |
| |
| /* Setup Panel Power Off Delays */ |
| reg32 = gtt_read(PCH_PP_OFF_DELAYS); |
| if (!reg32) { |
| reg32 = (conf->gpu_panel_power_down_delay & 0x1fff) << 16; |
| reg32 |= (conf->gpu_panel_power_backlight_off_delay & 0x1fff); |
| gtt_write(PCH_PP_OFF_DELAYS, reg32); |
| } |
| |
| /* Setup Panel Power Cycle Delay */ |
| if (conf->gpu_panel_power_cycle_delay) { |
| reg32 = gtt_read(PCH_PP_DIVISOR); |
| reg32 &= ~0xff; |
| reg32 |= conf->gpu_panel_power_cycle_delay & 0xff; |
| gtt_write(PCH_PP_DIVISOR, reg32); |
| } |
| |
| /* So far all devices seem to use the PCH PWM function. |
| The CPU PWM registers are all zero after reset. */ |
| if (conf->gpu_pch_backlight_pwm_hz) { |
| /* For Lynx Point-LP: |
| Reference clock is 24MHz. We can choose either a 16 |
| or a 128 step increment. Use 16 if we would have less |
| than 100 steps otherwise. */ |
| const unsigned int hz_limit = 24 * 1000 * 1000 / 128 / 100; |
| unsigned int pwm_increment, pwm_period; |
| u32 south_chicken2; |
| |
| south_chicken2 = gtt_read(SOUTH_CHICKEN2); |
| if (conf->gpu_pch_backlight_pwm_hz > hz_limit) { |
| pwm_increment = 16; |
| south_chicken2 |= 1 << 5; |
| } else { |
| pwm_increment = 128; |
| south_chicken2 &= ~(1 << 5); |
| } |
| gtt_write(SOUTH_CHICKEN2, south_chicken2); |
| |
| pwm_period = 24 * 1000 * 1000 / pwm_increment / conf->gpu_pch_backlight_pwm_hz; |
| /* Start with a 50% duty cycle. */ |
| gtt_write(BLC_PWM_PCH_CTL2, pwm_period << 16 | pwm_period / 2); |
| |
| gtt_write(BLC_PWM_PCH_CTL1, |
| (conf->gpu_pch_backlight_polarity == GPU_BACKLIGHT_POLARITY_LOW) << 29 | |
| BLM_PCH_OVERRIDE_ENABLE | BLM_PCH_PWM_ENABLE); |
| } |
| } |
| |
| static int igd_get_cdclk_haswell(u32 *const cdsel, int *const inform_pc, |
| struct device *const dev) |
| { |
| const config_t *const conf = config_of(dev); |
| int cdclk = conf->cdclk; |
| |
| /* Check for ULX GT1 or GT2 */ |
| const int devid = pci_read_config16(dev, PCI_DEVICE_ID); |
| const int gpu_is_ulx = devid == IGD_HASWELL_ULX_GT1 || |
| devid == IGD_HASWELL_ULX_GT2; |
| |
| /* Check for fixed fused clock */ |
| if (gtt_read(0x42014) & 1 << 24) |
| cdclk = GT_CDCLK_450; |
| |
| /* |
| * ULX defaults to 337MHz with possible override for 450MHz |
| * ULT is fixed at 450MHz |
| * others default to 540MHz with possible override for 450MHz |
| */ |
| if (gpu_is_ulx && cdclk <= GT_CDCLK_337) |
| cdclk = GT_CDCLK_337; |
| else if (gpu_is_ulx || cpu_is_ult() || |
| cdclk == GT_CDCLK_337 || cdclk == GT_CDCLK_450) |
| cdclk = GT_CDCLK_450; |
| else |
| cdclk = GT_CDCLK_540; |
| |
| *cdsel = cdclk != GT_CDCLK_450; |
| *inform_pc = gpu_is_ulx; |
| return cdclk; |
| } |
| |
| static int igd_get_cdclk_broadwell(u32 *const cdsel, int *const inform_pc, |
| struct device *const dev) |
| { |
| static const u32 cdsel_by_cdclk[] = { 0, 2, 0, 1, 3 }; |
| const config_t *const conf = config_of(dev); |
| int cdclk = conf->cdclk; |
| |
| /* Check for ULX */ |
| const int devid = pci_read_config16(dev, PCI_DEVICE_ID); |
| const int gpu_is_ulx = devid == IGD_BROADWELL_Y_GT2; |
| |
| /* Inform power controller of upcoming frequency change */ |
| gtt_write(0x138128, 0); |
| gtt_write(0x13812c, 0); |
| gtt_write(0x138124, 0x80000018); |
| |
| /* Poll GT driver mailbox for run/busy clear */ |
| if (gtt_poll(0x138124, (1 << 31), (0 << 31))) { |
| *inform_pc = 1; |
| } else { |
| cdclk = GT_CDCLK_450; |
| *inform_pc = 0; |
| } |
| |
| /* Check for fixed fused clock */ |
| if (gtt_read(0x42014) & 1 << 24) |
| cdclk = GT_CDCLK_450; |
| |
| /* |
| * ULX defaults to 450MHz with possible override up to 540MHz |
| * ULT defaults to 540MHz with possible override up to 675MHz |
| * others default to 675MHz with possible override for lower freqs |
| */ |
| if (cdclk == GT_CDCLK_337) |
| cdclk = GT_CDCLK_337; |
| else if (cdclk == GT_CDCLK_450 || |
| (gpu_is_ulx && cdclk == GT_CDCLK_DEFAULT)) |
| cdclk = GT_CDCLK_450; |
| else if (cdclk == GT_CDCLK_540 || gpu_is_ulx || |
| (cpu_is_ult() && cdclk == GT_CDCLK_DEFAULT)) |
| cdclk = GT_CDCLK_540; |
| else |
| cdclk = GT_CDCLK_675; |
| |
| *cdsel = cdsel_by_cdclk[cdclk]; |
| return cdclk; |
| } |
| |
| static void igd_cdclk_init(struct device *dev, const int is_broadwell) |
| { |
| u32 dpdiv, cdsel, cdval; |
| int cdclk, inform_pc; |
| |
| if (is_broadwell) |
| cdclk = igd_get_cdclk_broadwell(&cdsel, &inform_pc, dev); |
| else |
| cdclk = igd_get_cdclk_haswell(&cdsel, &inform_pc, dev); |
| |
| /* Set variables based on CD Clock setting */ |
| switch (cdclk) { |
| case GT_CDCLK_337: |
| cdval = 337; |
| dpdiv = 169; |
| reg_em4 = 16; |
| reg_em5 = 225; |
| break; |
| case GT_CDCLK_450: |
| cdval = 449; |
| dpdiv = 225; |
| reg_em4 = 4; |
| reg_em5 = 75; |
| break; |
| case GT_CDCLK_540: |
| cdval = 539; |
| dpdiv = 270; |
| reg_em4 = 4; |
| reg_em5 = 90; |
| break; |
| case GT_CDCLK_675: |
| cdval = 674; |
| dpdiv = 338; |
| reg_em4 = 8; |
| reg_em5 = 225; |
| default: |
| return; |
| } |
| |
| /* Set LPCLL_CTL CD Clock Frequency Select */ |
| gtt_rmw(0x130040, 0xf3ffffff, cdsel << 26); |
| |
| if (inform_pc) { |
| /* Inform power controller of selected frequency */ |
| gtt_write(0x138128, cdsel); |
| gtt_write(0x13812c, 0); |
| gtt_write(0x138124, 0x80000017); |
| } |
| |
| /* Program CD Clock Frequency */ |
| gtt_rmw(0x46200, 0xfffffc00, cdval); |
| |
| /* Set CPU DP AUX 2X bit clock dividers */ |
| gtt_rmw(0x64010, 0xfffff800, dpdiv); |
| gtt_rmw(0x64810, 0xfffff800, dpdiv); |
| } |
| |
| uintptr_t gma_get_gnvs_aslb(const void *gnvs) |
| { |
| const global_nvs_t *gnvs_ptr = gnvs; |
| return (uintptr_t)(gnvs_ptr ? gnvs_ptr->aslb : 0); |
| } |
| |
| void gma_set_gnvs_aslb(void *gnvs, uintptr_t aslb) |
| { |
| global_nvs_t *gnvs_ptr = gnvs; |
| if (gnvs_ptr) |
| gnvs_ptr->aslb = aslb; |
| } |
| |
| static void igd_init(struct device *dev) |
| { |
| int is_broadwell = !!(cpu_family_model() == BROADWELL_FAMILY_ULT); |
| u32 rp1_gfx_freq; |
| |
| /* IGD needs to be Bus Master */ |
| u32 reg32 = pci_read_config32(dev, PCI_COMMAND); |
| reg32 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO; |
| pci_write_config32(dev, PCI_COMMAND, reg32); |
| |
| gtt_res = find_resource(dev, PCI_BASE_ADDRESS_0); |
| if (!gtt_res || !gtt_res->base) |
| return; |
| |
| /* Wait for any configured pre-graphics delay */ |
| if (!acpi_is_wakeup_s3()) { |
| #if CONFIG(CHROMEOS) |
| if (display_init_required()) |
| mdelay(CONFIG_PRE_GRAPHICS_DELAY); |
| #else |
| mdelay(CONFIG_PRE_GRAPHICS_DELAY); |
| #endif |
| } |
| |
| /* Early init steps */ |
| if (is_broadwell) { |
| reg_script_run_on_dev(dev, broadwell_early_init_script); |
| |
| /* Set GFXPAUSE based on stepping */ |
| if (cpu_stepping() <= (CPUID_BROADWELL_E0 & 0xf) && |
| systemagent_revision() <= 9) { |
| gtt_write(0xa000, 0x300ff); |
| } else { |
| gtt_write(0xa000, 0x30020); |
| } |
| } else { |
| reg_script_run_on_dev(dev, haswell_early_init_script); |
| } |
| |
| /* Set RP1 graphics frequency */ |
| rp1_gfx_freq = (MCHBAR32(0x5998) >> 8) & 0xff; |
| gtt_write(0xa008, rp1_gfx_freq << 24); |
| |
| /* Post VBIOS panel setup */ |
| igd_setup_panel(dev); |
| |
| /* Initialize PCI device, load/execute BIOS Option ROM */ |
| pci_dev_init(dev); |
| |
| /* Late init steps */ |
| igd_cdclk_init(dev, is_broadwell); |
| if (is_broadwell) |
| reg_script_run_on_dev(dev, broadwell_late_init_script); |
| else |
| reg_script_run_on_dev(dev, haswell_late_init_script); |
| |
| if (gfx_get_init_done()) { |
| /* |
| * Work around VBIOS issue that is not clearing first 64 |
| * bytes of the framebuffer during VBE mode set. |
| */ |
| struct resource *fb = find_resource(dev, PCI_BASE_ADDRESS_2); |
| memset((void *)((u32)fb->base), 0, 64); |
| } |
| |
| if (!gfx_get_init_done() && !acpi_is_wakeup_s3()) { |
| /* |
| * Enable DDI-A if the Option ROM did not execute: |
| * |
| * bit 0: Display detected (RO) |
| * bit 4: DDI A supports 4 lanes and DDI E is not used |
| * bit 7: DDI buffer is idle |
| */ |
| gtt_write(DDI_BUF_CTL_A, DDI_BUF_IS_IDLE | DDI_A_4_LANES | |
| DDI_INIT_DISPLAY_DETECTED); |
| } |
| |
| if (CONFIG(MAINBOARD_USE_LIBGFXINIT)) { |
| int lightup_ok; |
| gma_gfxinit(&lightup_ok); |
| gfx_set_init_done(lightup_ok); |
| } |
| |
| intel_gma_restore_opregion(); |
| } |
| |
| static unsigned long |
| gma_write_acpi_tables(struct device *const dev, unsigned long current, |
| struct acpi_rsdp *const rsdp) |
| { |
| igd_opregion_t *opregion = (igd_opregion_t *)current; |
| global_nvs_t *gnvs; |
| |
| if (intel_gma_init_igd_opregion(opregion) != CB_SUCCESS) |
| return current; |
| |
| current += sizeof(igd_opregion_t); |
| |
| /* GNVS has been already set up */ |
| gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS); |
| if (gnvs) { |
| /* IGD OpRegion Base Address */ |
| gma_set_gnvs_aslb(gnvs, (uintptr_t)opregion); |
| } else { |
| printk(BIOS_ERR, "Error: GNVS table not found.\n"); |
| } |
| |
| current = acpi_align_current(current); |
| return current; |
| } |
| |
| static void gma_generate_ssdt(struct device *dev) |
| { |
| const struct soc_intel_broadwell_config *chip = dev->chip_info; |
| |
| drivers_intel_gma_displays_ssdt_generate(&chip->gfx); |
| } |
| |
| static struct device_operations igd_ops = { |
| .read_resources = &pci_dev_read_resources, |
| .set_resources = &pci_dev_set_resources, |
| .enable_resources = &pci_dev_enable_resources, |
| .init = &igd_init, |
| .ops_pci = &broadwell_pci_ops, |
| .write_acpi_tables = gma_write_acpi_tables, |
| .acpi_fill_ssdt = gma_generate_ssdt, |
| }; |
| |
| static const unsigned short pci_device_ids[] = { |
| IGD_HASWELL_ULT_GT1, |
| IGD_HASWELL_ULT_GT2, |
| IGD_HASWELL_ULT_GT3, |
| IGD_BROADWELL_U_GT1, |
| IGD_BROADWELL_U_GT2, |
| IGD_BROADWELL_U_GT3_15W, |
| IGD_BROADWELL_U_GT3_28W, |
| IGD_BROADWELL_Y_GT2, |
| IGD_BROADWELL_H_GT2, |
| IGD_BROADWELL_H_GT3, |
| 0, |
| }; |
| |
| static const struct pci_driver igd_driver __pci_driver = { |
| .ops = &igd_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .devices = pci_device_ids, |
| }; |