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Diffstat (limited to 'docs/resources/misc/dumps/5320_7c0000_gma.c')
| -rw-r--r-- | docs/resources/misc/dumps/5320_7c0000_gma.c | 519 |
1 files changed, 519 insertions, 0 deletions
diff --git a/docs/resources/misc/dumps/5320_7c0000_gma.c b/docs/resources/misc/dumps/5320_7c0000_gma.c new file mode 100644 index 00000000..04a70dca --- /dev/null +++ b/docs/resources/misc/dumps/5320_7c0000_gma.c @@ -0,0 +1,519 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/console.h> +#include <bootmode.h> +#include <delay.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <pc80/mc146818rtc.h> +#include "i945.h" +#include "chip.h" +#include <edid.h> +#include <drivers/intel/gma/edid.h> +#include <drivers/intel/gma/i915.h> +#include <string.h> + +#define GDRST 0xc0 + +#define LVDS_CLOCK_A_POWERUP_ALL (3 << 8) +#define LVDS_CLOCK_B_POWERUP_ALL (3 << 4) +#define LVDS_CLOCK_BOTH_POWERUP_ALL (3 << 2) +#define DISPPLANE_BGRX888 (0x6<<26) +#define DPLLB_LVDS_P2_CLOCK_DIV_7 (1 << 24) /* i915 */ + +#define DPLL_INTEGRATED_CRI_CLK_VLV (1<<14) + +#define PGETBL_CTL 0x2020 +#define PGETBL_ENABLED 0x00000001 + +#define BASE_FREQUENCY 120000 + +#if CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT + +static int gtt_setup(unsigned int mmiobase) +{ + unsigned long PGETBL_save; + + PGETBL_save = read32(mmiobase + PGETBL_CTL) & ~PGETBL_ENABLED; + PGETBL_save |= PGETBL_ENABLED; + + PGETBL_save |= pci_read_config32(dev_find_slot(0, PCI_DEVFN(2,0)), 0x5c) & 0xfffff000; + PGETBL_save |= 2; /* set GTT to 256kb */ + + // hack!!! + PGETBL_save += 0x7c0000; // ugly hack. from 5927/3. Must calculate it properly! + /// hack!!! + + write32(mmiobase + GFX_FLSH_CNTL, 0); + + write32(mmiobase + PGETBL_CTL, PGETBL_save); + + /* verify */ +/* // old + if (read32(mmiobase + PGETBL_CTL) & PGETBL_ENABLED) { + printk(BIOS_DEBUG, "gtt_setup is enabled.\n"); +*/ + // Hack. Must do properly later: + PGETBL_save = read32(mmiobase + PGETBL_CTL); + if (PGETBL_save & PGETBL_ENABLED) { + printk(BIOS_DEBUG, "gtt_setup is enabled: GTT PGETLB_CTL register: 0x%lx\n", PGETBL_save); + // end hack + } else { + printk(BIOS_DEBUG, "gtt_setup failed!!!\n"); + return 1; + } + write32(mmiobase + GFX_FLSH_CNTL, 0); + + return 0; +} + +static int intel_gma_init(struct northbridge_intel_i945_config *conf, + unsigned int pphysbase, unsigned int piobase, + unsigned int pmmio, unsigned int pgfx) +{ + struct edid edid; + u8 edid_data[128]; + unsigned long temp; + int hpolarity, vpolarity; + u32 candp1, candn; + u32 best_delta = 0xffffffff; + u32 target_frequency; + u32 pixel_p1 = 1; + u32 pixel_n = 1; + u32 pixel_m1 = 1; + u32 pixel_m2 = 1; + u32 hactive, vactive, right_border, bottom_border; + u32 vsync, hsync, vblank, hblank, hfront_porch, vfront_porch; + u32 i, j; + + pphysbase += 0x20000; + + printk(BIOS_SPEW, + "i915lightup: graphics %p mmio %08x addrport %04x physbase %08x\n", + (void *)pgfx, pmmio, piobase, pphysbase); + + intel_gmbus_read_edid(pmmio + GMBUS0, 3, 0x50, edid_data, 128); + decode_edid(edid_data, sizeof(edid_data), &edid); + + hpolarity = (edid.phsync == '-'); + vpolarity = (edid.pvsync == '-'); + hactive = edid.x_resolution; + vactive = edid.y_resolution; + right_border = edid.hborder; + bottom_border = edid.vborder; + vblank = edid.vbl; + hblank = edid.hbl; + vsync = edid.vspw; + hsync = edid.hspw; + hfront_porch = edid.hso; + vfront_porch = edid.vso; + + for (i = 0; i < 2; i++) + for (j = 0; j < 0x100; j++) + /* R=j, G=j, B=j. */ + write32(pmmio + PALETTE(i) + 4 * j, 0x10101 * j); + + write32(pmmio + PCH_PP_CONTROL, PANEL_UNLOCK_REGS + | (read32(pmmio + PCH_PP_CONTROL) & ~PANEL_UNLOCK_MASK)); + + write32(pmmio + MI_ARB_STATE, MI_ARB_C3_LP_WRITE_ENABLE | (1 << 27)); + /* Clean registers. */ + for (i = 0; i < 0x20; i += 4) + write32(pmmio + RENDER_RING_BASE + i, 0); + for (i = 0; i < 0x20; i += 4) + write32(pmmio + FENCE_REG_965_0 + i, 0); + write32(pmmio + PP_ON_DELAYS, 0); + write32(pmmio + PP_OFF_DELAYS, 0); + + /* Disable VGA. */ + write32(pmmio + VGACNTRL, VGA_DISP_DISABLE); + + /* Disable pipes. */ + write32(pmmio + PIPECONF(0), 0); + write32(pmmio + PIPECONF(1), 0); + + /* Init PRB0. */ + write32(pmmio + HWS_PGA, 0x352d2000); + write32(pmmio + PRB0_CTL, 0); + write32(pmmio + PRB0_HEAD, 0); + write32(pmmio + PRB0_TAIL, 0); + write32(pmmio + PRB0_START, 0); + write32(pmmio + PRB0_CTL, 0x0001f001); + + write32(pmmio + D_STATE, DSTATE_PLL_D3_OFF + | DSTATE_GFX_CLOCK_GATING | DSTATE_DOT_CLOCK_GATING); + write32(pmmio + ECOSKPD, 0x00010000); + write32(pmmio + HWSTAM, 0xeffe); + write32(pmmio + PORT_HOTPLUG_EN, conf->gpu_hotplug); + write32(pmmio + INSTPM, 0x08000000 | INSTPM_AGPBUSY_DIS); + + target_frequency = conf->gpu_lvds_is_dual_channel ? edid.pixel_clock + : (2 * edid.pixel_clock); + + /* Find suitable divisors. */ + for (candp1 = 1; candp1 <= 8; candp1++) { + for (candn = 5; candn <= 10; candn++) { + u32 cur_frequency; + u32 m; /* 77 - 131. */ + u32 denom; /* 35 - 560. */ + u32 current_delta; + + denom = candn * candp1 * 7; + /* Doesnt overflow for up to + 5000000 kHz = 5 GHz. */ + m = (target_frequency * denom + + BASE_FREQUENCY / 2) / BASE_FREQUENCY; + + if (m < 77 || m > 131) + continue; + + cur_frequency = (BASE_FREQUENCY * m) / denom; + if (target_frequency > cur_frequency) + current_delta = target_frequency - cur_frequency; + else + current_delta = cur_frequency - target_frequency; + + if (best_delta > current_delta) { + best_delta = current_delta; + pixel_n = candn; + pixel_p1 = candp1; + pixel_m2 = ((m + 3) % 5) + 7; + pixel_m1 = (m - pixel_m2) / 5; + } + } + } + + if (best_delta == 0xffffffff) { + printk (BIOS_ERR, "Couldn't find GFX clock divisors\n"); + return -1; + } + + printk(BIOS_INFO, "bringing up panel at resolution %d x %d\n", + hactive, vactive); + printk(BIOS_DEBUG, "Borders %d x %d\n", right_border, bottom_border); + printk(BIOS_DEBUG, "Blank %d x %d\n", hblank, vblank); + printk(BIOS_DEBUG, "Sync %d x %d\n", hsync, vsync); + printk(BIOS_DEBUG, "Front porch %d x %d\n", hfront_porch, vfront_porch); + printk(BIOS_DEBUG, (conf->gpu_lvds_use_spread_spectrum_clock + ? "Spread spectrum clock\n" + : "DREF clock\n")); + printk(BIOS_DEBUG, (conf->gpu_lvds_is_dual_channel + ? "Dual channel\n" + : "Single channel\n")); + printk(BIOS_DEBUG, "Polarities %d, %d\n", + hpolarity, vpolarity); + printk(BIOS_DEBUG, "Pixel N=%d, M1=%d, M2=%d, P1=%d\n", + pixel_n, pixel_m1, pixel_m2, pixel_p1); + printk(BIOS_DEBUG, "Pixel clock %d kHz\n", + BASE_FREQUENCY * (5 * pixel_m1 + pixel_m2) / pixel_n + / (pixel_p1 * 7)); + + write32(pmmio + DSPCNTR(0), DISPPLANE_BGRX888 + | DISPPLANE_SEL_PIPE_B | DISPPLANE_GAMMA_ENABLE); + + mdelay(1); + write32(pmmio + PP_CONTROL, PANEL_UNLOCK_REGS + | (read32(pmmio + PP_CONTROL) & ~PANEL_UNLOCK_MASK)); + write32(pmmio + FP0(1), + ((pixel_n - 2) << 16) + | ((pixel_m1 - 2) << 8) | pixel_m2); + write32(pmmio + DPLL(1), + DPLL_VGA_MODE_DIS | + DPLL_VCO_ENABLE | DPLLB_MODE_LVDS + | (conf->gpu_lvds_is_dual_channel ? DPLLB_LVDS_P2_CLOCK_DIV_7 + : DPLLB_LVDS_P2_CLOCK_DIV_14) + | (conf->gpu_lvds_use_spread_spectrum_clock + ? DPLL_INTEGRATED_CLOCK_VLV | DPLL_INTEGRATED_CRI_CLK_VLV + : 0) + | (pixel_p1 << 16) + | (pixel_p1)); + mdelay(1); + write32(pmmio + DPLL(1), + DPLL_VGA_MODE_DIS | + DPLL_VCO_ENABLE | DPLLB_MODE_LVDS + | (conf->gpu_lvds_is_dual_channel ? DPLLB_LVDS_P2_CLOCK_DIV_7 + : DPLLB_LVDS_P2_CLOCK_DIV_14) + | ((conf->gpu_lvds_use_spread_spectrum_clock ? 3 : 0) << 13) + | (pixel_p1 << 16) + | (pixel_p1)); + mdelay(1); + write32(pmmio + HTOTAL(1), + ((hactive + right_border + hblank - 1) << 16) + | (hactive - 1)); + write32(pmmio + HBLANK(1), + ((hactive + right_border + hblank - 1) << 16) + | (hactive + right_border - 1)); + write32(pmmio + HSYNC(1), + ((hactive + right_border + hfront_porch + hsync - 1) << 16) + | (hactive + right_border + hfront_porch - 1)); + + write32(pmmio + VTOTAL(1), ((vactive + bottom_border + vblank - 1) << 16) + | (vactive - 1)); + write32(pmmio + VBLANK(1), ((vactive + bottom_border + vblank - 1) << 16) + | (vactive + bottom_border - 1)); + write32(pmmio + VSYNC(1), + (vactive + bottom_border + vfront_porch + vsync - 1) + | (vactive + bottom_border + vfront_porch - 1)); + + write32(pmmio + PIPESRC(1), ((hactive - 1) << 16) | (vactive - 1)); + + /* Disable panel fitter (we're in native resolution). */ + write32(pmmio + PF_CTL(0), 0); + write32(pmmio + PF_WIN_SZ(0), 0); + write32(pmmio + PF_WIN_POS(0), 0); + write32(pmmio + PFIT_PGM_RATIOS, 0); + write32(pmmio + PFIT_CONTROL, 0); + + mdelay(1); + + write32(pmmio + DSPSIZE(0), (hactive - 1) | ((vactive - 1) << 16)); + write32(pmmio + DSPPOS(0), 0); + + /* Backlight init. */ + write32(pmmio + FW_BLC_SELF, FW_BLC_SELF_EN_MASK); + write32(pmmio + FW_BLC, 0x011d011a); + write32(pmmio + FW_BLC2, 0x00000102); + write32(pmmio + FW_BLC_SELF, FW_BLC_SELF_EN_MASK); + write32(pmmio + FW_BLC_SELF, 0x0001003f); + write32(pmmio + FW_BLC, 0x011d0109); + write32(pmmio + FW_BLC2, 0x00000102); + write32(pmmio + FW_BLC_SELF, FW_BLC_SELF_EN_MASK); + write32(pmmio + BLC_PWM_CTL, conf->gpu_backlight); + + edid.bytes_per_line = (edid.bytes_per_line + 63) & ~63; + write32(pmmio + DSPADDR(0), 0); + write32(pmmio + DSPSURF(0), 0); + write32(pmmio + DSPSTRIDE(0), edid.bytes_per_line); + write32(pmmio + DSPCNTR(0), DISPLAY_PLANE_ENABLE | DISPPLANE_BGRX888 + | DISPPLANE_SEL_PIPE_B | DISPPLANE_GAMMA_ENABLE); + mdelay(1); + + write32(pmmio + PIPECONF(1), PIPECONF_ENABLE); + write32(pmmio + LVDS, LVDS_ON + | (hpolarity << 20) | (vpolarity << 21) + | (conf->gpu_lvds_is_dual_channel ? LVDS_CLOCK_B_POWERUP_ALL + | LVDS_CLOCK_BOTH_POWERUP_ALL : 0) + | LVDS_CLOCK_A_POWERUP_ALL + | LVDS_PIPE(1)); + + write32(pmmio + PP_CONTROL, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); + write32(pmmio + PP_CONTROL, PANEL_UNLOCK_REGS | PANEL_POWER_RESET); + mdelay(1); + write32(pmmio + PP_CONTROL, PANEL_UNLOCK_REGS + | PANEL_POWER_ON | PANEL_POWER_RESET); + + printk (BIOS_DEBUG, "waiting for panel powerup\n"); + while (1) { + u32 reg32; + reg32 = read32(pmmio + PP_STATUS); + if ((reg32 & PP_SEQUENCE_MASK) == PP_SEQUENCE_NONE) + break; + } + printk (BIOS_DEBUG, "panel powered up\n"); + + write32(pmmio + PP_CONTROL, PANEL_POWER_ON | PANEL_POWER_RESET); + + /* Clear interrupts. */ + write32(pmmio + DEIIR, 0xffffffff); + write32(pmmio + SDEIIR, 0xffffffff); + write32(pmmio + IIR, 0xffffffff); + write32(pmmio + IMR, 0xffffffff); + write32(pmmio + EIR, 0xffffffff); + + /* GTT is the Global Translation Table for the graphics pipeline. + * It is used to translate graphics addresses to physical + * memory addresses. As in the CPU, GTTs map 4K pages. + * There are 32 bits per pixel, or 4 bytes, + * which means 1024 pixels per page. + * There are 4250 GTTs on Link: + * 2650 (X) * 1700 (Y) pixels / 1024 pixels per page. + * The setgtt function adds a further bit of flexibility: + * it allows you to set a range (the first two parameters) to point + * to a physical address (third parameter);the physical address is + * incremented by a count (fourth parameter) for each GTT in the + * range. + * Why do it this way? For ultrafast startup, + * we can point all the GTT entries to point to one page, + * and set that page to 0s: + * memset(physbase, 0, 4096); + * setgtt(0, 4250, physbase, 0); + * this takes about 2 ms, and is a win because zeroing + * the page takes a up to 200 ms. We will be exploiting this + * trick in a later rev of this code. + * This call sets the GTT to point to a linear range of pages + * starting at physbase. + */ + + if (gtt_setup(pmmio)) { + printk(BIOS_ERR, "ERROR: GTT Setup Failed!!!\n"); + return 0; + } + + /* Setup GTT. */ + for (i = 0; i < 0x2000; i++) + { + outl((i << 2) | 1, piobase); + outl(pphysbase + (i << 12) + 1, piobase + 4); + } + + temp = read32(pmmio + PGETBL_CTL); + printk(BIOS_INFO, "GTT PGETBL_CTL register: 0x%lx\n", temp); + + if (temp & 1) + printk(BIOS_INFO, "GTT Enabled\n"); + else + printk(BIOS_ERR, "ERROR: GTT is still Disabled!!!\n"); + + printk(BIOS_SPEW, "memset %p to 0x00 for %d bytes\n", + (void *)pgfx, hactive * vactive * 4); + memset((void *)pgfx, 0x00, hactive * vactive * 4); + + set_vbe_mode_info_valid(&edid, pgfx); + + return 0; +} +#endif + +static void gma_func0_init(struct device *dev) +{ + u32 reg32; + + /* Unconditionally reset graphics */ + pci_write_config8(dev, GDRST, 1); + udelay(50); + pci_write_config8(dev, GDRST, 0); + /* wait for device to finish */ + while (pci_read_config8(dev, GDRST) & 1) { }; + + /* IGD needs to be Bus Master */ + reg32 = pci_read_config32(dev, PCI_COMMAND); + pci_write_config32(dev, PCI_COMMAND, reg32 | PCI_COMMAND_MASTER + | PCI_COMMAND_IO | PCI_COMMAND_MEMORY); + +#if !CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT + /* PCI Init, will run VBIOS */ + pci_dev_init(dev); +#endif + + +#if CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT + /* This should probably run before post VBIOS init. */ + printk(BIOS_SPEW, "Initializing VGA without OPROM.\n"); + u32 iobase, mmiobase, graphics_base; + struct northbridge_intel_i945_config *conf = dev->chip_info; + + iobase = dev->resource_list[1].base; + mmiobase = dev->resource_list[0].base; + graphics_base = dev->resource_list[2].base; + + printk(BIOS_SPEW, "GMADR=0x%08x GTTADR=0x%08x\n", + pci_read_config32(dev, 0x18), + pci_read_config32(dev, 0x1c) + ); + + int err; + err = intel_gma_init(conf, pci_read_config32(dev, 0x5c) & ~0xf, + iobase, mmiobase, graphics_base); + if (err == 0) + gfx_set_init_done(1); +#endif +} + +/* This doesn't reclaim stolen UMA memory, but IGD could still + be reenabled later. */ +static void gma_func0_disable(struct device *dev) +{ + struct device *dev_host = dev_find_slot(0, PCI_DEVFN(0x0, 0)); + + pci_write_config16(dev, GCFC, 0xa00); + pci_write_config16(dev_host, GGC, (1 << 1)); + + unsigned int reg32 = pci_read_config32(dev_host, DEVEN); + reg32 &= ~(DEVEN_D2F0 | DEVEN_D2F1); + pci_write_config32(dev_host, DEVEN, reg32); + + dev->enabled = 0; +} + +static void gma_func1_init(struct device *dev) +{ + u32 reg32; + u8 val; + + /* IGD needs to be Bus Master, also enable IO accesss */ + reg32 = pci_read_config32(dev, PCI_COMMAND); + pci_write_config32(dev, PCI_COMMAND, reg32 | + PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO); + + if (get_option(&val, "tft_brightness") == CB_SUCCESS) + pci_write_config8(dev, 0xf4, val); + else + pci_write_config8(dev, 0xf4, 0xff); +} + +static void gma_set_subsystem(device_t dev, unsigned vendor, unsigned device) +{ + if (!vendor || !device) { + pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, + pci_read_config32(dev, PCI_VENDOR_ID)); + } else { + pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, + ((device & 0xffff) << 16) | (vendor & 0xffff)); + } +} + +static struct pci_operations gma_pci_ops = { + .set_subsystem = gma_set_subsystem, +}; + +static struct device_operations gma_func0_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = gma_func0_init, + .scan_bus = 0, + .enable = 0, + .disable = gma_func0_disable, + .ops_pci = &gma_pci_ops, +}; + + +static struct device_operations gma_func1_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = gma_func1_init, + .scan_bus = 0, + .enable = 0, + .ops_pci = &gma_pci_ops, +}; + +static const struct pci_driver i945_gma_func0_driver __pci_driver = { + .ops = &gma_func0_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = 0x27a2, +}; + +static const struct pci_driver i945_gma_func1_driver __pci_driver = { + .ops = &gma_func1_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = 0x27a6, +}; |