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-rw-r--r--src/northbridge/intel/sandybridge/Kconfig4
-rw-r--r--src/northbridge/intel/sandybridge/Makefile.inc1
-rw-r--r--src/northbridge/intel/sandybridge/gma_sandybridge_lvds.c558
3 files changed, 563 insertions, 0 deletions
diff --git a/src/northbridge/intel/sandybridge/Kconfig b/src/northbridge/intel/sandybridge/Kconfig
index cccc09ed72..79767213f8 100644
--- a/src/northbridge/intel/sandybridge/Kconfig
+++ b/src/northbridge/intel/sandybridge/Kconfig
@@ -55,6 +55,10 @@ config IVYBRIDGE_LVDS
bool
default n
+config SANDYBRIDGE_LVDS
+ bool
+ default n
+
config MRC_CACHE_SIZE
hex
depends on !CHROMEOS
diff --git a/src/northbridge/intel/sandybridge/Makefile.inc b/src/northbridge/intel/sandybridge/Makefile.inc
index 532a970524..de31288cf7 100644
--- a/src/northbridge/intel/sandybridge/Makefile.inc
+++ b/src/northbridge/intel/sandybridge/Makefile.inc
@@ -21,6 +21,7 @@ ramstage-y += ram_calc.c
ramstage-y += northbridge.c
ramstage-y += gma.c
ramstage-$(CONFIG_IVYBRIDGE_LVDS) += gma_ivybridge_lvds.c
+ramstage-$(CONFIG_SANDYBRIDGE_LVDS) += gma_sandybridge_lvds.c
ramstage-$(CONFIG_GENERATE_ACPI_TABLES) += acpi.c
ramstage-y += mrccache.c
diff --git a/src/northbridge/intel/sandybridge/gma_sandybridge_lvds.c b/src/northbridge/intel/sandybridge/gma_sandybridge_lvds.c
new file mode 100644
index 0000000000..77c5b6f5fc
--- /dev/null
+++ b/src/northbridge/intel/sandybridge/gma_sandybridge_lvds.c
@@ -0,0 +1,558 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013, 2014 Vladimir Serbinenko
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 or (at your option)
+ * any later version of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <arch/io.h>
+#include <console/console.h>
+#include <delay.h>
+#include <device/device.h>
+#include <string.h>
+
+#include <drivers/intel/gma/edid.h>
+#include <drivers/intel/gma/i915.h>
+#include <drivers/intel/gma/intel_bios.h>
+#include "gma.h"
+#include "chip.h"
+#include <pc80/vga.h>
+#include <pc80/vga_io.h>
+#include <device/pci_def.h>
+#include <device/pci_rom.h>
+
+#if IS_ENABLED(CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT)
+
+static size_t generate_vbt(const struct northbridge_intel_sandybridge_config *conf,
+ void *vbt)
+{
+ struct vbt_header *head = vbt;
+ struct bdb_header *bdb_head;
+ struct bdb_general_features *genfeat;
+ u8 *ptr;
+
+ memset(head, 0, sizeof (*head));
+
+ memcpy(head->signature, "$VBT SNB/IVB-MOBILE ", 20);
+ head->version = 100;
+ head->header_size = sizeof (*head);
+ head->bdb_offset = sizeof (*head);
+
+ bdb_head = (struct bdb_header *) (head + 1);
+ memset(bdb_head, 0, sizeof (*bdb_head));
+ memcpy(bdb_head->signature, "BIOS_DATA_BLOCK ", 16);
+ bdb_head->version = 0xa8;
+ bdb_head->header_size = sizeof (*bdb_head);
+
+ ptr = (u8 *) (bdb_head + 1);
+
+ ptr[0] = BDB_GENERAL_FEATURES;
+ ptr[1] = sizeof (*genfeat);
+ ptr[2] = sizeof (*genfeat) >> 8;
+ ptr += 3;
+
+ genfeat = (struct bdb_general_features *) ptr;
+ memset(genfeat, 0, sizeof (*genfeat));
+ genfeat->panel_fitting = 3;
+ genfeat->flexaim = 1;
+ genfeat->download_ext_vbt = 1;
+ genfeat->enable_ssc = conf->gpu_use_spread_spectrum_clock;
+ genfeat->ssc_freq = !conf->gpu_link_frequency_270_mhz;
+ genfeat->rsvd10 = 0x4;
+ genfeat->legacy_monitor_detect = 1;
+ genfeat->int_crt_support = 1;
+ genfeat->dp_ssc_enb = 1;
+
+ ptr += sizeof (*genfeat);
+
+ bdb_head->bdb_size = ptr - (u8 *)bdb_head;
+ head->vbt_size = ptr - (u8 *)head;
+ head->vbt_checksum = 0;
+ return ptr - (u8 *)head;
+}
+
+static void train_link(u32 mmio)
+{
+ /* Clear interrupts. */
+ write32(mmio + DEIIR, 0xffffffff);
+
+ write32(mmio + 0xf000c, 0x2040);
+ write32(mmio + 0xf000c, 0x2050);
+ write32(mmio + 0x60100, 0x44000);
+ write32(mmio + 0xf000c, 0x22050);
+
+ mdelay(1);
+
+ write32(mmio + 0x000f0018, 0x0000008ff);
+ write32(mmio + 0x000f1018, 0x0000008ff);
+
+ write32(mmio + 0x000f000c, 0x001a2050);
+ write32(mmio + 0x00060100, 0x001c4000);
+
+ write32(mmio + 0x00060100, 0x801c4000);
+ write32(mmio + 0x000f000c, 0x801a2050);
+
+ write32(mmio + 0x00060100, 0x801c4000);
+ write32(mmio + 0x000f000c, 0x801a2050);
+ mdelay(1);
+
+ read32(mmio + 0x000f0014); // = 0x00000100
+ write32(mmio + 0x000f0014, 0x00000100);
+ write32(mmio + 0x00060100, 0x901c4000);
+ write32(mmio + 0x000f000c, 0x801a2150);
+ mdelay(1);
+ read32(mmio + 0x000f0014); // = 0x00000600
+}
+
+static void power_port(u32 mmio)
+{
+ read32(mmio + 0x000e1100); // = 0x00000000
+ write32(mmio + 0x000e1100, 0x00000000);
+ write32(mmio + 0x000e1100, 0x00010000);
+ read32(mmio + 0x000e1100); // = 0x00010000
+ read32(mmio + 0x000e1100); // = 0x00010000
+ read32(mmio + 0x000e1100); // = 0x00000000
+ write32(mmio + 0x000e1100, 0x00000000);
+ read32(mmio + 0x000e1100); // = 0x00000000
+ read32(mmio + 0x000e4200); // = 0x0000001c
+ write32(mmio + 0x000e4210, 0x8004003e);
+ write32(mmio + 0x000e4214, 0x80060002);
+ write32(mmio + 0x000e4218, 0x01000000);
+ read32(mmio + 0x000e4210); // = 0x5144003e
+ write32(mmio + 0x000e4210, 0x5344003e);
+ read32(mmio + 0x000e4210); // = 0x0144003e
+ write32(mmio + 0x000e4210, 0x8074003e);
+ read32(mmio + 0x000e4210); // = 0x5144003e
+ read32(mmio + 0x000e4210); // = 0x5144003e
+ write32(mmio + 0x000e4210, 0x5344003e);
+ read32(mmio + 0x000e4210); // = 0x0144003e
+ write32(mmio + 0x000e4210, 0x8074003e);
+ read32(mmio + 0x000e4210); // = 0x5144003e
+ read32(mmio + 0x000e4210); // = 0x5144003e
+ write32(mmio + 0x000e4210, 0x5344003e);
+ read32(mmio + 0x000e4210); // = 0x0144003e
+ write32(mmio + 0x000e4210, 0x8074003e);
+ read32(mmio + 0x000e4210); // = 0x5144003e
+ read32(mmio + 0x000e4210); // = 0x5144003e
+ write32(mmio + 0x000e4210, 0x5344003e);
+ write32(mmio + 0x000e4f00, 0x0100030c);
+ write32(mmio + 0x000e4f04, 0x00b8230c);
+ write32(mmio + 0x000e4f08, 0x06f8930c);
+ write32(mmio + 0x000e4f0c, 0x09f8e38e);
+ write32(mmio + 0x000e4f10, 0x00b8030c);
+ write32(mmio + 0x000e4f14, 0x0b78830c);
+ write32(mmio + 0x000e4f18, 0x0ff8d3cf);
+ write32(mmio + 0x000e4f1c, 0x01e8030c);
+ write32(mmio + 0x000e4f20, 0x0ff863cf);
+ write32(mmio + 0x000e4f24, 0x0ff803cf);
+ write32(mmio + 0x000c4030, 0x00001000);
+ read32(mmio + 0x000c4000); // = 0x00000000
+ write32(mmio + 0x000c4030, 0x00001000);
+ read32(mmio + 0x000e1150); // = 0x0000001c
+ write32(mmio + 0x000e1150, 0x0000089c);
+ write32(mmio + 0x000fcc00, 0x01986f00);
+ write32(mmio + 0x000fcc0c, 0x01986f00);
+ write32(mmio + 0x000fcc18, 0x01986f00);
+ write32(mmio + 0x000fcc24, 0x01986f00);
+ read32(mmio + 0x000c4000); // = 0x00000000
+ read32(mmio + 0x000e1180); // = 0x40000002
+}
+
+int i915lightup_sandy(const struct northbridge_intel_sandybridge_config *info,
+ u32 physbase, u16 piobase, u32 mmio, u32 lfb)
+{
+ int i;
+ u8 edid_data[128];
+ struct edid edid;
+ u32 hactive, vactive, right_border, bottom_border;
+ int hpolarity, vpolarity;
+ u32 vsync, hsync, vblank, hblank, hfront_porch, vfront_porch;
+ 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 link_frequency = info->gpu_link_frequency_270_mhz ? 270000 : 162000;
+ u32 data_m1;
+ u32 data_n1 = 0x00800000;
+ u32 link_m1;
+ u32 link_n1 = 0x00080000;
+
+ write32(mmio + 0x00070080, 0x00000000);
+ write32(mmio + DSPCNTR(0), 0x00000000);
+ write32(mmio + 0x00071180, 0x00000000);
+ write32(mmio + CPU_VGACNTRL, 0x0000298e | VGA_DISP_DISABLE);
+ write32(mmio + 0x0007019c, 0x00000000);
+ write32(mmio + 0x0007119c, 0x00000000);
+ write32(mmio + 0x000ec008, 0x2c010000);
+ write32(mmio + 0x000ec020, 0x2c010000);
+ write32(mmio + 0x000ec038, 0x2c010000);
+ write32(mmio + 0x000ec050, 0x2c010000);
+ write32(mmio + 0x000ec408, 0x2c010000);
+ write32(mmio + 0x000ec420, 0x2c010000);
+ write32(mmio + 0x000ec438, 0x2c010000);
+ write32(mmio + 0x000ec450, 0x2c010000);
+ vga_gr_write(0x18, 0);
+ write32(mmio + 0x00042004, 0x02000000);
+ write32(mmio + 0x000fd034, 0x8421ffe0);
+
+ /* Setup GTT. */
+ for (i = 0; i < 0x2000; i++)
+ {
+ outl((i << 2) | 1, piobase);
+ outl(physbase + (i << 12) + 1, piobase + 4);
+ }
+
+ vga_misc_write(0x67);
+
+ const u8 cr[] = { 0x5f, 0x4f, 0x50, 0x82, 0x55, 0x81, 0xbf, 0x1f,
+ 0x00, 0x4f, 0x0d, 0x0e, 0x00, 0x00, 0x00, 0x00,
+ 0x9c, 0x8e, 0x8f, 0x28, 0x1f, 0x96, 0xb9, 0xa3,
+ 0xff
+ };
+ vga_cr_write(0x11, 0);
+
+ for (i = 0; i <= 0x18; i++)
+ vga_cr_write(i, cr[i]);
+
+ power_port(mmio);
+
+ intel_gmbus_read_edid(mmio + PCH_GMBUS0, 3, 0x50, edid_data, 128);
+ decode_edid(edid_data,
+ sizeof(edid_data), &edid);
+
+ /* Disable screen memory to prevent garbage from appearing. */
+ vga_sr_write(1, vga_sr_read(1) | 0x20);
+
+ hactive = edid.x_resolution;
+ vactive = edid.y_resolution;
+ right_border = edid.hborder;
+ bottom_border = edid.vborder;
+ hpolarity = (edid.phsync == '-');
+ vpolarity = (edid.pvsync == '-');
+ vsync = edid.vspw;
+ hsync = edid.hspw;
+ vblank = edid.vbl;
+ hblank = edid.hbl;
+ hfront_porch = edid.hso;
+ vfront_porch = edid.vso;
+
+ target_frequency = info->gpu_lvds_dual_channel ? edid.pixel_clock
+ : (2 * edid.pixel_clock);
+#if !IS_ENABLED(CONFIG_FRAMEBUFFER_KEEP_VESA_MODE)
+ vga_textmode_init();
+#else
+ vga_sr_write(1, 1);
+ vga_sr_write(0x2, 0xf);
+ vga_sr_write(0x3, 0x0);
+ vga_sr_write(0x4, 0xe);
+ vga_gr_write(0, 0x0);
+ vga_gr_write(1, 0x0);
+ vga_gr_write(2, 0x0);
+ vga_gr_write(3, 0x0);
+ vga_gr_write(4, 0x0);
+ vga_gr_write(5, 0x0);
+ vga_gr_write(6, 0x5);
+ vga_gr_write(7, 0xf);
+ vga_gr_write(0x10, 0x1);
+ vga_gr_write(0x11, 0);
+
+
+ edid.bytes_per_line = (edid.bytes_per_line + 63) & ~63;
+
+ write32(mmio + DSPCNTR(0), DISPPLANE_BGRX888);
+ write32(mmio + DSPADDR(0), 0);
+ write32(mmio + DSPSTRIDE(0), edid.bytes_per_line);
+ write32(mmio + DSPSURF(0), 0);
+ for (i = 0; i < 0x100; i++)
+ write32(mmio + LGC_PALETTE(0) + 4 * i, i * 0x010101);
+#endif
+
+ /* 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 + 60000) / 120000;
+
+ if (m < 77 || m > 131)
+ continue;
+
+ cur_frequency = (120000 * 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 0;
+ }
+
+ link_m1 = ((uint64_t)link_n1 * edid.pixel_clock) / link_frequency;
+ data_m1 = ((uint64_t)data_n1 * 18 * edid.pixel_clock)
+ / (link_frequency * 8 * (info->gpu_lvds_num_lanes ? : 4));
+
+ 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, (info->gpu_use_spread_spectrum_clock
+ ? "Spread spectrum clock\n" : "DREF clock\n"));
+ printk(BIOS_DEBUG,
+ info->gpu_lvds_dual_channel ? "Dual channel\n" : "Single channel\n");
+ printk(BIOS_DEBUG, "Polarities %d, %d\n",
+ hpolarity, vpolarity);
+ printk(BIOS_DEBUG, "Data M1=%d, N1=%d\n",
+ data_m1, data_n1);
+ printk(BIOS_DEBUG, "Link frequency %d kHz\n",
+ link_frequency);
+ printk(BIOS_DEBUG, "Link M1=%d, N1=%d\n",
+ link_m1, link_n1);
+ 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",
+ 120000 * (5 * pixel_m1 + pixel_m2) / pixel_n
+ / (pixel_p1 * 7));
+
+ write32(mmio + PCH_LVDS,
+ (hpolarity << 20) | (vpolarity << 21)
+ | (info->gpu_lvds_dual_channel ? LVDS_CLOCK_B_POWERUP_ALL
+ | LVDS_CLOCK_BOTH_POWERUP_ALL : 0)
+ | LVDS_BORDER_ENABLE | LVDS_CLOCK_A_POWERUP_ALL
+ | LVDS_DETECTED);
+ write32(mmio + BLC_PWM_CPU_CTL2, (1 << 31));
+ write32(mmio + PCH_DREF_CONTROL, (info->gpu_use_spread_spectrum_clock
+ ? 0x1002 : 0x400));
+ mdelay(1);
+ write32(mmio + PCH_PP_CONTROL, PANEL_UNLOCK_REGS
+ | (read32(mmio + PCH_PP_CONTROL) & ~PANEL_UNLOCK_MASK));
+ write32(mmio + _PCH_FP0(0),
+ ((pixel_n - 2) << 16)
+ | ((pixel_m1 - 2) << 8) | pixel_m2);
+ write32(mmio + PCH_DPLL_SEL, 8);
+ write32(mmio + _PCH_DPLL(0),
+ DPLL_VCO_ENABLE | DPLLB_MODE_LVDS
+ | (info->gpu_lvds_dual_channel ? DPLLB_LVDS_P2_CLOCK_DIV_7
+ : DPLLB_LVDS_P2_CLOCK_DIV_14)
+ | (0x10000 << (pixel_p1 - 1))
+ | ((info->gpu_use_spread_spectrum_clock ? 3 : 0) << 13)
+ | (0x1 << (pixel_p1 - 1)));
+ mdelay(1);
+ write32(mmio + _PCH_DPLL(0),
+ DPLL_VCO_ENABLE | DPLLB_MODE_LVDS
+ | (info->gpu_lvds_dual_channel ? DPLLB_LVDS_P2_CLOCK_DIV_7
+ : DPLLB_LVDS_P2_CLOCK_DIV_14)
+ | (0x10000 << (pixel_p1 - 1))
+ | ((info->gpu_use_spread_spectrum_clock ? 3 : 0) << 13)
+ | (0x1 << (pixel_p1 - 1)));
+ /* Re-lock the registers. */
+ write32(mmio + PCH_PP_CONTROL,
+ (read32(mmio + PCH_PP_CONTROL) & ~PANEL_UNLOCK_MASK));
+
+ write32(mmio + PCH_LVDS,
+ (hpolarity << 20) | (vpolarity << 21)
+ | (info->gpu_lvds_dual_channel ? LVDS_CLOCK_B_POWERUP_ALL
+ | LVDS_CLOCK_BOTH_POWERUP_ALL : 0)
+ | LVDS_BORDER_ENABLE | LVDS_CLOCK_A_POWERUP_ALL
+ | LVDS_DETECTED);
+
+ write32(mmio + HTOTAL(0),
+ ((hactive + right_border + hblank - 1) << 16)
+ | (hactive - 1));
+ write32(mmio + HBLANK(0),
+ ((hactive + right_border + hblank - 1) << 16)
+ | (hactive + right_border - 1));
+ write32(mmio + HSYNC(0),
+ ((hactive + right_border + hfront_porch + hsync - 1) << 16)
+ | (hactive + right_border + hfront_porch - 1));
+
+ write32(mmio + VTOTAL(0), ((vactive + bottom_border + vblank - 1) << 16)
+ | (vactive - 1));
+ write32(mmio + VBLANK(0), ((vactive + bottom_border + vblank - 1) << 16)
+ | (vactive + bottom_border - 1));
+ write32(mmio + VSYNC(0),
+ (vactive + bottom_border + vfront_porch + vsync - 1)
+ | (vactive + bottom_border + vfront_porch - 1));
+
+ write32(mmio + PIPECONF(0), PIPECONF_DISABLE);
+
+ write32(mmio + PF_WIN_POS(0), 0);
+#if IS_ENABLED(CONFIG_FRAMEBUFFER_KEEP_VESA_MODE)
+ write32(mmio + PIPESRC(0), ((hactive - 1) << 16) | (vactive - 1));
+ write32(mmio + PF_CTL(0),0);
+ write32(mmio + PF_WIN_SZ(0), 0);
+#else
+ write32(mmio + PIPESRC(0), (639 << 16) | 399);
+ write32(mmio + PF_CTL(0),PF_ENABLE | PF_FILTER_MED_3x3);
+ write32(mmio + PF_WIN_SZ(0), vactive | (hactive << 16));
+#endif
+
+ mdelay(1);
+
+ write32(mmio + PIPE_DATA_M1(0), 0x7e000000 | data_m1);
+ write32(mmio + PIPE_DATA_N1(0), data_n1);
+ write32(mmio + PIPE_LINK_M1(0), link_m1);
+ write32(mmio + PIPE_LINK_N1(0), link_n1);
+
+ write32(mmio + 0x000f000c, 0x00002040);
+ mdelay(1);
+ write32(mmio + 0x000f000c, 0x00002050);
+ write32(mmio + 0x00060100, 0x00044000);
+ mdelay(1);
+ write32(mmio + PIPECONF(0), PIPECONF_BPP_6);
+ write32(mmio + 0x000f000c, 0x00022050);
+ write32(mmio + PIPECONF(0), PIPECONF_BPP_6 | PIPECONF_DITHER_EN);
+ write32(mmio + PIPECONF(0), PIPECONF_ENABLE | PIPECONF_BPP_6 | PIPECONF_DITHER_EN);
+
+#if IS_ENABLED(CONFIG_FRAMEBUFFER_KEEP_VESA_MODE)
+ write32(mmio + CPU_VGACNTRL, 0x20298e | VGA_DISP_DISABLE);
+#else
+ write32(mmio + CPU_VGACNTRL, 0x20298e);
+#endif
+ train_link(mmio);
+
+#if IS_ENABLED(CONFIG_FRAMEBUFFER_KEEP_VESA_MODE)
+ write32(mmio + DSPCNTR(0), DISPLAY_PLANE_ENABLE | DISPPLANE_BGRX888);
+ mdelay(1);
+#endif
+
+ write32(mmio + TRANS_HTOTAL(0),
+ ((hactive + right_border + hblank - 1) << 16)
+ | (hactive - 1));
+ write32(mmio + TRANS_HBLANK(0),
+ ((hactive + right_border + hblank - 1) << 16)
+ | (hactive + right_border - 1));
+ write32(mmio + TRANS_HSYNC(0),
+ ((hactive + right_border + hfront_porch + hsync - 1) << 16)
+ | (hactive + right_border + hfront_porch - 1));
+
+ write32(mmio + TRANS_VTOTAL(0),
+ ((vactive + bottom_border + vblank - 1) << 16)
+ | (vactive - 1));
+ write32(mmio + TRANS_VBLANK(0),
+ ((vactive + bottom_border + vblank - 1) << 16)
+ | (vactive + bottom_border - 1));
+ write32(mmio + TRANS_VSYNC(0),
+ (vactive + bottom_border + vfront_porch + vsync - 1)
+ | (vactive + bottom_border + vfront_porch - 1));
+
+ write32(mmio + 0x00060100, 0xb01c4000);
+ write32(mmio + 0x000f000c, 0x801a2350);
+ mdelay(1);
+ write32(mmio + TRANSCONF(0), TRANS_ENABLE | TRANS_6BPC
+#if IS_ENABLED(CONFIG_FRAMEBUFFER_KEEP_VESA_MODE)
+ | TRANS_STATE_MASK
+#endif
+ );
+
+ write32(mmio + PCH_LVDS,
+ LVDS_PORT_ENABLE
+ | (hpolarity << 20) | (vpolarity << 21)
+ | (info->gpu_lvds_dual_channel ? LVDS_CLOCK_B_POWERUP_ALL
+ | LVDS_CLOCK_BOTH_POWERUP_ALL : 0)
+ | LVDS_BORDER_ENABLE | LVDS_CLOCK_A_POWERUP_ALL
+ | LVDS_DETECTED);
+
+ write32(mmio + PCH_PP_CONTROL, PANEL_UNLOCK_REGS | PANEL_POWER_OFF);
+ write32(mmio + PCH_PP_CONTROL, PANEL_UNLOCK_REGS | PANEL_POWER_RESET);
+ mdelay(1);
+ write32(mmio + PCH_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(mmio + PCH_PP_STATUS);
+ if (((reg32 >> 28) & 3) == 0)
+ break;
+ }
+ printk (BIOS_DEBUG, "panel powered up\n");
+
+ write32(mmio + PCH_PP_CONTROL, PANEL_POWER_ON | PANEL_POWER_RESET);
+
+ /* Enable screen memory. */
+ vga_sr_write(1, vga_sr_read(1) & ~0x20);
+
+ /* Clear interrupts. */
+ write32(mmio + DEIIR, 0xffffffff);
+ write32(mmio + SDEIIR, 0xffffffff);
+
+#if IS_ENABLED(CONFIG_FRAMEBUFFER_KEEP_VESA_MODE)
+ memset ((void *) lfb, 0, edid.x_resolution * edid.y_resolution * 4);
+ set_vbe_mode_info_valid(&edid, lfb);
+#endif
+
+ /* Linux relies on VBT for panel info. */
+ optionrom_header_t *oh = (void *)PCI_VGA_RAM_IMAGE_START;
+ optionrom_pcir_t *pcir;
+ size_t vbt_size;
+ size_t fake_oprom_size;
+ struct device *dev;
+
+ dev = dev_find_slot(0, PCI_DEVFN(2, 0));
+
+ memset(oh, 0, 8192);
+
+ oh->signature = OPROM_SIGNATURE;
+ oh->pcir_offset = 0x40;
+ oh->vbt_offset = 0x80;
+
+ pcir = (void *)(PCI_VGA_RAM_IMAGE_START + 0x40);
+ pcir->signature = 0x52494350; // PCIR
+ pcir->vendor = dev->vendor;
+ pcir->device = dev->device;
+ pcir->length = sizeof(*pcir);
+ pcir->revision = dev->class;
+ pcir->classcode[0] = dev->class >> 8;
+ pcir->classcode[1] = dev->class >> 16;
+ pcir->classcode[2] = dev->class >> 24;
+ pcir->indicator = 0x80;
+
+ vbt_size = generate_vbt (info, (void *)(PCI_VGA_RAM_IMAGE_START + 0x80));
+ fake_oprom_size = (0x80 + vbt_size + 511) / 512;
+ oh->size = fake_oprom_size;
+ pcir->imagelength = fake_oprom_size;
+
+ return 1;
+}
+
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 14:08:36 +0000