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Diffstat (limited to 'src/mainboard/google/peppy/gma.c')
| -rw-r--r-- | src/mainboard/google/peppy/gma.c | 272 |
1 files changed, 0 insertions, 272 deletions
diff --git a/src/mainboard/google/peppy/gma.c b/src/mainboard/google/peppy/gma.c deleted file mode 100644 index f3470a4a2b..0000000000 --- a/src/mainboard/google/peppy/gma.c +++ /dev/null @@ -1,272 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright 2013 Google Inc. - * - * 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 <types.h> -#include <string.h> -#include <stdlib.h> -#include <device/device.h> -#include <device/device.h> -#include <device/pci_def.h> -#include <device/pci_ops.h> -#include <console/console.h> -#include <delay.h> -#include <pc80/mc146818rtc.h> -#include <arch/acpi.h> -#include <arch/io.h> -#include <arch/interrupt.h> -#include <boot/coreboot_tables.h> -#include <smbios.h> -#include <device/pci.h> -#include <ec/google/chromeec/ec.h> - -#include <cpu/x86/tsc.h> -#include <cpu/x86/cache.h> -#include <cpu/x86/mtrr.h> -#include <cpu/x86/msr.h> -#include <edid.h> -#include <drivers/intel/gma/i915.h> -#include <northbridge/intel/haswell/haswell.h> -#include "mainboard.h" - -/* - * Here is the rough outline of how we bring up the display: - * 1. Upon power-on Sink generates a hot plug detection pulse thru HPD - * 2. Source determines video mode by reading DPCD receiver capability field - * (DPCD 00000h to 0000Dh) including eDP CP capability register (DPCD - * 0000Dh). - * 3. Sink replies DPCD receiver capability field. - * 4. Source starts EDID read thru I2C-over-AUX. - * 5. Sink replies EDID thru I2C-over-AUX. - * 6. Source determines link configuration, such as MAX_LINK_RATE and - * MAX_LANE_COUNT. Source also determines which type of eDP Authentication - * method to use and writes DPCD link configuration field (DPCD 00100h to - * 0010Ah) including eDP configuration set (DPCD 0010Ah). - * 7. Source starts link training. Sink does clock recovery and equalization. - * 8. Source reads DPCD link status field (DPCD 00200h to 0020Bh). - * 9. Sink replies DPCD link status field. If main link is not stable, Source - * repeats Step 7. - * 10. Source sends MSA (Main Stream Attribute) data. Sink extracts video - * parameters and recovers stream clock. - * 11. Source sends video data. - */ - -/* how many bytes do we need for the framebuffer? - * Well, this gets messy. To get an exact answer, we have - * to ask the panel, but we'd rather zero the memory - * and set up the gtt while the panel powers up. So, - * we take a reasonable guess, secure in the knowledge that the - * MRC has to overestimate the number of bytes used. - * 8 MiB is a very safe guess. There may be a better way later, but - * fact is, the initial framebuffer is only very temporary. And taking - * a little long is ok; this is done much faster than the AUX - * channel is ready for IO. - */ -#define FRAME_BUFFER_BYTES (8*MiB) -/* how many 4096-byte pages do we need for the framebuffer? - * There are hard ways to get this, and easy ways: - * there are FRAME_BUFFER_BYTES/4096 pages, since pages are 4096 - * on this chip (and in fact every Intel graphics chip we've seen). - */ -#define FRAME_BUFFER_PAGES (FRAME_BUFFER_BYTES/(4096)) - - -static int i915_init_done = 0; - -/* fill the palette. */ -static void palette(void) -{ - int i; - unsigned long color = 0; - - for(i = 0; i < 256; i++, color += 0x010101){ - gtt_write(_LGC_PALETTE_A + (i << 2),color); - } -} - -void mainboard_train_link(struct intel_dp *intel_dp) -{ - u8 read_val; - u8 link_status[DP_LINK_STATUS_SIZE]; - - gtt_write(DP_TP_CTL(intel_dp->port), - DP_TP_CTL_ENABLE | DP_TP_CTL_ENHANCED_FRAME_ENABLE); - gtt_write(DDI_BUF_CTL_A, - DDI_BUF_CTL_ENABLE| - DDI_A_4_LANES|DDI_PORT_WIDTH_X1|DDI_INIT_DISPLAY_DETECTED|0x80000011); - - intel_dp_get_training_pattern(intel_dp, &read_val); - intel_dp_set_training_pattern(intel_dp, - DP_TRAINING_PATTERN_1 | DP_LINK_QUAL_PATTERN_DISABLE | - DP_SYMBOL_ERROR_COUNT_BOTH); - - intel_dp_set_training_lane0(intel_dp, - DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0); - intel_dp_get_link_status(intel_dp, link_status); - - gtt_write(DP_TP_CTL(intel_dp->port), - DP_TP_CTL_ENABLE | - DP_TP_CTL_ENHANCED_FRAME_ENABLE | DP_TP_CTL_LINK_TRAIN_PAT2); - - intel_dp_get_training_pattern(intel_dp, &read_val); - intel_dp_set_training_pattern(intel_dp, DP_TRAINING_PATTERN_2 | - DP_LINK_QUAL_PATTERN_DISABLE | DP_SYMBOL_ERROR_COUNT_BOTH); - intel_dp_get_link_status(intel_dp, link_status); - intel_dp_get_lane_align_status(intel_dp, &read_val); - intel_dp_get_training_pattern(intel_dp, &read_val); - intel_dp_set_training_pattern(intel_dp, DP_TRAINING_PATTERN_DISABLE | - DP_LINK_QUAL_PATTERN_DISABLE | DP_SYMBOL_ERROR_COUNT_BOTH); -} - -/* This variable controls whether the test_gfx function below puts up - * color bars or not. In previous revs we ifdef'd the test_gfx function out - * but it's handy, especially when using a JTAG debugger - * to be able to enable and disable a test graphics. - */ -int show_test = 0; - -static void test_gfx(struct intel_dp *dp) -{ - int i; - - if (!show_test) - return; - /* This is a sanity test code which fills the screen with two bands -- - green and blue. It is very useful to ensure all the initializations - are made right. Thus, to be used only for testing, not otherwise - */ - - for (i = 0; i < (dp->edid.mode.va - 4); i++) { - u32 *l; - int j; - u32 tcolor = 0x0ff; - for (j = 0; j < (dp->edid.mode.ha-4); j++) { - if (j == (dp->edid.mode.ha/2)) { - tcolor = 0xff00; - } - l = (u32*)(dp->graphics + i * dp->stride + j * sizeof(tcolor)); - memcpy(l,&tcolor,sizeof(tcolor)); - } - } - printk(BIOS_SPEW, "sleep 10\n"); - delay(10); -} - -void mainboard_set_port_clk_dp(struct intel_dp *intel_dp) -{ - u32 ddi_pll_sel = 0; - - switch (intel_dp->link_bw) { - case DP_LINK_BW_1_62: - ddi_pll_sel = PORT_CLK_SEL_LCPLL_810; - break; - case DP_LINK_BW_2_7: - ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350; - break; - case DP_LINK_BW_5_4: - ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700; - break; - default: - printk(BIOS_ERR, "invalid link bw %d\n", intel_dp->link_bw); - return; - } - - gtt_write(PORT_CLK_SEL(intel_dp->port), ddi_pll_sel); -} - -int panel_lightup(struct intel_dp *dp, unsigned int init_fb) -{ - int i; - int edid_ok; - int pixels = FRAME_BUFFER_BYTES/64; - - gtt_write(PCH_PP_CONTROL,0xabcd000f); - delay(1); - - void runio(struct intel_dp *dp); - /* hard codes -- stuff you can only know from the mainboard */ - dp->gen = 8; // This is gen 8 which we believe is Haswell - dp->is_haswell = 1; - dp->DP = 0x2; - dp->pipe = PIPE_A; - dp->port = PORT_A; - dp->plane = PLANE_A; - dp->pipe_bits_per_pixel = 24; - dp->type = INTEL_OUTPUT_EDP; - dp->output_reg = DP_A; - /* observed from YABEL. */ - dp->aux_clock_divider = 0xe1; - dp->precharge = 3; - - /* 1. Normal mode: Set the first page to zero and make - all GTT entries point to the same page - 2. Developer/Recovery mode: Set up a tasteful color - so people know we are alive. */ - if (init_fb || show_test) { - set_translation_table(0, FRAME_BUFFER_PAGES, dp->physbase, - 4096); - memset((void *)dp->graphics, 0x55, FRAME_BUFFER_PAGES*4096); - } else { - set_translation_table(0, FRAME_BUFFER_PAGES, dp->physbase, 0); - memset((void*)dp->graphics, 0, 4096); - } - - dp->address = 0x50; - - if ( !intel_dp_get_dpcd(dp) ) - goto fail; - - intel_dp_i2c_aux_ch(dp, MODE_I2C_WRITE, 0, NULL); - for(dp->edidlen = i = 0; i < sizeof(dp->rawedid); i++){ - if (intel_dp_i2c_aux_ch(dp, MODE_I2C_READ, - 0x50, &dp->rawedid[i]) < 0) - break; - dp->edidlen++; - } - - edid_ok = decode_edid(dp->rawedid, dp->edidlen, &dp->edid); - - printk(BIOS_SPEW, "decode edid returns %d\n", edid_ok); - - compute_display_params(dp); - - printk(BIOS_SPEW, "pixel_clock is %i, link_clock is %i\n", - dp->edid.mode.pixel_clock, dp->edid.link_clock); - - intel_ddi_set_pipe_settings(dp); - - runio(dp); - - palette(); - - pixels = dp->edid.mode.ha * (dp->edid.mode.va-4) * 4; - printk(BIOS_SPEW, "ha=%d, va=%d\n",dp->edid.mode.ha, dp->edid.mode.va); - test_gfx(dp); - - set_vbe_mode_info_valid(&dp->edid, (uintptr_t)dp->graphics); - i915_init_done = 1; - return 1; - -fail: - printk(BIOS_SPEW, "Graphics could not be started;"); - /* unclear we will *ever* want to do this. */ - if (0){ - printk(BIOS_SPEW, "Turn off power and wait ..."); - gtt_write(PCH_PP_CONTROL,0xabcd0000); - udelay(600000); - gtt_write(PCH_PP_CONTROL,0xabcd000f); - } - printk(BIOS_SPEW, "Returning.\n"); - return 0; -} |