nb/intel/nehalem: Remove the C native graphic init

Libgfxinit provides a better alternative to the native C init. While libgfxinit
mandates an ada compiler, we want to encourage use of it since it is in much
better shape and is actually maintained.

This way libgfxinit also gets build-tested by Jenkins.

Change-Id: I9228fa7eadfe2a827c1f4de9d6710b60d3f1b121
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/27515
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

2 files changed, 4 insertions, 461 deletions

diff --git a/src/northbridge/intel/nehalem/Kconfig b/src/northbridge/intel/nehalem/Kconfig
index 26d0a7d159..9eb6e75eac 100644
--- a/src/northbridge/intel/nehalem/Kconfig
+++ b/src/northbridge/intel/nehalem/Kconfig
@@ -21,8 +21,6 @@ config NORTHBRIDGE_INTEL_NEHALEM
 	select TSC_MONOTONIC_TIMER
 	select INTEL_GMA_ACPI
 	select CACHE_MRC_SETTINGS
-	select HAVE_LINEAR_FRAMEBUFFER if MAINBOARD_DO_NATIVE_VGA_INIT
-	select HAVE_VGA_TEXT_FRAMEBUFFER if MAINBOARD_DO_NATIVE_VGA_INIT
 	select POSTCAR_STAGE
 	select POSTCAR_CONSOLE
 
diff --git a/src/northbridge/intel/nehalem/gma.c b/src/northbridge/intel/nehalem/gma.c
index aeff69a475..6e2d4044df 100644
--- a/src/northbridge/intel/nehalem/gma.c
+++ b/src/northbridge/intel/nehalem/gma.c
@@ -571,441 +571,6 @@ static void gma_pm_init_post_vbios(struct device *dev)
 	}
 }
 
-static void train_link(u8 *mmio)
-{
-	/* Clear interrupts. */
-	write32(mmio + DEIIR, 0xffffffff);
-
-	write32(mmio + 0x000f0018, 0x000000ff);
-	write32(mmio + 0x000f1018, 0x000000ff);
-	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, 0x901a2050);
-	mdelay(1);
-	read32(mmio + 0x000f0014); // = 0x00000600
-}
-
-static void power_port(u8 *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
-}
-
-static void intel_gma_init(const struct northbridge_intel_nehalem_config *info,
-			   u8 *mmio, u32 physbase, u16 piobase, u32 lfb)
-{
-	int i;
-	u8 edid_data[128];
-	struct edid edid;
-	struct edid_mode *mode;
-	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->gfx.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 + 0x000fc008, 0x2c010000);
-	write32(mmio + 0x000fc020, 0x2c010000);
-	write32(mmio + 0x000fc038, 0x2c010000);
-	write32(mmio + 0x000fc050, 0x2c010000);
-	write32(mmio + 0x000fc408, 0x2c010000);
-	write32(mmio + 0x000fc420, 0x2c010000);
-	write32(mmio + 0x000fc438, 0x2c010000);
-	write32(mmio + 0x000fc450, 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, GMBUS_PORT_PANEL, 0x50,
-			edid_data, sizeof(edid_data));
-	intel_gmbus_stop(mmio + PCH_GMBUS0);
-	decode_edid(edid_data,
-		    sizeof(edid_data), &edid);
-	mode = &edid.mode;
-
-	/* 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 = mode->hborder;
-	bottom_border = mode->vborder;
-	hpolarity = (mode->phsync == '-');
-	vpolarity = (mode->pvsync == '-');
-	vsync = mode->vspw;
-	hsync = mode->hspw;
-	vblank = mode->vbl;
-	hblank = mode->hbl;
-	hfront_porch = mode->hso;
-	vfront_porch = mode->vso;
-
-	target_frequency = mode->lvds_dual_channel ? mode->pixel_clock
-		: (2 * mode->pixel_clock);
-	vga_textmode_init();
-
-	if (IS_ENABLED(CONFIG_LINEAR_FRAMEBUFFER)) {
-		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);
-	}
-
-	/* 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;
-			/* Doesn't 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;
-	}
-
-	link_m1 = ((uint64_t)link_n1 * mode->pixel_clock) / link_frequency;
-	data_m1 = ((uint64_t)data_n1 * 18 * mode->pixel_clock)
-		/ (link_frequency * 8 * 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->gfx.use_spread_spectrum_clock
-			    ? "Spread spectrum clock\n" : "DREF clock\n"));
-	printk(BIOS_DEBUG,
-	       mode->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)
-		| (mode->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->gfx.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(0),
-		DPLL_VCO_ENABLE | DPLLB_MODE_LVDS
-		| (mode->lvds_dual_channel ? DPLLB_LVDS_P2_CLOCK_DIV_7
-		   : DPLLB_LVDS_P2_CLOCK_DIV_14)
-		| (0x10000 << (pixel_p1 - 1))
-		| ((info->gfx.use_spread_spectrum_clock ? 3 : 0) << 13)
-		| (0x1 << (pixel_p1 - 1)));
-	mdelay(1);
-	write32(mmio + _PCH_DPLL(0),
-		DPLL_VCO_ENABLE | DPLLB_MODE_LVDS
-		| (mode->lvds_dual_channel ? DPLLB_LVDS_P2_CLOCK_DIV_7
-		   : DPLLB_LVDS_P2_CLOCK_DIV_14)
-		| (0x10000 << (pixel_p1 - 1))
-		| ((info->gfx.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)
-		| (mode->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_LINEAR_FRAMEBUFFER)) {
-		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));
-	}
-
-	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 + 0x000f0008, 0x00000040);
-	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_LINEAR_FRAMEBUFFER))
-		write32(mmio + CPU_VGACNTRL, 0x20298e | VGA_DISP_DISABLE);
-	else
-		write32(mmio + CPU_VGACNTRL, 0x20298e);
-
-	train_link(mmio);
-
-	if (IS_ENABLED(CONFIG_LINEAR_FRAMEBUFFER)) {
-		write32(mmio + DSPCNTR(0),
-			DISPLAY_PLANE_ENABLE | DISPPLANE_BGRX888);
-		mdelay(1);
-	}
-
-	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, 0xb01a2050);
-	mdelay(1);
-	write32(mmio + TRANSCONF(0), TRANS_ENABLE | TRANS_6BPC |
-		(IS_ENABLED(CONFIG_LINEAR_FRAMEBUFFER) ? TRANS_STATE_MASK : 0));
-	write32(mmio + PCH_LVDS,
-		LVDS_PORT_ENABLE
-		| (hpolarity << 20) | (vpolarity << 21)
-		| (mode->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);
-
-	/* Doesn't change any hw behaviour but vga oprom expects it there. */
-	write32(mmio + 0x0004f040, 0x01000008);
-	write32(mmio + 0x0004f04c, 0x7f7f0000);
-	write32(mmio + 0x0004f054, 0x0000020d);
-
-	if (IS_ENABLED(CONFIG_LINEAR_FRAMEBUFFER)) {
-		memset((void *)lfb, 0,
-		       edid.x_resolution * edid.y_resolution * 4);
-		set_vbe_mode_info_valid(&edid, lfb);
-	}
-}
-
 /* Enable SCI to ACPI _GPE._L06 */
 static void gma_enable_swsci(void)
 {
@@ -1037,32 +602,12 @@ static void gma_func0_init(struct device *dev)
 	/* Init graphics power management */
 	gma_pm_init_pre_vbios(dev);
 
-	if (IS_ENABLED(CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT) ||
-	    IS_ENABLED(CONFIG_MAINBOARD_USE_LIBGFXINIT)) {
-		u32 physbase;
+	if (IS_ENABLED(CONFIG_MAINBOARD_USE_LIBGFXINIT)) {
 		struct northbridge_intel_nehalem_config *conf = dev->chip_info;
-		struct resource *lfb_res;
-		struct resource *pio_res;
-
-		lfb_res = find_resource(dev, PCI_BASE_ADDRESS_2);
-		pio_res = find_resource(dev, PCI_BASE_ADDRESS_4);
-
-		physbase = pci_read_config32(dev, 0x5c) & ~0xf;
-
-		if (gtt_res && gtt_res->base && physbase &&
-		    pio_res && pio_res->base && lfb_res && lfb_res->base) {
-			printk(BIOS_SPEW,
-			       "Initializing VGA without OPROM. MMIO 0x%llx\n",
-			       gtt_res->base);
-			if (IS_ENABLED(CONFIG_MAINBOARD_USE_LIBGFXINIT)) {
-				int lightup_ok;
-				gma_gfxinit(&lightup_ok);
-			} else {
-				intel_gma_init(conf, res2mmio(gtt_res, 0, 0),
-					physbase, pio_res->base, lfb_res->base);
-			}
-		}
+		int lightup_ok;
+		printk(BIOS_SPEW, "Initializing VGA without OPROM.");
 
+		gma_gfxinit(&lightup_ok);
 		/* Linux relies on VBT for panel info. */
 		generate_fake_intel_oprom(&conf->gfx, dev,
 					  "$VBT IRONLAKE-MOBILE");