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authorVladimir Serbinenko <phcoder@gmail.com>2014-09-01 01:41:37 +0200
committerVladimir Serbinenko <phcoder@gmail.com>2014-09-05 22:48:49 +0200
commita2a906e47a87acc3acdca0ee2790ff96409b9b46 (patch)
tree32bd54895f2c1f199d649ed96a2dd7f2e9a4e722 /src/drivers
parenta4857052f756507e18a54beba704f183f128a057 (diff)
downloadcoreboot-a2a906e47a87acc3acdca0ee2790ff96409b9b46.tar.xz
Consolidate intel vga int15 hooks
Change-Id: I9366dded98bf15f6da44ce893dd10698ba09fd55 Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-on: http://review.coreboot.org/6820 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Diffstat (limited to 'src/drivers')
-rw-r--r--src/drivers/intel/gma/Kconfig4
-rw-r--r--src/drivers/intel/gma/Makefile.inc3
-rw-r--r--src/drivers/intel/gma/int15.c124
-rw-r--r--src/drivers/intel/gma/int15.h35
4 files changed, 166 insertions, 0 deletions
diff --git a/src/drivers/intel/gma/Kconfig b/src/drivers/intel/gma/Kconfig
index e26c297a09..6657224680 100644
--- a/src/drivers/intel/gma/Kconfig
+++ b/src/drivers/intel/gma/Kconfig
@@ -32,3 +32,7 @@ config INTEL_DDI
config INTEL_EDID
bool
default n
+
+config INTEL_INT15
+ bool
+ default n
diff --git a/src/drivers/intel/gma/Makefile.inc b/src/drivers/intel/gma/Makefile.inc
index 7a1b97babb..b19334eef6 100644
--- a/src/drivers/intel/gma/Makefile.inc
+++ b/src/drivers/intel/gma/Makefile.inc
@@ -20,3 +20,6 @@
ramstage-$(CONFIG_INTEL_DP) += intel_dp.c drm_dp_helper.c display.c
ramstage-$(CONFIG_INTEL_DDI) += intel_ddi.c
ramstage-$(CONFIG_INTEL_EDID) += edid.c
+ifeq ($(CONFIG_VGA_ROM_RUN),y)
+ramstage-$(CONFIG_INTEL_INT15) += int15.c
+endif
diff --git a/src/drivers/intel/gma/int15.c b/src/drivers/intel/gma/int15.c
new file mode 100644
index 0000000000..f21088fec1
--- /dev/null
+++ b/src/drivers/intel/gma/int15.c
@@ -0,0 +1,124 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ * Copyright (C) 2012 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.
+ *
+ * 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 <x86emu/x86emu.h>
+#include <arch/interrupt.h>
+#include "int15.h"
+
+static int active_lfp, pfit, display, panel_type;
+
+int intel_vga_int15_handler(void)
+{
+ int res = 0;
+
+ printk(BIOS_DEBUG, "%s: AX=%04x BX=%04x CX=%04x DX=%04x\n",
+ __func__, X86_AX, X86_BX, X86_CX, X86_DX);
+
+ switch (X86_AX) {
+ case 0x5f34:
+ /*
+ * Set Panel Fitting Hook:
+ * bit 2 = Graphics Stretching
+ * bit 1 = Text Stretching
+ * bit 0 = Centering (do not set with bit1 or bit2)
+ * 0 = video bios default
+ */
+ X86_AX = 0x005f;
+ X86_CX = pfit;
+ res = 1;
+ break;
+ case 0x5f35:
+ /*
+ * Boot Display Device Hook:
+ * bit 0 = CRT
+ * bit 1 = TV (eDP) *
+ * bit 2 = EFP *
+ * bit 3 = LFP
+ * bit 4 = CRT2
+ * bit 5 = TV2 (eDP) *
+ * bit 6 = EFP2 *
+ * bit 7 = LFP2
+ */
+ X86_AX = 0x005f;
+ X86_CX = display;
+ res = 1;
+ break;
+ case 0x5f40: /* Boot Panel Type */
+ X86_AX = 0x005f; // Success
+ X86_CL = panel_type;
+ printk(BIOS_DEBUG, "DISPLAY=%x\n", X86_CL);
+ break;
+ case 0x5f51:
+ /*
+ * Hook to select active LFP configuration:
+ * 00h = No LVDS, VBIOS does not enable LVDS
+ * 01h = Int-LVDS, LFP driven by integrated LVDS decoder
+ * 02h = SVDO-LVDS, LFP driven by SVDO decoder
+ * 03h = eDP, LFP Driven by Int-DisplayPort encoder
+ */
+ X86_AX = 0x005f;
+ X86_CX = active_lfp;
+ res = 1;
+ break;
+ case 0x5f70:
+ switch ((X86_CX >> 8) & 0xff) {
+ case 0:
+ /* Get Mux */
+ X86_AX = 0x005f;
+ X86_CX = 0x0000;
+ res = 1;
+ break;
+ case 1:
+ /* Set Mux */
+ X86_AX = 0x005f;
+ X86_CX = 0x0000;
+ res = 1;
+ break;
+ case 2:
+ /* Get SG/Non-SG mode */
+ X86_AX = 0x005f;
+ X86_CX = 0x0000;
+ res = 1;
+ break;
+ default:
+ /* Interrupt was not handled */
+ printk(BIOS_DEBUG,
+ "Unknown INT15 5f70 function: 0x%02x\n",
+ ((X86_CX >> 8) & 0xff));
+ break;
+ }
+ break;
+
+ default:
+ printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", X86_AX);
+ break;
+ }
+ return res;
+}
+
+
+void install_intel_vga_int15_handler(int active_lfp_, int pfit_, int display_, int panel_type_)
+{
+ active_lfp = active_lfp_;
+ pfit = pfit_;
+ display = display_;
+ panel_type = panel_type_;
+ mainboard_interrupt_handlers(0x15, &intel_vga_int15_handler);
+}
diff --git a/src/drivers/intel/gma/int15.h b/src/drivers/intel/gma/int15.h
new file mode 100644
index 0000000000..b5abc94fb9
--- /dev/null
+++ b/src/drivers/intel/gma/int15.h
@@ -0,0 +1,35 @@
+int intel_vga_int15_handler(void);
+
+enum {
+ GMA_INT15_BOOT_DISPLAY_DEFAULT = 0,
+ GMA_INT15_BOOT_DISPLAY_CRT = (1 << 0),
+ GMA_INT15_BOOT_DISPLAY_TV = (1 << 1),
+ GMA_INT15_BOOT_DISPLAY_EFP = (1 << 2),
+ GMA_INT15_BOOT_DISPLAY_LFP = (1 << 3),
+ GMA_INT15_BOOT_DISPLAY_CRT2 = (1 << 4),
+ GMA_INT15_BOOT_DISPLAY_TV2 = (1 << 5),
+ GMA_INT15_BOOT_DISPLAY_EFP2 = (1 << 6),
+ GMA_INT15_BOOT_DISPLAY_LFP2 = (1 << 7),
+};
+enum {
+ GMA_INT15_PANEL_FIT_DEFAULT = 0,
+ GMA_INT15_PANEL_FIT_CENTERING = (1 << 0),
+ GMA_INT15_PANEL_FIT_TXT_STRETCH = (1 << 1),
+ GMA_INT15_PANEL_FIT_GFX_STRETCH = (1 << 2),
+};
+
+enum {
+ GMA_INT15_ACTIVE_LFP_NONE = 0x00,
+ GMA_INT15_ACTIVE_LFP_INT_LVDS = 0x01,
+ GMA_INT15_ACTIVE_LFP_SVDO_LVDS = 0x02,
+ GMA_INT15_ACTIVE_LFP_EDP = 0x03,
+};
+
+
+#if CONFIG_VGA_ROM_RUN
+/* Install custom int15 handler for VGA OPROM */
+void install_intel_vga_int15_handler(int active_lfp, int pfit, int display, int panel_type);
+#else
+static inline void install_intel_vga_int15_handler(int active_lfp, int pfit, int display, int panel_type) {}
+#endif
+