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baytrail: Factor out INT15 handler 

The handler is the same on all Bay Trail mainboards. Factor it out.

Change-Id: Ia1b6faaca4792cda5f14948d23498182bf4bb2c3
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54415
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Benjamin Doron <benjamin.doron00@gmail.com>
Reviewed-by: Máté Kukri <kukri.mate@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Angel Pons 2021-05-17 18:46:41 +02:00 committed by Patrick Georgi
parent a949e30191
commit 4cedb8c3a9
5 changed files with 111 additions and 187 deletions
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97
src/mainboard/bostentech/gbyt4/mainboard.c
View File

@ -1,107 +1,16 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <device/device.h>
#include <console/console.h>
#if CONFIG(VGA_ROM_RUN)
#include <x86emu/x86emu.h>
#endif
#include <arch/interrupt.h>
#if CONFIG(VGA_ROM_RUN)
static int int15_handler(void)
{
int res = 1;
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 = 0x0001;
res = 1;
break;
case 0x5f35:
/*
* Boot Display Device Hook:
* bit 0 = CRT
* bit 1 = TV
* bit 2 = EFP (HDMI)
* bit 3 = LFP (eDP)*
* bit 4 = CRT2
* bit 5 = TV2
* bit 6 = EFP2
* bit 7 = LFP2
*/
X86_AX = 0x005f;
X86_CX = 0x0008;
res = 1;
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 = 0x0003;
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;
}
#endif
#include <soc/int15.h>
// mainboard_enable is executed as first thing after
// enumerate_buses().
static void mainboard_enable(struct device *dev)
{
#if CONFIG(VGA_ROM_RUN)
/* Install custom int15 handler for VGA OPROM */
mainboard_interrupt_handlers(0x15, &int15_handler);
#endif
if (CONFIG(VGA_ROM_RUN))
install_baytrail_vga_int15_handler();
}
struct chip_operations mainboard_ops = {

97
src/mainboard/google/rambi/mainboard.c
View File

@ -2,103 +2,14 @@
#include <device/device.h>
#include <console/console.h>
#if CONFIG(VGA_ROM_RUN)
#include <x86emu/x86emu.h>
#endif
#include <arch/interrupt.h>
#include <smbios.h>
#include "ec.h"
#include <variant/onboard.h>
#include <soc/gpio.h>
#include <soc/int15.h>
#include <bootstate.h>
#include <vendorcode/google/chromeos/chromeos.h>
#if CONFIG(VGA_ROM_RUN)
static int int15_handler(void)
{
int res = 1;
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 = 0x0001;
res = 1;
break;
case 0x5f35:
/*
* Boot Display Device Hook:
* bit 0 = CRT
* bit 1 = TV
* bit 2 = EFP (HDMI)
* bit 3 = LFP (eDP)*
* bit 4 = CRT2
* bit 5 = TV2
* bit 6 = EFP2
* bit 7 = LFP2
*/
X86_AX = 0x005f;
X86_CX = 0x0008;
res = 1;
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 = 0x0003;
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;
}
#endif
static void mainboard_init(struct device *dev)
{
mainboard_ec_init();
@ -144,10 +55,10 @@ static void mainboard_enable(struct device *dev)
dev->ops->init = mainboard_init;
dev->ops->get_smbios_data = mainboard_smbios_data;
dev->ops->acpi_inject_dsdt = chromeos_dsdt_generator;
#if CONFIG(VGA_ROM_RUN)
/* Install custom int15 handler for VGA OPROM */
mainboard_interrupt_handlers(0x15, &int15_handler);
#endif
if (CONFIG(VGA_ROM_RUN))
install_baytrail_vga_int15_handler();
}
struct chip_operations mainboard_ops = {

1
src/soc/intel/baytrail/Makefile.inc
View File

@ -48,6 +48,7 @@ ramstage-y += smm.c
ramstage-y += southcluster.c
ramstage-y += xhci.c
ramstage-$(CONFIG_ELOG) += elog.c
ramstage-$(CONFIG_VGA_ROM_RUN) += int15.c
ifeq ($(CONFIG_HAVE_REFCODE_BLOB),y)
ramstage-y += refcode.c

8
src/soc/intel/baytrail/include/soc/int15.h Normal file
View File

@ -0,0 +1,8 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef SOC_INTEL_BAYTRAIL_INT15_H
#define SOC_INTEL_BAYTRAIL_INT15_H
void install_baytrail_vga_int15_handler(void);
#endif /* !SOC_INTEL_BAYTRAIL_INT15_H */

95
src/soc/intel/baytrail/int15.c Normal file
View File

@ -0,0 +1,95 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <arch/interrupt.h>
#include <console/console.h>
#include <soc/int15.h>
#include <x86emu/x86emu.h>
static int int15_handler(void)
{
int res = 1;
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 = 0x0001;
res = 1;
break;
case 0x5f35:
/*
* Boot Display Device Hook:
* bit 0 = CRT
* bit 1 = TV
* bit 2 = EFP (HDMI)
* bit 3 = LFP (eDP)*
* bit 4 = CRT2
* bit 5 = TV2
* bit 6 = EFP2
* bit 7 = LFP2
*/
X86_AX = 0x005f;
X86_CX = 0x0008;
res = 1;
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 = 0x0003;
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_baytrail_vga_int15_handler(void)
{
mainboard_interrupt_handlers(0x15, &int15_handler);
}