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Lenovo X60: Add int15 handler 

Without that commit, with CONFIG_PCI_OPTION_ROM_RUN_YABEL,
  The VGA option rom doesn't init the right display:
  it initializes the external display, where we have
  a black scren(with backlight on).

This commit is based on the code of mainboard.c in
  src/mainboard/roda/rk886ex.

Change-Id: I8457aaf0503e0efdf0fcba9ff5e8a07ac04c5ca6
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Reviewed-on: http://review.coreboot.org/3265
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
This commit is contained in:
Denis 'GNUtoo' Carikli 2013-05-21 03:13:46 +02:00 committed by Alexandru Gagniuc
parent 7ed739445b
commit 4062f179a7
1 changed files with 40 additions and 0 deletions
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40
src/mainboard/lenovo/x60/mainboard.c
View File

@ -28,6 +28,7 @@
#include <device/pci_ops.h>
#include <device/pci_ids.h>
#include <arch/io.h>
#include <arch/interrupt.h>
#include <ec/lenovo/pmh7/pmh7.h>
#include <ec/acpi/ec.h>
#include <ec/lenovo/h8/h8.h>
@ -35,6 +36,8 @@
#include <pc80/mc146818rtc.h>
#include "dock.h"
#include <arch/x86/include/arch/acpigen.h>
#include <x86emu/x86emu.h>
#define PANEL INT15_5F35_CL_DISPLAY_DEFAULT
int i915lightup(unsigned int physbase, unsigned int iobase, unsigned int mmio,
unsigned int gfx);
@ -45,6 +48,37 @@ static acpi_cstate_t cst_entries[] = {
{ 2, 17, 250, { 0x01, 8, 0, { 0 }, DEFAULT_PMBASE + LV3, 0 } },
};
#if CONFIG_PCI_OPTION_ROM_RUN_YABEL || CONFIG_PCI_OPTION_ROM_RUN_REALMODE
static int int15_handler(void)
{
/* The right way to do this is to move this handler code into
* the mainboard or northbridge code.
* TODO: completely move to mainboards / chipsets.
*/
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 0x5f35: /* Boot Display */
X86_AX = 0x005f; // Success
X86_CL = PANEL;
break;
case 0x5f40: /* Boot Panel Type */
X86_AX = 0x005f; // Success
X86_CL = 3;
printk(BIOS_DEBUG, "DISPLAY=%x\n", X86_CL);
break;
default:
/* Interrupt was not handled */
printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", X86_AX);
return 0;
}
/* Interrupt handled */
return 1;
}
#endif
int get_cst_entries(acpi_cstate_t **entries)
{
*entries = cst_entries;
@ -61,6 +95,12 @@ static void mainboard_enable(device_t dev)
ec_set_bit(0x03, 2);
ec_write(0x0c, 0x88);
}
#if CONFIG_PCI_OPTION_ROM_RUN_YABEL || CONFIG_PCI_OPTION_ROM_RUN_REALMODE
/* Install custom int15 handler for VGA OPROM */
mainboard_interrupt_handlers(0x15, &int15_handler);
#endif
/* If we're resuming from suspend, blink suspend LED */
dev0 = dev_find_slot(0, PCI_DEVFN(0,0));
if (dev0 && pci_read_config32(dev0, SKPAD) == SKPAD_ACPI_S3_MAGIC)