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lenovo/t60: Implement intel VGA callbacks. 

Without it option ROM run results in just a black screen.

Change-Id: Id203f55ca0f02c290a3f40ac1ec7c5f23c5580bf
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/5344
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
This commit is contained in:
Vladimir Serbinenko 2014-03-04 17:43:57 +01:00
parent 63acd22dc5
commit 25b55f3d1c
1 changed files with 39 additions and 0 deletions
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39
src/mainboard/lenovo/t60/mainboard.c
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@ -34,8 +34,11 @@
#include <northbridge/intel/i945/i945.h>
#include <pc80/mc146818rtc.h>
#include <arch/x86/include/arch/acpigen.h>
#include <arch/interrupt.h>
#include <smbios.h>
#include <build.h>
#include <x86emu/x86emu.h>
#define PANEL INT15_5F35_CL_DISPLAY_DEFAULT
static acpi_cstate_t cst_entries[] = {
{ 1, 1, 1000, { 0x7f, 1, 2, { 0 }, 1, 0 } },
@ -43,6 +46,37 @@ 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;
@ -63,6 +97,11 @@ static void mainboard_init(device_t dev)
struct southbridge_intel_i82801gx_config *config;
device_t dev0, idedev;
#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)