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authorVladimir Serbinenko <phcoder@gmail.com>2014-03-04 17:43:57 +0100
committerVladimir Serbinenko <phcoder@gmail.com>2014-06-01 02:16:25 +0200
commit25b55f3d1ceb4fdf67ffb29ed4080dfd5f4e5916 (patch)
treee6f1cc4343919974759484e18d3216b23294ab40
parent63acd22dc5366c72a7165138f5030df9523824dc (diff)
downloadcoreboot-25b55f3d1ceb4fdf67ffb29ed4080dfd5f4e5916.tar.xz
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>
-rw-r--r--src/mainboard/lenovo/t60/mainboard.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/t60/mainboard.c b/src/mainboard/lenovo/t60/mainboard.c
index 6f93dcf105..ae6240bd06 100644
--- a/src/mainboard/lenovo/t60/mainboard.c
+++ b/src/mainboard/lenovo/t60/mainboard.c
@@ -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)