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authorDenis 'GNUtoo' Carikli <GNUtoo@no-log.org>2013-05-21 03:13:46 +0200
committerAlexandru Gagniuc <mr.nuke.me@gmail.com>2013-06-07 02:49:31 +0200
commit4062f179a755ca3b303f444ee3ef812fb287f9f1 (patch)
treec1793626863c88d6bfeeb28b89c4143a40d1bf6d
parent7ed739445ba7ba6ffcf38d647426a44f905ac087 (diff)
downloadcoreboot-4062f179a755ca3b303f444ee3ef812fb287f9f1.tar.xz
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)
-rw-r--r--src/mainboard/lenovo/x60/mainboard.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/x60/mainboard.c b/src/mainboard/lenovo/x60/mainboard.c
index 032d64160a..d2d0733487 100644
--- a/src/mainboard/lenovo/x60/mainboard.c
+++ b/src/mainboard/lenovo/x60/mainboard.c
@@ -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)