Vladimir Serbinenko (phcoder@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5344
-gerrit
commit 34d02806561e1a0bc1cdbe5c6b4b23a38a72045f Author: Vladimir Serbinenko phcoder@gmail.com Date: Tue Mar 4 17:43:57 2014 +0100
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 --- src/mainboard/lenovo/t60/mainboard.c | 39 ++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+)
diff --git a/src/mainboard/lenovo/t60/mainboard.c b/src/mainboard/lenovo/t60/mainboard.c index 6f93dcf..ae6240b 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)