diff options
Diffstat (limited to 'src/mainboard/kontron/986lcd-m/mainboard.c')
| -rw-r--r-- | src/mainboard/kontron/986lcd-m/mainboard.c | 50 |
1 files changed, 49 insertions, 1 deletions
diff --git a/src/mainboard/kontron/986lcd-m/mainboard.c b/src/mainboard/kontron/986lcd-m/mainboard.c index 1d0c4946b2..d7b1f13cc1 100644 --- a/src/mainboard/kontron/986lcd-m/mainboard.c +++ b/src/mainboard/kontron/986lcd-m/mainboard.c @@ -25,6 +25,7 @@ #endif #include <pc80/mc146818rtc.h> #include <arch/io.h> +#include <arch/interrupt.h> #include "chip.h" #if CONFIG_PCI_OPTION_ROM_RUN_YABEL @@ -70,6 +71,53 @@ static void int15_install(void) } #endif +#if defined(CONFIG_PCI_OPTION_ROM_RUN_REALMODE) && CONFIG_PCI_OPTION_ROM_RUN_REALMODE +static int int15_handler(struct eregs *regs) +{ + int res = -1; + + /* This int15 handler is Intel IGD. specific. Other chipsets need other + * handlers. The right way to do this is to move this handler code into + * the mainboard or northbridge code. + * TODO: completely move to mainboards / chipsets. + */ + switch (regs->eax & 0xffff) { + /* And now Intel IGD code */ +#define BOOT_DISPLAY_DEFAULT 0 +#define BOOT_DISPLAY_CRT (1 << 0) +#define BOOT_DISPLAY_TV (1 << 1) +#define BOOT_DISPLAY_EFP (1 << 2) +#define BOOT_DISPLAY_LCD (1 << 3) +#define BOOT_DISPLAY_CRT2 (1 << 4) +#define BOOT_DISPLAY_TV2 (1 << 5) +#define BOOT_DISPLAY_EFP2 (1 << 6) +#define BOOT_DISPLAY_LCD2 (1 << 7) + case 0x5f35: + regs->eax = 0x5f; + regs->ecx = BOOT_DISPLAY_DEFAULT; + res = 0; + break; + case 0x5f40: + regs->eax = 0x5f; + regs->ecx = 3; // This is mainboard specific + printk(BIOS_DEBUG, "DISPLAY=%x\n", regs->ecx); + res = 0; + break; + default: + printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", + regs->eax & 0xffff); + } + + return res; +} + +static void int15_install(void) +{ + mainboard_interrupt_handlers(0x15, &int15_handler); +} +#endif + + /* Hardware Monitor */ static u16 hwm_base = 0xa00; @@ -221,7 +269,7 @@ static void verb_setup(void) static void mainboard_enable(device_t dev) { -#if CONFIG_PCI_OPTION_ROM_RUN_YABEL +#if CONFIG_PCI_OPTION_ROM_RUN_YABEL || CONFIG_PCI_OPTION_ROM_RUN_REALMODE /* Install custom int15 handler for VGA OPROM */ int15_install(); #endif |