https://git.reactos.org/?p=reactos.git;a=commitdiff;h=e00ea7daddfa21ba692d6d9a22d460d79920c6fc
commit e00ea7daddfa21ba692d6d9a22d460d79920c6fc Author: Dmitry Borisov <[email protected]> AuthorDate: Wed Jan 29 21:49:31 2020 +0600 Commit: GitHub <[email protected]> CommitDate: Wed Jan 29 16:49:31 2020 +0100 [FREELDR] Properly set keyboard flags in hardware detection (#2288) See https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/wdm/ns-wdm-_cm_keyboard_device_data --- boot/freeldr/freeldr/arch/i386/machpc.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/boot/freeldr/freeldr/arch/i386/machpc.c b/boot/freeldr/freeldr/arch/i386/machpc.c index 95253971c02..3ca5578aa4b 100644 --- a/boot/freeldr/freeldr/arch/i386/machpc.c +++ b/boot/freeldr/freeldr/arch/i386/machpc.c @@ -919,6 +919,7 @@ DetectKeyboardPeripheral(PCONFIGURATION_COMPONENT_DATA ControllerKey) PCM_KEYBOARD_DEVICE_DATA KeyboardData; PCONFIGURATION_COMPONENT_DATA PeripheralKey; ULONG Size; + REGS Regs; /* HACK: don't call DetectKeyboardDevice() as it fails in Qemu 0.8.2 if (DetectKeyboardDevice()) */ @@ -944,12 +945,21 @@ DetectKeyboardPeripheral(PCONFIGURATION_COMPONENT_DATA ControllerKey) PartialDescriptor->ShareDisposition = CmResourceShareUndetermined; PartialDescriptor->u.DeviceSpecificData.DataSize = sizeof(CM_KEYBOARD_DEVICE_DATA); + /* Int 16h AH=02h + * KEYBOARD - GET SHIFT FLAGS + * + * Return: + * AL - shift flags + */ + Regs.b.ah = 0x02; + Int386(0x16, &Regs, &Regs); + KeyboardData = (PCM_KEYBOARD_DEVICE_DATA)(PartialDescriptor + 1); KeyboardData->Version = 1; KeyboardData->Revision = 1; KeyboardData->Type = 4; KeyboardData->Subtype = 0; - KeyboardData->KeyboardFlags = 0x20; + KeyboardData->KeyboardFlags = Regs.b.al; /* Create controller key */ FldrCreateComponentKey(ControllerKey,
