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ProgrammingChapter —7
262 700 Series Color Mobile Computer User’sManual
IOCTL_HAL_GET_BOOT_DEVICE
This IOCTL code allows software to check which device CE booted from.
Usage
#include “oemioctl.h”
Syntax
BOOL KernelIoControl( IOCTL_HAL_GET_BOOT_DEVICE,LPVOID
lpInBuf,DWORD nInBufSize,LPVOID lpOutBuf,DWORD
nOutBufSize,LPDWORD lpBytesReturned );
Parameters
lpInBuf Should be set to NULL.
lpInBufSize Should be set to zero.
lpOutBuf Must point to a buffer large enough to hold a DWORD (4 bytes)
that contains the boot device. The following boot devices are sup-
ported:
#define HAL_BOOT_DEVICE_UNKNOWN 0
#define HAL_BOOT_DEVICE_ROM_XIP 1
#define HAL_BOOT_DEVICE_ROM 2
#define HAL_BOOT_DEVICE_PCMCIA_ATA 3
#define HAL_BOOT_DEVICE_PCMCIA_LINEAR 4
#define HAL_BOOT_DEVICE_IDE_ATA 5
#define HAL_BOOT_DEVICE_IDE_ATAPI 6
nOutBufSize ThesizeoflpOutBuf in bytes (4).
lpBytesReturned The nu mbe r of bytes retu rned by the function.
Return Values
Returns TRUE if function succeeds. Returns FALSE if the function fails.
GetLastError() may be used to get the extended error value.