Required OAL Functions (Windows Embedded CE 6.0)
1/5/2010
The following table shows the required OAL functions. These functions are present in the OAL and are required by the kernel library Nk.lib.
Note
This is not an all-inclusive OAL function list. OEMs can implement additional functions to enhance platform support.
| Programming element | Description |
|---|---|
This function handles cache errors that occur on a MIPS platform. |
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This function is deprecated and should never be used. Instead, use the OEMCacheRangeFlush function. |
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This function is deprecated and should never be used. Instead, use the OEMCacheRangeFlush function. |
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Required. This function initializes the CPU clock and set the system tick interval frequency. |
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This function sets the cache mode used to build the ARM CPU page tables. |
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This functionflushes or invalidates a certain range of the cache or translation look-aside buffer (TLB). It is used by the kernel. |
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This function clears and initializes the serial communications port. |
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This function handles base-register updates and is specific to ARM processors, excluding StrongARM and XScale. It is called from the kernel when a data abort occurs. |
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This function responds to a CacheSync function request. It is used by the kernel. |
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This function gets information about extension dynamic RAM (DRAM), if present on the device. |
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This function retrieves the time from the real-time clock. It is called by the kernel. |
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This function places the CPU in the idle state when there are no threads ready to run. It is called by the kernel. |
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This function initializes all hardware interfaces for the target device. It is implemented by the OEM. |
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This function disables the specified hardware interrupt. |
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This function signals completion of interrupt processing. |
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This function performs any hardware operations necessary to enable the specified hardware interrupt. |
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This function handles interrupts. It is called by the kernel when an interrupt occurs. |
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This function provides fast interrupt request (FIQ) support for the ARM microprocessor. It is implemented by the OEM. |
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This function provides a generic I/O control code (IOCTL) for OEM-supplied information. |
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This function supports a nonmaskable interrupt. It is implemented by the OEM. |
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This function captures a nonmaskable interrupt (NMI). It is implemented by an OEM. |
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This function places the CPU into a suspend state and is responsible for any final power-down state operations. It is invoked when the user presses the OFF button or when the Graphics, Windowing, and Events Subsystem (GWES) power-off timer signals that the CPU has timed out. |
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This function sets the real-time clock alarm. It is called by the kernel. |
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This function sets the real-time clock. It is called by the kernel. |
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This function reads a registry file into RAM from persistent storage as defined by the OEM. Changing this global variable to point to an implementation of the ReadRegistryFromOEM function is optional. |
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This function retrieves the number of milliseconds that have elapsed since Windows Embedded CE was started. It is called from the OAL. |
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This function is deprecated and should never be used. Instead, use the OEMCacheRangeFlush function. |
For information about the CPU dependencies for the required OAL functions, see CPU Dependencies for OAL Functions.