43 lines
1.4 KiB
Plaintext
43 lines
1.4 KiB
Plaintext
# Copyright (c) 2020 Intel Corporation
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# SPDX-License-Identifier: Apache-2.0
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choice BACKING_STORE_CHOICE
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prompt "Backing store algorithms"
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default BACKING_STORE_CUSTOM
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config BACKING_STORE_CUSTOM
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bool "Custom backing store implementation"
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help
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This option is chosen when the backing store will be implemented in
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the application. This will be typical as these tend to be very
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hardware-dependent.
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config BACKING_STORE_RAM
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bool "RAM-based test backing store"
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help
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This implements a backing store using physical RAM pages that the
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Zephyr kernel is otherwise unaware of. It is intended for
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demonstration and testing of the demand paging feature.
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config BACKING_STORE_QEMU_X86_TINY_FLASH
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bool "Flash-based backing store on qemu_x86_tiny"
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depends on BOARD_QEMU_X86_TINY
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help
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This uses the "flash" memory area (in DTS) as the backing store
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for demand paging. The qemu_x86_tiny.ld linker script puts
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the symbols outside of boot and pinned sections into the flash
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area, allowing testing of the demand paging mechanism on
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code and data.
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endchoice
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if BACKING_STORE_RAM
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config BACKING_STORE_RAM_PAGES
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int "Number of pages for RAM backing store"
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default 16
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help
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Number of pages of backing store memory to reserve in RAM. All test
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cases for demand paging assume that there are at least 16 pages of
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backing store storage available.
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endif # BACKING_STORE_RAM
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