[platform][qemu-virt-m68k] implement system reset and power off #494
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Implement system reset and power off for the qemu-virt-m68k platform by utilizing the virt-ctrl MMIO device. Previously, this platform lacked a specific platform_halt() implementation, causing it to fall back to the default behavior of spinning indefinitely. As a result, commands like 'reboot' or 'poweroff' would cause the kernel to hang with a "HALT: spinning forever" message instead of actually exiting or restarting the QEMU instance. Introduce the necessary virt-ctrl register definitions and command codes, and implements the platform_halt() callback to trigger the appropriate hardware reset and halt signals via the MMIO interface. Signed-off-by: Kuan-Wei Chiu <[email protected]>
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Implement system reset and power off for the qemu-virt-m68k platform by utilizing the virt-ctrl MMIO device.
Previously, this platform lacked a specific platform_halt() implementation, causing it to fall back to the default behavior of spinning indefinitely. As a result, commands like 'reboot' or 'poweroff' would cause the kernel to hang with a "HALT: spinning forever" message instead of actually exiting or restarting the QEMU instance.
Introduce the necessary virt-ctrl register definitions and command codes, and implements the platform_halt() callback to trigger the appropriate hardware reset and halt signals via the MMIO interface.