c8389550de
This compat property sole function is to prevent the device from being instantiated. Instead of requiring an extra compat property, check if fw_cfg has DMA enabled. fw_cfg is a built-in device that is initialized very early by the machine init code. We have at least one other device that also assumes fw_cfg_find() can be safely used on realize: pvpanic. This has the additional benefit of handling other cases properly, like: $ qemu-system-x86_64 -device vmgenid -machine none qemu-system-x86_64: -device vmgenid: vmgenid requires DMA write support in fw_cfg, which this machine type does not provide $ qemu-system-x86_64 -device vmgenid -machine pc-i440fx-2.9 -global fw_cfg.dma_enabled=off qemu-system-x86_64: -device vmgenid: vmgenid requires DMA write support in fw_cfg, which this machine type does not provide $ qemu-system-x86_64 -device vmgenid -machine pc-i440fx-2.6 -global fw_cfg.dma_enabled=on [boots normally] Suggested-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Ben Warren <ben@skyportsystems.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
40 lines
1.5 KiB
C
40 lines
1.5 KiB
C
#ifndef BIOS_LINKER_LOADER_H
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#define BIOS_LINKER_LOADER_H
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typedef struct BIOSLinker {
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GArray *cmd_blob;
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GArray *file_list;
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} BIOSLinker;
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bool bios_linker_loader_can_write_pointer(void);
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BIOSLinker *bios_linker_loader_init(void);
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void bios_linker_loader_alloc(BIOSLinker *linker,
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const char *file_name,
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GArray *file_blob,
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uint32_t alloc_align,
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bool alloc_fseg);
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void bios_linker_loader_add_checksum(BIOSLinker *linker, const char *file,
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unsigned start_offset, unsigned size,
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unsigned checksum_offset);
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void bios_linker_loader_add_pointer(BIOSLinker *linker,
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const char *dest_file,
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uint32_t dst_patched_offset,
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uint8_t dst_patched_size,
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const char *src_file,
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uint32_t src_offset);
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void bios_linker_loader_write_pointer(BIOSLinker *linker,
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const char *dest_file,
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uint32_t dst_patched_offset,
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uint8_t dst_patched_size,
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const char *src_file,
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uint32_t src_offset);
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void bios_linker_loader_cleanup(BIOSLinker *linker);
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#endif
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