91 lines
3.2 KiB
Plaintext
91 lines
3.2 KiB
Plaintext
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:name: X86_64-KVM Linux
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:description: This script runs Linux on a bare x86_64 platform in KVM.
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$name?="x86_64-kvm"
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mach create $name
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$bin?=@https://dl.antmicro.com/projects/renode/virt_x86_64--linux.bin-s_9012224-95afda97d7185427a02333412baa95daac72270a
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$bios?=@https://dl.antmicro.com/projects/renode/virt_x86--kvmtool-bios.bin-s_687-dfaa7e98ad587f40df43a0d8eff5c320de72f9bf
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machine LoadPlatformDescription @platforms/cpus/x86_64-kvm.repl
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showAnalyzer uart
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macro reset
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"""
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# Load linux headers (assuming 'setup_sects' = 0x1f)
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sysbus LoadBinary $bin 0x10000 sysbus.cpu offset=0x0 size=0x4000
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# Load bios
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sysbus LoadBinary $bios 0xf0000 sysbus.cpu
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# Load linux -- skip the header (assuming 'setup_sects' = 0x1f)
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sysbus LoadBinary $bin 0x100000 sysbus.cpu offset=0x4000
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# Setup e820 memory map at address 0x9fc00
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# Set e820_entries
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sysbus WriteDoubleWord 0x9fc00 4
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# Set bios RAM
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sysbus WriteQuadWord 0x9fc04 0 # Start address
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sysbus WriteQuadWord 0x9fc0c 0x9fc00 # Size
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sysbus WriteDoubleWord 0x9fc14 1 # Type RAM
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# Set e820 Map
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sysbus WriteQuadWord 0x9fc18 0x9fc00 # Start address
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sysbus WriteQuadWord 0x9fc20 0x400 # Size
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sysbus WriteDoubleWord 0x9fc28 2 # Type reserved
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# Set BIOS ROM
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sysbus WriteQuadWord 0x9fc2c 0xf0000 # Start address
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sysbus WriteQuadWord 0x9fc34 0x10000 # Size
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sysbus WriteDoubleWord 0x9fc3c 2 # Type reserved
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# Set RAM
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sysbus WriteQuadWord 0x9fc40 0x100000 # Start address
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sysbus WriteQuadWord 0x9fc48 0x1ff00000 # Size
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sysbus WriteDoubleWord 0x9fc50 1 # Type RAM
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# Setup Interrupt Vector
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# kvmtool's fake interrupt handler is loaded at address 0xf0030
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sysbus FillWithConstantDoubleWord 0xf0000030 256
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# Setup real 15-th interrupt handler loaded at address 0xf0080
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sysbus WriteDoubleWord 0x54 0xf0000080
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# Override kernel header values.
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# For more info please refer to https://docs.kernel.org/arch/x86/zero-page.html
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# Set 'cmd_line'. Do not use APIC/ACPI as it is not implemented yet.
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sysbus WriteASCIIString 0x20000 "noapic noacpi earlyprintk=serial console=ttyS0 root=/dev/vda rw"
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# Set address of 'cmd_line' in `cmd_line_ptr` field
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sysbus WriteDoubleWord 0x10228 0x20000
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# Set 'type_of_loader' to undefined
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sysbus WriteByte 0x10210 0xff
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# Set 'heap_end_ptr'
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sysbus WriteWord 0x10212 0xfe00
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# Set 'loadflags' with 'LOADED_HIGH' and 'CAN_USE_HEAP' flags
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sysbus WriteByte 0x10211 0x81
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# Set SegmentRegisters to start in real-mode
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sysbus.cpu SetDescriptor CS 0x1000 0x10000 0xffff 0x9b00
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sysbus.cpu SetDescriptor DS 0x1000 0x10000 0xffff 0x9300
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sysbus.cpu SetDescriptor ES 0x1000 0x10000 0xffff 0x9300
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sysbus.cpu SetDescriptor SS 0x1000 0x10000 0xffff 0x9300
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sysbus.cpu SetDescriptor FS 0x1000 0x10000 0xffff 0x9300
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sysbus.cpu SetDescriptor GS 0x1000 0x10000 0xffff 0x9300
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# Set entrypoint to 0x10200 = (CS << 4) + RIP
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sysbus.cpu RIP 0x200
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# Set to safe, available memory
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sysbus.cpu RBP 0x8000
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sysbus.cpu RSP 0x8000
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# Set IF flag
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sysbus.cpu EFLAGS 0x202
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"""
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runMacro $reset
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logLevel 3
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