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https://github.com/cloud-hypervisor/cloud-hypervisor.git
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vmm: x86_64: Split legacy firmware loading into own function
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
parent
80f7d62e1c
commit
6988da79d2
@ -990,6 +990,52 @@ impl Vm {
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})
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})
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}
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}
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#[cfg(target_arch = "x86_64")]
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fn load_firmware(
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mut firmware: File,
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memory_manager: &Arc<Mutex<MemoryManager>>,
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) -> Result<EntryPoint> {
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// Not an ELF header - assume raw binary data / firmware
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let size = firmware
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.seek(SeekFrom::End(0))
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.map_err(Error::FirmwareFile)?;
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// The OVMF firmware is as big as you might expect and it's 4MiB so limit to that
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if size > 4 << 20 {
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return Err(Error::FirmwareTooLarge);
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}
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// Loaded at the end of the 4GiB
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let load_address = GuestAddress(4 << 30)
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.checked_sub(size)
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.ok_or(Error::FirmwareTooLarge)?;
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info!(
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"Loading RAW firmware at 0x{:x} (size: {})",
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load_address.raw_value(),
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size
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);
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memory_manager
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.lock()
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.unwrap()
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.add_ram_region(load_address, size as usize)
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.map_err(Error::AllocateFirmwareMemory)?;
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firmware
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.seek(SeekFrom::Start(0))
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.map_err(Error::FirmwareFile)?;
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memory_manager
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.lock()
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.unwrap()
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.guest_memory()
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.memory()
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.read_exact_from(load_address, &mut firmware, size as usize)
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.map_err(Error::FirmwareLoad)?;
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Ok(EntryPoint { entry_addr: None })
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}
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#[cfg(target_arch = "x86_64")]
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#[cfg(target_arch = "x86_64")]
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fn load_kernel(
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fn load_kernel(
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mut kernel: File,
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mut kernel: File,
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@ -1011,45 +1057,7 @@ impl Vm {
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) {
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) {
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Ok(entry_addr) => entry_addr,
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Ok(entry_addr) => entry_addr,
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Err(e) => match e {
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Err(e) => match e {
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Elf(InvalidElfMagicNumber) => {
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Elf(InvalidElfMagicNumber) => return Self::load_firmware(kernel, &memory_manager),
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// Not an ELF header - assume raw binary data / firmware
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let size = kernel.seek(SeekFrom::End(0)).map_err(Error::FirmwareFile)?;
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// The OVMF firmware is as big as you might expect and it's 4MiB so limit to that
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if size > 4 << 20 {
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return Err(Error::FirmwareTooLarge);
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}
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// Loaded at the end of the 4GiB
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let load_address = GuestAddress(4 << 30)
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.checked_sub(size)
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.ok_or(Error::FirmwareTooLarge)?;
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info!(
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"Loading RAW firmware at 0x{:x} (size: {})",
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load_address.raw_value(),
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size
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);
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memory_manager
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.lock()
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.unwrap()
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.add_ram_region(load_address, size as usize)
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.map_err(Error::AllocateFirmwareMemory)?;
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kernel
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.seek(SeekFrom::Start(0))
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.map_err(Error::FirmwareFile)?;
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memory_manager
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.lock()
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.unwrap()
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.guest_memory()
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.memory()
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.read_exact_from(load_address, &mut kernel, size as usize)
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.map_err(Error::FirmwareLoad)?;
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return Ok(EntryPoint { entry_addr: None });
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}
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_ => {
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_ => {
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return Err(Error::KernelLoad(e));
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return Err(Error::KernelLoad(e));
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}
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}
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