diff options
Diffstat (limited to 'x86_64/src/lib.rs')
-rw-r--r-- | x86_64/src/lib.rs | 43 |
1 files changed, 38 insertions, 5 deletions
diff --git a/x86_64/src/lib.rs b/x86_64/src/lib.rs index 2857bb7..ed5637d 100644 --- a/x86_64/src/lib.rs +++ b/x86_64/src/lib.rs @@ -16,6 +16,10 @@ extern crate resources; extern crate sync; extern crate sys_util; +mod fdt; + +const X86_64_FDT_MAX_SIZE: u64 = 0x200000; + #[allow(dead_code)] #[allow(non_upper_case_globals)] #[allow(non_camel_case_types)] @@ -36,6 +40,7 @@ impl Clone for bootparam::boot_params { } // boot_params is just a series of ints, it is safe to initialize it. unsafe impl data_model::DataInit for bootparam::boot_params {} +unsafe impl data_model::DataInit for bootparam::setup_data {} #[allow(dead_code)] #[allow(non_upper_case_globals)] @@ -159,11 +164,14 @@ const X86_64_IRQ_BASE: u32 = 5; fn configure_system( guest_mem: &GuestMemory, + _mem_size: u64, kernel_addr: GuestAddress, cmdline_addr: GuestAddress, cmdline_size: usize, num_cpus: u8, pci_irqs: Vec<(u32, PciInterruptPin)>, + android_fstab: &mut Option<File>, + kernel_end: u64, ) -> Result<()> { const EBDA_START: u64 = 0x0009fc00; const KERNEL_BOOT_FLAG_MAGIC: u16 = 0xaa55; @@ -178,12 +186,18 @@ fn configure_system( let mut params: boot_params = Default::default(); + let kernel_end_aligned = (((kernel_end + 64 - 1) / 64) * 64) + 64; + let dtb_start = GuestAddress(kernel_end_aligned); + params.hdr.type_of_loader = KERNEL_LOADER_OTHER; params.hdr.boot_flag = KERNEL_BOOT_FLAG_MAGIC; params.hdr.header = KERNEL_HDR_MAGIC; params.hdr.cmd_line_ptr = cmdline_addr.offset() as u32; params.hdr.cmdline_size = cmdline_size as u32; params.hdr.kernel_alignment = KERNEL_MIN_ALIGNMENT_BYTES; + if android_fstab.is_some() { + params.hdr.setup_data = dtb_start.offset(); + } add_e820_entry(&mut params, 0, EBDA_START, E820_RAM)?; @@ -220,6 +234,14 @@ fn configure_system( .write_obj_at_addr(params, zero_page_addr) .map_err(|_| Error::ZeroPageSetup)?; + if let Some(fstab) = android_fstab { + fdt::create_fdt( + X86_64_FDT_MAX_SIZE as usize, + guest_mem, + dtb_start.offset(), + fstab, + )?; + } Ok(()) } @@ -317,13 +339,16 @@ impl arch::LinuxArch for X8664arch { // separate out load_kernel from other setup to get a specific error for // kernel loading - Self::load_kernel(&mem, &mut components.kernel_image)?; + let kernel_end = Self::load_kernel(&mem, &mut components.kernel_image)?; + Self::setup_system_memory( &mem, components.memory_mb, vcpu_count, &CString::new(cmdline).unwrap(), pci_irqs, + components.android_fstab, + kernel_end, )?; Ok(RunnableLinuxVm { @@ -348,9 +373,12 @@ impl X8664arch { /// /// * `mem` - The memory to be used by the guest. /// * `kernel_image` - the File object for the specified kernel. - fn load_kernel(mem: &GuestMemory, mut kernel_image: &mut File) -> Result<()> { - kernel_loader::load_kernel(mem, GuestAddress(KERNEL_START_OFFSET), &mut kernel_image)?; - Ok(()) + fn load_kernel(mem: &GuestMemory, mut kernel_image: &mut File) -> Result<u64> { + Ok(kernel_loader::load_kernel( + mem, + GuestAddress(KERNEL_START_OFFSET), + &mut kernel_image, + )?) } /// Configures the system memory space should be called once per vm before @@ -363,19 +391,24 @@ impl X8664arch { /// * `cmdline` - the kernel commandline fn setup_system_memory( mem: &GuestMemory, - _mem_size: u64, + mem_size: u64, vcpu_count: u32, cmdline: &CStr, pci_irqs: Vec<(u32, PciInterruptPin)>, + mut android_fstab: Option<File>, + kernel_end: u64, ) -> Result<()> { kernel_loader::load_cmdline(mem, GuestAddress(CMDLINE_OFFSET), cmdline)?; configure_system( mem, + mem_size, GuestAddress(KERNEL_START_OFFSET), GuestAddress(CMDLINE_OFFSET), cmdline.to_bytes().len() + 1, vcpu_count as u8, pci_irqs, + &mut android_fstab, + kernel_end, )?; Ok(()) } |