#include <palacios/vmm_types.h>
+/******************************************************************
+ Data contained in the ELF file we will attempt to boot
+******************************************************************/
+
+#define ELF_MAGIC 0x464c457f
+#define MB2_MAGIC 0xe85250d6
+
typedef struct mb_header {
uint32_t magic;
uint32_t arch;
// version of multiboot. The existence of
// this tag indicates that this special mode is
// requested
-#define MB_TAG_MB64_HRT 0xf00d
+#define MB_TAG_MB64_HRT 0xf00d
typedef struct mb_mb64_hrt {
mb_tag_t tag;
- uint32_t hrt_flags;
+ uint64_t hrt_flags;
+ // whether this kernel is relocable
+#define MB_TAG_MB64_HRT_FLAG_RELOC 0x1
+ // How to map the memory in the initial PTs
+ // highest set bit wins
+#define MB_TAG_MB64_HRT_FLAG_MAP_4KB 0x100
+#define MB_TAG_MB64_HRT_FLAG_MAP_2MB 0x200
+#define MB_TAG_MB64_HRT_FLAG_MAP_1GB 0x400
+#define MB_TAG_MB64_HRT_FLAG_MAP_512GB 0x800
+
+ // How much physical address space to map in the
+ // initial page tables (bytes)
+ //
+ uint64_t max_mem_to_map;
+ // offset of the GVA->GPA mappings (GVA of GPA 0)
+ uint64_t gva_offset;
+ // 64 bit entry address (=0 to use entry tag (which will be offset by gva_offset))
+ uint64_t gva_entry;
+ // desired address of the page the VMM, HRT, and ROS share
+ // for communication. "page" here a 4 KB quantity
+ uint64_t comm_page_gpa;
+ // desired interrupt vector that should be used for upcalls
+ // the default for this is 255
+ uint8_t hrt_int_vector;
+ uint8_t reserved[7];
+
} __attribute__((packed)) mb_mb64_hrt_t;
typedef struct mb_data {
mb_mb64_hrt_t *mb64_hrt;
} mb_data_t;
+
+
+// We are not doing:
+//
+// - BIOS Boot Device
+// - Modules
+// - ELF symbols
+// - Boot Loader name
+// - APM table
+// - VBE info
+// - Framebuffer info
+//
+
+
+
+/******************************************************************
+ Data we will pass to the kernel via rbx
+******************************************************************/
+
+#define MB2_INFO_MAGIC 0x36d76289
+
+
+typedef struct mb_info_header {
+ uint32_t totalsize;
+ uint32_t reserved;
+} __attribute__((packed)) mb_info_header_t;
+
+// A tag of type 0, size 8 indicates last value
+//
+typedef struct mb_info_tag {
+ uint32_t type;
+ uint32_t size;
+} __attribute__((packed)) mb_info_tag_t;
+
+
+#define MB_INFO_MEM_TAG 4
+typedef struct mb_info_mem {
+ mb_info_tag_t tag;
+ uint32_t mem_lower; // 0..640K in KB
+ uint32_t mem_upper; // in KB to first hole - 1 MB
+} __attribute__((packed)) mb_info_mem_t;
+
+#define MB_INFO_CMDLINE_TAG 1
+// note alignment of 8 bytes required for each...
+typedef struct mb_info_cmdline {
+ mb_info_tag_t tag;
+ uint32_t size; // includes zero termination
+ uint8_t string[]; // zero terminated
+} __attribute__((packed)) mb_info_cmdline_t;
+
+
+#define MEM_RAM 1
+#define MEM_ACPI 3
+#define MEM_RESV 4
+
+typedef struct mb_info_memmap_entry {
+ uint64_t base_addr;
+ uint64_t length;
+ uint32_t type;
+ uint32_t reserved;
+} __attribute__((packed)) mb_info_memmap_entry_t;
+
+#define MB_INFO_MEMMAP_TAG 6
+// note alignment of 8 bytes required for each...
+typedef struct mb_info_memmap {
+ mb_info_tag_t tag;
+ uint32_t entry_size; // multiple of 8
+ uint32_t entry_version; // 0
+ mb_info_memmap_entry_t entries[];
+} __attribute__((packed)) mb_info_memmap_t;
+
+#define MB_INFO_HRT_TAG 0xf00df00d
+typedef struct mb_info_hrt {
+ mb_info_tag_t tag;
+ // apic ids are 0..num_apics-1
+ // ioapics follow
+ // apic and ioapic addresses are the well known places
+ uint32_t total_num_apics;
+ // first apic the HRT owns (HRT core 0)
+ uint32_t first_hrt_apic_id;
+ // can the HRT use an ioapic?
+ uint32_t have_hrt_ioapic;
+ // if so, this is the first entry on the
+ // ioapic that can be used by the HRT
+ uint32_t first_hrt_ioapic_entry;
+ // CPU speed
+ uint64_t cpu_freq_khz;
+ // copy of the HRT flags from the kernel (indicating
+ // page table mapping type, position independence, etc.
+ // these reflect how it has actually been mapped
+ uint64_t hrt_flags;
+ // the amount of physical address space that has been mapped
+ // initially.
+ uint64_t max_mem_mapped;
+ // The first physical address the HRT should
+ // (nominally) use. Physical addresses below this are
+ // visible to the ROS
+ uint64_t first_hrt_gpa;
+ // Where the intial boot state starts in the physical address
+ // space. This includes INT HANDLER,IDT,GDT,TSS, PAGETABLES,
+ // and MBINFO, but not the scratch stacks
+ // This is essentially the content of CR3 - 1 page on boot
+ uint64_t boot_state_gpa;
+ // Where GPA 0 is mapped in the virtual address space
+ uint64_t gva_offset;
+
+ // Typically:
+ // first_hrt_vaddr==first_hrt_paddr => no address space coalescing
+ // first_hrt_vaddr>first_hrt_paddr => address space coalescing
+ // For example, first_hrt_vaddr might be set to the start of linux kernel
+ // This then allows us to coalesce user portion of the address space of
+ // a linux process and the HRT
+ // for communication. "page" here a 4 KB quantity
+
+ // address of the page the VMM, HRT, and ROS share
+ uint64_t comm_page_gpa;
+ // interrupt vector used to upcall to HRT (==0 if none)
+ // downcalls are done with HVM hypercall 0xf00df00d
+ uint8_t hrt_int_vector;
+ uint8_t reserved[7];
+} __attribute__((packed)) mb_info_hrt_t;
+
+
+
+
struct v3_vm_multiboot {
uint8_t is_multiboot;
struct v3_cfg_file *mb_file;
// There is no core structure for
// multiboot capability
+
struct v3_xml;
int v3_init_multiboot();
