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This commit is contained in:
Linehu
2026-08-09 22:20:01 +08:00
parent 8717ea8f20
commit 2a50fa58c7
185 changed files with 19890 additions and 710 deletions
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CODE/UTSM/include/utsm/linux_loader.h
+80 -9
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@@ -103,7 +103,9 @@ struct linux_setup_header {
* 0x01000000-0x02FFFFFF : Linux kernel image
* 0x03000000-0x03FFFFFF : Linux initrd
* 0x04000000-0x040FFFFF : IPC shared memory (1MB, both kernels RW)
* 0x05000000-MAX : Linux general RAM
* 0x04100000-0x04FFFFFF : Graphics surface pool (16MB, VSCode integration Phase 1)
* 0x05000000-0x5FFFFFFF : Linux general RAM (~1.4GB, expanded Phase 1 for VSCode)
* 0xF4000000-0xF4007000 : virtio-mmio devices (8 slots, expanded Phase 1)
*/
#define LINUX_GUEST_KERNEL_GPA 0x01000000ULL /* 16 MB, 2MB-aligned */
#define LINUX_GUEST_BOOTPARAMS_GPA 0x00400000ULL /* 4 MB */
@@ -118,8 +120,19 @@ struct linux_setup_header {
#define LINUX_GUEST_IPC_SHM_GPA 0x04000000ULL /* 64 MB */
#define LINUX_GUEST_IPC_SHM_SIZE (1024 * 1024) /* 1MB */
/* General RAM starts after IPC region */
/* VSCode integration Phase 1: Graphics surface pool.
* Separate DMA region EPT-mapped into the Linux guest. Linux user-space mmaps
* /dev/utsm at this GPA to obtain a writable scanout buffer that UTSM reads
* for blitting to the Deshab framebuffer (Phase 3 virtio-gpu shadow buffer).
* 16MB accommodates a 1920×1080×4 framebuffer (~8MB) with headroom for
* cursor plane and dirty rect tracking metadata. */
#define LINUX_GUEST_SURFACE_GPA 0x04100000ULL /* 65 MB (immediately after IPC shm) */
#define LINUX_GUEST_SURFACE_SIZE (16 * 1024 * 1024) /* 16MB */
/* General RAM starts after IPC + surface regions.
* Phase 1 expansion: 1.4GB to fit VSCode + Electron + GUI stack. */
#define LINUX_GUEST_RAM_GPA 0x05000000ULL /* 80 MB */
#define LINUX_GUEST_RAM_SIZE 0x5B000000ULL /* 1.4GB (0x05000000..0x5FFFFFFF) */
/* ===== virtio-mmio device GPA layout =====
* virtio-mmio 设备放在 GPA 高位 MMIO 区（guest RAM 之上，不占用 e820 RAM）。
@@ -129,16 +142,33 @@ struct linux_setup_header {
* 这些 GPA 在 EPT 中【故意不映射】，访问时触发 EPT violation，
* 由 vmexit handler 路由到 virtio_mmio 后端模拟寄存器读写。
*
* GPA 选择 0xF4000000 起始（接近 4GB，远离 guest RAM 0x05000000-0x09000000）。 */
* GPA 选择 0xF4000000 起始（接近 4GB，远离 guest RAM 0x05000000-0x5FFFFFFF）。
*
* VSCode integration Phase 1 expansion: 槽位从 3 扩到 8，为后续阶段预留：
* slot 0: blk (Phase 1-) IRQ5
* slot 1: net (Phase 1-) IRQ6
* slot 2: rootfs (Phase 1-) IRQ7
* slot 3: keyboard (Phase 2) IRQ8 — virtio-input, evdev /dev/input/event0
* slot 4: mouse (Phase 2) IRQ9 — virtio-input, evdev /dev/input/event1
* slot 5: gpu (Phase 3) IRQ10 — virtio-gpu 2D, /dev/dri/card0
* slot 6: extra-rootfs (Phase 4) IRQ11 — persistent rw volume (/dev/vdc)
* slot 7: reserved — future use
*/
#define VIRTIO_MMIO_GPA_BASE 0xF4000000ULL
#define VIRTIO_MMIO_GPA_STRIDE 0x1000ULL /* 每个设备 4KB */
#define VIRTIO_MMIO_MAX_SLOTS 8 /* Phase 1: 3→8 */
#define VIRTIO_MMIO_BLK_GPA (VIRTIO_MMIO_GPA_BASE + 0 * VIRTIO_MMIO_GPA_STRIDE) /* 0xF4000000 */
#define VIRTIO_MMIO_NET_GPA (VIRTIO_MMIO_GPA_BASE + 1 * VIRTIO_MMIO_GPA_STRIDE) /* 0xF4001000 */
#define VIRTIO_MMIO_ROOTFS_GPA (VIRTIO_MMIO_GPA_BASE + 2 * VIRTIO_MMIO_GPA_STRIDE) /* 0xF4002000 */
#define VIRTIO_MMIO_BLK_GPA (VIRTIO_MMIO_GPA_BASE + 0 * VIRTIO_MMIO_GPA_STRIDE) /* 0xF4000000 */
#define VIRTIO_MMIO_NET_GPA (VIRTIO_MMIO_GPA_BASE + 1 * VIRTIO_MMIO_GPA_STRIDE) /* 0xF4001000 */
#define VIRTIO_MMIO_ROOTFS_GPA (VIRTIO_MMIO_GPA_BASE + 2 * VIRTIO_MMIO_GPA_STRIDE) /* 0xF4002000 */
/* VSCode integration: Phase 2/3/4 device slots (currently unused, reserved) */
#define VIRTIO_MMIO_KBD_GPA (VIRTIO_MMIO_GPA_BASE + 3 * VIRTIO_MMIO_GPA_STRIDE) /* 0xF4003000 */
#define VIRTIO_MMIO_MOUSE_GPA (VIRTIO_MMIO_GPA_BASE + 4 * VIRTIO_MMIO_GPA_STRIDE) /* 0xF4004000 */
#define VIRTIO_MMIO_GPU_GPA (VIRTIO_MMIO_GPA_BASE + 5 * VIRTIO_MMIO_GPA_STRIDE) /* 0xF4005000 */
#define VIRTIO_MMIO_EXTRA_ROOTFS_GPA (VIRTIO_MMIO_GPA_BASE + 6 * VIRTIO_MMIO_GPA_STRIDE) /* 0xF4006000 */
/* 判断 GPA 是否落在 virtio-mmio 设备区（含两端） */
#define VIRTIO_MMIO_GPA_END (VIRTIO_MMIO_GPA_BASE + 3 * VIRTIO_MMIO_GPA_STRIDE)
#define VIRTIO_MMIO_GPA_END (VIRTIO_MMIO_GPA_BASE + VIRTIO_MMIO_MAX_SLOTS * VIRTIO_MMIO_GPA_STRIDE)
#define IS_VIRTIO_MMIO_GPA(gpa) ((gpa) >= VIRTIO_MMIO_GPA_BASE && (gpa) < VIRTIO_MMIO_GPA_END)
/* ===== Linux loader API ===== */
@@ -156,6 +186,13 @@ struct linux_guest_info {
u64 pgt_gpa; /* GPA of guest page tables */
u64 gdt_gpa; /* GPA of guest GDT */
int loaded; /* 1 = successfully loaded */
/* VSCode integration Phase 1: graphics surface pool.
* Allocated as a separate DMA buffer and EPT-mapped into the guest at
* surface_gpa. Exposed to Linux user-space via UTSM_HCALL_SURFACE_INFO
* and /dev/utsm mmap (see CODE/linux/patches/utsm_hcall.c). */
u64 surface_hpa; /* Host physical address of surface pool (0 = none) */
u64 surface_gpa; /* GPA visible inside Linux guest */
u64 surface_size; /* Surface pool size in bytes */
};
/* Find the Linux bzImage boot module among Limine modules.
@@ -167,6 +204,17 @@ void *linux_find_bzimage_module(u64 *size_out);
* Exposed to Linux guest via memory-backed virtio-blk as /dev/vdb. */
void *linux_find_rootfs_module(u64 *size_out);
/* VSCode Phase 4: find the extra rootfs image boot module (path contains
* "extra"). Exposed via writable virtio-blk slot6 as /dev/vdc (overlayfs
* upper / VSCode data volume). Returns NULL when the module is absent. */
void *linux_find_extra_rootfs_module(u64 *size_out);
/* VSCode Phase 5: find the VSCode tarball boot module (path contains
* "vscode", e.g. linux-vscode.tar.gz). The tarball is streamed into the
* guest and extracted to /opt/vscode by lxc_vscode_install().
* Returns NULL when the module is absent (install skipped, non-fatal). */
void *linux_find_vscode_module(u64 *size_out);
/* Parse bzImage header and extract key parameters.
* Returns 0 on success, negative on error. */
int linux_parse_bzimage(const void *bzimage, u64 size,
@@ -181,6 +229,20 @@ int linux_loader_init(void);
/* Get the loaded Linux guest info (NULL if not loaded). */
const struct linux_guest_info *linux_get_guest_info(void);
/* VSCode integration Phase 1: query graphics surface pool.
* Returns 0 and fills outputs if the surface pool was allocated and EPT-mapped
* into the Linux guest; returns -1 if not initialized (e.g. Linux guest not
* loaded). hpa_out receives the host physical address (for UTSM-side blit),
* gpa_out receives the GPA visible inside Linux (for the guest mmap path),
* size_out receives the pool size in bytes. Any output pointer may be NULL. */
int linux_get_surface_info(u64 *hpa_out, u64 *gpa_out, u64 *size_out);
/* VSCode Phase 3: return host virtual address of the graphics surface pool.
* The virtio-gpu 2D backend composites the scanout into this buffer; the
* desktop reads it to blit guest graphics onto the IDE host area.
* Returns NULL if the pool was not allocated (Linux guest not loaded / alloc failed). */
void *linux_get_surface_vaddr(void);
/* Configure VMCS for Linux guest and perform vmlaunch.
* Must be called after vmm_init() + linux_loader_init().
* Returns 0 on successful guest termination, negative on error. */
@@ -193,13 +255,22 @@ int linux_launch(void);
* noapic/nolapic/nosmp: UTSM VMM 只模拟 legacy PIC(8259) + PIT(8254)，
* 不提供 LAPIC/IOAPIC；guest 走 XT-PIC 模式，IRQ vector = 0x30+irq。
* virtio_mmio.device=: 向 guest 声明 virtio-mmio 设备（blk@0xF4000000 IRQ5,
* net@0xF4001000 IRQ6），需 CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y。 */
* net@0xF4001000 IRQ6），需 CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y。
* VSCode Phase 2: kbd@0xF4003000 IRQ8, mouse@0xF4004000 IRQ9 (virtio-input)。
* VSCode Phase 3: gpu@0xF4005000 IRQ10 (virtio-gpu 2D, /dev/dri/card0)。
* VSCode Phase 4: xrootfs@0xF4006000 IRQ11 (可写 virtio-blk, /dev/vdc)。
* 注：slot6 无对应 boot module 时后端不注册，guest 探测会超时跳过，
* 不影响启动（virtio_mmio 对无响应设备只打一条 warn）。 */
#define LINUX_DEFAULT_CMDLINE \
"console=ttyS0,115200 earlyprintk=serial nokaslr " \
"no_timer_check loglevel=7 nohlt idle=poll " \
"noapic nolapic nosmp " \
"virtio_mmio.device=4K@0xF4000000:5 " \
"virtio_mmio.device=4K@0xF4001000:6 " \
"virtio_mmio.device=4K@0xF4002000:7"
"virtio_mmio.device=4K@0xF4002000:7 " \
"virtio_mmio.device=4K@0xF4003000:8 " \
"virtio_mmio.device=4K@0xF4004000:9 " \
"virtio_mmio.device=4K@0xF4005000:10 " \
"virtio_mmio.device=4K@0xF4006000:11"
#endif