Record networking and DMA development progress

Add the current OS source tree, build scripts, system image layout, and development notes covering DMA page allocation, e1000 bring-up, net API dispatch, and DHCP work in progress.
2026-07-02 16:17:09 +08:00
parent fbc14631e3
commit f1a2a110d7
182 changed files with 16472 additions and 0 deletions
@@ -0,0 +1,51 @@
+#ifndef UTSM_DSK_H
+#define UTSM_DSK_H
+
+#include <utsm/types.h>
+
+#define DSK_BOOT_MAGIC 0x44534B31424F4F54ULL /* "DSK1BOOT" */
+#define DSK_BOOT_ABI_VERSION 1u
+
+#define DSK_BOOT_FLAG_FROM_UTSM       (1ULL << 0)
+#define DSK_BOOT_FLAG_DKM_READY       (1ULL << 1)
+#define DSK_BOOT_FLAG_FAT32_PATH      (1ULL << 2)
+
+typedef struct dsk_boot_context {
+    u64 magic;
+    u32 abi_version;
+    u32 size;
+
+    u64 flags;
+
+    u64 hhdm_offset;
+    u64 rsdp_address;
+
+    u64 framebuffer_address;
+    u64 framebuffer_width;
+    u64 framebuffer_height;
+    u64 framebuffer_pitch;
+    u32 framebuffer_bpp;
+    u32 reserved_fb;
+
+    u64 boot_modules_response;
+
+    u64 dkm_kernel_api;
+    u64 dkm_driver_table;
+    u64 dkm_driver_count;
+
+    u64 utsm_state;
+    u64 drr_state;
+
+    u64 memory_map;
+    u64 memory_map_count;
+    u64 memory_map_entry_size;
+
+    u64 kernel_stack_top;
+    u64 reserved[8];
+} dsk_boot_context;
+
+typedef void (*dsk_entry_fn)(const dsk_boot_context *context);
+
+int dsk_load_and_jump(void);
+
+#endif