feat: aarch64 port - Raspberry Pi 4/400 SD boot (SDHCI, ext2 root + first-boot grow), USB hubs, PCI INTx routing, SMP, DMA fences

programs/include/Api/Syscall.hpp

@@ -312,6 +312,11 @@ namespace montauk::abi {
     static constexpr uint64_t SYS_WIN_DRAG_FORMATS     = 206;  // (serial, TransferFormatInfo*, max) -> count
     static constexpr uint64_t SYS_WIN_DRAG_GET_DATA    = 207;  // (serial, mime, buf, max, uint32_t* len) -> status
 
+    /* Storage.hpp -- grow a mounted volume (and its MBR partition) to fill the
+       free space after it. apply=0 only reports; apply=1 does one bounded slice
+       and returns 1 while more remains, 0 once done. CAP_STORAGE_ADMIN. */
+    static constexpr uint64_t SYS_FS_GROW              = 208;  // (drive, FsGrowStatus*, apply) -> 1 / 0 / status
+
     /* Kernel-owned process capabilities. User identities may namespace
        per-user resources, but never participate in authorization decisions. */
     static constexpr uint64_t CAP_PROCESS_ADMIN = 1ULL << 0;
@@ -838,7 +843,7 @@ namespace montauk::abi {
 
     struct DiskInfo {
         uint8_t  port;              // block device index
-        uint8_t  type;              // 0=none, 1=SATA, 2=SATAPI, 3=NVMe, 4=USB mass storage
+        uint8_t  type;              // 0=none, 1=SATA, 2=SATAPI, 3=NVMe, 4=USB mass storage, 5=SD card
         uint8_t  sataGen;           // SATA gen (1/2/3)
         uint8_t  _pad0;
         uint64_t sectorCount;       // Total user-addressable sectors
@@ -920,6 +925,14 @@ namespace montauk::abi {
         char     label[32];       // volume label
     };
 
+    struct FsGrowStatus {
+        uint64_t fsBytes;         // filesystem size now
+        uint64_t partBytes;       // partition size now
+        uint64_t targetBytes;     // filesystem size once grown; == fsBytes if it cannot grow
+        uint32_t stepsDone;       // progress of the grow, out of stepsTotal
+        uint32_t stepsTotal;
+    };
+
     // Bluetooth scan result (returned by SYS_BTSCAN)
     struct BtScanResult {
         uint8_t  bdAddr[6];