b29: S18 poll-epilogue router

qemu/run-sbl.sh

@@ -5,7 +5,7 @@
 set -e
 cd "$(dirname "$0")/.."
 QEMU=~/qemu-src/qemu-8.2.2/build/qemu-system-arm
-B=${1:-b28}
+B=${1:-b29}
 IMG=fw/img/emmc-real.img
 if [ ! -f "$IMG" ]; then
   echo "no $IMG — сначала: python3 tools/ffu_extract.py fw/dl/RM1127_059X5R5_orig.ffu --emmc-user fw/img/user-real.bin"

qemu/saimaa.c

@@ -692,6 +692,21 @@ static void saimaa_machine_init(MachineState *machine)
                     cpu_physical_memory_write(0x08006C88 + k, &word, 4);
                 }
             }
+            /* S18 stublet at 0x08006D22 (10B, b29): poll-epilogue router.
+             * movw/movt ip + bx ip to sbl_main 0x802f6a9. */
+            {
+                static const uint8_t s18[] = {
+                    0x4f, 0xf2, 0xa9, 0x6c, 0xc0, 0xf6, 0x02, 0x0c,
+                    0x60, 0x47,
+                };
+                size_t k;
+                for (k = 0; k < sizeof(s18); k += 4) {
+                    uint32_t word = 0;
+                    size_t n = sizeof(s18) - k < 4 ? sizeof(s18) - k : 4;
+                    __builtin_memcpy(&word, &s18[k], n);
+                    cpu_physical_memory_write(0x08006D22 + k, &word, 4);
+                }
+            }
             /* S17 safe-logger (50B @0x08006CF0, b26): print r1-string
              * via UARTDM-TF iff r1 in rodata [0x804B800,0x8058000);
              * pop-return (no leak). Replaces S8 silence with logs. */