sbl: b12 chain, slots, maze, stubs, docs current

2026-09-07 13:35:39 +00:00
parent c7e95b4194
commit 7d57f138a5
2 changed files with 57 additions and 16 deletions
@@ -108,6 +108,31 @@ def main():
    assert d[o:o + 4].hex() == 'e9f700fa', hx(d, 0x802F678)
    d[o:o + 4] = bytes.fromhex('c046c046')
    save(d, 'img0_b10.elf')
+    # b11 = b10 with installer-bl restored (redirect, installer runs again)
+    o = off(0x802F678)
+    assert d[o:o + 4].hex() == 'c046c046'
+    d[o:o + 4] = bytes.fromhex('e9f700fa')
+    save(d, 'img0_b11.elf')
+    # b12: b10-variant with jump-table entry0 NOP (fall into entry1/case-1);
+    # rebuilt from b10 base (installer stays skipped)
+    d = bytearray(base)
+    for va, (a, b) in BLX2BL.items():
+        set4(d, va, b)
+    for va, exp, new in [
+        (0x802F664, 'e4f77efc', 'c046c046'),
+        (0x802F672, 'e6f7bbfa', 'c046c046'),
+        (0x802F678, 'e9f7fef9', 'c046c046'),
+        (0x801B71E, '9847fee7', 'c046c046'),
+        (0x8008396, 'fef780f9', 'c046c046'),
+        (0x8016184, 'fdf790fc', 'c046c046'),
+        (0x801B76C, '280b0508', '00000708'),
+    ]:
+        assert hx(d, va) == exp, (hex(va), hx(d, va))
+        set4(d, va, new)
+    o = off(0x8013AA8)
+    assert d[o:o + 4].hex() == '07f026be', hx(d, 0x8013AA8)
+    d[o:o + 4] = bytes.fromhex('c046c046')
+    save(d, 'img0_b12.elf')


 if __name__ == '__main__':