vgsp: eng62 - fill missing golden SA entries (slot 34 DRAW_IAB = IR 0x265), default off

The golden overlay writes all 55 slot bodies, but the CALL_MME_MACRO(34)
DRAW_IAB run targets SA[34]; the client's captured SA table only covered
slots 0-11 (c772), so slot 34 resolved to IR 0 (the slot-0 body) and the
macro never produced mac=0x22. Add sema_gl_mme_sa_golden_fill (bool, 0):
for every slot whose client SA entry is missing/zero and whose golden body
exists (kernel/golden-mme-tu104.h golden_mme_tu104_sa[64]), set the SA entry
to the golden body's IR entry (slot 34 = 0x265, 75 words) and mark it
present. Nonzero client entries are never overwritten. Fill runs in the
golden overlay, in the submit path before the stub/call-drop walk, and in
the SA re-arm (the release-carrier path); the release path re-fetches and
emits the filled 0x11c pairs. New MME-GOLDEN sa-fill/sa-census receipts.

c774 proves the fill: `MME-GOLDEN sa-fill slot=34 entry=0x265
(client=missing)`. Enable in params-r1624. Build rc 0; the mac=0x22
validation needs a c772-class release boot.

1 files changed, 24 insertions, 0 deletions

diff --git a/kernel/gsp_sema_service.c b/kernel/gsp_sema_service.c
index 26d3b1a..603e9f0 100644
--- a/kernel/gsp_sema_service.c
+++ b/kernel/gsp_sema_service.c
@@ -20364,6 +20364,30 @@ static void svc_mme_sa_record(u32 slot, u32 entry)
 	svc_mme_sa_present |= 1ull << slot;
 }
 
+/*
+ * Golden SA completion (sema_gl_mme_sa_golden_fill): publish a slot's
+ * golden IR entry into the host-side START-ADDRESS RAM table when the
+ * client's own 0x11c/0x120 runs never supplied it (present bit clear, or
+ * present with entry 0 - the r1231 "SA[34]=0 lands last" shape). A
+ * nonzero client entry is never overwritten: the client's own upload is
+ * always the authority. The GR builder calls this before its per-launch
+ * SA re-arm and its stub/call-drop decisions, so a golden-served slot
+ * (e.g. DRAW_IAB slot 34 -> IR 0x265) resolves to the same IR offset the
+ * pack overlay wrote instead of jumping to macro 0.
+ */
+bool gsp_sema_mme_sa_fill(u32 slot, u32 entry)
+{
+	if (slot >= 64u)
+		return false;
+	if ((READ_ONCE(svc_mme_sa_present) & (1ull << slot)) &&
+	    svc_mme_sa_entry[slot])
+		return false;
+	WRITE_ONCE(svc_mme_sa_entry[slot], entry);
+	WRITE_ONCE(svc_mme_sa_present,
+		   READ_ONCE(svc_mme_sa_present) | (1ull << slot));
+	return true;
+}
+
 static bool svc_mme_setup_run_addr(u32 addr)
 {
 	return (addr >= 0x114u && addr <= 0x124u) || addr == 0x234u ||