diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index 4f05caf34e..428db4a1d8 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -222,7 +222,8 @@ static const FlashPartInfo known_devices[] = {
     { INFO("is25lp016d",  0x9d6015,      0,  64 << 10,  32, ER_4K) },
     { INFO("is25lp032",   0x9d6016,      0,  64 << 10,  64, ER_4K) },
     { INFO("is25lp064",   0x9d6017,      0,  64 << 10, 128, ER_4K) },
-    { INFO("is25lp128",   0x9d6018,      0,  64 << 10, 256, ER_4K) },
+    { INFO("is25lp128",   0x9d6018,      0,  64 << 10, 256, ER_4K),
+      .sfdp_read = m25p80_sfdp_is25lp128 },
     { INFO("is25lp256",   0x9d6019,      0,  64 << 10, 512, ER_4K) },
     { INFO("is25wp032",   0x9d7016,      0,  64 << 10,  64, ER_4K) },
     { INFO("is25wp064",   0x9d7017,      0,  64 << 10, 128, ER_4K) },
diff --git a/hw/block/m25p80_sfdp.c b/hw/block/m25p80_sfdp.c
index a03a291a09..6e01178299 100644
--- a/hw/block/m25p80_sfdp.c
+++ b/hw/block/m25p80_sfdp.c
@@ -479,3 +479,12 @@ static const uint8_t sfdp_is25wp256[] = {
     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 };
 define_sfdp_read(is25wp256);
+
+uint8_t m25p80_sfdp_is25lp128(uint32_t addr)
+{
+    /* The sibling parts share SFDP data except for the density field. */
+    if (addr == 0x37) {
+        return 0x07;
+    }
+    return m25p80_sfdp_is25wp256(addr);
+}
diff --git a/hw/block/m25p80_sfdp.h b/hw/block/m25p80_sfdp.h
index 35785686a0..e6bfdfa7e8 100644
--- a/hw/block/m25p80_sfdp.h
+++ b/hw/block/m25p80_sfdp.h
@@ -28,6 +28,7 @@ uint8_t m25p80_sfdp_w25q512jv(uint32_t addr);
 uint8_t m25p80_sfdp_w25q80bl(uint32_t addr);
 uint8_t m25p80_sfdp_w25q01jvq(uint32_t addr);
 
+uint8_t m25p80_sfdp_is25lp128(uint32_t addr);
 uint8_t m25p80_sfdp_is25wp256(uint32_t addr);
 
 #endif