From 305801c89435b3fbaae35ee114898385524fa95d Mon Sep 17 00:00:00 2001
From: Nicholas Dietz <github@poleguy.com>
Date: Mon, 15 Jun 2026 17:26:59 -0500
Subject: [PATCH] spiFlashdb: add Winbond W25Q256PW (0xef6019, 0xef8019)

---
 src/spiFlashdb.hpp | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/src/spiFlashdb.hpp b/src/spiFlashdb.hpp
index 0fdebec..7b17324 100644
--- a/src/spiFlashdb.hpp
+++ b/src/spiFlashdb.hpp
@@ -766,6 +766,40 @@ static std::map <uint32_t, flash_t> flash_list = {
 		.quad_mask = 0,
 		.global_lock = false,
 	}},
+	{0xef6019, {
+		/* Winbond W25Q25PW (1.8V), 256 Mbit / 32 MiB. Requires 4-byte addressing. */
+		.manufacturer = "Winbond",
+		.model = "W25Q25PW",
+		.nr_sector = 512,
+		.sector_erase = true,
+		.subsector_erase = true,
+		.has_extended = false,
+		.tb_otp = false,
+		.tb_offset = (1 << 6),  // TB (SR1 S6)
+		.tb_register = STATR,
+		.bp_len = 4,
+		.bp_offset = {(1 << 2), (1 << 3), (1 << 4), (1 << 5)},
+		.quad_register = CONFR,
+		.quad_mask = (1 << 1),  // QE = SR2 S9 = bit1 of byte read by RDSR-2 (0x35)
+		.global_lock = false,
+	}},
+	{0xef8019, {
+		/* Winbond W25Q25PW newer-gen die that reports memory-type 0x80. */
+		.manufacturer = "Winbond",
+		.model = "W25Q25PW",
+		.nr_sector = 512,
+		.sector_erase = true,
+		.subsector_erase = true,
+		.has_extended = false,
+		.tb_otp = false,
+		.tb_offset = (1 << 6),  // TB (SR1 S6)
+		.tb_register = STATR,
+		.bp_len = 4,
+		.bp_offset = {(1 << 2), (1 << 3), (1 << 4), (1 << 5)},
+		.quad_register = CONFR,
+		.quad_mask = (1 << 1),  // QE = SR2 S9 = bit1 of byte read by RDSR-2 (0x35)
+		.global_lock = false,
+	}},
 	{0x6bbb14, {
 		.manufacturer = "Everspin",
 		.model = "EM008LX",