diff --git a/flashchips.c b/flashchips.c
index 6fa6446..c60514b 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -5353,6 +5353,99 @@
 	},
 
 	{
+		.vendor		= "ESI",
+		.name		= "ES25P40",
+		.bustype	= BUS_SPI,
+		.manufacture_id	= EXCEL_ID_NOPREFIX,
+		.model_id	= EXCEL_ES25P40,
+		.total_size	= 512,
+		.page_size	= 256,
+		/* 256-byte paramter page separate from memory array:
+		 * supports read (0x53), fast read (0x5B), erase (0xD5) and program (0x52) instructions. */
+		.feature_bits	= FEATURE_WRSR_WREN,
+		.tested		= TEST_UNTESTED,
+		.probe		= probe_spi_rdid,
+		.probe_timing	= TIMING_ZERO,
+		.block_erasers	=
+		{
+		 {
+			.eraseblocks = { {64 * 1024, 8} },
+			.block_erase = spi_block_erase_d8,
+		 }, {
+			.eraseblocks = { {512 * 1024, 1} },
+			.block_erase = spi_block_erase_c7,
+		 }
+		},
+		.printlock	= spi_prettyprint_status_register_bp2_srwd,
+		.unlock		= spi_disable_blockprotect_bp2_srwd,
+		.write		= spi_chip_write_256,
+		.read		= spi_chip_read, /* Fast Read (0x0B) supported */
+		.voltage	= {2700, 3600},
+	},
+
+	{
+		.vendor		= "ESI",
+		.name		= "ES25P80",
+		.bustype	= BUS_SPI,
+		.manufacture_id	= EXCEL_ID_NOPREFIX,
+		.model_id	= EXCEL_ES25P80,
+		.total_size	= 1024,
+		.page_size	= 256,
+		/* 256-byte paramter page separate from memory array:
+		 * supports read (0x53), fast read (0x5B), erase (0xD5) and program (0x52) instructions. */
+		.feature_bits	= FEATURE_WRSR_WREN,
+		.tested		= TEST_UNTESTED,
+		.probe		= probe_spi_rdid,
+		.probe_timing	= TIMING_ZERO,
+		.block_erasers	=
+		{
+		 {
+			.eraseblocks = { {64 * 1024, 16} },
+			.block_erase = spi_block_erase_d8,
+		 }, {
+			.eraseblocks = { {1024 * 1024, 1} },
+			.block_erase = spi_block_erase_c7,
+		 }
+		},
+		.printlock	= spi_prettyprint_status_register_bp2_srwd,
+		.unlock		= spi_disable_blockprotect_bp2_srwd,
+		.write		= spi_chip_write_256,
+		.read		= spi_chip_read, /* Fast Read (0x0B) supported */
+		.voltage	= {2700, 3600},
+	},
+
+	{
+		.vendor		= "ESI",
+		.name		= "ES25P16",
+		.bustype	= BUS_SPI,
+		.manufacture_id	= EXCEL_ID_NOPREFIX,
+		.model_id	= EXCEL_ES25P16,
+		.total_size	= 2 * 1024,
+		.page_size	= 256,
+		/* 256-byte paramter page separate from memory array:
+		 * supports read (0x53), fast read (0x5B), erase (0xD5) and program (0x52) instructions. */
+		.feature_bits	= FEATURE_WRSR_WREN,
+		.tested		= TEST_UNTESTED,
+		.probe		= probe_spi_rdid,
+		.probe_timing	= TIMING_ZERO,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { {64 * 1024, 32} },
+				.block_erase = spi_block_erase_d8,
+			}, {
+				.eraseblocks = { {2 * 1024 * 1024, 1} },
+				.block_erase = spi_block_erase_c7,
+			}
+		},
+		.printlock	= spi_prettyprint_status_register_bp2_srwd,
+		.unlock		= spi_disable_blockprotect_bp2_srwd,
+		.write		= spi_chip_write_256,
+		.read		= spi_chip_read, /* Fast Read (0x0B) supported */
+		.voltage	= {2700, 3600},
+	},
+
+	{
 		.vendor		= "Fujitsu",
 		.name		= "MBM29F004BC",
 		.bustype	= BUS_PARALLEL,