diff --git a/am29f040b.c b/am29f040b.c
index cfa6c49..62774ba 100644
--- a/am29f040b.c
+++ b/am29f040b.c
@@ -20,8 +20,7 @@
 
 #include "flash.h"
 
-/* FIMXE: check that the 2 second delay is really needed.
-          Use erase_sector_jedec if not? */
+/* FIMXE: Use erase_sector_jedec if not? */
 int erase_sector_29f040b(struct flashchip *flash, unsigned int address, unsigned int blocklen)
 {
 	chipaddr bios = flash->virtual_memory;
@@ -33,7 +32,7 @@
 	chip_writeb(0x55, bios + 0x2AA);
 	chip_writeb(0x30, bios + address);
 
-	programmer_delay(2 * 1000 * 1000);
+	programmer_delay(10);
 
 	/* wait for Toggle bit ready         */
 	toggle_ready_jedec(bios + address);
diff --git a/chipdrivers.h b/chipdrivers.h
index a4e1273..adcb46d 100644
--- a/chipdrivers.h
+++ b/chipdrivers.h
@@ -97,7 +97,8 @@
 /* m29f400bt.c */
 int probe_m29f400bt(struct flashchip *flash);
 int erase_m29f400bt(struct flashchip *flash);
-int block_erase_m29f400bt(struct flashchip *flash, int start, int len);
+int block_erase_m29f400bt(struct flashchip *flash, unsigned int start, unsigned int len);
+int block_erase_chip_m29f400bt(struct flashchip *flash, unsigned int start, unsigned int len);
 int write_m29f400bt(struct flashchip *flash, uint8_t *buf);
 int write_coreboot_m29f400bt(struct flashchip *flash, uint8_t *buf);
 void protect_m29f400bt(chipaddr bios);
@@ -107,6 +108,8 @@
 /* mx29f002.c */
 int probe_29f002(struct flashchip *flash);
 int erase_29f002(struct flashchip *flash);
+int erase_chip_29f002(struct flashchip *flash, unsigned int addr, unsigned int blocklen);
+int erase_sector_29f002(struct flashchip *flash, unsigned int address, unsigned int blocklen);
 int write_29f002(struct flashchip *flash, uint8_t *buf);
 
 /* pm49fl00x.c */
diff --git a/flashchips.c b/flashchips.c
index bf38c4b..59f9139 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -1166,7 +1166,22 @@
 		.tested		= TEST_UNTESTED,
 		.probe		= probe_29f002,
 		.probe_timing	= TIMING_IGNORED, /* routine don't use probe_timing (mx29f002.c) */
-		.erase		= erase_29f002,
+		.erase		= NULL,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { 
+					{16 * 1024, 1},
+					{8 * 1024, 2},
+					{32 * 1024, 1},
+					{64 * 1024, 3},
+				},
+				.block_erase = erase_sector_29f002,
+			}, {
+				.eraseblocks = { {256 * 1024, 1} },
+				.block_erase = erase_chip_29f002,
+			},
+		},
 		.write		= write_jedec_1,
 		.read		= read_memmapped,
 	},
@@ -1179,10 +1194,25 @@
 		.model_id	= AMIC_A29002T,
 		.total_size	= 256,
 		.page_size	= 64 * 1024,
-		.tested		= TEST_OK_PRE,
+		.tested		= TEST_OK_PR,
 		.probe		= probe_29f002,
 		.probe_timing	= TIMING_IGNORED, /* routine don't use probe_timing (mx29f002.c) */
-		.erase		= erase_29f002,
+		.erase		= NULL,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { 
+					{64 * 1024, 3},
+					{32 * 1024, 1},
+					{8 * 1024, 2},
+					{16 * 1024, 1},
+				},
+				.block_erase = erase_sector_29f002,
+			}, {
+				.eraseblocks = { {256 * 1024, 1} },
+				.block_erase = erase_chip_29f002,
+			},
+		},
 		.write		= write_jedec_1,
 		.read		= read_memmapped,
 	},
@@ -1448,7 +1478,23 @@
 		.tested		= TEST_OK_PROBE,
 		.probe		= probe_spi_rdid,
 		.probe_timing	= TIMING_ZERO,
-		.erase		= spi_chip_erase_60_c7,
+		.erase		= NULL,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { {4 * 1024, 2048} },
+				.block_erase = spi_block_erase_20,
+			}, {
+				.eraseblocks = { {4 * 1024, 2048} },
+				.block_erase = spi_block_erase_d8,
+			}, {
+				.eraseblocks = { {8 * 1024 * 1024, 1} },
+				.block_erase = spi_block_erase_60,
+			}, {
+				.eraseblocks = { {8 * 1024 * 1024, 1} },
+				.block_erase = spi_block_erase_c7,
+			},
+		},
 		.write		= spi_chip_write_256,
 		.read		= spi_chip_read,
 	},
@@ -1512,7 +1558,22 @@
 		.tested		= TEST_UNTESTED,
 		.probe		= probe_jedec,
 		.probe_timing	= TIMING_ZERO,	/* Datasheet has no timing info specified */
-		.erase		= erase_chip_jedec,
+		.erase		= NULL,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { 
+					{64 * 1024, 3},
+					{32 * 1024, 1},
+					{8 * 1024, 2},
+					{16 * 1024, 1},
+				},
+				.block_erase = erase_sector_jedec,
+			}, {
+				.eraseblocks = { {256 * 1024, 1} },
+				.block_erase = erase_chip_block_jedec,
+			},
+		},
 		.write		= write_jedec_1,
 		.read		= read_memmapped,
 	},
@@ -1525,10 +1586,25 @@
 		.model_id	= EN_29F002T,
 		.total_size	= 256,
 		.page_size	= 256,
-		.tested		= TEST_OK_PRE,
+		.tested		= TEST_OK_PR,
 		.probe		= probe_jedec,
 		.probe_timing	= TIMING_ZERO,	/* Datasheet has no timing info specified */
-		.erase		= erase_chip_jedec,
+		.erase		= NULL,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { 
+					{16 * 1024, 1},
+					{8 * 1024, 2},
+					{32 * 1024, 1},
+					{64 * 1024, 3},
+				},
+				.block_erase = erase_sector_jedec,
+			}, {
+				.eraseblocks = { {256 * 1024, 1} },
+				.block_erase = erase_chip_block_jedec,
+			},
+		},
 		.write		= write_jedec_1,
 		.read		= read_memmapped,
 	},
@@ -1545,6 +1621,21 @@
 		.probe		= probe_jedec,
 		.probe_timing	= TIMING_ZERO,	/* Datasheet has no timing info specified */
 		.erase		= NULL,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { 
+					{16 * 1024, 1},
+					{8 * 1024, 2},
+					{32 * 1024, 1},
+					{64 * 1024, 7},
+				},
+				.block_erase = erase_sector_29f040b,
+			}, {
+				.eraseblocks = { {512 * 1024, 1} },
+				.block_erase = erase_chip_29f040b,
+			},
+		},
 		.write		= NULL,
 		.read		= read_memmapped,
 	},
@@ -1561,6 +1652,21 @@
 		.probe		= probe_jedec,
 		.probe_timing	= TIMING_ZERO,	/* Datasheet has no timing info specified */
 		.erase		= NULL,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { 
+					{64 * 1024, 7},
+					{32 * 1024, 1},
+					{8 * 1024, 2},
+					{16 * 1024, 1},
+				},
+				.block_erase = erase_sector_29f040b,
+			}, {
+				.eraseblocks = { {512 * 1024, 1} },
+				.block_erase = erase_chip_29f040b,
+			},
+		},
 		.write		= NULL,
 		.read		= read_memmapped,
 	},
@@ -1576,7 +1682,22 @@
 		.tested		= TEST_UNTESTED,
 		.probe		= probe_m29f400bt,
 		.probe_timing	= TIMING_IGNORED, /* routine don't use probe_timing (m29f400bt.c) */
-		.erase		= erase_m29f400bt,
+		.erase		= NULL,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { 
+					{16 * 1024, 1},
+					{8 * 1024, 2},
+					{32 * 1024, 1},
+					{64 * 1024, 7},
+				},
+				.block_erase = block_erase_m29f400bt,
+			}, {
+				.eraseblocks = { {512 * 1024, 1} },
+				.block_erase = block_erase_chip_m29f400bt,
+			},
+		},
 		.write		= write_coreboot_m29f400bt,
 		.read		= read_memmapped,
 	},
@@ -1592,7 +1713,22 @@
 		.tested		= TEST_UNTESTED,
 		.probe		= probe_m29f400bt,
 		.probe_timing	= TIMING_IGNORED, /* routine don't use probe_timing (m29f400bt.c) */
-		.erase		= erase_m29f400bt,
+		.erase		= NULL,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { 
+					{64 * 1024, 7},
+					{32 * 1024, 1},
+					{8 * 1024, 2},
+					{16 * 1024, 1},
+				},
+				.block_erase = block_erase_m29f400bt,
+			}, {
+				.eraseblocks = { {512 * 1024, 1} },
+				.block_erase = block_erase_chip_m29f400bt,
+			},
+		},
 		.write		= write_coreboot_m29f400bt,
 		.read		= read_memmapped,
 	},
@@ -1892,10 +2028,26 @@
 		.model_id	= MX_25L3205,
 		.total_size	= 4096,
 		.page_size	= 256,
-		.tested		= TEST_OK_PREW,
+		.tested		= TEST_OK_PRW,
 		.probe		= probe_spi_rdid,
 		.probe_timing	= TIMING_ZERO,
-		.erase		= spi_chip_erase_60_c7,
+		.erase		= NULL,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = { {4 * 1024, 1024} },
+				.block_erase = spi_block_erase_20,
+			}, {
+				.eraseblocks = { {4 * 1024, 1024} },
+				.block_erase = spi_block_erase_d8,
+			}, {
+				.eraseblocks = { {4 * 1024 * 1024, 1} },
+				.block_erase = spi_block_erase_60,
+			}, {
+				.eraseblocks = { {4 * 1024 * 1024, 1} },
+				.block_erase = spi_block_erase_c7,
+			},
+		},
 		.write		= spi_chip_write_256,
 		.read		= spi_chip_read,
 	},
@@ -1991,7 +2143,22 @@
 		.tested		= TEST_UNTESTED,
 		.probe		= probe_29f002,
 		.probe_timing	= TIMING_IGNORED, /* routine don't use probe_timing (mx29f002.c) */
-		.erase		= erase_29f002,
+		.erase		= NULL,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = {
+					{16 * 1024, 1},
+					{8 * 1024, 2},
+					{32 * 1024, 1},
+					{64 * 1024, 3},
+				},
+				.block_erase = erase_sector_29f002,	/* This erase function has 64k blocksize for eLiteFlash */
+			}, {
+				.eraseblocks = { {256 * 1024, 1} },
+				.block_erase = erase_chip_29f002,
+			},
+		},
 		.write		= write_jedec_1,
 		.read		= read_memmapped,
 	},
@@ -2004,10 +2171,25 @@
 		.model_id	= MX_29F002T,
 		.total_size	= 256,
 		.page_size	= 64 * 1024,
-		.tested		= TEST_OK_PRE,
+		.tested		= TEST_OK_PR,
 		.probe		= probe_29f002,
 		.probe_timing	= TIMING_IGNORED, /* routine don't use probe_timing (mx29f002.c) */
-		.erase		= erase_29f002,
+		.erase		= NULL,
+		.block_erasers	=
+		{
+			{
+				.eraseblocks = {
+					{64 * 1024, 3},
+					{32 * 1024, 1},
+					{8 * 1024, 2},
+					{16 * 1024, 1},
+				},
+				.block_erase = erase_sector_29f002,	/* This erase function has 64k blocksize for eLiteFlash */
+			}, {
+				.eraseblocks = { {256 * 1024, 1} },
+				.block_erase = erase_chip_29f002,
+			},
+		},
 		.write		= write_jedec_1,
 		.read		= read_memmapped,
 	},
diff --git a/m29f400bt.c b/m29f400bt.c
index c327f44..e77572a 100644
--- a/m29f400bt.c
+++ b/m29f400bt.c
@@ -102,7 +102,7 @@
 	return 0;
 }
 
-int block_erase_m29f400bt(struct flashchip *flash, int start, int len)
+int block_erase_m29f400bt(struct flashchip *flash, unsigned int start, unsigned int len)
 {
 	chipaddr bios = flash->virtual_memory;
 	chipaddr dst = bios + start;
@@ -126,6 +126,16 @@
 	return 0;
 }
 
+int block_erase_chip_m29f400bt(struct flashchip *flash, unsigned int address, unsigned int blocklen)
+{
+	if ((address != 0) || (blocklen != flash->total_size * 1024)) {
+		fprintf(stderr, "%s called with incorrect arguments\n",
+			__func__);
+		return -1;
+	}
+	return erase_m29f400bt(flash);
+}
+
 int write_m29f400bt(struct flashchip *flash, uint8_t *buf)
 {
 	int i;
diff --git a/mx29f002.c b/mx29f002.c
index 7838c3d..411e539 100644
--- a/mx29f002.c
+++ b/mx29f002.c
@@ -43,6 +43,39 @@
 	return 0;
 }
 
+int erase_sector_29f002(struct flashchip *flash, unsigned int address, unsigned int blocklen)
+{
+	chipaddr bios = flash->virtual_memory;
+
+	chip_writeb(0xAA, bios + 0x555);
+	chip_writeb(0x55, bios + 0x2AA);
+	chip_writeb(0x80, bios + 0x555);
+	chip_writeb(0xAA, bios + 0x555);
+	chip_writeb(0x55, bios + 0x2AA);
+	chip_writeb(0x30, bios + address);
+
+	programmer_delay(10);
+
+	/* wait for Toggle bit ready         */
+	toggle_ready_jedec(bios + address);
+
+	if (check_erased_range(flash, address, blocklen)) {
+		fprintf(stderr, "ERASE FAILED!\n");
+		return -1;
+	}
+	return 0;
+}
+
+int erase_chip_29f002(struct flashchip *flash, unsigned int addr, unsigned int blocklen)
+{
+	if ((addr != 0) || (blocklen != flash->total_size * 1024)) {
+		fprintf(stderr, "%s called with incorrect arguments\n",
+			__func__);
+		return -1;
+	}
+	return erase_29f002(flash);
+}
+
 /* FIXME: Use erase_chip_jedec?
  * erase_29f002 uses shorter addresses, sends F0 (exit ID mode) and
  * and has a bigger delay before polling the toggle bit */