From: Gabor Juhos <juhosg@openwrt.org>
Date: Tue, 31 Aug 2010 20:06:38 +0000 (+0000)
Subject: generic: fix erase operation on the pm25lv flash chip
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7782fcf8746bd43f5815432a6bde8471793ffa27;p=openwrt%2Fstaging%2Fldir.git

generic: fix erase operation on the pm25lv flash chip

SVN-Revision: 22861
---

diff --git a/target/linux/generic/patches-2.6.32/084-mtd_m25p80_add_pm25lv_flash_support.patch b/target/linux/generic/patches-2.6.32/084-mtd_m25p80_add_pm25lv_flash_support.patch
index ce70690182..1e31e3bc85 100644
--- a/target/linux/generic/patches-2.6.32/084-mtd_m25p80_add_pm25lv_flash_support.patch
+++ b/target/linux/generic/patches-2.6.32/084-mtd_m25p80_add_pm25lv_flash_support.patch
@@ -1,13 +1,39 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -626,6 +626,10 @@ static struct flash_info __devinitdata m
+@@ -42,6 +42,7 @@
+ #define	OPCODE_BE_4K		0x20	/* Erase 4KiB block */
+ #define	OPCODE_BE_32K		0x52	/* Erase 32KiB block */
+ #define	OPCODE_CHIP_ERASE	0xc7	/* Erase whole flash chip */
++#define	OPCODE_BE_4K_ALT	0xd7	/* Erase 4KiB block */
+ #define	OPCODE_SE		0xd8	/* Sector erase (usually 64KiB) */
+ #define	OPCODE_RDID		0x9f	/* Read JEDEC ID */
+ 
+@@ -599,6 +600,7 @@ struct flash_info {
+ 
+ 	u16		flags;
+ #define	SECT_4K		0x01		/* OPCODE_BE_4K works uniformly */
++#define	SECT_4K_ALT	0x02		/* OPCODE_BE_4K_ALT works uniformly */
+ };
+ 
+ 
+@@ -626,6 +628,10 @@ static struct flash_info __devinitdata m
  	{ "mx25l12805d", 0xc22018, 0, 64 * 1024, 256, },
  	{ "mx25l12855e", 0xc22618, 0, 64 * 1024, 256, },
  
 +	/* PMC -- pm25x "blocks" are 32K, sectors are 4K */
-+	{ "pm25lv512", 0, 0, 32 * 1024, 2, SECT_4K },
-+	{ "pm25lv010", 0, 0, 32 * 1024, 4, SECT_4K },
++	{ "pm25lv512", 0, 0, 32 * 1024, 2, SECT_4K_ALT },
++	{ "pm25lv010", 0, 0, 32 * 1024, 4, SECT_4K_ALT },
 +
  	/* Spansion -- single (large) sector size only, at least
  	 * for the chips listed here (without boot sectors).
  	 */
+@@ -807,6 +813,9 @@ static int __devinit m25p_probe(struct s
+ 	if (info->flags & SECT_4K) {
+ 		flash->erase_opcode = OPCODE_BE_4K;
+ 		flash->mtd.erasesize = 4096;
++	} else if (info->flags & SECT_4K_ALT) {
++		flash->erase_opcode = OPCODE_BE_4K_ALT;
++		flash->mtd.erasesize = 4096;
+ 	} else {
+ 		flash->erase_opcode = OPCODE_SE;
+ 		flash->mtd.erasesize = info->sector_size;
diff --git a/target/linux/generic/patches-2.6.32/085-mtd_m25p80_add_en25pxx_support.patch b/target/linux/generic/patches-2.6.32/085-mtd_m25p80_add_en25pxx_support.patch
index 21555848ef..348e390e26 100644
--- a/target/linux/generic/patches-2.6.32/085-mtd_m25p80_add_en25pxx_support.patch
+++ b/target/linux/generic/patches-2.6.32/085-mtd_m25p80_add_en25pxx_support.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -626,6 +626,10 @@ static struct flash_info __devinitdata m
+@@ -628,6 +628,10 @@ static struct flash_info __devinitdata m
  	{ "mx25l12805d", 0xc22018, 0, 64 * 1024, 256, },
  	{ "mx25l12855e", 0xc22618, 0, 64 * 1024, 256, },
  
@@ -9,5 +9,5 @@
 +	{ "en25p64", 0x1c2017, 0, 64 * 1024, 128, },
 +
  	/* PMC -- pm25x "blocks" are 32K, sectors are 4K */
- 	{ "pm25lv512", 0, 0, 32 * 1024, 2, SECT_4K },
- 	{ "pm25lv010", 0, 0, 32 * 1024, 4, SECT_4K },
+ 	{ "pm25lv512", 0, 0, 32 * 1024, 2, SECT_4K_ALT },
+ 	{ "pm25lv010", 0, 0, 32 * 1024, 4, SECT_4K_ALT },
diff --git a/target/linux/generic/patches-2.6.32/086-mtd_m25p80_add_xxxs33b_support.patch b/target/linux/generic/patches-2.6.32/086-mtd_m25p80_add_xxxs33b_support.patch
index 83d5cddf18..16c21aa586 100644
--- a/target/linux/generic/patches-2.6.32/086-mtd_m25p80_add_xxxs33b_support.patch
+++ b/target/linux/generic/patches-2.6.32/086-mtd_m25p80_add_xxxs33b_support.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -630,6 +630,11 @@ static struct flash_info __devinitdata m
+@@ -632,6 +632,11 @@ static struct flash_info __devinitdata m
  	{ "en25p32", 0x1c2016, 0, 64 * 1024,  64, },
  	{ "en25p64", 0x1c2017, 0, 64 * 1024, 128, },
  
@@ -10,9 +10,9 @@
 +	{ "640s33b",  0x898913, 0, 64 * 1024, 128, },
 +
  	/* PMC -- pm25x "blocks" are 32K, sectors are 4K */
- 	{ "pm25lv512", 0, 0, 32 * 1024, 2, SECT_4K },
- 	{ "pm25lv010", 0, 0, 32 * 1024, 4, SECT_4K },
-@@ -784,11 +789,12 @@ static int __devinit m25p_probe(struct s
+ 	{ "pm25lv512", 0, 0, 32 * 1024, 2, SECT_4K_ALT },
+ 	{ "pm25lv010", 0, 0, 32 * 1024, 4, SECT_4K_ALT },
+@@ -786,11 +791,12 @@ static int __devinit m25p_probe(struct s
  	dev_set_drvdata(&spi->dev, flash);
  
  	/*
diff --git a/target/linux/generic/patches-2.6.32/087-mtd-m25p80-add-w25q32-chip-support.patch b/target/linux/generic/patches-2.6.32/087-mtd-m25p80-add-w25q32-chip-support.patch
index 5f44c1d696..75425d2bc5 100644
--- a/target/linux/generic/patches-2.6.32/087-mtd-m25p80-add-w25q32-chip-support.patch
+++ b/target/linux/generic/patches-2.6.32/087-mtd-m25p80-add-w25q32-chip-support.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -687,6 +687,7 @@ static struct flash_info __devinitdata m
+@@ -689,6 +689,7 @@ static struct flash_info __devinitdata m
  	{ "w25x80", 0xef3014, 0, 64 * 1024, 16, SECT_4K, },
  	{ "w25x16", 0xef3015, 0, 64 * 1024, 32, SECT_4K, },
  	{ "w25x32", 0xef3016, 0, 64 * 1024, 64, SECT_4K, },
diff --git a/target/linux/generic/patches-2.6.33/084-mtd_m25p80_add_pm25lv_flash_support.patch b/target/linux/generic/patches-2.6.33/084-mtd_m25p80_add_pm25lv_flash_support.patch
index 54cc6bbe50..39b91fe008 100644
--- a/target/linux/generic/patches-2.6.33/084-mtd_m25p80_add_pm25lv_flash_support.patch
+++ b/target/linux/generic/patches-2.6.33/084-mtd_m25p80_add_pm25lv_flash_support.patch
@@ -1,13 +1,39 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -645,6 +645,10 @@ static const struct spi_device_id m25p_i
+@@ -40,6 +40,7 @@
+ #define	OPCODE_BE_4K		0x20	/* Erase 4KiB block */
+ #define	OPCODE_BE_32K		0x52	/* Erase 32KiB block */
+ #define	OPCODE_CHIP_ERASE	0xc7	/* Erase whole flash chip */
++#define	OPCODE_BE_4K_PMC	0xd7	/* Erase 4KiB block on PMC chips*/
+ #define	OPCODE_SE		0xd8	/* Sector erase (usually 64KiB) */
+ #define	OPCODE_RDID		0x9f	/* Read JEDEC ID */
+ 
+@@ -599,6 +600,7 @@ struct flash_info {
+ 	u16		flags;
+ #define	SECT_4K		0x01		/* OPCODE_BE_4K works uniformly */
+ #define	M25P_NO_ERASE	0x02		/* No erase command needed */
++#define	SECT_4K_PMC	0x04		/* OPCODE_BE_4K_PMC works uniformly */
+ };
+ 
+ #define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags)	\
+@@ -645,6 +647,10 @@ static const struct spi_device_id m25p_i
  	{ "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
  	{ "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
  
 +	/* PMC -- pm25x "blocks" are 32K, sectors are 4K */
-+	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K) },
-+	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K) },
++	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) },
++	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K_PMC) },
 +
  	/* Spansion -- single (large) sector size only, at least
  	 * for the chips listed here (without boot sectors).
  	 */
+@@ -857,6 +863,9 @@ static int __devinit m25p_probe(struct s
+ 	if (info->flags & SECT_4K) {
+ 		flash->erase_opcode = OPCODE_BE_4K;
+ 		flash->mtd.erasesize = 4096;
++	} else if (info->flags & SECT_4K_PMC) {
++		flash->erase_opcode = OPCODE_BE_4K_PMC;
++		flash->mtd.erasesize = 4096;
+ 	} else {
+ 		flash->erase_opcode = OPCODE_SE;
+ 		flash->mtd.erasesize = info->sector_size;
diff --git a/target/linux/generic/patches-2.6.33/085-mtd_m25p80_add_en25pxx_support.patch b/target/linux/generic/patches-2.6.33/085-mtd_m25p80_add_en25pxx_support.patch
index 607430bb2d..2388580599 100644
--- a/target/linux/generic/patches-2.6.33/085-mtd_m25p80_add_en25pxx_support.patch
+++ b/target/linux/generic/patches-2.6.33/085-mtd_m25p80_add_en25pxx_support.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -645,6 +645,10 @@ static const struct spi_device_id m25p_i
+@@ -647,6 +647,10 @@ static const struct spi_device_id m25p_i
  	{ "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
  	{ "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
  
@@ -9,5 +9,5 @@
 +	{ "en25p64", INFO(0x1c2017, 0, 64 * 1024, 128, 0) },
 +
  	/* PMC -- pm25x "blocks" are 32K, sectors are 4K */
- 	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K) },
- 	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K) },
+ 	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) },
+ 	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K_PMC) },
diff --git a/target/linux/generic/patches-2.6.33/086-mtd_m25p80_add_xxxs33b_support.patch b/target/linux/generic/patches-2.6.33/086-mtd_m25p80_add_xxxs33b_support.patch
index fc20871fa4..88b327c3f4 100644
--- a/target/linux/generic/patches-2.6.33/086-mtd_m25p80_add_xxxs33b_support.patch
+++ b/target/linux/generic/patches-2.6.33/086-mtd_m25p80_add_xxxs33b_support.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -649,6 +649,11 @@ static const struct spi_device_id m25p_i
+@@ -651,6 +651,11 @@ static const struct spi_device_id m25p_i
  	{ "en25p32", INFO(0x1c2016, 0, 64 * 1024,  64, 0) },
  	{ "en25p64", INFO(0x1c2017, 0, 64 * 1024, 128, 0) },
  
@@ -10,9 +10,9 @@
 +	{ "640s33b",  INFO(0x898913, 0, 64 * 1024, 128, 0) },
 +
  	/* PMC -- pm25x "blocks" are 32K, sectors are 4K */
- 	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K) },
- 	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K) },
-@@ -833,11 +838,12 @@ static int __devinit m25p_probe(struct s
+ 	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) },
+ 	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K_PMC) },
+@@ -835,11 +840,12 @@ static int __devinit m25p_probe(struct s
  	dev_set_drvdata(&spi->dev, flash);
  
  	/*
diff --git a/target/linux/generic/patches-2.6.33/087-mtd-m25p80-add-w25q32-chip-support.patch b/target/linux/generic/patches-2.6.33/087-mtd-m25p80-add-w25q32-chip-support.patch
index 8d32ec2c5e..d58166a0aa 100644
--- a/target/linux/generic/patches-2.6.33/087-mtd-m25p80-add-w25q32-chip-support.patch
+++ b/target/linux/generic/patches-2.6.33/087-mtd-m25p80-add-w25q32-chip-support.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -706,6 +706,7 @@ static const struct spi_device_id m25p_i
+@@ -708,6 +708,7 @@ static const struct spi_device_id m25p_i
  	{ "w25x80", INFO(0xef3014, 0, 64 * 1024,  16, SECT_4K) },
  	{ "w25x16", INFO(0xef3015, 0, 64 * 1024,  32, SECT_4K) },
  	{ "w25x32", INFO(0xef3016, 0, 64 * 1024,  64, SECT_4K) },
diff --git a/target/linux/generic/patches-2.6.34/084-mtd_m25p80_add_pm25lv_flash_support.patch b/target/linux/generic/patches-2.6.34/084-mtd_m25p80_add_pm25lv_flash_support.patch
index 96a5bd0132..3c014aa4c2 100644
--- a/target/linux/generic/patches-2.6.34/084-mtd_m25p80_add_pm25lv_flash_support.patch
+++ b/target/linux/generic/patches-2.6.34/084-mtd_m25p80_add_pm25lv_flash_support.patch
@@ -1,13 +1,39 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -646,6 +646,10 @@ static const struct spi_device_id m25p_i
+@@ -41,6 +41,7 @@
+ #define	OPCODE_BE_4K		0x20	/* Erase 4KiB block */
+ #define	OPCODE_BE_32K		0x52	/* Erase 32KiB block */
+ #define	OPCODE_CHIP_ERASE	0xc7	/* Erase whole flash chip */
++#define	OPCODE_BE_4K_PMC	0xd7	/* Erase 4KiB block on PMC chips*/
+ #define	OPCODE_SE		0xd8	/* Sector erase (usually 64KiB) */
+ #define	OPCODE_RDID		0x9f	/* Read JEDEC ID */
+ 
+@@ -600,6 +601,7 @@ struct flash_info {
+ 	u16		flags;
+ #define	SECT_4K		0x01		/* OPCODE_BE_4K works uniformly */
+ #define	M25P_NO_ERASE	0x02		/* No erase command needed */
++#define	SECT_4K_PMC	0x04		/* OPCODE_BE_4K_PMC works uniformly */
+ };
+ 
+ #define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags)	\
+@@ -646,6 +648,10 @@ static const struct spi_device_id m25p_i
  	{ "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
  	{ "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
  
 +	/* PMC -- pm25x "blocks" are 32K, sectors are 4K */
-+	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K) },
-+	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K) },
++	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) },
++	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K_PMC) },
 +
  	/* Spansion -- single (large) sector size only, at least
  	 * for the chips listed here (without boot sectors).
  	 */
+@@ -858,6 +864,9 @@ static int __devinit m25p_probe(struct s
+ 	if (info->flags & SECT_4K) {
+ 		flash->erase_opcode = OPCODE_BE_4K;
+ 		flash->mtd.erasesize = 4096;
++	} else if (info->flags & SECT_4K_PMC) {
++		flash->erase_opcode = OPCODE_BE_4K_PMC;
++		flash->mtd.erasesize = 4096;
+ 	} else {
+ 		flash->erase_opcode = OPCODE_SE;
+ 		flash->mtd.erasesize = info->sector_size;
diff --git a/target/linux/generic/patches-2.6.34/085-mtd_m25p80_add_en25pxx_support.patch b/target/linux/generic/patches-2.6.34/085-mtd_m25p80_add_en25pxx_support.patch
index 9235e6ee16..99131c5c0a 100644
--- a/target/linux/generic/patches-2.6.34/085-mtd_m25p80_add_en25pxx_support.patch
+++ b/target/linux/generic/patches-2.6.34/085-mtd_m25p80_add_en25pxx_support.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -646,6 +646,10 @@ static const struct spi_device_id m25p_i
+@@ -648,6 +648,10 @@ static const struct spi_device_id m25p_i
  	{ "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
  	{ "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
  
@@ -9,5 +9,5 @@
 +	{ "en25p64", INFO(0x1c2017, 0, 64 * 1024, 128, 0) },
 +
  	/* PMC -- pm25x "blocks" are 32K, sectors are 4K */
- 	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K) },
- 	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K) },
+ 	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) },
+ 	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K_PMC) },
diff --git a/target/linux/generic/patches-2.6.34/086-mtd_m25p80_add_xxxs33b_support.patch b/target/linux/generic/patches-2.6.34/086-mtd_m25p80_add_xxxs33b_support.patch
index 69c595e0a0..2def3794ea 100644
--- a/target/linux/generic/patches-2.6.34/086-mtd_m25p80_add_xxxs33b_support.patch
+++ b/target/linux/generic/patches-2.6.34/086-mtd_m25p80_add_xxxs33b_support.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -650,6 +650,11 @@ static const struct spi_device_id m25p_i
+@@ -652,6 +652,11 @@ static const struct spi_device_id m25p_i
  	{ "en25p32", INFO(0x1c2016, 0, 64 * 1024,  64, 0) },
  	{ "en25p64", INFO(0x1c2017, 0, 64 * 1024, 128, 0) },
  
@@ -10,9 +10,9 @@
 +	{ "640s33b",  INFO(0x898913, 0, 64 * 1024, 128, 0) },
 +
  	/* PMC -- pm25x "blocks" are 32K, sectors are 4K */
- 	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K) },
- 	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K) },
-@@ -834,11 +839,12 @@ static int __devinit m25p_probe(struct s
+ 	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) },
+ 	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K_PMC) },
+@@ -836,11 +841,12 @@ static int __devinit m25p_probe(struct s
  	dev_set_drvdata(&spi->dev, flash);
  
  	/*
diff --git a/target/linux/generic/patches-2.6.34/087-mtd-m25p80-add-w25q32-chip-support.patch b/target/linux/generic/patches-2.6.34/087-mtd-m25p80-add-w25q32-chip-support.patch
index 34dfdbd894..ce8b6d3adc 100644
--- a/target/linux/generic/patches-2.6.34/087-mtd-m25p80-add-w25q32-chip-support.patch
+++ b/target/linux/generic/patches-2.6.34/087-mtd-m25p80-add-w25q32-chip-support.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -707,6 +707,7 @@ static const struct spi_device_id m25p_i
+@@ -709,6 +709,7 @@ static const struct spi_device_id m25p_i
  	{ "w25x80", INFO(0xef3014, 0, 64 * 1024,  16, SECT_4K) },
  	{ "w25x16", INFO(0xef3015, 0, 64 * 1024,  32, SECT_4K) },
  	{ "w25x32", INFO(0xef3016, 0, 64 * 1024,  64, SECT_4K) },
diff --git a/target/linux/generic/patches-2.6.35/084-mtd_m25p80_add_pm25lv_flash_support.patch b/target/linux/generic/patches-2.6.35/084-mtd_m25p80_add_pm25lv_flash_support.patch
index 96a5bd0132..3c014aa4c2 100644
--- a/target/linux/generic/patches-2.6.35/084-mtd_m25p80_add_pm25lv_flash_support.patch
+++ b/target/linux/generic/patches-2.6.35/084-mtd_m25p80_add_pm25lv_flash_support.patch
@@ -1,13 +1,39 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -646,6 +646,10 @@ static const struct spi_device_id m25p_i
+@@ -41,6 +41,7 @@
+ #define	OPCODE_BE_4K		0x20	/* Erase 4KiB block */
+ #define	OPCODE_BE_32K		0x52	/* Erase 32KiB block */
+ #define	OPCODE_CHIP_ERASE	0xc7	/* Erase whole flash chip */
++#define	OPCODE_BE_4K_PMC	0xd7	/* Erase 4KiB block on PMC chips*/
+ #define	OPCODE_SE		0xd8	/* Sector erase (usually 64KiB) */
+ #define	OPCODE_RDID		0x9f	/* Read JEDEC ID */
+ 
+@@ -600,6 +601,7 @@ struct flash_info {
+ 	u16		flags;
+ #define	SECT_4K		0x01		/* OPCODE_BE_4K works uniformly */
+ #define	M25P_NO_ERASE	0x02		/* No erase command needed */
++#define	SECT_4K_PMC	0x04		/* OPCODE_BE_4K_PMC works uniformly */
+ };
+ 
+ #define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags)	\
+@@ -646,6 +648,10 @@ static const struct spi_device_id m25p_i
  	{ "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
  	{ "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
  
 +	/* PMC -- pm25x "blocks" are 32K, sectors are 4K */
-+	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K) },
-+	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K) },
++	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) },
++	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K_PMC) },
 +
  	/* Spansion -- single (large) sector size only, at least
  	 * for the chips listed here (without boot sectors).
  	 */
+@@ -858,6 +864,9 @@ static int __devinit m25p_probe(struct s
+ 	if (info->flags & SECT_4K) {
+ 		flash->erase_opcode = OPCODE_BE_4K;
+ 		flash->mtd.erasesize = 4096;
++	} else if (info->flags & SECT_4K_PMC) {
++		flash->erase_opcode = OPCODE_BE_4K_PMC;
++		flash->mtd.erasesize = 4096;
+ 	} else {
+ 		flash->erase_opcode = OPCODE_SE;
+ 		flash->mtd.erasesize = info->sector_size;
diff --git a/target/linux/generic/patches-2.6.35/085-mtd_m25p80_add_en25pxx_support.patch b/target/linux/generic/patches-2.6.35/085-mtd_m25p80_add_en25pxx_support.patch
index 9235e6ee16..99131c5c0a 100644
--- a/target/linux/generic/patches-2.6.35/085-mtd_m25p80_add_en25pxx_support.patch
+++ b/target/linux/generic/patches-2.6.35/085-mtd_m25p80_add_en25pxx_support.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -646,6 +646,10 @@ static const struct spi_device_id m25p_i
+@@ -648,6 +648,10 @@ static const struct spi_device_id m25p_i
  	{ "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
  	{ "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
  
@@ -9,5 +9,5 @@
 +	{ "en25p64", INFO(0x1c2017, 0, 64 * 1024, 128, 0) },
 +
  	/* PMC -- pm25x "blocks" are 32K, sectors are 4K */
- 	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K) },
- 	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K) },
+ 	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) },
+ 	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K_PMC) },
diff --git a/target/linux/generic/patches-2.6.35/086-mtd_m25p80_add_xxxs33b_support.patch b/target/linux/generic/patches-2.6.35/086-mtd_m25p80_add_xxxs33b_support.patch
index 69c595e0a0..2def3794ea 100644
--- a/target/linux/generic/patches-2.6.35/086-mtd_m25p80_add_xxxs33b_support.patch
+++ b/target/linux/generic/patches-2.6.35/086-mtd_m25p80_add_xxxs33b_support.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -650,6 +650,11 @@ static const struct spi_device_id m25p_i
+@@ -652,6 +652,11 @@ static const struct spi_device_id m25p_i
  	{ "en25p32", INFO(0x1c2016, 0, 64 * 1024,  64, 0) },
  	{ "en25p64", INFO(0x1c2017, 0, 64 * 1024, 128, 0) },
  
@@ -10,9 +10,9 @@
 +	{ "640s33b",  INFO(0x898913, 0, 64 * 1024, 128, 0) },
 +
  	/* PMC -- pm25x "blocks" are 32K, sectors are 4K */
- 	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K) },
- 	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K) },
-@@ -834,11 +839,12 @@ static int __devinit m25p_probe(struct s
+ 	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) },
+ 	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K_PMC) },
+@@ -836,11 +841,12 @@ static int __devinit m25p_probe(struct s
  	dev_set_drvdata(&spi->dev, flash);
  
  	/*
diff --git a/target/linux/generic/patches-2.6.35/087-mtd-m25p80-add-w25q32-chip-support.patch b/target/linux/generic/patches-2.6.35/087-mtd-m25p80-add-w25q32-chip-support.patch
index 34dfdbd894..ce8b6d3adc 100644
--- a/target/linux/generic/patches-2.6.35/087-mtd-m25p80-add-w25q32-chip-support.patch
+++ b/target/linux/generic/patches-2.6.35/087-mtd-m25p80-add-w25q32-chip-support.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -707,6 +707,7 @@ static const struct spi_device_id m25p_i
+@@ -709,6 +709,7 @@ static const struct spi_device_id m25p_i
  	{ "w25x80", INFO(0xef3014, 0, 64 * 1024,  16, SECT_4K) },
  	{ "w25x16", INFO(0xef3015, 0, 64 * 1024,  32, SECT_4K) },
  	{ "w25x32", INFO(0xef3016, 0, 64 * 1024,  64, SECT_4K) },
diff --git a/target/linux/generic/patches-2.6.36/084-mtd_m25p80_add_pm25lv_flash_support.patch b/target/linux/generic/patches-2.6.36/084-mtd_m25p80_add_pm25lv_flash_support.patch
index 96a5bd0132..e37bab77e8 100644
--- a/target/linux/generic/patches-2.6.36/084-mtd_m25p80_add_pm25lv_flash_support.patch
+++ b/target/linux/generic/patches-2.6.36/084-mtd_m25p80_add_pm25lv_flash_support.patch
@@ -1,13 +1,39 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -646,6 +646,10 @@ static const struct spi_device_id m25p_i
+@@ -43,6 +43,7 @@
+ #define	OPCODE_BE_4K		0x20	/* Erase 4KiB block */
+ #define	OPCODE_BE_32K		0x52	/* Erase 32KiB block */
+ #define	OPCODE_CHIP_ERASE	0xc7	/* Erase whole flash chip */
++#define	OPCODE_BE_4K_PMC	0xd7	/* Erase 4KiB block on PMC chips*/
+ #define	OPCODE_SE		0xd8	/* Sector erase (usually 64KiB) */
+ #define	OPCODE_RDID		0x9f	/* Read JEDEC ID */
+ 
+@@ -598,6 +599,7 @@ struct flash_info {
+ 	u16		flags;
+ #define	SECT_4K		0x01		/* OPCODE_BE_4K works uniformly */
+ #define	M25P_NO_ERASE	0x02		/* No erase command needed */
++#define	SECT_4K_PMC	0x04		/* OPCODE_BE_4K_PMC works uniformly */
+ };
+ 
+ #define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags)	\
+@@ -654,6 +656,10 @@ static const struct spi_device_id m25p_i
  	{ "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
  	{ "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
  
 +	/* PMC -- pm25x "blocks" are 32K, sectors are 4K */
-+	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K) },
-+	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K) },
++	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) },
++	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K_PMC) },
 +
  	/* Spansion -- single (large) sector size only, at least
  	 * for the chips listed here (without boot sectors).
  	 */
+@@ -869,6 +875,9 @@ static int __devinit m25p_probe(struct s
+ 	if (info->flags & SECT_4K) {
+ 		flash->erase_opcode = OPCODE_BE_4K;
+ 		flash->mtd.erasesize = 4096;
++	} else if (info->flags & SECT_4K_PMC) {
++		flash->erase_opcode = OPCODE_BE_4K_PMC;
++		flash->mtd.erasesize = 4096;
+ 	} else {
+ 		flash->erase_opcode = OPCODE_SE;
+ 		flash->mtd.erasesize = info->sector_size;
diff --git a/target/linux/generic/patches-2.6.36/085-mtd_m25p80_add_en25pxx_support.patch b/target/linux/generic/patches-2.6.36/085-mtd_m25p80_add_en25pxx_support.patch
index 9235e6ee16..df2974cc0a 100644
--- a/target/linux/generic/patches-2.6.36/085-mtd_m25p80_add_en25pxx_support.patch
+++ b/target/linux/generic/patches-2.6.36/085-mtd_m25p80_add_en25pxx_support.patch
@@ -1,6 +1,6 @@
 --- a/drivers/mtd/devices/m25p80.c
 +++ b/drivers/mtd/devices/m25p80.c
-@@ -646,6 +646,10 @@ static const struct spi_device_id m25p_i
+@@ -656,6 +656,10 @@ static const struct spi_device_id m25p_i
  	{ "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
  	{ "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
  
@@ -9,5 +9,5 @@
 +	{ "en25p64", INFO(0x1c2017, 0, 64 * 1024, 128, 0) },
 +
  	/* PMC -- pm25x "blocks" are 32K, sectors are 4K */
- 	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K) },
- 	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K) },
+ 	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) },
+ 	{ "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K_PMC) },