From 192b639ecce29caa954482dbcaa46ae4fc4df0e7 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Sun, 26 Dec 2010 22:31:18 -0500
Subject: sf: punt unused spi_flash_region struct

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/include/spi_flash.h b/include/spi_flash.h
index 1f8ba29..89cc3a7 100644
--- a/include/spi_flash.h
+++ b/include/spi_flash.h
@@ -26,11 +26,6 @@
 #include <spi.h>
 #include <linux/types.h>
 
-struct spi_flash_region {
-	unsigned int	count;
-	unsigned int	size;
-};
-
 struct spi_flash {
 	struct spi_slave *spi;
 
-- 
cgit v0.10.2


From cdb6a00fb8f96b9259ed7d77a1eacbfa3777ddac Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Mon, 11 Apr 2011 23:39:28 -0400
Subject: sf: atmel: undo unification of status polling

The AT45 flashes are completely different (at the command set and
status register level) from all other SPI flashes, so we can't unify
their logic with common code.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/drivers/mtd/spi/atmel.c b/drivers/mtd/spi/atmel.c
index a9910b1..10df387 100644
--- a/drivers/mtd/spi/atmel.c
+++ b/drivers/mtd/spi/atmel.c
@@ -113,8 +113,35 @@ static const struct atmel_spi_flash_params atmel_spi_flash_table[] = {
 
 static int at45_wait_ready(struct spi_flash *flash, unsigned long timeout)
 {
-	return spi_flash_cmd_poll_bit(flash, timeout,
-		CMD_AT45_READ_STATUS, AT45_STATUS_READY);
+	struct spi_slave *spi = flash->spi;
+	unsigned long timebase;
+	int ret;
+	u8 cmd = CMD_AT45_READ_STATUS;
+	u8 status;
+
+	timebase = get_timer(0);
+
+	ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN);
+	if (ret)
+		return -1;
+
+	do {
+		ret = spi_xfer(spi, 8, NULL, &status, 0);
+		if (ret)
+			return -1;
+
+		if (status & AT45_STATUS_READY)
+			break;
+	} while (get_timer(timebase) < timeout);
+
+	/* Deactivate CS */
+	spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END);
+
+	if (status & AT45_STATUS_READY)
+		return 0;
+
+	/* Timed out */
+	return -1;
 }
 
 /*
-- 
cgit v0.10.2


From 4e6a515899290635bfd7fe3aef8c4d4d9e88fced Mon Sep 17 00:00:00 2001
From: Richard Retanubun <RichardRetanubun@ruggedcom.com>
Date: Wed, 16 Feb 2011 16:37:22 -0500
Subject: sf: add struct spi_flash.sector_size parameter

This patch adds a new member to struct spi_flash (u16 sector_size)
and updates the spi flash drivers to start populating it.

This parameter can be used by spi flash commands that need to round
up units of operation to the flash's sector_size.

Having this number in one place also allows duplicated code to be
further collapsed into one common location (such as erase parameter
and the detected message).

Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/drivers/mtd/spi/atmel.c b/drivers/mtd/spi/atmel.c
index 10df387..d17ebf6 100644
--- a/drivers/mtd/spi/atmel.c
+++ b/drivers/mtd/spi/atmel.c
@@ -522,14 +522,11 @@ struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode)
 		goto err;
 	}
 
+	asf->flash.sector_size = page_size;
 	asf->flash.size = page_size * params->pages_per_block
 				* params->blocks_per_sector
 				* params->nr_sectors;
 
-	printf("SF: Detected %s with page size %u, total ",
-	       params->name, page_size);
-	print_size(asf->flash.size, "\n");
-
 	return &asf->flash;
 
 err:
diff --git a/drivers/mtd/spi/eon.c b/drivers/mtd/spi/eon.c
index 01caed5..a3640f4 100644
--- a/drivers/mtd/spi/eon.c
+++ b/drivers/mtd/spi/eon.c
@@ -121,11 +121,7 @@ static int eon_write(struct spi_flash *flash,
 
 int eon_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
-	struct eon_spi_flash *eon = to_eon_spi_flash(flash);
-	return spi_flash_cmd_erase(flash, CMD_EN25Q128_BE,
-		eon->params->page_size * eon->params->pages_per_sector *
-			eon->params->sectors_per_block;
-		offset, len);
+	return spi_flash_cmd_erase(flash, CMD_EN25Q128_BE, offset, len);
 }
 
 struct spi_flash *spi_flash_probe_eon(struct spi_slave *spi, u8 *idcode)
@@ -158,11 +154,10 @@ struct spi_flash *spi_flash_probe_eon(struct spi_slave *spi, u8 *idcode)
 	eon->flash.write = eon_write;
 	eon->flash.erase = eon_erase;
 	eon->flash.read = spi_flash_cmd_read_fast;
+	eon->flash.sector_size = params->page_size * params->pages_per_sector
+	    * params->sectors_per_block;
 	eon->flash.size = params->page_size * params->pages_per_sector
 	    * params->nr_sectors;
 
-	debug("SF: Detected %s with page size %u, total %u bytes\n",
-	      params->name, params->page_size, eon->flash.size);
-
 	return &eon->flash;
 }
diff --git a/drivers/mtd/spi/macronix.c b/drivers/mtd/spi/macronix.c
index 4155d4d..a0512d1 100644
--- a/drivers/mtd/spi/macronix.c
+++ b/drivers/mtd/spi/macronix.c
@@ -177,11 +177,7 @@ static int macronix_write(struct spi_flash *flash,
 
 int macronix_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
-	struct macronix_spi_flash *mcx = to_macronix_spi_flash(flash);
-	return spi_flash_cmd_erase(flash, CMD_MX25XX_BE,
-		mcx->params->page_size * mcx->params->pages_per_sector *
-			mcx->params->sectors_per_block,
-		offset, len);
+	return spi_flash_cmd_erase(flash, CMD_MX25XX_BE, offset, len);
 }
 
 struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode)
@@ -215,12 +211,9 @@ struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode)
 	mcx->flash.write = macronix_write;
 	mcx->flash.erase = macronix_erase;
 	mcx->flash.read = spi_flash_cmd_read_fast;
-	mcx->flash.size = params->page_size * params->pages_per_sector
-	    * params->sectors_per_block * params->nr_blocks;
-
-	printf("SF: Detected %s with page size %u, total ",
-	       params->name, params->page_size);
-	print_size(mcx->flash.size, "\n");
+	mcx->flash.sector_size = params->page_size * params->pages_per_sector
+		* params->sectors_per_block;
+	mcx->flash.size = mcx->flash.sector_size * params->nr_blocks;
 
 	return &mcx->flash;
 }
diff --git a/drivers/mtd/spi/ramtron.c b/drivers/mtd/spi/ramtron.c
index 171390d..453dd3f 100644
--- a/drivers/mtd/spi/ramtron.c
+++ b/drivers/mtd/spi/ramtron.c
@@ -312,8 +312,5 @@ found:
 	sn->flash.erase = ramtron_erase;
 	sn->flash.size = params->size;
 
-	printf("SF: Detected %s with size ", params->name);
-	print_size(sn->flash.size, "\n");
-
 	return &sn->flash;
 }
diff --git a/drivers/mtd/spi/spansion.c b/drivers/mtd/spi/spansion.c
index d54a5fa..f138d73 100644
--- a/drivers/mtd/spi/spansion.c
+++ b/drivers/mtd/spi/spansion.c
@@ -198,10 +198,7 @@ static int spansion_write(struct spi_flash *flash,
 
 int spansion_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
-	struct spansion_spi_flash *spsn = to_spansion_spi_flash(flash);
-	return spi_flash_cmd_erase(flash, CMD_S25FLXX_SE,
-		spsn->params->page_size * spsn->params->pages_per_sector,
-		offset, len);
+	return spi_flash_cmd_erase(flash, CMD_S25FLXX_SE, offset, len);
 }
 
 struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)
@@ -240,12 +237,8 @@ struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)
 	spsn->flash.write = spansion_write;
 	spsn->flash.erase = spansion_erase;
 	spsn->flash.read = spi_flash_cmd_read_fast;
-	spsn->flash.size = params->page_size * params->pages_per_sector
-	    * params->nr_sectors;
-
-	printf("SF: Detected %s with page size %u, total ",
-	       params->name, params->page_size);
-	print_size(spsn->flash.size, "\n");
+	spsn->flash.sector_size = params->page_size * params->pages_per_sector;
+	spsn->flash.size = spsn->flash.sector_size * params->nr_sectors;
 
 	return &spsn->flash;
 }
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index 5c261f1..ccb7e31 100644
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -131,12 +131,13 @@ int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout)
 }
 
 int spi_flash_cmd_erase(struct spi_flash *flash, u8 erase_cmd,
-			u32 erase_size, u32 offset, size_t len)
+			u32 offset, size_t len)
 {
-	u32 start, end;
+	u32 start, end, erase_size;
 	int ret;
 	u8 cmd[4];
 
+	erase_size = flash->sector_size;
 	if (offset % erase_size || len % erase_size) {
 		debug("SF: Erase offset/length not multiple of erase size\n");
 		return -1;
@@ -296,6 +297,10 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
 		goto err_manufacturer_probe;
 	}
 
+	printf("SF: Detected %s with page size %u, total ",
+	       flash->name, flash->sector_size);
+	print_size(flash->size, "\n");
+
 	spi_release_bus(spi);
 
 	return flash;
diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h
index d7bcd6d..fc109ce 100644
--- a/drivers/mtd/spi/spi_flash_internal.h
+++ b/drivers/mtd/spi/spi_flash_internal.h
@@ -64,7 +64,7 @@ int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout);
 
 /* Erase sectors. */
 int spi_flash_cmd_erase(struct spi_flash *flash, u8 erase_cmd,
-			u32 erase_size, u32 offset, size_t len);
+			u32 offset, size_t len);
 
 /* Manufacturer-specific probe functions */
 struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode);
diff --git a/drivers/mtd/spi/sst.c b/drivers/mtd/spi/sst.c
index 792d04d..29bb88b 100644
--- a/drivers/mtd/spi/sst.c
+++ b/drivers/mtd/spi/sst.c
@@ -201,8 +201,7 @@ sst_write(struct spi_flash *flash, u32 offset, size_t len, const void *buf)
 
 int sst_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
-	return spi_flash_cmd_erase(flash, CMD_SST_SE, SST_SECTOR_SIZE,
-		offset, len);
+	return spi_flash_cmd_erase(flash, CMD_SST_SE, offset, len);
 }
 
 static int
@@ -256,11 +255,8 @@ spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode)
 
 	stm->flash.write = sst_write;
 	stm->flash.erase = sst_erase;
-	stm->flash.size = SST_SECTOR_SIZE * params->nr_sectors;
-
-	printf("SF: Detected %s with page size %u, total ",
-	       params->name, SST_SECTOR_SIZE);
-	print_size(stm->flash.size, "\n");
+	stm->flash.sector_size = SST_SECTOR_SIZE;
+	stm->flash.size = stm->flash.sector_size * params->nr_sectors;
 
 	/* Flash powers up read-only, so clear BP# bits */
 	sst_unlock(&stm->flash);
diff --git a/drivers/mtd/spi/stmicro.c b/drivers/mtd/spi/stmicro.c
index 7ef690d..a1980b1 100644
--- a/drivers/mtd/spi/stmicro.c
+++ b/drivers/mtd/spi/stmicro.c
@@ -199,10 +199,7 @@ static int stmicro_write(struct spi_flash *flash,
 
 int stmicro_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
-	struct stmicro_spi_flash *stm = to_stmicro_spi_flash(flash);
-	return spi_flash_cmd_erase(flash, CMD_M25PXX_SE,
-		stm->params->page_size * stm->params->pages_per_sector,
-		offset, len);
+	return spi_flash_cmd_erase(flash, CMD_M25PXX_SE, offset, len);
 }
 
 struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
@@ -249,12 +246,8 @@ struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
 	stm->flash.write = stmicro_write;
 	stm->flash.erase = stmicro_erase;
 	stm->flash.read = spi_flash_cmd_read_fast;
-	stm->flash.size = params->page_size * params->pages_per_sector
-	    * params->nr_sectors;
-
-	printf("SF: Detected %s with page size %u, total ",
-	       params->name, params->page_size);
-	print_size(stm->flash.size, "\n");
+	stm->flash.sector_size = params->page_size * params->pages_per_sector;
+	stm->flash.size = stm->flash.sector_size * params->nr_sectors;
 
 	return &stm->flash;
 }
diff --git a/drivers/mtd/spi/winbond.c b/drivers/mtd/spi/winbond.c
index e88802f..72d94ad 100644
--- a/drivers/mtd/spi/winbond.c
+++ b/drivers/mtd/spi/winbond.c
@@ -172,10 +172,7 @@ out:
 
 int winbond_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
-	struct winbond_spi_flash *stm = to_winbond_spi_flash(flash);
-	return spi_flash_cmd_erase(flash, CMD_W25_SE,
-		(1 << stm->params->l2_page_size) * stm->params->pages_per_sector,
-		offset, len);
+	return spi_flash_cmd_erase(flash, CMD_W25_SE, offset, len);
 }
 
 struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode)
@@ -213,13 +210,11 @@ struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode)
 	stm->flash.write = winbond_write;
 	stm->flash.erase = winbond_erase;
 	stm->flash.read = spi_flash_cmd_read_fast;
+	stm->flash.sector_size = (1 << stm->params->l2_page_size) *
+		stm->params->pages_per_sector;
 	stm->flash.size = page_size * params->pages_per_sector
 				* params->sectors_per_block
 				* params->nr_blocks;
 
-	printf("SF: Detected %s with page size %u, total ",
-	       params->name, page_size);
-	print_size(stm->flash.size, "\n");
-
 	return &stm->flash;
 }
diff --git a/include/spi_flash.h b/include/spi_flash.h
index 89cc3a7..a384071 100644
--- a/include/spi_flash.h
+++ b/include/spi_flash.h
@@ -33,6 +33,8 @@ struct spi_flash {
 
 	u32		size;
 
+	u32		sector_size;
+
 	int		(*read)(struct spi_flash *flash, u32 offset,
 				size_t len, void *buf);
 	int		(*write)(struct spi_flash *flash, u32 offset,
-- 
cgit v0.10.2


From c5910874ba418e7dc35661b98a8931cb86358f95 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Tue, 12 Apr 2011 01:34:55 -0400
Subject: sf: sst: setup read func

The previous unification patch missed setting up the sst read func.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/drivers/mtd/spi/sst.c b/drivers/mtd/spi/sst.c
index 29bb88b..38983bd 100644
--- a/drivers/mtd/spi/sst.c
+++ b/drivers/mtd/spi/sst.c
@@ -255,6 +255,7 @@ spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode)
 
 	stm->flash.write = sst_write;
 	stm->flash.erase = sst_erase;
+	stm->flash.read = spi_flash_cmd_read_fast;
 	stm->flash.sector_size = SST_SECTOR_SIZE;
 	stm->flash.size = stm->flash.sector_size * params->nr_sectors;
 
-- 
cgit v0.10.2


From f8f0757dcb117664a712650f000433e765acffbd Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Tue, 12 Apr 2011 01:51:29 -0400
Subject: sf: localize erase funcs

No need for these to be exported as they are only accessed indirectly
via function pointers.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/drivers/mtd/spi/atmel.c b/drivers/mtd/spi/atmel.c
index d17ebf6..1ecece0 100644
--- a/drivers/mtd/spi/atmel.c
+++ b/drivers/mtd/spi/atmel.c
@@ -328,7 +328,7 @@ out:
 /*
  * TODO: the two erase funcs (_p2/_at45) should get unified ...
  */
-int dataflash_erase_p2(struct spi_flash *flash, u32 offset, size_t len)
+static int dataflash_erase_p2(struct spi_flash *flash, u32 offset, size_t len)
 {
 	struct atmel_spi_flash *asf = to_atmel_spi_flash(flash);
 	unsigned long page_size;
@@ -387,7 +387,7 @@ out:
 	return ret;
 }
 
-int dataflash_erase_at45(struct spi_flash *flash, u32 offset, size_t len)
+static int dataflash_erase_at45(struct spi_flash *flash, u32 offset, size_t len)
 {
 	struct atmel_spi_flash *asf = to_atmel_spi_flash(flash);
 	unsigned long page_addr;
diff --git a/drivers/mtd/spi/eon.c b/drivers/mtd/spi/eon.c
index a3640f4..e3de3aa 100644
--- a/drivers/mtd/spi/eon.c
+++ b/drivers/mtd/spi/eon.c
@@ -119,7 +119,7 @@ static int eon_write(struct spi_flash *flash,
 	return ret;
 }
 
-int eon_erase(struct spi_flash *flash, u32 offset, size_t len)
+static int eon_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
 	return spi_flash_cmd_erase(flash, CMD_EN25Q128_BE, offset, len);
 }
diff --git a/drivers/mtd/spi/macronix.c b/drivers/mtd/spi/macronix.c
index a0512d1..ff66f2a 100644
--- a/drivers/mtd/spi/macronix.c
+++ b/drivers/mtd/spi/macronix.c
@@ -175,7 +175,7 @@ static int macronix_write(struct spi_flash *flash,
 	return ret;
 }
 
-int macronix_erase(struct spi_flash *flash, u32 offset, size_t len)
+static int macronix_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
 	return spi_flash_cmd_erase(flash, CMD_MX25XX_BE, offset, len);
 }
diff --git a/drivers/mtd/spi/ramtron.c b/drivers/mtd/spi/ramtron.c
index 453dd3f..078d16c 100644
--- a/drivers/mtd/spi/ramtron.c
+++ b/drivers/mtd/spi/ramtron.c
@@ -233,7 +233,7 @@ static int ramtron_write(struct spi_flash *flash,
 		CMD_RAMTRON_WRITE);
 }
 
-int ramtron_erase(struct spi_flash *flash, u32 offset, size_t len)
+static int ramtron_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
 	debug("SF: Erase of RAMTRON FRAMs is pointless\n");
 	return -1;
diff --git a/drivers/mtd/spi/spansion.c b/drivers/mtd/spi/spansion.c
index f138d73..a3401b3 100644
--- a/drivers/mtd/spi/spansion.c
+++ b/drivers/mtd/spi/spansion.c
@@ -196,7 +196,7 @@ static int spansion_write(struct spi_flash *flash,
 	return ret;
 }
 
-int spansion_erase(struct spi_flash *flash, u32 offset, size_t len)
+static int spansion_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
 	return spi_flash_cmd_erase(flash, CMD_S25FLXX_SE, offset, len);
 }
diff --git a/drivers/mtd/spi/sst.c b/drivers/mtd/spi/sst.c
index 38983bd..0733deb 100644
--- a/drivers/mtd/spi/sst.c
+++ b/drivers/mtd/spi/sst.c
@@ -199,7 +199,7 @@ sst_write(struct spi_flash *flash, u32 offset, size_t len, const void *buf)
 	return ret;
 }
 
-int sst_erase(struct spi_flash *flash, u32 offset, size_t len)
+static int sst_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
 	return spi_flash_cmd_erase(flash, CMD_SST_SE, offset, len);
 }
diff --git a/drivers/mtd/spi/stmicro.c b/drivers/mtd/spi/stmicro.c
index a1980b1..a1959ca 100644
--- a/drivers/mtd/spi/stmicro.c
+++ b/drivers/mtd/spi/stmicro.c
@@ -197,7 +197,7 @@ static int stmicro_write(struct spi_flash *flash,
 	return ret;
 }
 
-int stmicro_erase(struct spi_flash *flash, u32 offset, size_t len)
+static int stmicro_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
 	return spi_flash_cmd_erase(flash, CMD_M25PXX_SE, offset, len);
 }
diff --git a/drivers/mtd/spi/winbond.c b/drivers/mtd/spi/winbond.c
index 72d94ad..e8d30ae 100644
--- a/drivers/mtd/spi/winbond.c
+++ b/drivers/mtd/spi/winbond.c
@@ -170,7 +170,7 @@ out:
 	return ret;
 }
 
-int winbond_erase(struct spi_flash *flash, u32 offset, size_t len)
+static int winbond_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
 	return spi_flash_cmd_erase(flash, CMD_W25_SE, offset, len);
 }
-- 
cgit v0.10.2


From 334eb4b02f90c7223ee92e49307089590c77992c Mon Sep 17 00:00:00 2001
From: Richard Retanubun <RichardRetanubun@ruggedcom.com>
Date: Wed, 16 Feb 2011 16:39:44 -0500
Subject: cmd_sf: add handler for +len arg for erase command

This patch adds [+]len handler for the erase command that will
automatically round up the requested erase length to the flash's
sector_size.

Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/common/cmd_sf.c b/common/cmd_sf.c
index 6e7be81..afbef99 100644
--- a/common/cmd_sf.c
+++ b/common/cmd_sf.c
@@ -19,6 +19,47 @@
 
 static struct spi_flash *flash;
 
+
+/*
+ * This function computes the length argument for the erase command.
+ * The length on which the command is to operate can be given in two forms:
+ * 1. <cmd> offset len  - operate on <'offset',  'len')
+ * 2. <cmd> offset +len - operate on <'offset',  'round_up(len)')
+ * If the second form is used and the length doesn't fall on the
+ * sector boundary, than it will be adjusted to the next sector boundary.
+ * If it isn't in the flash, the function will fail (return -1).
+ * Input:
+ *    arg: length specification (i.e. both command arguments)
+ * Output:
+ *    len: computed length for operation
+ * Return:
+ *    1: success
+ *   -1: failure (bad format, bad address).
+ */
+static int sf_parse_len_arg(char *arg, ulong *len)
+{
+	char *ep;
+	char round_up_len; /* indicates if the "+length" form used */
+	ulong len_arg;
+
+	round_up_len = 0;
+	if (*arg == '+') {
+		round_up_len = 1;
+		++arg;
+	}
+
+	len_arg = simple_strtoul(arg, &ep, 16);
+	if (ep == arg || *ep != '\0')
+		return -1;
+
+	if (round_up_len && flash->sector_size > 0)
+		*len = ROUND(len_arg - 1, flash->sector_size);
+	else
+		*len = len_arg;
+
+	return 1;
+}
+
 static int do_spi_flash_probe(int argc, char * const argv[])
 {
 	unsigned int bus = 0;
@@ -135,8 +176,9 @@ static int do_spi_flash_erase(int argc, char * const argv[])
 	offset = simple_strtoul(argv[1], &endp, 16);
 	if (*argv[1] == 0 || *endp != 0)
 		goto usage;
-	len = simple_strtoul(argv[2], &endp, 16);
-	if (*argv[2] == 0 || *endp != 0)
+
+	ret = sf_parse_len_arg(argv[2], &len);
+	if (ret != 1)
 		goto usage;
 
 	ret = spi_flash_erase(flash, offset, len);
@@ -148,7 +190,7 @@ static int do_spi_flash_erase(int argc, char * const argv[])
 	return 0;
 
 usage:
-	puts("Usage: sf erase offset len\n");
+	puts("Usage: sf erase offset [+]len\n");
 	return 1;
 }
 
@@ -189,5 +231,6 @@ U_BOOT_CMD(
 	"				  `offset' to memory at `addr'\n"
 	"sf write addr offset len	- write `len' bytes from memory\n"
 	"				  at `addr' to flash at `offset'\n"
-	"sf erase offset len		- erase `len' bytes from `offset'"
+	"sf erase offset [+]len		- erase `len' bytes from `offset'\n"
+	"				  `+len' round up `len' to block size"
 );
-- 
cgit v0.10.2


From 493c36072160d72d5a8fe5943539da47c0a702a6 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Tue, 12 Apr 2011 02:09:28 -0400
Subject: sf: use print_size() for sector_size output

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index ccb7e31..c75b716 100644
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -297,8 +297,8 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
 		goto err_manufacturer_probe;
 	}
 
-	printf("SF: Detected %s with page size %u, total ",
-	       flash->name, flash->sector_size);
+	printf("SF: Detected %s with page size ", flash->name);
+	print_size(flash->sector_size, ", total ");
 	print_size(flash->size, "\n");
 
 	spi_release_bus(spi);
-- 
cgit v0.10.2


From 840ff998895944fc51303cc43fdb258c4f89279c Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Tue, 12 Apr 2011 02:10:19 -0400
Subject: cmd_sf: drop device status message when probing

The common spi flash layer displays useful info when probing, so no
need for us to duplicate that.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/common/cmd_sf.c b/common/cmd_sf.c
index afbef99..3abc4ff 100644
--- a/common/cmd_sf.c
+++ b/common/cmd_sf.c
@@ -106,9 +106,6 @@ static int do_spi_flash_probe(int argc, char * const argv[])
 		spi_flash_free(flash);
 	flash = new;
 
-	printf("%u KiB %s at %u:%u is now current device\n",
-			flash->size >> 10, flash->name, bus, cs);
-
 	return 0;
 
 usage:
-- 
cgit v0.10.2


From 8a07de03f07f386c29198f52b2192cf378bf2d7c Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Tue, 12 Apr 2011 02:21:31 -0400
Subject: cmd_sf: use cmd_usage() in more places

Requires a little reworking of the code flow with sub-functions, but
not a big deal.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/common/cmd_sf.c b/common/cmd_sf.c
index 3abc4ff..11a491d 100644
--- a/common/cmd_sf.c
+++ b/common/cmd_sf.c
@@ -70,30 +70,30 @@ static int do_spi_flash_probe(int argc, char * const argv[])
 	struct spi_flash *new;
 
 	if (argc < 2)
-		goto usage;
+		return -1;
 
 	cs = simple_strtoul(argv[1], &endp, 0);
 	if (*argv[1] == 0 || (*endp != 0 && *endp != ':'))
-		goto usage;
+		return -1;
 	if (*endp == ':') {
 		if (endp[1] == 0)
-			goto usage;
+			return -1;
 
 		bus = cs;
 		cs = simple_strtoul(endp + 1, &endp, 0);
 		if (*endp != 0)
-			goto usage;
+			return -1;
 	}
 
 	if (argc >= 3) {
 		speed = simple_strtoul(argv[2], &endp, 0);
 		if (*argv[2] == 0 || *endp != 0)
-			goto usage;
+			return -1;
 	}
 	if (argc >= 4) {
 		mode = simple_strtoul(argv[3], &endp, 16);
 		if (*argv[3] == 0 || *endp != 0)
-			goto usage;
+			return -1;
 	}
 
 	new = spi_flash_probe(bus, cs, speed, mode);
@@ -107,10 +107,6 @@ static int do_spi_flash_probe(int argc, char * const argv[])
 	flash = new;
 
 	return 0;
-
-usage:
-	puts("Usage: sf probe [bus:]cs [hz] [mode]\n");
-	return 1;
 }
 
 static int do_spi_flash_read_write(int argc, char * const argv[])
@@ -123,17 +119,17 @@ static int do_spi_flash_read_write(int argc, char * const argv[])
 	int ret;
 
 	if (argc < 4)
-		goto usage;
+		return -1;
 
 	addr = simple_strtoul(argv[1], &endp, 16);
 	if (*argv[1] == 0 || *endp != 0)
-		goto usage;
+		return -1;
 	offset = simple_strtoul(argv[2], &endp, 16);
 	if (*argv[2] == 0 || *endp != 0)
-		goto usage;
+		return -1;
 	len = simple_strtoul(argv[3], &endp, 16);
 	if (*argv[3] == 0 || *endp != 0)
-		goto usage;
+		return -1;
 
 	buf = map_physmem(addr, len, MAP_WRBACK);
 	if (!buf) {
@@ -154,10 +150,6 @@ static int do_spi_flash_read_write(int argc, char * const argv[])
 	}
 
 	return 0;
-
-usage:
-	printf("Usage: sf %s addr offset len\n", argv[0]);
-	return 1;
 }
 
 static int do_spi_flash_erase(int argc, char * const argv[])
@@ -168,15 +160,15 @@ static int do_spi_flash_erase(int argc, char * const argv[])
 	int ret;
 
 	if (argc < 3)
-		goto usage;
+		return -1;
 
 	offset = simple_strtoul(argv[1], &endp, 16);
 	if (*argv[1] == 0 || *endp != 0)
-		goto usage;
+		return -1;
 
 	ret = sf_parse_len_arg(argv[2], &len);
 	if (ret != 1)
-		goto usage;
+		return -1;
 
 	ret = spi_flash_erase(flash, offset, len);
 	if (ret) {
@@ -185,24 +177,25 @@ static int do_spi_flash_erase(int argc, char * const argv[])
 	}
 
 	return 0;
-
-usage:
-	puts("Usage: sf erase offset [+]len\n");
-	return 1;
 }
 
 static int do_spi_flash(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	const char *cmd;
+	int ret;
 
 	/* need at least two arguments */
 	if (argc < 2)
 		goto usage;
 
 	cmd = argv[1];
+	--argc;
+	++argv;
 
-	if (strcmp(cmd, "probe") == 0)
-		return do_spi_flash_probe(argc - 1, argv + 1);
+	if (strcmp(cmd, "probe") == 0) {
+		ret = do_spi_flash_probe(argc, argv);
+		goto done;
+	}
 
 	/* The remaining commands require a selected device */
 	if (!flash) {
@@ -211,9 +204,15 @@ static int do_spi_flash(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[
 	}
 
 	if (strcmp(cmd, "read") == 0 || strcmp(cmd, "write") == 0)
-		return do_spi_flash_read_write(argc - 1, argv + 1);
-	if (strcmp(cmd, "erase") == 0)
-		return do_spi_flash_erase(argc - 1, argv + 1);
+		ret = do_spi_flash_read_write(argc, argv);
+	else if (strcmp(cmd, "erase") == 0)
+		ret = do_spi_flash_erase(argc, argv);
+	else
+		ret = -1;
+
+done:
+	if (ret != -1)
+		return ret;
 
 usage:
 	return cmd_usage(cmdtp);
-- 
cgit v0.10.2


From 1c091f59a03af9f2e821cb054fd555a2748dd091 Mon Sep 17 00:00:00 2001
From: James Kosin <jkosin@intcomgrp.com>
Date: Wed, 13 Apr 2011 15:12:18 -0400
Subject: sf: sst: add support for SST25VF064C

Signed-off-by: James Kosin <jkosin@intcomgrp.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/drivers/mtd/spi/sst.c b/drivers/mtd/spi/sst.c
index 0733deb..4dc2db2 100644
--- a/drivers/mtd/spi/sst.c
+++ b/drivers/mtd/spi/sst.c
@@ -71,6 +71,10 @@ static const struct sst_spi_flash_params sst_spi_flash_table[] = {
 		.nr_sectors = 1024,
 		.name = "SST25VF032B",
 	},{
+		.idcode1 = 0x4b,
+		.nr_sectors = 2048,
+		.name = "SST25VF064C",
+	},{
 		.idcode1 = 0x01,
 		.nr_sectors = 16,
 		.name = "SST25WF512",
-- 
cgit v0.10.2