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* [PATCH 1/2] imx-bbu-nand-fcb: split up read_fcb
@ 2016-12-14  8:00 Jan Remmet
  2016-12-14  8:00 ` [PATCH] i.MX habv4: add RVT address for i.MX6UL Jan Remmet
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Jan Remmet @ 2016-12-14  8:00 UTC (permalink / raw)
  To: barebox

There are other ecc modes for the fcb out there.

Signed-off-by: Jan Remmet <j.remmet@phytec.de>
---
 common/imx-bbu-nand-fcb.c | 83 +++++++++++++++++++++++++++--------------------
 1 file changed, 47 insertions(+), 36 deletions(-)

diff --git a/common/imx-bbu-nand-fcb.c b/common/imx-bbu-nand-fcb.c
index 1db4c5a..34a5f83 100644
--- a/common/imx-bbu-nand-fcb.c
+++ b/common/imx-bbu-nand-fcb.c
@@ -167,6 +167,46 @@ static uint32_t calc_chksum(void *buf, size_t size)
 	return ~chksum;
 }
 
+struct fcb_block *read_fcb_hamming_13_8(void *rawpage)
+{
+	int i;
+	int bitflips = 0, bit_to_flip;
+	u8 parity, np, syndrome;
+	u8 *fcb, *ecc;
+
+	fcb = rawpage + 12;
+	ecc = rawpage + 512 + 12;
+
+	for (i = 0; i < 512; i++) {
+		parity = ecc[i];
+		np = calculate_parity_13_8(fcb[i]);
+
+		syndrome = np ^ parity;
+		if (syndrome == 0)
+			continue;
+
+		if (!(hweight8(syndrome) & 1)) {
+			pr_err("Uncorrectable error at offset %d\n", i);
+			return ERR_PTR(-EIO);
+		}
+
+		bit_to_flip = lookup_single_error_13_8(syndrome);
+		if (bit_to_flip < 0) {
+			pr_err("Uncorrectable error at offset %d\n", i);
+			return ERR_PTR(-EIO);
+		}
+
+		bitflips++;
+
+		if (bit_to_flip > 7)
+			ecc[i] ^= 1 << (bit_to_flip - 8);
+		else
+			fcb[i] ^= 1 << bit_to_flip;
+	}
+
+	return xmemdup(rawpage + 12, 512);
+}
+
 static __maybe_unused void dump_fcb(void *buf)
 {
 	struct fcb_block *fcb = buf;
@@ -258,11 +298,8 @@ static ssize_t raw_write_page(struct mtd_info *mtd, void *buf, loff_t offset)
 
 static int read_fcb(struct mtd_info *mtd, int num, struct fcb_block **retfcb)
 {
-	int i;
-	int bitflips = 0, bit_to_flip;
-	u8 parity, np, syndrome;
-	u8 *fcb, *ecc;
 	int ret;
+	struct fcb_block *fcb;
 	void *rawpage;
 
 	*retfcb = NULL;
@@ -275,40 +312,14 @@ static int read_fcb(struct mtd_info *mtd, int num, struct fcb_block **retfcb)
 		goto err;
 	}
 
-	fcb = rawpage + 12;
-	ecc = rawpage + 512 + 12;
-
-	for (i = 0; i < 512; i++) {
-		parity = ecc[i];
-		np = calculate_parity_13_8(fcb[i]);
-
-		syndrome = np ^ parity;
-		if (syndrome == 0)
-			continue;
-
-		if (!(hweight8(syndrome) & 1)) {
-			pr_err("Uncorrectable error at offset %d\n", i);
-			ret = -EIO;
-			goto err;
-		}
-
-		bit_to_flip = lookup_single_error_13_8(syndrome);
-		if (bit_to_flip < 0) {
-			pr_err("Uncorrectable error at offset %d\n", i);
-			ret = -EIO;
-			goto err;
-		}
-
-		bitflips++;
-
-		if (bit_to_flip > 7)
-			ecc[i] ^= 1 << (bit_to_flip - 8);
-		else
-			fcb[i] ^= 1 << bit_to_flip;
+	fcb = read_fcb_hamming_13_8(rawpage);
+	if (IS_ERR(fcb)) {
+		pr_err("Cannot read fcb\n");
+		ret = PTR_ERR(fcb);
+		goto err;
 	}
 
-	*retfcb = xmemdup(rawpage + 12, 512);
-
+	*retfcb = fcb;
 	ret = 0;
 err:
 	free(rawpage);
-- 
2.7.4


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^ permalink raw reply	[flat|nested] 4+ messages in thread
* [PATCH] i.MX habv4: add RVT address for i.MX6UL
  2016-12-14  8:00 [PATCH 1/2] imx-bbu-nand-fcb: split up read_fcb Jan Remmet
@ 2016-12-14  8:00 ` Jan Remmet
  2016-12-14  8:05 ` [PATCH 1/2] imx-bbu-nand-fcb: split up read_fcb Jan Remmet
  2017-01-09 10:45 ` Sascha Hauer
  2 siblings, 0 replies; 4+ messages in thread
From: Jan Remmet @ 2016-12-14  8:00 UTC (permalink / raw)
  To: barebox

The RVT table contains the pointers to the HAB API functions and is
located at 0x00000100.

Signed-off-by: Jan Remmet <j.remmet@phytec.de>
---
 drivers/hab/habv4.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/hab/habv4.c b/drivers/hab/habv4.c
index 91dbb7a..ae43bdf 100644
--- a/drivers/hab/habv4.c
+++ b/drivers/hab/habv4.c
@@ -27,6 +27,7 @@
 #define HABV4_RVT_IMX28 0xffff8af8
 #define HABV4_RVT_IMX6_OLD 0x00000094
 #define HABV4_RVT_IMX6_NEW 0x00000098
+#define HABV4_RVT_IMX6UL   0x00000100
 
 enum hab_tag {
 	HAB_TAG_IVT = 0xd1,		/* Image Vector Table */
@@ -227,6 +228,10 @@ int imx6_hab_get_status(void)
 	if (rvt->header.tag == HAB_TAG_RVT)
 		return habv4_get_status(rvt);
 
+	rvt = (void *)HABV4_RVT_IMX6UL;
+	if (rvt->header.tag == HAB_TAG_RVT)
+		return habv4_get_status(rvt);
+
 	pr_err("ERROR - RVT not found!\n");
 
 	return -EINVAL;
@@ -237,4 +242,4 @@ int imx28_hab_get_status(void)
 	const struct habv4_rvt *rvt = (void *)HABV4_RVT_IMX28;
 
 	return habv4_get_status(rvt);
-}
\ No newline at end of file
+}
-- 
2.7.4


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^ permalink raw reply	[flat|nested] 4+ messages in thread
* Re: [PATCH 1/2] imx-bbu-nand-fcb: split up read_fcb
  2016-12-14  8:00 [PATCH 1/2] imx-bbu-nand-fcb: split up read_fcb Jan Remmet
  2016-12-14  8:00 ` [PATCH] i.MX habv4: add RVT address for i.MX6UL Jan Remmet
@ 2016-12-14  8:05 ` Jan Remmet
  2017-01-09 10:45 ` Sascha Hauer
  2 siblings, 0 replies; 4+ messages in thread
From: Jan Remmet @ 2016-12-14  8:05 UTC (permalink / raw)
  To: barebox

On Wed, Dec 14, 2016 at 09:00:03AM +0100, Jan Remmet wrote:
> There are other ecc modes for the fcb out there.

sorry double post :(
Jan
> 
> Signed-off-by: Jan Remmet <j.remmet@phytec.de>
> ---
>  common/imx-bbu-nand-fcb.c | 83 +++++++++++++++++++++++++++--------------------
>  1 file changed, 47 insertions(+), 36 deletions(-)
> 
> diff --git a/common/imx-bbu-nand-fcb.c b/common/imx-bbu-nand-fcb.c
> index 1db4c5a..34a5f83 100644
> --- a/common/imx-bbu-nand-fcb.c
> +++ b/common/imx-bbu-nand-fcb.c
> @@ -167,6 +167,46 @@ static uint32_t calc_chksum(void *buf, size_t size)
>  	return ~chksum;
>  }
>  
> +struct fcb_block *read_fcb_hamming_13_8(void *rawpage)
> +{
> +	int i;
> +	int bitflips = 0, bit_to_flip;
> +	u8 parity, np, syndrome;
> +	u8 *fcb, *ecc;
> +
> +	fcb = rawpage + 12;
> +	ecc = rawpage + 512 + 12;
> +
> +	for (i = 0; i < 512; i++) {
> +		parity = ecc[i];
> +		np = calculate_parity_13_8(fcb[i]);
> +
> +		syndrome = np ^ parity;
> +		if (syndrome == 0)
> +			continue;
> +
> +		if (!(hweight8(syndrome) & 1)) {
> +			pr_err("Uncorrectable error at offset %d\n", i);
> +			return ERR_PTR(-EIO);
> +		}
> +
> +		bit_to_flip = lookup_single_error_13_8(syndrome);
> +		if (bit_to_flip < 0) {
> +			pr_err("Uncorrectable error at offset %d\n", i);
> +			return ERR_PTR(-EIO);
> +		}
> +
> +		bitflips++;
> +
> +		if (bit_to_flip > 7)
> +			ecc[i] ^= 1 << (bit_to_flip - 8);
> +		else
> +			fcb[i] ^= 1 << bit_to_flip;
> +	}
> +
> +	return xmemdup(rawpage + 12, 512);
> +}
> +
>  static __maybe_unused void dump_fcb(void *buf)
>  {
>  	struct fcb_block *fcb = buf;
> @@ -258,11 +298,8 @@ static ssize_t raw_write_page(struct mtd_info *mtd, void *buf, loff_t offset)
>  
>  static int read_fcb(struct mtd_info *mtd, int num, struct fcb_block **retfcb)
>  {
> -	int i;
> -	int bitflips = 0, bit_to_flip;
> -	u8 parity, np, syndrome;
> -	u8 *fcb, *ecc;
>  	int ret;
> +	struct fcb_block *fcb;
>  	void *rawpage;
>  
>  	*retfcb = NULL;
> @@ -275,40 +312,14 @@ static int read_fcb(struct mtd_info *mtd, int num, struct fcb_block **retfcb)
>  		goto err;
>  	}
>  
> -	fcb = rawpage + 12;
> -	ecc = rawpage + 512 + 12;
> -
> -	for (i = 0; i < 512; i++) {
> -		parity = ecc[i];
> -		np = calculate_parity_13_8(fcb[i]);
> -
> -		syndrome = np ^ parity;
> -		if (syndrome == 0)
> -			continue;
> -
> -		if (!(hweight8(syndrome) & 1)) {
> -			pr_err("Uncorrectable error at offset %d\n", i);
> -			ret = -EIO;
> -			goto err;
> -		}
> -
> -		bit_to_flip = lookup_single_error_13_8(syndrome);
> -		if (bit_to_flip < 0) {
> -			pr_err("Uncorrectable error at offset %d\n", i);
> -			ret = -EIO;
> -			goto err;
> -		}
> -
> -		bitflips++;
> -
> -		if (bit_to_flip > 7)
> -			ecc[i] ^= 1 << (bit_to_flip - 8);
> -		else
> -			fcb[i] ^= 1 << bit_to_flip;
> +	fcb = read_fcb_hamming_13_8(rawpage);
> +	if (IS_ERR(fcb)) {
> +		pr_err("Cannot read fcb\n");
> +		ret = PTR_ERR(fcb);
> +		goto err;
>  	}
>  
> -	*retfcb = xmemdup(rawpage + 12, 512);
> -
> +	*retfcb = fcb;
>  	ret = 0;
>  err:
>  	free(rawpage);
> -- 
> 2.7.4
> 
> 
> _______________________________________________
> barebox mailing list
> barebox@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox

_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

^ permalink raw reply	[flat|nested] 4+ messages in thread
* Re: [PATCH 1/2] imx-bbu-nand-fcb: split up read_fcb
  2016-12-14  8:00 [PATCH 1/2] imx-bbu-nand-fcb: split up read_fcb Jan Remmet
  2016-12-14  8:00 ` [PATCH] i.MX habv4: add RVT address for i.MX6UL Jan Remmet
  2016-12-14  8:05 ` [PATCH 1/2] imx-bbu-nand-fcb: split up read_fcb Jan Remmet
@ 2017-01-09 10:45 ` Sascha Hauer
  2 siblings, 0 replies; 4+ messages in thread
From: Sascha Hauer @ 2017-01-09 10:45 UTC (permalink / raw)
  To: Jan Remmet; +Cc: barebox

On Wed, Dec 14, 2016 at 09:00:03AM +0100, Jan Remmet wrote:
> There are other ecc modes for the fcb out there.
> 
> Signed-off-by: Jan Remmet <j.remmet@phytec.de>
> ---
>  common/imx-bbu-nand-fcb.c | 83 +++++++++++++++++++++++++++--------------------
>  1 file changed, 47 insertions(+), 36 deletions(-)

Applied, thanks

Sascha

> 
> diff --git a/common/imx-bbu-nand-fcb.c b/common/imx-bbu-nand-fcb.c
> index 1db4c5a..34a5f83 100644
> --- a/common/imx-bbu-nand-fcb.c
> +++ b/common/imx-bbu-nand-fcb.c
> @@ -167,6 +167,46 @@ static uint32_t calc_chksum(void *buf, size_t size)
>  	return ~chksum;
>  }
>  
> +struct fcb_block *read_fcb_hamming_13_8(void *rawpage)
> +{
> +	int i;
> +	int bitflips = 0, bit_to_flip;
> +	u8 parity, np, syndrome;
> +	u8 *fcb, *ecc;
> +
> +	fcb = rawpage + 12;
> +	ecc = rawpage + 512 + 12;
> +
> +	for (i = 0; i < 512; i++) {
> +		parity = ecc[i];
> +		np = calculate_parity_13_8(fcb[i]);
> +
> +		syndrome = np ^ parity;
> +		if (syndrome == 0)
> +			continue;
> +
> +		if (!(hweight8(syndrome) & 1)) {
> +			pr_err("Uncorrectable error at offset %d\n", i);
> +			return ERR_PTR(-EIO);
> +		}
> +
> +		bit_to_flip = lookup_single_error_13_8(syndrome);
> +		if (bit_to_flip < 0) {
> +			pr_err("Uncorrectable error at offset %d\n", i);
> +			return ERR_PTR(-EIO);
> +		}
> +
> +		bitflips++;
> +
> +		if (bit_to_flip > 7)
> +			ecc[i] ^= 1 << (bit_to_flip - 8);
> +		else
> +			fcb[i] ^= 1 << bit_to_flip;
> +	}
> +
> +	return xmemdup(rawpage + 12, 512);
> +}
> +
>  static __maybe_unused void dump_fcb(void *buf)
>  {
>  	struct fcb_block *fcb = buf;
> @@ -258,11 +298,8 @@ static ssize_t raw_write_page(struct mtd_info *mtd, void *buf, loff_t offset)
>  
>  static int read_fcb(struct mtd_info *mtd, int num, struct fcb_block **retfcb)
>  {
> -	int i;
> -	int bitflips = 0, bit_to_flip;
> -	u8 parity, np, syndrome;
> -	u8 *fcb, *ecc;
>  	int ret;
> +	struct fcb_block *fcb;
>  	void *rawpage;
>  
>  	*retfcb = NULL;
> @@ -275,40 +312,14 @@ static int read_fcb(struct mtd_info *mtd, int num, struct fcb_block **retfcb)
>  		goto err;
>  	}
>  
> -	fcb = rawpage + 12;
> -	ecc = rawpage + 512 + 12;
> -
> -	for (i = 0; i < 512; i++) {
> -		parity = ecc[i];
> -		np = calculate_parity_13_8(fcb[i]);
> -
> -		syndrome = np ^ parity;
> -		if (syndrome == 0)
> -			continue;
> -
> -		if (!(hweight8(syndrome) & 1)) {
> -			pr_err("Uncorrectable error at offset %d\n", i);
> -			ret = -EIO;
> -			goto err;
> -		}
> -
> -		bit_to_flip = lookup_single_error_13_8(syndrome);
> -		if (bit_to_flip < 0) {
> -			pr_err("Uncorrectable error at offset %d\n", i);
> -			ret = -EIO;
> -			goto err;
> -		}
> -
> -		bitflips++;
> -
> -		if (bit_to_flip > 7)
> -			ecc[i] ^= 1 << (bit_to_flip - 8);
> -		else
> -			fcb[i] ^= 1 << bit_to_flip;
> +	fcb = read_fcb_hamming_13_8(rawpage);
> +	if (IS_ERR(fcb)) {
> +		pr_err("Cannot read fcb\n");
> +		ret = PTR_ERR(fcb);
> +		goto err;
>  	}
>  
> -	*retfcb = xmemdup(rawpage + 12, 512);
> -
> +	*retfcb = fcb;
>  	ret = 0;
>  err:
>  	free(rawpage);
> -- 
> 2.7.4
> 
> 
> _______________________________________________
> barebox mailing list
> barebox@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox
> 

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^ permalink raw reply	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2017-01-09 10:45 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-12-14  8:00 [PATCH 1/2] imx-bbu-nand-fcb: split up read_fcb Jan Remmet
2016-12-14  8:00 ` [PATCH] i.MX habv4: add RVT address for i.MX6UL Jan Remmet
2016-12-14  8:05 ` [PATCH 1/2] imx-bbu-nand-fcb: split up read_fcb Jan Remmet
2017-01-09 10:45 ` Sascha Hauer

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