[PATCH 0/4] at91: Fix NAND PMECC on various SoCs/boards

[PATCH 0/4] at91: Fix NAND PMECC on various SoCs/boards

[Tudor Ambarus]

Fix the Galois Field Table offsets for sama5d3 and sam9x60 SoCs.
PMECC could not correct errors.

Fix the involuntarily disablement of NAND PMECC on some boards,
and fix some wrong definitions for CONFIG_PMECC_CAP.

Tested on sam9x60ek and sama5d3_xplained. I/we "injected" bit flips
into u-boot NAND memory area, and then read back. PMECC could not
correct the errors. With these everything is fine.

Kai Stuhlemmer (ebee Engineering) (1):
  sam9x60.h: Fix Galois Field Table offsets

Tudor Ambarus (3):
  configs: at91: Fix the involuntarily disablement of NAND PMECC
  configs: at91: Fix wrong definitions for CONFIG_PMECC_CAP
  sama5d3: Fix Galois Field Table offsets

 arch/arm/mach-at91/include/mach/sam9x60.h   | 4 ++--
 arch/arm/mach-at91/include/mach/sama5d3.h   | 4 ++--
 configs/at91sam9n12ek_mmc_defconfig         | 1 +
 configs/at91sam9n12ek_spiflash_defconfig    | 1 +
 configs/at91sam9x5ek_mmc_defconfig          | 1 +
 configs/at91sam9x5ek_spiflash_defconfig     | 1 +
 configs/sama5d36ek_cmp_mmc_defconfig        | 2 ++
 configs/sama5d36ek_cmp_nandflash_defconfig  | 1 +
 configs/sama5d36ek_cmp_spiflash_defconfig   | 2 ++
 configs/sama5d3_xplained_mmc_defconfig      | 2 ++
 configs/sama5d3xek_mmc_defconfig            | 2 ++
 configs/sama5d3xek_spiflash_defconfig       | 2 ++
 configs/sama5d4_xplained_spiflash_defconfig | 2 ++
 configs/sama5d4ek_mmc_defconfig             | 2 ++
 configs/sama5d4ek_spiflash_defconfig        | 2 ++
 15 files changed, 25 insertions(+), 4 deletions(-)

-- 
2.25.1

[PATCH 1/4] configs: at91: Fix the involuntarily disablement of NAND PMECC

[Tudor Ambarus]

SPL_GENERATE_ATMEL_PMECC_HEADER selects:
ATMEL_NAND_HWECC [=y] && ATMEL_NAND_HW_PMECC [=y].

With the removal of SPL_GENERATE_ATMEL_PMECC_HEADER,
ATMEL_NAND_HW_PMECC and ATMEL_NAND_HWECC were no longer
selected. Also, when the SPL_GENERATE_ATMEL_PMECC_HEADER was removed,
the configs were not updated using savedefconfig, thus the
'commit d168bcb6fe39 ("configs: Resync with savedefconfig")'
further removes the CONFIG_PMECC_CAP value.

Update defconfigs and add CONFIG_ATMEL_NAND_HW_PMECC,
which selects ATMEL_NAND_HWECC, in order to restore NAND PMECC
support. Restore CONFIG_PMECC_CAP value.

Fixes: 57f76c2a47 ("configs: at91: remove SPL_GENERATE_ATMEL_PMECC_HEADER from non-nand configs")
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
 configs/at91sam9n12ek_mmc_defconfig         | 1 +
 configs/at91sam9n12ek_spiflash_defconfig    | 1 +
 configs/at91sam9x5ek_mmc_defconfig          | 1 +
 configs/at91sam9x5ek_spiflash_defconfig     | 1 +
 configs/sama5d36ek_cmp_mmc_defconfig        | 1 +
 configs/sama5d36ek_cmp_spiflash_defconfig   | 1 +
 configs/sama5d3_xplained_mmc_defconfig      | 1 +
 configs/sama5d3xek_mmc_defconfig            | 2 ++
 configs/sama5d3xek_spiflash_defconfig       | 2 ++
 configs/sama5d4_xplained_spiflash_defconfig | 2 ++
 configs/sama5d4ek_mmc_defconfig             | 1 +
 configs/sama5d4ek_spiflash_defconfig        | 2 ++
 12 files changed, 16 insertions(+)

diff --git a/configs/at91sam9n12ek_mmc_defconfig b/configs/at91sam9n12ek_mmc_defconfig
index fa802c3625..0ddf8fcb56 100644
--- a/configs/at91sam9n12ek_mmc_defconfig
+++ b/configs/at91sam9n12ek_mmc_defconfig
@@ -43,6 +43,7 @@ CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
+CONFIG_ATMEL_NAND_HW_PMECC=y
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
diff --git a/configs/at91sam9n12ek_spiflash_defconfig b/configs/at91sam9n12ek_spiflash_defconfig
index 997594720b..4af64d8ac2 100644
--- a/configs/at91sam9n12ek_spiflash_defconfig
+++ b/configs/at91sam9n12ek_spiflash_defconfig
@@ -45,6 +45,7 @@ CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
+CONFIG_ATMEL_NAND_HW_PMECC=y
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
diff --git a/configs/at91sam9x5ek_mmc_defconfig b/configs/at91sam9x5ek_mmc_defconfig
index 7f8fa22dc2..92b653f7d7 100644
--- a/configs/at91sam9x5ek_mmc_defconfig
+++ b/configs/at91sam9x5ek_mmc_defconfig
@@ -46,6 +46,7 @@ CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
+CONFIG_ATMEL_NAND_HW_PMECC=y
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
diff --git a/configs/at91sam9x5ek_spiflash_defconfig b/configs/at91sam9x5ek_spiflash_defconfig
index 8575a33943..ca3ae1fb62 100644
--- a/configs/at91sam9x5ek_spiflash_defconfig
+++ b/configs/at91sam9x5ek_spiflash_defconfig
@@ -48,6 +48,7 @@ CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
+CONFIG_ATMEL_NAND_HW_PMECC=y
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
diff --git a/configs/sama5d36ek_cmp_mmc_defconfig b/configs/sama5d36ek_cmp_mmc_defconfig
index 846f96b595..177b020469 100644
--- a/configs/sama5d36ek_cmp_mmc_defconfig
+++ b/configs/sama5d36ek_cmp_mmc_defconfig
@@ -47,6 +47,7 @@ CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
+CONFIG_ATMEL_NAND_HW_PMECC=y
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
diff --git a/configs/sama5d36ek_cmp_spiflash_defconfig b/configs/sama5d36ek_cmp_spiflash_defconfig
index 6a63a74162..fe1600b798 100644
--- a/configs/sama5d36ek_cmp_spiflash_defconfig
+++ b/configs/sama5d36ek_cmp_spiflash_defconfig
@@ -49,6 +49,7 @@ CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
+CONFIG_ATMEL_NAND_HW_PMECC=y
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
diff --git a/configs/sama5d3_xplained_mmc_defconfig b/configs/sama5d3_xplained_mmc_defconfig
index ec117ee693..dd36d809d0 100644
--- a/configs/sama5d3_xplained_mmc_defconfig
+++ b/configs/sama5d3_xplained_mmc_defconfig
@@ -66,6 +66,7 @@ CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
+CONFIG_ATMEL_NAND_HW_PMECC=y
 CONFIG_DM_ETH=y
 CONFIG_MACB=y
 CONFIG_PINCTRL=y
diff --git a/configs/sama5d3xek_mmc_defconfig b/configs/sama5d3xek_mmc_defconfig
index 50f97e68e1..dcbffff413 100644
--- a/configs/sama5d3xek_mmc_defconfig
+++ b/configs/sama5d3xek_mmc_defconfig
@@ -71,6 +71,8 @@ CONFIG_SYS_FLASH_CFI=y
 CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
+CONFIG_ATMEL_NAND_HW_PMECC=y
+CONFIG_PMECC_CAP=4
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
diff --git a/configs/sama5d3xek_spiflash_defconfig b/configs/sama5d3xek_spiflash_defconfig
index b8c4d3263f..7dd8f1bfe7 100644
--- a/configs/sama5d3xek_spiflash_defconfig
+++ b/configs/sama5d3xek_spiflash_defconfig
@@ -72,6 +72,8 @@ CONFIG_SYS_FLASH_CFI=y
 CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
+CONFIG_ATMEL_NAND_HW_PMECC=y
+CONFIG_PMECC_CAP=4
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
diff --git a/configs/sama5d4_xplained_spiflash_defconfig b/configs/sama5d4_xplained_spiflash_defconfig
index de5f92de6f..db15514999 100644
--- a/configs/sama5d4_xplained_spiflash_defconfig
+++ b/configs/sama5d4_xplained_spiflash_defconfig
@@ -68,6 +68,8 @@ CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
+CONFIG_ATMEL_NAND_HW_PMECC=y
+CONFIG_PMECC_CAP=8
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
diff --git a/configs/sama5d4ek_mmc_defconfig b/configs/sama5d4ek_mmc_defconfig
index 25d875ec2e..9aa37e5bae 100644
--- a/configs/sama5d4ek_mmc_defconfig
+++ b/configs/sama5d4ek_mmc_defconfig
@@ -62,6 +62,7 @@ CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
+CONFIG_ATMEL_NAND_HW_PMECC=y
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
diff --git a/configs/sama5d4ek_spiflash_defconfig b/configs/sama5d4ek_spiflash_defconfig
index cb8ed99cdd..7ef589697c 100644
--- a/configs/sama5d4ek_spiflash_defconfig
+++ b/configs/sama5d4ek_spiflash_defconfig
@@ -65,6 +65,8 @@ CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
+CONFIG_ATMEL_NAND_HW_PMECC=y
+CONFIG_PMECC_CAP=8
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
-- 
2.25.1

[PATCH 2/4] configs: at91: Fix wrong definitions for CONFIG_PMECC_CAP

[Tudor Ambarus]

When CONFIG_ATMEL_NAND_HW_PMECC is set, CONFIG_PMECC_CAP defaults
to the value of 2. At the conversion to Kconfig for the PMECC config
values, some boards/defconfigs were wrongly configured.
Update CONFIG_PMECC_CAP to the PMECC_CAP value before the conversion.

Fixes: 49ad40298c ("ARM: at91: Convert SPL_GENERATE_ATMEL_PMECC_HEADER to Kconfig")
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
 configs/sama5d36ek_cmp_mmc_defconfig       | 1 +
 configs/sama5d36ek_cmp_nandflash_defconfig | 1 +
 configs/sama5d36ek_cmp_spiflash_defconfig  | 1 +
 configs/sama5d3_xplained_mmc_defconfig     | 1 +
 configs/sama5d4ek_mmc_defconfig            | 1 +
 5 files changed, 5 insertions(+)

diff --git a/configs/sama5d36ek_cmp_mmc_defconfig b/configs/sama5d36ek_cmp_mmc_defconfig
index 177b020469..32580ce8f0 100644
--- a/configs/sama5d36ek_cmp_mmc_defconfig
+++ b/configs/sama5d36ek_cmp_mmc_defconfig
@@ -48,6 +48,7 @@ CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
 CONFIG_ATMEL_NAND_HW_PMECC=y
+CONFIG_PMECC_CAP=4
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
diff --git a/configs/sama5d36ek_cmp_nandflash_defconfig b/configs/sama5d36ek_cmp_nandflash_defconfig
index d38a0bea6d..478720f72f 100644
--- a/configs/sama5d36ek_cmp_nandflash_defconfig
+++ b/configs/sama5d36ek_cmp_nandflash_defconfig
@@ -47,6 +47,7 @@ CONFIG_GENERIC_ATMEL_MCI=y
 CONFIG_MTD=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
+CONFIG_PMECC_CAP=4
 CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER=y
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
diff --git a/configs/sama5d36ek_cmp_spiflash_defconfig b/configs/sama5d36ek_cmp_spiflash_defconfig
index fe1600b798..10227fe3bb 100644
--- a/configs/sama5d36ek_cmp_spiflash_defconfig
+++ b/configs/sama5d36ek_cmp_spiflash_defconfig
@@ -50,6 +50,7 @@ CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
 CONFIG_ATMEL_NAND_HW_PMECC=y
+CONFIG_PMECC_CAP=4
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
diff --git a/configs/sama5d3_xplained_mmc_defconfig b/configs/sama5d3_xplained_mmc_defconfig
index dd36d809d0..d713af77b1 100644
--- a/configs/sama5d3_xplained_mmc_defconfig
+++ b/configs/sama5d3_xplained_mmc_defconfig
@@ -67,6 +67,7 @@ CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
 CONFIG_ATMEL_NAND_HW_PMECC=y
+CONFIG_PMECC_CAP=4
 CONFIG_DM_ETH=y
 CONFIG_MACB=y
 CONFIG_PINCTRL=y
diff --git a/configs/sama5d4ek_mmc_defconfig b/configs/sama5d4ek_mmc_defconfig
index 9aa37e5bae..c1ee3793c6 100644
--- a/configs/sama5d4ek_mmc_defconfig
+++ b/configs/sama5d4ek_mmc_defconfig
@@ -63,6 +63,7 @@ CONFIG_MTD_RAW_NAND=y
 # CONFIG_SYS_NAND_USE_FLASH_BBT is not set
 CONFIG_NAND_ATMEL=y
 CONFIG_ATMEL_NAND_HW_PMECC=y
+CONFIG_PMECC_CAP=8
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
-- 
2.25.1

[PATCH 3/4] sama5d3: Fix Galois Field Table offsets

[Tudor Ambarus]

Offsets are described in the datasheet at section:
"11.4.4.2 NAND Flash Boot: PMECC Error Detection and Correction".

For testing I "injected" bit flips into u-boot NAND memory area,
and then read back. PMECC could not correct the errors. With the
offsets updated everything is fine.

Fixes: 3225f34e5c ("ARM: atmel: add sama5d3xek support")
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
 arch/arm/mach-at91/include/mach/sama5d3.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-at91/include/mach/sama5d3.h b/arch/arm/mach-at91/include/mach/sama5d3.h
index 83f18a8148..f4f05676f7 100644
--- a/arch/arm/mach-at91/include/mach/sama5d3.h
+++ b/arch/arm/mach-at91/include/mach/sama5d3.h
@@ -190,8 +190,8 @@
 /*
  * PMECC table in ROM
  */
-#define ATMEL_PMECC_INDEX_OFFSET_512	0x10000
-#define ATMEL_PMECC_INDEX_OFFSET_1024	0x18000
+#define ATMEL_PMECC_INDEX_OFFSET_512	0x8000
+#define ATMEL_PMECC_INDEX_OFFSET_1024	0x10000
 
 /*
  * SAMA5D3 specific prototypes
-- 
2.25.1

[PATCH 4/4] sam9x60.h: Fix Galois Field Table offsets

[Tudor Ambarus]

From: "Kai Stuhlemmer (ebee Engineering)" <kai.stuhlemmer@ebee.de>

Because ATMEL_BASE_ROM is defined to 0x100000, it already points
to the begin of the index table for 512 byte sectors correction.
Thus its offset must be zero and the index of the table for 1024
byte sectors must start at offset 0x8000.

Signed-off-by: Kai Stuhlemmer (ebee Engineering) <kai.stuhlemmer@ebee.de>
[ta: update commit message]
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
 arch/arm/mach-at91/include/mach/sam9x60.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-at91/include/mach/sam9x60.h b/arch/arm/mach-at91/include/mach/sam9x60.h
index b7f43226b7..c08d19c691 100644
--- a/arch/arm/mach-at91/include/mach/sam9x60.h
+++ b/arch/arm/mach-at91/include/mach/sam9x60.h
@@ -154,8 +154,8 @@
 /*
  * PMECC table in ROM
  */
-#define ATMEL_PMECC_INDEX_OFFSET_512	0x8000
-#define ATMEL_PMECC_INDEX_OFFSET_1024	0x10000
+#define ATMEL_PMECC_INDEX_OFFSET_512	0x0000
+#define ATMEL_PMECC_INDEX_OFFSET_1024	0x8000
 
 /*
  * SAM9X60 specific prototypes
-- 
2.25.1

[PATCH 0/4] at91: Fix NAND PMECC on various SoCs/boards

[Eugen.Hristev at microchip.com]

On 08.01.2021 14:40, Tudor Ambarus wrote:
> Fix the Galois Field Table offsets for sama5d3 and sam9x60 SoCs.
> PMECC could not correct errors.
> 
> Fix the involuntarily disablement of NAND PMECC on some boards,
> and fix some wrong definitions for CONFIG_PMECC_CAP.
> 
> Tested on sam9x60ek and sama5d3_xplained. I/we "injected" bit flips
> into u-boot NAND memory area, and then read back. PMECC could not
> correct the errors. With these everything is fine.
> 
> Kai Stuhlemmer (ebee Engineering) (1):
>    sam9x60.h: Fix Galois Field Table offsets
> 
> Tudor Ambarus (3):
>    configs: at91: Fix the involuntarily disablement of NAND PMECC
>    configs: at91: Fix wrong definitions for CONFIG_PMECC_CAP
>    sama5d3: Fix Galois Field Table offsets
> 
>   arch/arm/mach-at91/include/mach/sam9x60.h   | 4 ++--
>   arch/arm/mach-at91/include/mach/sama5d3.h   | 4 ++--
>   configs/at91sam9n12ek_mmc_defconfig         | 1 +
>   configs/at91sam9n12ek_spiflash_defconfig    | 1 +
>   configs/at91sam9x5ek_mmc_defconfig          | 1 +
>   configs/at91sam9x5ek_spiflash_defconfig     | 1 +
>   configs/sama5d36ek_cmp_mmc_defconfig        | 2 ++
>   configs/sama5d36ek_cmp_nandflash_defconfig  | 1 +
>   configs/sama5d36ek_cmp_spiflash_defconfig   | 2 ++
>   configs/sama5d3_xplained_mmc_defconfig      | 2 ++
>   configs/sama5d3xek_mmc_defconfig            | 2 ++
>   configs/sama5d3xek_spiflash_defconfig       | 2 ++
>   configs/sama5d4_xplained_spiflash_defconfig | 2 ++
>   configs/sama5d4ek_mmc_defconfig             | 2 ++
>   configs/sama5d4ek_spiflash_defconfig        | 2 ++
>   15 files changed, 25 insertions(+), 4 deletions(-)
> 

Applied to u-boot-atmel/master and pushed out, thanks !