[U-Boot] [PATCH 0/6] omap3: overo: collected fixes

[U-Boot] [PATCH 0/6] omap3: overo: collected fixes

[Ash Charles]

This series collects several board-enablement fixes for the Gumstix
Overo as well as switching to BCH8 for NAND ECC, updating the UBI
boot sequence for DTB-based boots, and correcting a RAM configuration
for Overo COMs of Revision 0.

This series follows after the series previously submitted:
http://lists.denx.de/pipermail/u-boot/2015-April/211651.html

Arun Bharadwaj (2):
  omap3: overo: Add DTS support for TobiDuo expansion
  overo: Override RAM setup for rev. 0 boards

Ash Charles (4):
  omap3: overo: Set the Arbor43C 'expansionname'
  overo: Add support for Palo35 expansion board
  omap3: overo: Use software BCH8 ECC for NAND
  omap3: overo: Allow boot with kernel in UBI rootfs

 board/overo/overo.c           |  3 +++
 board/overo/spl.c             |  2 +-
 include/configs/omap3_overo.h | 32 ++++++++++++++++++++++++++++----
 3 files changed, 32 insertions(+), 5 deletions(-)

-- 
2.1.4

[U-Boot] [PATCH 1/6] omap3: overo: Set the Arbor43C 'expansionname'

[Ash Charles]

The Gumstix Arbor43C expansion board [1] uses a customized device tree
file.  When this expansion board is detected, load this file.

[1] https://store.gumstix.com/index.php/products/635/

Signed-off-by: Ash Charles <ashcharles@gmail.com>
---
 board/overo/overo.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/board/overo/overo.c b/board/overo/overo.c
index 6253825..2845e7c 100644
--- a/board/overo/overo.c
+++ b/board/overo/overo.c
@@ -257,6 +257,7 @@ int misc_init_r(void)
 		MUX_GUMSTIX();
 		MUX_ARBOR43C();
 		setenv("defaultdisplay", "lcd43");
+		setenv("expansionname", "arbor43c");
 		break;
 	case ETTUS_USRP_E:
 		printf("Recognized Ettus Research USRP-E (rev %d %s)\n",
-- 
2.1.4

[U-Boot] [PATCH 2/6] omap3: overo: Add DTS support for TobiDuo expansion

[Ash Charles]

From: Arun Bharadwaj <arun@gumstix.com>

Signed-off-by: Arun Bharadwaj <arun@gumstix.com>
Signed-off-by: Ash Charles <ashcharles@gmail.com>
---
 board/overo/overo.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/board/overo/overo.c b/board/overo/overo.c
index 2845e7c..3f14b03 100644
--- a/board/overo/overo.c
+++ b/board/overo/overo.c
@@ -185,6 +185,7 @@ int misc_init_r(void)
 			expansion_config.revision,
 			expansion_config.fab_revision);
 		MUX_GUMSTIX();
+		setenv("expansionname", "tobiduo");
 		break;
 	case GUMSTIX_PALO35:
 		printf("Recognized Palo35 expansion board (rev %d %s)\n",
-- 
2.1.4

[U-Boot] [PATCH 3/6] overo: Add support for Palo35 expansion board

[Ash Charles]

Signed-off-by: Ash Charles <ashcharles@gmail.com>
---
 board/overo/overo.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/board/overo/overo.c b/board/overo/overo.c
index 3f14b03..d5ac1ad 100644
--- a/board/overo/overo.c
+++ b/board/overo/overo.c
@@ -193,6 +193,7 @@ int misc_init_r(void)
 			expansion_config.fab_revision);
 		MUX_GUMSTIX();
 		setenv("defaultdisplay", "lcd35");
+		setenv("expansionname", "palo35");
 		break;
 	case GUMSTIX_PALO43:
 		printf("Recognized Palo43 expansion board (rev %d %s)\n",
-- 
2.1.4

[U-Boot] [PATCH 4/6] omap3: overo: Use software BCH8 ECC for NAND

[Ash Charles]

Overo COMs have NAND flash that requires 4-bit ECC or better except for
the first sector which can use 1-bit ECC.  The boot ROM expects to load
a payload from NAND written using 1-bit hardware-based ECC.  In short,
write SPL to NAND something like this (4 times for redundancy):
 #> nandecc hw
 #> nand write ${loadaddr} 0x0 ${filesize}
 #> nand write ${loadaddr} 0x20000 ${filesize}
 #> nand write ${loadaddr} 0x40000 ${filesize}
 #> nand write ${loadaddr} 0x60000 ${filesize}

Then, switch back to software-based BCH8 for everything else:
 #> nandecc sw bch8

After [1], enlarge the max size of the SPL so the BCH code can fit.

[1] https://www.mail-archive.com/u-boot at lists.denx.de/msg163912.html

Signed-off-by: Ash Charles <ashcharles@gmail.com>
---
 include/configs/omap3_overo.h | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/include/configs/omap3_overo.h b/include/configs/omap3_overo.h
index c58636a..61213df 100644
--- a/include/configs/omap3_overo.h
+++ b/include/configs/omap3_overo.h
@@ -11,6 +11,12 @@
 #define CONFIG_NAND
 
 #include <configs/ti_omap3_common.h>
+#undef CONFIG_SPL_MAX_SIZE
+#define CONFIG_SPL_MAX_SIZE	(64*1024)
+#undef CONFIG_SPL_TEXT_BASE
+#define CONFIG_SPL_TEXT_BASE	0x40200000
+
+#define CONFIG_BCH
 
 /* Display CPU and Board information */
 #define CONFIG_DISPLAY_CPUINFO
@@ -212,17 +218,22 @@
 
 /* NAND boot config */
 #define CONFIG_SYS_NAND_BUSWIDTH_16BIT	16
+#define CONFIG_SYS_NAND_MAX_ECCPOS  56
 #define CONFIG_SYS_NAND_5_ADDR_CYCLE
 #define CONFIG_SYS_NAND_PAGE_COUNT	64
 #define CONFIG_SYS_NAND_PAGE_SIZE	2048
 #define CONFIG_SYS_NAND_OOBSIZE		64
 #define CONFIG_SYS_NAND_BLOCK_SIZE	(128*1024)
 #define CONFIG_SYS_NAND_BAD_BLOCK_POS	NAND_LARGE_BADBLOCK_POS
-#define CONFIG_SYS_NAND_ECCPOS		{2, 3, 4, 5, 6, 7, 8, 9,\
-						10, 11, 12, 13}
+#define CONFIG_SYS_NAND_ECCPOS      {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, \
+					13, 14, 16, 17, 18, 19, 20, 21, 22, \
+					23, 24, 25, 26, 27, 28, 30, 31, 32, \
+					33, 34, 35, 36, 37, 38, 39, 40, 41, \
+					42, 44, 45, 46, 47, 48, 49, 50, 51, \
+					52, 53, 54, 55, 56}
 #define CONFIG_SYS_NAND_ECCSIZE		512
-#define CONFIG_SYS_NAND_ECCBYTES	3
-#define CONFIG_NAND_OMAP_ECCSCHEME	OMAP_ECC_HAM1_CODE_HW
+#define CONFIG_SYS_NAND_ECCBYTES	13
+#define CONFIG_NAND_OMAP_ECCSCHEME	OMAP_ECC_BCH8_CODE_HW_DETECTION_SW
 #define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_TEXT_BASE
 #define CONFIG_SYS_NAND_U_BOOT_OFFS	0x80000
 /* NAND: SPL falcon mode configs */
-- 
2.1.4

[U-Boot] [PATCH 5/6] omap3: overo: Allow boot with kernel in UBI rootfs

[Ash Charles]

If regular NAND booting fails to find a valid uImage in the
kernel partition in NAND, try to boot using a zImage and dtb found
in a UBI volume in the rootfs partition.  This is the NAND analog
of mmc zImage booting for device-tree based kernels.

Signed-off-by: Ash Charles <ashcharles@gmail.com>
Signed-off-by: Arun Bharadwaj <arun@gumstix.com>
---
 include/configs/omap3_overo.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/configs/omap3_overo.h b/include/configs/omap3_overo.h
index 61213df..e1db29a 100644
--- a/include/configs/omap3_overo.h
+++ b/include/configs/omap3_overo.h
@@ -140,6 +140,8 @@
 		"bootm ${loadaddr}\0" \
 	"loadzimage=load mmc ${mmcdev}:2 ${loadaddr} ${bootdir}/${bootfile}\0" \
 	"loadfdt=load mmc ${mmcdev}:2 ${fdtaddr} ${bootdir}/${fdtfile}\0" \
+	"loadubizimage=ubifsload ${loadaddr} ${bootdir}/${bootfile}\0" \
+	"loadubifdt=ubifsload ${fdtaddr} ${bootdir}/${fdtfile}\0" \
 	"mmcbootfdt=echo Booting with DT from mmc ...; " \
 		"run mmcargs; " \
 		"bootz ${loadaddr} - ${fdtaddr}\0" \
@@ -148,6 +150,13 @@
 		"if nand read ${loadaddr} linux; then " \
 			"bootm ${loadaddr};" \
 		"fi;\0" \
+	"nanddtsboot=echo Booting from nand with DTS...; " \
+		"run nandargs; " \
+		"ubi part rootfs; "\
+		"ubifsmount ubi0:rootfs; "\
+		"run loadubifdt; "\
+		"run loadubizimage; "\
+		"bootz ${loadaddr} - ${fdtaddr}\0" \
 
 #define CONFIG_BOOTCOMMAND \
 	"mmc dev ${mmcdev}; if mmc rescan; then " \
@@ -175,6 +184,10 @@
 		"fi;" \
 	"fi;" \
 	"run nandboot; " \
+	"if test -z \"${fdtfile}\"; then "\
+		"setenv fdtfile omap3-${boardname}-${expansionname}.dtb;" \
+	"fi;" \
+	"run nanddtsboot; " \
 
 /*
  * Miscellaneous configurable options
-- 
2.1.4

[U-Boot] [PATCH 6/6] overo: Override RAM setup for rev. 0 boards

[Ash Charles]

From: Arun Bharadwaj <arun@gumstix.com>

Overo boards with board revision 0 use a 256MB RAM + 256MB NAND chip.
For an unknown reason, these boards fail to boot a 3.17.8 kernel based
on the RAM size configuration in u-boot.  As a workaround, fake out the
RAM setting in u-boot (discussion [1]).

[1] http://gumstix.8.x6.nabble.com/running-built-images-tt4969794.html

Signed-off-by: Arun Bharadwaj <arun@gumstix.com>
Signed-off-by: Ash Charles <ashcharles@gmail.com>
---
 board/overo/spl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/board/overo/spl.c b/board/overo/spl.c
index 64c33d6..e1652c3 100644
--- a/board/overo/spl.c
+++ b/board/overo/spl.c
@@ -59,7 +59,7 @@ void get_board_mem_timings(struct board_sdrc_timings *timings)
         timings->mr = MICRON_V_MR_165;
         switch (get_board_revision()) {
         case REVISION_0: /* Micron 1286MB/256MB, 1/2 banks of 128MB */
-                timings->mcfg = MICRON_V_MCFG_165(128 << 20);
+                timings->mcfg = MICRON_V_MCFG_165(256 << 20);
                 timings->ctrla = MICRON_V_ACTIMA_165;
                 timings->ctrlb = MICRON_V_ACTIMB_165;
                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
-- 
2.1.4

[U-Boot] [U-Boot, 6/6] overo: Override RAM setup for rev. 0 boards

[Tom Rini]

On Tue, Apr 28, 2015 at 04:17:55PM -0700, Ash Charles wrote:

> From: Arun Bharadwaj <arun@gumstix.com>
> 
> Overo boards with board revision 0 use a 256MB RAM + 256MB NAND chip.
> For an unknown reason, these boards fail to boot a 3.17.8 kernel based
> on the RAM size configuration in u-boot.  As a workaround, fake out the
> RAM setting in u-boot (discussion [1]).
> 
> [1] http://gumstix.8.x6.nabble.com/running-built-images-tt4969794.html
> 
> Signed-off-by: Arun Bharadwaj <arun@gumstix.com>
> Signed-off-by: Ash Charles <ashcharles@gmail.com>

Just for the record (since I just dug into it), this change was included
in the v2 of the series that created board/overo/spl.c and thus not
needed.

-- 
Tom
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[U-Boot] [U-Boot, 1/6] omap3: overo: Set the Arbor43C 'expansionname'

[Tom Rini]

On Tue, Apr 28, 2015 at 04:17:50PM -0700, Ash Charles wrote:

> The Gumstix Arbor43C expansion board [1] uses a customized device tree
> file.  When this expansion board is detected, load this file.
> 
> [1] https://store.gumstix.com/index.php/products/635/
> 
> Signed-off-by: Ash Charles <ashcharles@gmail.com>

Applied to u-boot/master, thanks!

-- 
Tom
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[U-Boot] [U-Boot, 2/6] omap3: overo: Add DTS support for TobiDuo expansion

[Tom Rini]

On Tue, Apr 28, 2015 at 04:17:51PM -0700, Ash Charles wrote:

> From: Arun Bharadwaj <arun@gumstix.com>
> 
> Signed-off-by: Arun Bharadwaj <arun@gumstix.com>
> Signed-off-by: Ash Charles <ashcharles@gmail.com>

Applied to u-boot/master, thanks!

-- 
Tom
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[U-Boot] [U-Boot, 3/6] overo: Add support for Palo35 expansion board

[Tom Rini]

On Tue, Apr 28, 2015 at 04:17:52PM -0700, Ash Charles wrote:

> Signed-off-by: Ash Charles <ashcharles@gmail.com>

Applied to u-boot/master, thanks!

-- 
Tom
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[U-Boot] [U-Boot, 4/6] omap3: overo: Use software BCH8 ECC for NAND

[Tom Rini]

On Tue, Apr 28, 2015 at 04:17:53PM -0700, Ash Charles wrote:

> Overo COMs have NAND flash that requires 4-bit ECC or better except for
> the first sector which can use 1-bit ECC.  The boot ROM expects to load
> a payload from NAND written using 1-bit hardware-based ECC.  In short,
> write SPL to NAND something like this (4 times for redundancy):
>  #> nandecc hw
>  #> nand write ${loadaddr} 0x0 ${filesize}
>  #> nand write ${loadaddr} 0x20000 ${filesize}
>  #> nand write ${loadaddr} 0x40000 ${filesize}
>  #> nand write ${loadaddr} 0x60000 ${filesize}
> 
> Then, switch back to software-based BCH8 for everything else:
>  #> nandecc sw bch8
> 
> After [1], enlarge the max size of the SPL so the BCH code can fit.
> 
> [1] https://www.mail-archive.com/u-boot at lists.denx.de/msg163912.html
> 
> Signed-off-by: Ash Charles <ashcharles@gmail.com>

Applied to u-boot/master, thanks!

-- 
Tom
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[U-Boot] [U-Boot, 5/6] omap3: overo: Allow boot with kernel in UBI rootfs

[Tom Rini]

On Tue, Apr 28, 2015 at 04:17:54PM -0700, Ash Charles wrote:

> If regular NAND booting fails to find a valid uImage in the
> kernel partition in NAND, try to boot using a zImage and dtb found
> in a UBI volume in the rootfs partition.  This is the NAND analog
> of mmc zImage booting for device-tree based kernels.
> 
> Signed-off-by: Ash Charles <ashcharles@gmail.com>
> Signed-off-by: Arun Bharadwaj <arun@gumstix.com>

Applied to u-boot/master, thanks!

-- 
Tom
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[U-Boot] [U-Boot, 6/6] overo: Override RAM setup for rev. 0 boards

[Ash Charles]

Ah---good catch.  Thanks for the explanation Tom.
--Ash

On Sun, May 10, 2015 at 7:07 AM, Tom Rini <trini@konsulko.com> wrote:
> On Tue, Apr 28, 2015 at 04:17:55PM -0700, Ash Charles wrote:
>
>> From: Arun Bharadwaj <arun@gumstix.com>
>>
>> Overo boards with board revision 0 use a 256MB RAM + 256MB NAND chip.
>> For an unknown reason, these boards fail to boot a 3.17.8 kernel based
>> on the RAM size configuration in u-boot.  As a workaround, fake out the
>> RAM setting in u-boot (discussion [1]).
>>
>> [1] http://gumstix.8.x6.nabble.com/running-built-images-tt4969794.html
>>
>> Signed-off-by: Arun Bharadwaj <arun@gumstix.com>
>> Signed-off-by: Ash Charles <ashcharles@gmail.com>
>
> Just for the record (since I just dug into it), this change was included
> in the v2 of the series that created board/overo/spl.c and thus not
> needed.
>
> --
> Tom