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Regression: SDP4430 - Fails to boot - bisect indicates i2c adaptation

U-Boot In review Nishanth Menon 5 participants 8 messages Jan 8, 2014 – Feb 21, 2014

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Nishanth Menon

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#0 lore raw

Hi,

I happened to try SDP4430 out a earlier today with tip of u-boot mainline and it refused to even bring up SPL logs. Last working tag happens to be v2013.10
Earliest fail tag happens to be v2014.01-rc1

A bisect showed the following:
http://pastebin.mozilla.org/3962513

"i2c, omap24xx: convert driver to new mutlibus/mutliadapter framework"

At commit 6789e84ecaa8f45d053084e08c381284a04abff7 it does indeed fail to boot up, git reset --hard HEAD^ allows the board to boot up successfully.

Signature · 2 lines
Regards,
Nishanth Menon
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#1 lore raw

PATCH 1/1 omap4_common: config: remove I2C for SPL mode

Commit 6789e84ecaa8f45d053084e08c381284a04abff7 (i2c, omap24xx:
convert driver to new mutlibus/mutliadapter framework) intended to make I2C driver compatible with latest changes. It unfortunately has had a impact on size on SPL as well. For example on SDP4430, 32032 bytes before/MLO
35416 bytes after/MLO

With this mentioned commit, MLO stops booting on SDP4430 as only 32K is accessible for non-secure (bootloader) s/w on GP devices and the size increase to 56K fails boot.

On the latest u-boot commit e7be18225fbea76d1f0034b224f0d1e60f07cfcf, MLO is now at size 35592 bytes, However, I2C is not necessary for SPL to function as we use SR_I2C for controlling the PMIC. Disabling I2C reduces MLO to 32224 bytes which allows OMAP4 GP platform to boot up.

Since this is common for all OMAP4 platforms, remove the need for I2C for SPL builds in the common config.

Signed-off-by Nishanth Menon <[email protected]>

---

Though I originally reported this for SDP4430[1], a test on PandaBoard-ES also indicated fail to boot!

Tested on PandaBoard-ES and SDP4430
Build result: http://pastebin.mozilla.org/3963101

Test log:
SDP4430: http://pastebin.mozilla.org/3963123
PandaBoard-ES: http://pastebin.mozilla.org/3963134

[1] http://marc.info/?l=u-boot&m=138914031918099&w=2

 include/configs/omap4_common.h |    6 ++++++
 1 file changed, 6 insertions(+)
include/configs/omap4_common.h +6 -0
index ea56eeb..7cfd471 100644
@@ -154,4 +154,10 @@
 #define CONFIG_SPL_DISPLAY_PRINT
 #define CONFIG_SPL_LDSCRIPT "$(CPUDIR)/omap-common/u-boot-spl.lds"
 
+#ifdef CONFIG_SPL_BUILD
+/* No need for i2c in SPL mode as we will use SRI2C for PMIC access on OMAP4 */
+#undef CONFIG_SYS_I2C
+#undef CONFIG_SYS_I2C_OMAP24XX
+#endif
+
 #endif /* __CONFIG_OMAP4_COMMON_H */
Signature · 1 line
1.7.9.5
#2 lore raw

PATCH 1/1 omap4_common: config: remove I2C for SPL mode

Hi Nishanth,

Quoted 43 lines · Nishanth Menon

Commit 6789e84ecaa8f45d053084e08c381284a04abff7 (i2c, omap24xx:
convert driver to new mutlibus/mutliadapter framework) intended to make I2C driver compatible with latest changes. It unfortunately has had a impact on size on SPL as well. For example on SDP4430, 32032 bytes before/MLO
35416 bytes after/MLO

With this mentioned commit, MLO stops booting on SDP4430 as only 32K is accessible for non-secure (bootloader) s/w on GP devices and the size increase to 56K fails boot.

On the latest u-boot commit e7be18225fbea76d1f0034b224f0d1e60f07cfcf, MLO is now at size 35592 bytes, However, I2C is not necessary for SPL to function as we use SR_I2C for controlling the PMIC. Disabling I2C reduces MLO to 32224 bytes which allows OMAP4 GP platform to boot up.

Since this is common for all OMAP4 platforms, remove the need for I2C for SPL builds in the common config.

Signed-off-by Nishanth Menon <[email protected]>

---

Though I originally reported this for SDP4430[1], a test on PandaBoard-ES also indicated fail to boot!

Tested on PandaBoard-ES and SDP4430
Build result: http://pastebin.mozilla.org/3963101

Test log:
SDP4430: http://pastebin.mozilla.org/3963123
PandaBoard-ES: http://pastebin.mozilla.org/3963134

[1] http://marc.info/?l=u-boot&m=138914031918099&w=2

 include/configs/omap4_common.h |    6 ++++++
 1 file changed, 6 insertions(+)
include/configs/omap4_common.h +0 -0
index ea56eeb..7cfd471 100644

include/configs/omap4_common.h line 163

Quoted 10 lines
include/configs/omap4_common.h +6 -0
@@ -154,4 +154,10 @@
 #define CONFIG_SPL_DISPLAY_PRINT
 #define CONFIG_SPL_LDSCRIPT "$(CPUDIR)/omap-common/u-boot-spl.lds"
 
+#ifdef CONFIG_SPL_BUILD
+/* No need for i2c in SPL mode as we will use SRI2C for PMIC access on OMAP4 */
+#undef CONFIG_SYS_I2C
+#undef CONFIG_SYS_I2C_OMAP24XX
+#endif
+
 #endif /* __CONFIG_OMAP4_COMMON_H */

correct. Thanks for the fix. Also with size remaining still as 32224 bytes OMAP4 HS devices might not boot up. Anyways thats separate and something more like this
patch has to be removed.

Reviewed-by Sricharan R <[email protected]>

Regards,
Sricharan

#7 lore raw
In reply to Nishanth Menon

Hi Nishanth,

Quoted 11 lines · Nishanth Menon

Hi,

I happened to try SDP4430 out a earlier today with tip of u-boot mainline and it refused to even bring up SPL logs. Last working tag happens to be v2013.10
Earliest fail tag happens to be v2014.01-rc1

A bisect showed the following:
http://pastebin.mozilla.org/3962513

"i2c, omap24xx: convert driver to new mutlibus/mutliadapter framework"

This is already reported and a patch is already sent for this. This patch is in u-boot-arm and ll soon get merged in u-boot.
http://git.denx.de/?p=u-boot/u-boot-arm.git;a=commit;h=dcc23576384dbb875a4427dcfa9ac8d237230d42

Thanks and regards,
Lokesh

Quoted 5 lines

At commit 6789e84ecaa8f45d053084e08c381284a04abff7 it does indeed fail to boot up, git reset --hard HEAD^ allows the board to boot up successfully.

#3 lore raw

PATCH 1/1 omap4_common: config: remove I2C for SPL mode

In reply to Nishanth Menon
Quoted 6 lines · Nishanth Menon

Commit 6789e84ecaa8f45d053084e08c381284a04abff7 (i2c, omap24xx:
convert driver to new mutlibus/mutliadapter framework) intended to make I2C driver compatible with latest changes. It unfortunately has had a impact on size on SPL as well. For example on SDP4430, 32032 bytes before/MLO
35416 bytes after/MLO

Ah toolchain fun, that's why I hadn't seen this, all of mine build around 32KiB.

So, where is the 38KiB max size we set valid, on OMAP4 devices?

Signature · 8 lines
Tom
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#4 lore raw

PATCH 1/1 omap4_common: config: remove I2C for SPL mode

HI

Quoted 9 lines · Tom Rini
Quoted 6 lines · Nishanth Menon

Commit 6789e84ecaa8f45d053084e08c381284a04abff7 (i2c, omap24xx:
convert driver to new mutlibus/mutliadapter framework) intended to make I2C driver compatible with latest changes. It unfortunately has had a impact on size on SPL as well. For example on SDP4430, 32032 bytes before/MLO
35416 bytes after/MLO

Quoted 5 lines

Ah toolchain fun, that's why I hadn't seen this, all of mine build around 32KiB.

So, where is the 38KiB max size we set valid, on OMAP4 devices?

I'm working on a different version of u-boot for omap4460 and my spl is very big

/* Defines for SPL */
#define CONFIG_SPL
#if 0
#define CONFIG_SPL_TEXT_BASE 0x40303080
#define CONFIG_SPL_MAX_SIZE (38 * 1024)
#else
#define CONFIG_SPL_TEXT_BASE 0x40303080
#define CONFIG_SPL_MAX_SIZE ((40 * 1024) + 512)
#endif

With this size I can boot from serial and from sdcard.

Michael

Quoted 8 lines

--
Tom

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author
#5 lore raw

PATCH 1/1 omap4_common: config: remove I2C for SPL mode

In reply to Tom Rini
Quoted 4 lines · Tom Rini

Ah toolchain fun, that's why I hadn't seen this, all of mine build around 32KiB.

arm-linux-gnueabi-gcc --version
arm-linux-gnueabi-gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3 Copyright (C) 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Quoted 1 line

So, where is the 38KiB max size we set valid, on OMAP4 devices?

as I mentioned in my commit message,

32k limit is on OMAP4 devices -> Default accessible "non-secure" SRAM out of the total of 56K is only 32K.

Sricharan already pointed at
http://git.denx.de/?p=u-boot/u-boot-arm.git;a=commit;h=dcc23576384dbb875a4427dcfa9ac8d237230d42

Any further savings will be great.
Regards,
Nishanth Menon

#6 lore raw

[U-Boot] omap4_common: config: remove I2C for SPL mode

In reply to Nishanth Menon
Quoted 17 lines · Nishanth Menon

Commit 6789e84ecaa8f45d053084e08c381284a04abff7 (i2c, omap24xx:
convert driver to new mutlibus/mutliadapter framework) intended to make I2C driver compatible with latest changes. It unfortunately has had a impact on size on SPL as well. For example on SDP4430, 32032 bytes before/MLO
35416 bytes after/MLO

With this mentioned commit, MLO stops booting on SDP4430 as only 32K is accessible for non-secure (bootloader) s/w on GP devices and the size increase to 56K fails boot.

On the latest u-boot commit e7be18225fbea76d1f0034b224f0d1e60f07cfcf, MLO is now at size 35592 bytes, However, I2C is not necessary for SPL to function as we use SR_I2C for controlling the PMIC. Disabling I2C reduces MLO to 32224 bytes which allows OMAP4 GP platform to boot up.

Quoted 5 lines

Since this is common for all OMAP4 platforms, remove the need for I2C for SPL builds in the common config.

Signed-off-by Nishanth Menon <[email protected]>
Reviewed-by Sricharan R <[email protected]>

Applied to u-boot-ti/master, thanks!

Signature · 8 lines
Tom
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