Commit graph

16 commits

Author SHA1 Message Date
Peter Tyser
9d921f19b3 post/i2c: Add ability to ignore I2C devices
Add the ability to not report an I2C POST error for a set of given I2C
addresses on bootup.  This is useful for cases when a device may or may
not be present, and neither case is considered an error.  For example:

- Some form factors such as XMC and Compact PCI Express have an I2C
  EEPROM whose address changes based on geographical address.  Eg
  installed in one slot its EEPROM address is, 0x50, in another its
  0x51, etc.  This allows multiple devices to have their EEPROMs present
  on the same I2C bus.  Thus the I2C devices present for an XMC or
  CPCIe card depend on if and where other cards are installed in the
  same system.

- Some cards have optional I2C devices.  Eg one hardware build
  configuration has different I2C devices than another and software
  can't determine if the optional device should be present or not.

- Some cards have optional daughtercards with I2C devices on them.

- I2C EEPROMs address range depends on their size.  Its possible to
  support differently size EEPROMs by only probing the EEPROM's base
  address and ignoring the other addresses that are impacted by its
  size.

A new CONFIG_SYS_POST_I2C_IGNORES define has been added which specifies
a list of I2C addresses for the I2C POST to ignore.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Heiko Schocher <hs@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-10-22 02:19:14 -05:00
Peter Tyser
60aaaa0782 post/i2c: Rename I2C_ADDR_LIST to CONFIG_SYS_POST_I2C_ADDRS
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Heiko Schocher <hs@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-10-22 02:19:00 -05:00
Peter Tyser
9f949c9ac2 post/i2c: Don't probe address 0
According to the I2C specification device address 0 is the "general call
address", ie a broadcast address.  The I2C specification states that the
format of a general call uses at least 2 bytes, which U-Boot's probing
routine does not adhere to.

Not probing device address 0 will prevent possible issues with devices
that accept general calls.  Additionally, this change shouldn't reduce
POST coverage since each I2C device should still be accessed via its
own, unique address.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Heiko Schocher <hs@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-10-22 02:18:42 -05:00
Peter Tyser
7e263cea88 post/i2c: Clean up detection logic
The logic previously used in the I2C post was a bit convoluted.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Heiko Schocher <hs@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-10-22 02:18:36 -05:00
Peter Tyser
b9b1bc8542 post/i2c: General clean up
- Clean up ifdeffery
- Update coding style

No functional change should have occurred.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Heiko Schocher <hs@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-10-22 02:18:30 -05:00
York Sun
284170309c Expand POST memory test to support arch-depended implementation.
Add weak functions to enable architecture depended preparation, address
advancing, cleaning up and error handling.

These weak functions provides the framwork to implemente arch/platform
dependent code for initializing/maintenance/restore the start address, size,
physical address as well as memory mapping before/between/after memory test.
arch_memory_failure_handle can also be implemented in case more care is needed
for arch/platform.

Signed-off-by: York Sun <yorksun@freescale.com>
2010-10-19 22:28:59 +02:00
Jean-Christophe PLAGNIOL-VILLARD
6d0f6bcf33 rename CFG_ macros to CONFIG_SYS
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-10-18 21:54:03 +02:00
Wolfgang Denk
53677ef18e Big white-space cleanup.
This commit gets rid of a huge amount of silly white-space issues.
Especially, all sequences of SPACEs followed by TAB characters get
removed (unless they appear in print statements).

Also remove all embedded "vim:" and "vi:" statements which hide
indentation problems.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-05-21 00:14:08 +02:00
Wolfgang Denk
4b7a6dd896 Merge branch 'master' of /home/wd/git/u-boot/lwmon5
Conflicts:

	common/cmd_bootm.c
	common/cmd_log.c
	include/common.h
	post/board/lwmon5/Makefile
	post/board/lwmon5/dsp.c
	post/board/lwmon5/dspic.c
	post/board/lwmon5/fpga.c
	post/board/lwmon5/gdc.c
	post/board/lwmon5/sysmon.c
	post/board/lwmon5/watchdog.c

Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-04-25 11:32:01 +02:00
Yuri Tikhonov
2d2b994a30 POST: move CONFIG_POST to Makefiles
Introduce the new logical option CONFIG_HAS_POST which is set when the
platform has CONFIG_POST set. Use CONFIG_HAS_POST in the post/ Makefiles
to determine should the POST libs be compiled for the selected target
platform, or not.

To avoid breaking u-boot linking process, the empty post/libpost.a file is
created for platforms which do not have POSTs.

Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-04-22 14:40:19 +02:00
Yuri Tikhonov
0a51e9248e POST: preparations for moving CONFIG_POST to Makefiles
Remove CONFIG_POST ifdefs from the post/ source files.

Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-04-22 14:38:38 +02:00
Yuri Tikhonov
b73a19e160 LWMON5: POST RTC fix
Modify the RTC API to provide one a status for the time reported by
the rtc_get() function:
  0 - a reliable time is guaranteed,
< 0 - a reliable time isn't guaranteed (power fault, clock issues,
      and so on).

The RTC chip drivers are responsible for providing this info if the
corresponding chip supports such functionality. If not - always
report that the time is reliable.

The POST RTC test was modified to detect the RTC faults utilizing
this new rtc_get() feature.

Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
2008-03-20 21:48:46 +01:00
Anatolij Gustschin
44b4dbed41 Fix warnings while compilation of post/drivers/memory.c
Fix warnings while compilation with new gcc in eldk-4.2

Signed-off-by: Anatolij Gustschin <agust@denx.de>
2008-03-02 21:42:20 +01:00
Yuri Tikhonov
9c02defc29 POST: limit memory test area to not touch global data anymore
As experienced on lwmon5, on some boards the POST memory test can
corrupt the global data buffer (bd). This patch fixes this issue
by checking and limiting this area.

Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2007-08-25 05:07:16 +02:00
Sergei Poselenov
b44896215a Merged POST framework with the current TOT.
Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com>
2007-07-05 08:17:37 +02:00
Wolfgang Denk
ad5bb451ad Restructure POST directory to support of other CPUs, boards, etc. 2007-03-06 18:08:43 +01:00