U-boot patches

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Page under construction... Construction.png Informations on this page are not guaranteed !!

General information

patches -1xx concern the board apf9328

patches -3xx concern the board apf27

patches -4xx concern the board apf51

List of patches

U-Boot 2010.03 patches for the APF9328

u-boot-2010.03-100-imx.patch: this set of patches is specific to the CM9328MX1/L/S CPUs - This impacts all platforms based in theseCPUs in U-Boot.

  • timer.c: Fixed a timer issue on the legacy version of U-Boot - so this patch should not be usefull right now. FIXME.
  • speed.c: Improve the PLL frequency to the full resolution of the PLL registers.
  • imx-regs.h: Add I2C module registers definition to be used by the I2c driver.

u-boot-2010.03-110-apf9328.patch: APF9328 main source files.

u-boot-2010.03-111-apf9328-DM9000.patch: fixes some bugs and issues in the DM9000 ethernet driver - also support to update the MAC address.

u-boot-2010.03-112-apf9328-makefile.patch: add apf9328 entry in the U-Boot makefile.

u-boot-2010.03-120-apf9328-tools.patch: add tool to generate the U-Boot.brec to upload U-Boot over a serial port - to be removed as armadeus BSP provides a python script to recover U-Boot.

u-boot-2010.03-140-ds1374.patch: support platforms with multi I2C buses.

u-boot-2010.03-150-apf9328-fixes_gcc_4_4_EABI_linking_issues.patch: Fixes EABI compilation issue with GCC 4.3 and later versions - Already fixed upstream, so it is not anymore useful.

U-Boot 2010.03 patches for the APF27

u-boot-2010.03-300-imx27.patch

add imx27 drivers:

  • imxfuse
  • I2C
  • some new functions get the core frequency of controllers

STATUS: in progress

  • add some #if defined(...) in generic.c
  • move cmd_imxfuse.c to common/
  • remove printf with hardcoded address in generic.c
NOTE: there is already a driver mxc_i2c.c with several cpu already supported, but not imx27.
The i2c function should be added here (with a new patch)

IDEAS: split this patch in 3 patchs
- one to add i2c feature on mxc_i2c.c
- one to add cmd for imxfuse
- one to add some features in generic.c

u-boot-2010.03-301-nand.patch

add nand features:

  • enhance nand bad block management for SPL support
  • support nand biterr command
NOTE: should be splitted in 2 patches

u-boot-2010.03-310-apf27.patch

add apf27 features:

  • board support
  • fpga support
NOTE: should be splitted in 2 patches

u-boot-2010.03-311-imx-nand-lock-unlock.patch: add iMX27 nand lock/unlock support

u-boot-2010.03-312-imx-nand-write-any-size.patch: Is this patch useful?

u-boot-2010.03-320-spartan.patch: Fix a bug in spartan driver.

u-boot-2010.03-321-add_spartan6.patch: add spartan6 driver

u-boot-2010.03-322-fpga_second_load_operator.patch: support spartan6 - spartan6 for apf27

u-boot-2010.03-330-fix-nand-debug.patch: fix compilation error in nand_btt.c

u-boot-2010.03-340-fix-fecmxc-debug.patch: fix fec bug to retrieve MAC address

u-boot-2010.03-350-fix-jffs2-warns.patch: remove extra 'print' messages on console.

U-Boot 2010.03 patches for the APF51

u-boot-2010.03-400-imx51.patch

u-boot-2010.03-401-apf51.patch

u-boot-2010.03-403-apf51-wdog.patch

u-boot-2010.03-404-apf51-fec.patch

u-boot-2010.03-407-imx51-nand.patch

u-boot-2010.03-409-apf51-nand-spl.patch

u-boot-2010.03-410-imx-iim.patch

u-boot-2010.03-411-Fix-high-voltage-nand-sd.patch

u-boot-2010.03-420-freescale-mxc_i2c-add_support_for_MX53_processor.patch

u-boot-2010.03-421-denx-mxc_i2c-add_support_for_the_iMX35_processor.patch

u-boot-2010.03-422-denx-mxc_i2c-get_rid_of__REG_access.patch

u-boot-2010.03-423-denx-mxc_i2c-address_failure_with_mx35_processor.patch

u-boot-2010.03-424-armadeus-mxc_i2c-add_support_for_the_iMX51_processor.patch

New organization of patches

Here is a proposition for a new organization of patches.

Motivation

The new organization should simplify the maintenance of patches and follow as much as possible the a common strategy already used for Buildroot and the Linux kernel. Also the patch should respect the requirements of the project in order to push the patches upstream.

Changes

  • Move U-Boot patches in the armadeus directory patches/u-boot
  • Have a link of the directory mentioned here above in buildroot/boot/u-boot - instead of the legacy path buildroot/target/u-boot
  • Use a subdirectory for each version of u-boot instead of file naming convention - This will simplify the update of these patches regarding GIT for the next versions of u-boot (not yet but I hope soon :( )
    • buildroot/boot/u-boot/u-boot-1.3.4/
    • buildroot/boot/u-boot/u-boot-2010.03/
    • ...
    • to support a new U-Boot release, just copy the latest U-Boot patch dir and name it with name of the U-Boot release. Therefore, the name of patch does not to contain any reference to U-Boot version (may be in a near future as Buildroot requires patches be named with a prefix u-boot-<version>- )
  • Each patch has to respect rules defined by U-Boot to expect to push back each patch upstream: http://www.denx.de/wiki/U-Boot/Patches
  • Software changes have to respect the U-Boot coding rules (same as linux kernel): http://www.denx.de/wiki/U-Boot/CodingStyle

..

feedback from upstream

V1

SENT:

FEEDBACK:

  • http://lists.denx.de/pipermail/u-boot/2012-June/127149.html
    1. You missed an entry to the MAINTAINERS file : OK
    2. This ifdef seems to be useless at this location : OK
    3. Can't this be converted into a C file instead? : OK
    4. To many new lines here : file removed
  • http://lists.denx.de/pipermail/u-boot/2012-June/127145.html
    1. nand_spl is deprecated -- please use the new spl/ infrastructure : OK
    2. Why do you need to redefine this stuff? : dont know how to avoid this
  • http://lists.denx.de/pipermail/u-boot/2012-July/127891.html
    1. Really this patch must be merged with patch 2/5: "Add support for the : do it later
    2. See my comment about the SPL patch : OK
    3. We use a macro for CONFIG_SYS_GBL_DATA_SIZE. Is it not suitable for your : OK
    4. Do not let dead code : OK
    5. Drop also this line - check in the whole file for these occurrencies : OK
    6. drop also this dead code : OK
    7. Do you have several hardware version of the same board or which is the : need to answer
    8. Really there is another way to get the peripheral clocks for the i.MX : pending
    9. Why do these config belong to the config file ? You introduce several : OK
    10. Maybe you should move also FPGA related values to the fpga file - and as : moved to board
  • http://lists.denx.de/pipermail/u-boot/2012-July/127892.html
    1. nand_spl is obsolete - new boards should add spl support with the newer : OK
  • http://lists.denx.de/pipermail/u-boot/2012-July/127893.html
    1. Maybe you can drop this and compiling this file only if CONFIG_FPGA is : OK
    2. No, we have in u-boot a GPIO API to access the GPIOs. Check : OK
    3. Do not set your special version - use DEBUG instead : OK
    4. Wrong multiline comment - it should be like this : OK
    5. initialize : OK
  • http://lists.denx.de/pipermail/u-boot/2012-July/127894.html
    1. clean / distclean are not needed, drop these rules : OK
    2. For my understanding: who does store the version number in the fuses ? : need to answer
    3. It seems to me there are some hidden important information in the fuses : OK
    4. Why is it needed ? : need to answer
    5. This is quite dead code.. : OK
    6. It is not clear to me why you have your special way to set up the MAC : OK
    7. This is SOC-related, and not board related. It belongs to the SOC code : OK
    8. config.mk is obsolete and must not be added for new boards. TEXT_BASE : OK
    9. The board are grouped for SOC, and then sorted alphabetically. The entry : OK

V2

SENT:

FEEDBACK:

  • http://lists.denx.de/pipermail/u-boot/2012-November/140882.html
    1. Please merge 2/4 and 3/4 : OK
    2. Please sort MAINTAINERS by maintainer name as stated in the file heading : OK
    3. aside: I am somewhat surprised that something : request an answer to jorasse
    4. create a function that initializes one port passed as an argument with an array of consts passed as a second argument : OK
    5. Is this used?  : need an answer
    6. What's the point of defining lowlevel_init? : need an answer
  • http://lists.denx.de/pipermail/u-boot/2012-November/140883.html
    1. This is needed by 2/4 to get truly useable support. Please merge both patches : OK
    2. Please avoid mixed case identifiers : OK
    3. Please avoid comments that paraphrase ASM in pseudo-C : OK

V3

SENT:

FEEDBACK:

    • I tried your patches, but build fails:
    • This should be declared static, I think.
    • Doesn't the following code work ?
    • Do you need this ?
    • you search for the environment
    • Not clear at all
    • This seems dangerous
    • I suggest you move this function in a separate patch
    • Style, wrong multiline comment.
    • Is it old code ?
    • I understand why
    • I am unsure if I have understood
    • ..but ACFG_APF27_CUSTOM is not set at all
    • If SPL can link mxc_nand.c
    • This is also done by generic SPL code
    • You also duplicate stuff that is in the generic
    • I have not understood why using CONFIG_SPL_FRAMEWORK does not work
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