TI

meta-ti:

meta-ti BSP layer

• Repository:

– git://git.yoctoproject.org/meta-ti

– http://git.yoctoproject.org/cgit/cgit.cgi/meta-ti/

• Mailing list:

– https://lists.yoctoproject.org/listinfo/meta-ti

• GMANE archives

What is BSP layer?

“A collection of information that defines how to support a particular hardware device, set of devices, or hardware platform.”

The BSP consists of a file structure inside a base directory, which uses the following naming convention:

meta-<bsp_name>

Below is the common form for the file structure inside a base directory. While you can use this basic form for the standard, realize that the actual structures for specific BSPs could differ.

• meta-<bsp_name>/

• meta-<bsp_name>/<bsp_license_file>

• meta-<bsp_name>/README

• meta-<bsp_name>/binary/<bootable_images>

• meta-<bsp_name>/conf/layer.conf

• meta-<bsp_name>/conf/machine/*.conf

• meta-<bsp_name>/recipes-bsp/*

• meta-<bsp_name>/recipes-graphics/*

• meta-<bsp_name>/recipes-graphics/*

  • meta-ti/

  • meta-ti/COPYING.MIT

  • meta-ti/README

  • meta-ti/conf/layer.conf

  • meta-ti/conf/machine/*.conf (~15)

    • am180x-evm.conf (ARM9)

    • am335x-evm.conf (Cortex-A8)

    • c6a816x-evm.conf (ARM+DSP)

    • beaglebone.conf (Community)

    • pandaboard.conf (Cortex-A9)

  • meta-ti/recipes-bsp/*

    • powervr-drivers/omap3-sgx-modules_x.y.z.bb

    • u-boot/*.bb

    • x-load/*.bb

  • meta-ti/recipes-graphics/*

    • libgles/libgles-omap3_x.y.z.bb (OpenGL/ES)

  • meta-ti/recipes-kernel/linux/linux-<soc>_x.y.z.bb

Dependencies & limitations

URI: git://git.openembedded.org/openembedded-corelayers: meta

URI: git://git.openembedded.org/meta-openembeddedlayers: toolchain-layer

There are known issues when using a toolchain with gcc-4.6 and binutils-2.22 from OpenEmbedded-Core, thus it is recommended to use toolchain-layer from meta-openembedded with gcc-4.5 + Linaro patches and binutils-2.20.1.

GCCVERSION = "4.5%"

BINUVERSION = "2.20.1"

Linux kernel

• Not (yet) using linux-yocto structure

• Using SOC-specific kernels (→ naming)

• Staging trees from arago-project.org

• Different versions (2.6.32 – 3.2)

• Ongoing unification and upstreaming

• Baseports & device drivers from PSP

• Archs: ARM9, Cortex-A8, Cortex-A9 (Cortex-A15)

• Families

  • Official: OMAP, DaVinci, etc.

  • Unofficial: Netra, Centaurus, Subarctic, etc.11

• recipes-kernel/linux/

  • linux_3.0.bb (upstream)

  • linux_3.1.bb

  • linux-ti33x-psp_3.2.bb

  • linux-omapl138-psp_2.6.37.bb

  • linux-ti81xx-psp_2.6.37.bb (SOC PSP)

  • linux-omap-psp_2.6.32.bb

  • linux-omap4_3.1.0.bb

  • linux-davinci_git.bb (old ARM9 tree)

Bootloaders

1st stage – x-load, u-boot SPL

• Small

• Load in internal SRAM

• Initialize external SDRAM

• Load 2nd stage BL

2nd stage – u-boot

• Initialize peripherals

• Basic support for accessing Flash, MMC, Ethernet

• Basic networking support for DHCP, TFTP etc.

• Loads kernel

Graphics

• Imagination Technologies PowerVR/SGX

• Support for OMAP3, TI814x/816x, TI33x

• Kernel device driver

  • recipes-bsp/powervr-drivers/omap3-sgx-modules_x.y.z.bb

• OpenGL/ES libraries (X11/FB)

  • recipes-graphics/libgles/libgles-omap3_x.y.z.bb

• Proprietary binary

SOC_FAMILY

• Feature to group boards/machines

• Easily addressable by group/family

• Mostly in OVERRIDES

• Also in COMPATIBLE_MACHINES

• Not in PACKAGE_ARCHS

• In OE-Core:

  • conf/machine/include/soc-family.inc

• In meta-ti:

  • conf/machine/include/

• omap3.inc

• omap4.inc

• omapl138.inc

• ti33x.inc

• ti816x.inc

ERROR: Task 4053 (/home/satyam/ti-glsdk_dra7xx-evm_6_03_00_01/yocto-layers/sources/oe-core/meta/recipes-devtools/docbook-utils/docbook-utils-native_0.6.14.bb, do_compile) failed with exit code '1'