upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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3.8 KiB
3.8 KiB
Summary
=======
This README is about U-Boot support for Renesas's ARM Cortex-A9 based RMOBILE[1]
and Cortex-A9/A53/A57 based R-Car[2] family of SoCs. Renesas's RMOBILE/R-Car SoC
family contains an ARM Cortex-A9/A53/A57.
Currently the following boards are supported:
| SoC | Board | defconfig
|===============+========================================+===================
| R8A73A0 | KMC KZM-A9-GT [3] | kzm9g_config
| R8A7734 | Atmark-Techno Armadillo-800-EVA [4] | armadillo-800eva_config
|===============+========================================+===================
| R8A7790 H2 | Renesas Electronics Lager | lager_defconfig
| | Renesas Electronics Stout | stout_defconfig
|---------------+----------------------------------------+-------------------
| R8A7791 M2-W | Renesas Electronics Koelsch | koelsch_defconfig
| | Renesas Electronics Porter | porter_defconfig
|---------------+----------------------------------------+-------------------
| R8A7792 V2H | Renesas Electronics Blanche | blanche_defconfig
|---------------+----------------------------------------+-------------------
| R8A7793 M2-N | Renesas Electronics Gose | gose_defconfig
|---------------+----------------------------------------+-------------------
| R8A7794 E2 | Renesas Electronics Alt | alt_defconfig
| | Renesas Electronics Silk | silk_defconfig
|===============+========================================+===================
| R8A7795 H3 | Renesas Electronics Salvator-XS ES2.0+ | r8a7795_salvator-x_defconfig
| R8A7795 H3 | Renesas Electronics ULCB ES2.0+ | r8a7795_ulcb
|---------------+----------------------------------------+-------------------
| R8A7796 M3-W | Renesas Electronics Salvator-X | r8a7796_salvator-x_defconfig
| R8A7796 M3-W | Renesas Electronics ULCB | r8a7796_ulcb
|---------------+----------------------------------------+-------------------
| R8A77965 M3-N | Renesas Electronics Salvator-XS | r8a77965_salvator-x_defconfig
|---------------+----------------------------------------+-------------------
| R8A77970 V3M | Renesas Electronics Eagle | r8a77970_eagle_defconfig
|---------------+----------------------------------------+-------------------
| R8A77995 D3 | Renesas Electronics Draak | r8a77995_draak_defconfig
'===============+========================================+===================
Toolchain
=========
Either ARMv7 toolchain for 32bit Cortex-A9 systems or ARMv8 (aarch64)
toolchain for 64bit Cortex-A53/A57 systems. Currently we compile the
32bit systems with -march=armv5 to allow more compilers to work. (For
U-Boot code this has no performance impact.)
Currently, ELDK[5], Linaro[6], CodeSourcery[7] and Emdebian[8] supports
ARMv7. Modern distributions also contain ARMv7 and ARMv8 crosstoolchains
in their package feeds.
Build
=====
Locate defconfig in the table above. Then apply standard build procedure:
make <board>_defconfig
make
Note: Armadillo-800-EVA's U-Boot supports booting from SDcard only.
Please see "B.2 Appendix B Boot Specifications" in hardware manual.
Links
=====
[1] Renesas RMOBILE:
http://am.renesas.com/products/soc/assp/mobile/r_mobile/index.jsp
[2] Renesas R-Car:
http://am.renesas.com/products/soc/assp/automotive/index.jsp
[3] KZM-A9-GT
http://www.kmckk.co.jp/kzma9-gt/index.html
[4] Armadillo-800-EVA
http://armadillo.atmark-techno.com/armadillo-800-EVA
[5] ELDK
http://www.denx.de/wiki/view/ELDK-5/WebHome#Section_1.6.
[6] Linaro
http://www.linaro.org/downloads/
[7] CodeSourcey
http://www.mentor.com/embedded-software/codesourcery
[8] Emdebian
http://www.emdebian.org/crosstools.html