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