AST2700 is the 7th generation of Aspeed BMC SoCs.
A 32-bits Ibex RISC-V core is integrated as the boot MCU to run the first stage bootloader, SPL, for the platform initialization.
This patch series starts by revising RISC-V common code to relax certain restrictions for finer platform resource tuning. As this MCU adopts the "small" configuration provided by Ibex and has limited SRAM space.
In addition to the RV common code revision, the other patches provides the basic AST2700 platform code and DRAM/Timer drivers to succuessfully boot SPL and U-Boot on this Ibex-based MCU.
Chia-Wei Wang (8): riscv: Make A ISA extension selectable riscv: Make stack size shift configurable riscv: u-boot-spl.lds: Remove _image_binary_end alignment riscv: Add AST2700 SoC initial platform support timer: Add AST2700 IBEX timer support board: ibex_ast2700: Add FMC header support ram: ast2700: Add DRAM controller initialization configs: ibex-ast2700: Enable DRAM and timer driver
arch/riscv/Kconfig | 12 +- arch/riscv/cpu/ast2700/Kconfig | 6 + arch/riscv/cpu/ast2700/Makefile | 1 + arch/riscv/cpu/ast2700/cpu.c | 23 + arch/riscv/cpu/u-boot-spl.lds | 2 - arch/riscv/dts/Makefile | 1 + arch/riscv/dts/ast2700-ibex.dts | 22 + arch/riscv/dts/ast2700-u-boot.dtsi | 40 + arch/riscv/dts/ast2700.dtsi | 76 + arch/riscv/include/asm/arch-ast2700/fmc_hdr.h | 52 + arch/riscv/include/asm/arch-ast2700/scu.h | 145 + arch/riscv/include/asm/arch-ast2700/sdram.h | 137 + arch/riscv/include/asm/arch-ast2700/sli.h | 82 + board/aspeed/ibex_ast2700/Kconfig | 21 + board/aspeed/ibex_ast2700/MAINTAINERS | 7 + board/aspeed/ibex_ast2700/Makefile | 3 + board/aspeed/ibex_ast2700/fmc_hdr.c | 64 + board/aspeed/ibex_ast2700/ibex_ast2700.c | 85 + board/aspeed/ibex_ast2700/sli.c | 72 + configs/ibex-ast2700_defconfig | 94 + drivers/ram/Makefile | 2 +- drivers/ram/aspeed/Kconfig | 27 +- drivers/ram/aspeed/Makefile | 1 + ..._ddrphy_phyinit_ddr4-3200-nodimm-train2D.c | 2700 +++++++ ..._ddrphy_phyinit_ddr5-3200-nodimm-train2D.c | 6930 +++++++++++++++++ drivers/ram/aspeed/sdram_ast2700.c | 1036 +++ drivers/timer/Kconfig | 6 + drivers/timer/Makefile | 1 + drivers/timer/ast_ibex_timer.c | 45 + include/configs/ibex_ast2700.h | 12 + 30 files changed, 11696 insertions(+), 9 deletions(-) create mode 100644 arch/riscv/cpu/ast2700/Kconfig create mode 100644 arch/riscv/cpu/ast2700/Makefile create mode 100644 arch/riscv/cpu/ast2700/cpu.c create mode 100644 arch/riscv/dts/ast2700-ibex.dts create mode 100644 arch/riscv/dts/ast2700-u-boot.dtsi create mode 100644 arch/riscv/dts/ast2700.dtsi create mode 100644 arch/riscv/include/asm/arch-ast2700/fmc_hdr.h create mode 100644 arch/riscv/include/asm/arch-ast2700/scu.h create mode 100644 arch/riscv/include/asm/arch-ast2700/sdram.h create mode 100644 arch/riscv/include/asm/arch-ast2700/sli.h create mode 100644 board/aspeed/ibex_ast2700/Kconfig create mode 100644 board/aspeed/ibex_ast2700/MAINTAINERS create mode 100644 board/aspeed/ibex_ast2700/Makefile create mode 100644 board/aspeed/ibex_ast2700/fmc_hdr.c create mode 100644 board/aspeed/ibex_ast2700/ibex_ast2700.c create mode 100644 board/aspeed/ibex_ast2700/sli.c create mode 100644 configs/ibex-ast2700_defconfig create mode 100644 drivers/ram/aspeed/dwc_ddrphy_phyinit_ddr4-3200-nodimm-train2D.c create mode 100644 drivers/ram/aspeed/dwc_ddrphy_phyinit_ddr5-3200-nodimm-train2D.c create mode 100644 drivers/ram/aspeed/sdram_ast2700.c create mode 100644 drivers/timer/ast_ibex_timer.c create mode 100644 include/configs/ibex_ast2700.h