u-boot.git/arch/arm/include/asm/arch-aspeed/platform.h, branch main

arm: aspeed: add ASPEED AST2700 SoC family support

2026-06-29T19:43:20Z

Add initial support for the ASPEED AST2700, an arm64 (Cortex-A35) Baseboard Management Controller (BMC) SoC. AST2700 is Aspeed's 8th generation BMC and uses a dual-die architecture: SoC0 (the "CPU" die) hosts the four Cortex-A35 cores and its own SCU at 0x12c02000, while SoC1 (the "IO" die) hosts the peripherals and its own SCU at 0x14c02000. This commit adds: - ASPEED_AST2700 Kconfig option and the ast2700 mach subdir (mach Makefile, ast2700/Kconfig, board/aspeed/evb_ast2700/*) - arm64 MMU map covering the SoC device window and the DRAM region at 0x4_0000_0000 (up to 8 GiB) - lowlevel_init.S for early CPU bring-up - cpu-info: print SoC ID (AST2700/2720/2750 A0/A1/A2 variants) and reset cause (cold reset, EXT reset, WDT reset) - board_common: dram_init via UCLASS_RAM, AHBC timeout init - platform: env_get_location() that selects SPI/eMMC based on the IO-die HW strap; arch_misc_init() that exposes ${boot_device} and ${verify} to the boot script - SCU0/SCU1 register layout header (scu_ast2700.h) - configs/evb-ast2700_defconfig and include/configs/evb_ast2700.h for the AST2700 EVB board The defconfig depends on ast2700-evb.dts, which is introduced in a subsequent patch; this commit must be applied with the remaining series for evb-ast2700_defconfig to build. Signed-off-by: Ryan Chen

aspeed: ast2600: Enlarge SRAM size

2021-11-17T22:04:59Z

The AST2600 SRAM has been extended to 88KB since A1 chip revision. This patch updates the SRAM size to offer more space for early stack/heap use. Signed-off-by: Chia-Wei Wang Reviewed-by: Joel Stanley

aspeed: Add AST2600 platform support

2021-01-18T20:23:06Z

Add low level platform initialization for the AST2600 SoC. The 2-stage booting with U-Boot SPL are leveraged to support different booting mode. However, currently the patch supports only the booting from memory-mapped SPI flash. Signed-off-by: Chia-Wei, Wang Reviewed-by: Ryan Chen

include/configs: aspeed: Remove hardcoded variables

2020-08-14T13:46:40Z

The hardcoded platform variables such as DRAM base address are not common to Aspeed SoCs AST24xx/AST25xx/AST26xx. This patch replaces those hardcoded with macros defined in a newly added header, where the basic SoC HW information are assigned accordingly. Signed-off-by: Chia-Wei, Wang