config RAM bool "Enable RAM drivers using Driver Model" depends on DM help This allows drivers to be provided for SDRAM and other RAM controllers and their type to be specified in the board's device tree. Generally some parameters are required to set up the RAM and the RAM size can either be statically defined or dynamically detected. config SPL_RAM bool "Enable RAM support in SPL" depends on RAM && SPL_DM help The RAM subsystem adds a small amount of overhead to the image. If this is acceptable and you have a need to use RAM drivers in SPL, enable this option. It might provide a cleaner interface to setting up RAM (e.g. SDRAM / DDR) within SPL. config TPL_RAM bool "Enable RAM support in TPL" depends on RAM && TPL help The RAM subsystem adds a small amount of overhead to the image. If this is acceptable and you have a need to use RAM drivers in TPL, enable this option. It might provide a cleaner interface to setting up RAM (e.g. SDRAM / DDR) within TPL. config STM32_SDRAM bool "Enable STM32 SDRAM support" depends on RAM help STM32F7 family devices support flexible memory controller(FMC) to support external memories like sdram, psram & nand. This driver is for the sdram memory interface with the FMC. config MPC83XX_SDRAM bool "Enable MPC83XX SDRAM support" depends on RAM help Enable support for the internal DDR Memory Controller of the MPC83xx family of SoCs. Both static configurations, as well as configuring the RAM through the use of SPD (Serial Presence Detect) is supported via device tree settings. config K3_AM654_DDRSS bool "Enable AM654 DDRSS support" depends on RAM && SOC_K3_AM654 help K3 based AM654 devices has DDR memory subsystem that comprises Synopys DDR controller, Synopsis DDR phy and wrapper logic to intergrate these blocks into the device. This DDR subsystem provides an interface to external SDRAM devices. Enabling this config add support for the initialization of the external SDRAM devices connected to DDR subsystem. config K3_DDRSS bool "Enable K3 DDRSS support" depends on RAM choice depends on K3_DDRSS prompt "K3 DDRSS Arch Support" default K3_J721E_DDRSS if SOC_K3_J721E || SOC_K3_J721S2 || SOC_K3_J784S4 default K3_AM64_DDRSS if SOC_K3_AM642 default K3_AM64_DDRSS if SOC_K3_AM625 default K3_AM62A_DDRSS if SOC_K3_AM62A7 || SOC_K3_AM62P5 config K3_J721E_DDRSS bool "Enable J721E DDRSS support" help The J721E DDR subsystem comprises DDR controller, DDR PHY and wrapper logic to integrate these blocks in the device. The DDR subsystem is used to provide an interface to external SDRAM devices which can be utilized for storing program or data. Enabling this config adds support for the DDR memory controller on J721E family of SoCs. config K3_AM64_DDRSS bool "Enable AM64 DDRSS support" help The AM64 DDR subsystem comprises DDR controller, DDR PHY and wrapper logic to integrate these blocks in the device. The DDR subsystem is used to provide an interface to external SDRAM devices which can be utilized for storing program or data. Enabling this config adds support for the DDR memory controller on AM642 family of SoCs. config K3_AM62A_DDRSS bool "Enable AM62A DDRSS support" help The AM62A DDR subsystem comprises of a DDR controller, DDR PHY and wrapper logic to integrate these blocks into once device. The DDR subsystem is used to provide an interface to external SDRAM devices which can be utilized for storing programs or any other data. Enabling this option adds support for the DDR memory controller for the AM62A family of SoCs. endchoice config IMXRT_SDRAM bool "Enable i.MXRT SDRAM support" depends on RAM help i.MXRT family devices support smart external memory controller(SEMC) to support external memories like sdram, psram & nand. This driver is for the sdram memory interface with the SEMC. source "drivers/ram/aspeed/Kconfig" source "drivers/ram/cadence/Kconfig" source "drivers/ram/octeon/Kconfig" source "drivers/ram/rockchip/Kconfig" source "drivers/ram/sifive/Kconfig" source "drivers/ram/stm32mp1/Kconfig" source "drivers/ram/starfive/Kconfig" source "drivers/ram/sunxi/Kconfig"