X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=blobdiff_plain;f=README;h=d8fcd95f9423a877edb04bafa4e34249f29017b2;hp=4715cfbc2543af61ee3dc268ee3e1760eb68a394;hb=c9afa7cea84c9b7346fcd2710577bcc386631aba;hpb=fb4a2409b46c98672557bb07dec8e873bef1e23c diff --git a/README b/README index 4715cfbc25..d8fcd95f94 100644 --- a/README +++ b/README @@ -132,6 +132,10 @@ Directory Hierarchy: ==================== /arch Architecture specific files + /arc Files generic to ARC architecture + /cpu CPU specific files + /arc700 Files specific to ARC 700 CPUs + /lib Architecture specific library files /arm Files generic to ARM architecture /cpu CPU specific files /arm720t Files specific to ARM 720 CPUs @@ -164,7 +168,7 @@ Directory Hierarchy: /mips Files generic to MIPS architecture /cpu CPU specific files /mips32 Files specific to MIPS32 CPUs - /xburst Files specific to Ingenic XBurst CPUs + /mips64 Files specific to MIPS64 CPUs /lib Architecture specific library files /nds32 Files generic to NDS32 architecture /cpu CPU specific files @@ -260,6 +264,17 @@ e.g. "make cogent_mpc8xx_config". And also configure the cogent directory according to the instructions in cogent/README. +Sandbox Environment: +-------------------- + +U-Boot can be built natively to run on a Linux host using the 'sandbox' +board. This allows feature development which is not board- or architecture- +specific to be undertaken on a native platform. The sandbox is also used to +run some of U-Boot's tests. + +See board/sandbox/sandbox/README.sandbox for more details. + + Configuration Options: ---------------------- @@ -431,7 +446,17 @@ The following options need to be configured: This CONFIG is defined when the CPC is configured as SRAM at the time of U-boot entry and is required to be re-initialized. + CONFIG_DEEP_SLEEP + Inidcates this SoC supports deep sleep feature. If deep sleep is + supported, core will start to execute uboot when wakes up. + - Generic CPU options: + CONFIG_SYS_GENERIC_GLOBAL_DATA + Defines global data is initialized in generic board board_init_f(). + If this macro is defined, global data is created and cleared in + generic board board_init_f(). Without this macro, architecture/board + should initialize global data before calling board_init_f(). + CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN Defines the endianess of the CPU. Implementation of those @@ -458,6 +483,9 @@ The following options need to be configured: CONFIG_SYS_FSL_DDRC_GEN3 Freescale DDR3 controller. + CONFIG_SYS_FSL_DDRC_GEN4 + Freescale DDR4 controller. + CONFIG_SYS_FSL_DDRC_ARM_GEN3 Freescale DDR3 controller for ARM-based SoCs. @@ -473,7 +501,15 @@ The following options need to be configured: CONFIG_SYS_FSL_DDR3 Board config to use DDR3. It can be enabled for SoCs with - Freescale DDR3 controllers. + Freescale DDR3 or DDR3L controllers. + + CONFIG_SYS_FSL_DDR3L + Board config to use DDR3L. It can be enabled for SoCs with + DDR3L controllers. + + CONFIG_SYS_FSL_DDR4 + Board config to use DDR4. It can be enabled for SoCs with + DDR4 controllers. CONFIG_SYS_FSL_IFC_BE Defines the IFC controller register space as Big Endian @@ -490,6 +526,10 @@ The following options need to be configured: PBI commands can be used to configure SoC before it starts the execution. Please refer doc/README.pblimage for more details + CONFIG_SPL_FSL_PBL + It adds a target to create boot binary having SPL binary in PBI format + concatenated with u-boot binary. + CONFIG_SYS_FSL_DDR_BE Defines the DDR controller register space as Big Endian @@ -717,6 +757,10 @@ The following options need to be configured: boot loader that has already initialized the UART. Define this variable to flush the UART at init time. + CONFIG_SERIAL_HW_FLOW_CONTROL + + Define this variable to enable hw flow control in serial driver. + Current user of this option is drivers/serial/nsl16550.c driver - Console Interface: Depending on board, define exactly one serial port @@ -1461,13 +1505,6 @@ The following options need to be configured: for your device - CONFIG_USBD_PRODUCTID 0xFFFF - Some USB device drivers may need to check USB cable attachment. - In this case you can enable following config in BoardName.h: - CONFIG_USB_CABLE_CHECK - This enables function definition: - - usb_cable_connected() in include/usb.h - Implementation of this function is board-specific. - - ULPI Layer Support: The ULPI (UTMI Low Pin (count) Interface) PHYs are supported via the generic ULPI layer. The generic layer accesses the ULPI PHY @@ -1542,6 +1579,28 @@ The following options need to be configured: entering dfuMANIFEST state. Host waits this timeout, before sending again an USB request to the device. +- USB Device Android Fastboot support: + CONFIG_CMD_FASTBOOT + This enables the command "fastboot" which enables the Android + fastboot mode for the platform's USB device. Fastboot is a USB + protocol for downloading images, flashing and device control + used on Android devices. + See doc/README.android-fastboot for more information. + + CONFIG_ANDROID_BOOT_IMAGE + This enables support for booting images which use the Android + image format header. + + CONFIG_USB_FASTBOOT_BUF_ADDR + The fastboot protocol requires a large memory buffer for + downloads. Define this to the starting RAM address to use for + downloaded images. + + CONFIG_USB_FASTBOOT_BUF_SIZE + The fastboot protocol requires a large memory buffer for + downloads. This buffer should be as large as possible for a + platform. Define this to the size available RAM for fastboot. + - Journaling Flash filesystem support: CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE, CONFIG_JFFS2_NAND_DEV @@ -3259,6 +3318,10 @@ FIT uImage format: supports MMC, NAND and YMODEM loading of U-Boot and NAND NAND loading of the Linux Kernel. + CONFIG_SPL_OS_BOOT + Enable booting directly to an OS from SPL. + See also: doc/README.falcon + CONFIG_SPL_DISPLAY_PRINT For ARM, enable an optional function to print more information about the running system. @@ -3317,6 +3380,9 @@ FIT uImage format: continuing (the hardware starts execution after just loading the first page rather than the full 4K). + CONFIG_SPL_SKIP_RELOCATE + Avoid SPL relocation + CONFIG_SPL_NAND_BASE Include nand_base.c in the SPL. Requires CONFIG_SPL_NAND_DRIVERS. @@ -3331,6 +3397,10 @@ FIT uImage format: Support for NAND boot using simple NAND drivers that expose the cmd_ctrl() interface. + CONFIG_SPL_MTD_SUPPORT + Support for the MTD subsystem within SPL. Useful for + environment on NAND support within SPL. + CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT Set for the SPL on PPC mpc8xxx targets, support for drivers/ddr/fsl/libddr.o in SPL binary. @@ -4493,6 +4563,11 @@ Low Level (hardware related) configuration options: - CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC: Enables the RTC32K OSC on AM33xx based plattforms +- CONFIG_SYS_NAND_NO_SUBPAGE_WRITE + Option to disable subpage write in NAND driver + driver that uses this: + drivers/mtd/nand/davinci_nand.c + Freescale QE/FMAN Firmware Support: ----------------------------------- @@ -4502,8 +4577,13 @@ This firmware often needs to be loaded during U-Boot booting, so macros are used to identify the storage device (NOR flash, SPI, etc) and the address within that device. -- CONFIG_SYS_QE_FMAN_FW_ADDR - The address in the storage device where the firmware is located. The +- CONFIG_SYS_FMAN_FW_ADDR + The address in the storage device where the FMAN microcode is located. The + meaning of this address depends on which CONFIG_SYS_QE_FW_IN_xxx macro + is also specified. + +- CONFIG_SYS_QE_FW_ADDR + The address in the storage device where the QE microcode is located. The meaning of this address depends on which CONFIG_SYS_QE_FW_IN_xxx macro is also specified.