u-boot_configuration

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u-boot_configuration [2019/12/26 14:52] – [Files] rpjdayu-boot_configuration [2019/12/27 07:02] (current) – [Files] rpjday
Line 25: Line 25:
 </code> </code>
  
-zynq-related:+zynq[mp]-related:
  
 <code> <code>
Line 69: Line 69:
  
   * ''Makefile''   * ''Makefile''
 +  * ''Kconfig''
   * ''config.mk''   * ''config.mk''
   * ''configs/''   * ''configs/''
Line 95: Line 96:
           * ''Makefile''           * ''Makefile''
           * ''lowlevel_init.S''           * ''lowlevel_init.S''
-      * dts/ +      * ''dts/'' 
-        * zynqmp-zcu102-rev1.0.dts +        * ''zynqmp-zcu102-rev1.0.dts'' 
-  * board/ +  * ''board/'' 
-    * xilinx/ +    * ''xilinx/'' 
-      * Makefile +      * ''Kconfig'' 
-      * common/ +      * ''common/'' 
-        * board.c +        * ''board.c'' 
-      * zynqmp/ +      * ''zynqmp/'' 
-        * Makefile +        * ''Makefile'' 
-        * Kconfig +        * ''Kconfig''
- +
- +
-===== Makefile ===== +
- +
-<code> +
-... +
-export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR +
-... +
-ifeq ($(autoconf_is_old),) +
-include config.mk +
-include arch/$(ARCH)/Makefile +
-endif +
-... +
- +
-</code> +
- +
-===== config.mk ===== +
- +
-<code> +
-ARCH := $(CONFIG_SYS_ARCH:"%"=%) +
-CPU := $(CONFIG_SYS_CPU:"%"=%) +
-ifdef CONFIG_SPL_BUILD +
-ifdef CONFIG_TEGRA +
-CPU := arm720t +
-endif +
-endif +
-BOARD := $(CONFIG_SYS_BOARD:"%"=%) +
-ifneq ($(CONFIG_SYS_VENDOR),) +
-VENDOR := $(CONFIG_SYS_VENDOR:"%"=%) +
-endif +
-ifneq ($(CONFIG_SYS_SOC),) +
-SOC := $(CONFIG_SYS_SOC:"%"=%) +
-endif +
- +
-# Some architecture config.mk files need to know what CPUDIR is set to, +
-# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files. +
-# Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains +
-# CPU-specific code. +
-CPUDIR=arch/$(ARCH)/cpu$(if $(CPU),/$(CPU),) +
- +
-sinclude $(srctree)/arch/$(ARCH)/config.mk      # include architecture dependend rules +
-sinclude $(srctree)/$(CPUDIR)/config.mk         # include  CPU  specific rules +
- +
-ifdef   SOC +
-sinclude $(srctree)/$(CPUDIR)/$(SOC)/config.mk  # include  SoC  specific rules +
-endif +
-ifneq ($(BOARD),) +
-ifdef   VENDOR +
-BOARDDIR = $(VENDOR)/$(BOARD) +
-else +
-BOARDDIR = $(BOARD) +
-endif +
-endif +
-ifdef   BOARD +
-sinclude $(srctree)/board/$(BOARDDIR)/config.mk # include board specific rules +
-endif +
-</code> +
- +
- +
- +
-===== configs/ ===== +
- +
-==== zynq_zed_defconfig ==== +
- +
-<code> +
-CONFIG_ARM=y +
-CONFIG_ARCH_ZYNQ=y +
-... much more ... +
-</code> +
- +
-===== include/ ===== +
- +
-==== configs/ ==== +
- +
-=== zynq-common.h === +
- +
-Consulted from ''arch/arm/mach-zynq/Kconfig''. +
- +
-===== arch/arm/ ===== +
- +
-==== Kconfig ==== +
- +
-<code> +
-config SYS_ARCH +
-        default "arm" +
- +
-... snip ... +
- +
-config ARCH_ZYNQ +
-        bool "Xilinx Zynq based platform" +
-        select BOARD_EARLY_INIT_F if WDT +
-        select CLK +
-        select CLK_ZYNQ +
-        select CPU_V7A +
-        select DM +
-        select DM_ETH if NET +
-        select DM_MMC if MMC +
-        select DM_SERIAL +
-        select DM_SPI +
-        select DM_SPI_FLASH +
-        select DM_USB if USB +
-        select OF_CONTROL +
-        select SPI +
-        select SPL_BOARD_INIT if SPL +
-        select SPL_CLK if SPL +
-        select SPL_DM if SPL +
-        select SPL_OF_CONTROL if SPL +
-        select SPL_SEPARATE_BSS if SPL +
-        select SUPPORT_SPL +
-        imply ARCH_EARLY_INIT_R +
-        imply BOARD_LATE_INIT +
-        imply CMD_CLK +
-        imply CMD_DM +
-        imply CMD_SPL +
-        imply FAT_WRITE +
-         +
-... snip ... +
-</code> +
- +
-==== Makefile ==== +
- +
-<code> +
-machine-$(CONFIG_ARCH_ZYNQ)             += zynq +
-machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y)) +
-head-y := arch/arm/cpu/$(CPU)/start.o +
-... +
-libs-y += arch/arm/cpu/$(CPU)/ +
-libs-y += arch/arm/cpu/ +
-libs-y += arch/arm/lib/ +
-</code> +
-==== mach-zynq/ ==== +
- +
-=== Kconfig === +
- +
-<code> +
-config SYS_BOARD +
-        string "Board name" +
-        default "zynq" +
- +
-config SYS_VENDOR +
-        string "Vendor name" +
-        default "xilinx" +
- +
-config SYS_SOC +
-        default "zynq" +
- +
-config SYS_CONFIG_NAME +
-        string "Board configuration name" +
-        default "zynq-common" +
-        help +
-          This option contains information about board configuration name. +
-          Based on this option include/configs/<CONFIG_SYS_CONFIG_NAME>.h header +
-          will be used for board configuration. +
-</code> +
- +
-===== make cfg ===== +
- +
-In addition to generating the appropriate ''.config'' file, you can go one step further and produce  the subsequent ''u-boot.cfg'' file with: +
- +
-<code> +
-$ make cfg +
-</code> +
- +
-Relevant entries that define the remainder of the build: +
- +
-<code> +
-#define CONFIG_SYS_CPU "armv7" +
-#define CONFIG_SYS_CONFIG_NAME "zynq-common" +
-#define CONFIG_BOARDDIR board/xilinx/zynq +
-#define CONFIG_CPU_V7A 1 +
-#define CONFIG_SYS_VENDOR "xilinx" +
-#define CONFIG_SYS_ARCH "arm" +
-#define CONFIG_SYS_BOARD "zynq" +
-#define CONFIG_SYS_ARM_ARCH 7 +
-#define CONFIG_ARM 1 +
-#define CONFIG_ARCH_ZYNQ 1 +
-</code>+
  • u-boot_configuration.1577371922.txt.gz
  • Last modified: 2019/12/26 14:52
  • by rpjday