本文是原「蜗窝讨论区」的历史存档（2016-11-02），来自版块「Linux kernel技术问答」，共 12 帖。讨论区已停止服务，此处仅供查阅。

OSer · 2016-11-02 17:25

我这有一块Cubieboard的板子，所以想要自己移植一下u-boot(上流分支以支持cubieboard),学习一下u-boot的架构和工作流程，然后按着X-Project项目的入门介绍，然后开始的移植。我所做的工作已经都提交到了我的github上了，https://github.com/OSer916/u-boot 对应的分支是cubieboard

下面的内容是 git diff master cubieboard 的输出：


[== Undefined ==]
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index d7a9b11..298da70 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -873,6 +873,11 @@ config TARGET_THUNDERX_88XX
    select OF_CONTROL
    select SYS_CACHE_SHIFT_7
+config TARGET_SUNNY

bool "Support Sunny board"
select CPU_V7



endchoice
source "arch/arm/mach-at91/Kconfig"
@@ -935,6 +940,7 @@ source "arch/arm/cpu/armv8/Kconfig"
source "arch/arm/imx-common/Kconfig"



source "board/bosch/shc/Kconfig"
source "board/BuR/brxre1/Kconfig"
source "board/BuR/brppt1/Kconfig"
@@ -1021,6 +1027,7 @@ source "board/woodburn/Kconfig"
source "board/work-microwave/work_92105/Kconfig"
source "board/zipitz2/Kconfig"
+source "board/sunny/Kconfig"
source "arch/arm/Kconfig.debug"
endmenu
diff –git a/arch/arm/Makefile b/arch/arm/Makefile
index 42093c2..f0bf884 100644
— a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -65,6 +65,7 @@ machine-$(CONFIG_ARCH_MVEBU)      += mvebu
machine-$(CONFIG_ORION5X)      += orion5x
machine-$(CONFIG_ARCH_S5PC1XX)     += s5pc1xx
machine-$(CONFIG_ARCH_SUNXI)       += sunxi
+machine-$(CONFIG_SUNNY)            += sunny
machine-$(CONFIG_ARCH_SNAPDRAGON)  += snapdragon
machine-$(CONFIG_ARCH_SOCFPGA)     += socfpga
machine-$(CONFIG_ARCH_RMOBILE)     += rmobile
diff –git a/arch/arm/cpu/armv7/Makefile b/arch/arm/cpu/armv7/Makefile
index 4d3bc94..6f4329c 100644
— a/arch/arm/cpu/armv7/Makefile
+++ b/arch/arm/cpu/armv7/Makefile
@@ -12,7 +12,7 @@ obj-y += cache_v7.o cache_v7_asm.o
obj-y  += cpu.o cp15.o
obj-y  += syslib.o
-ifneq ($(CONFIG_AM43XX)$(CONFIG_AM33XX)$(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX)$(CONFIG_TEGRA)$(CONFIG_MX6)$(CONFIG_MX7)$(CONFIG_TI81XX)$(CONFIG_AT91FAMILY)$(CONFIG_ARCH_SUNXI)$(CONFIG_ARCH_SOCFPGA)$(CONFIG_LS102XA),)
+ifneq ($(CONFIG_SUNNY)$(CONFIG_AM43XX)$(CONFIG_AM33XX)$(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX)$(CONFIG_TEGRA)$(CONFIG_MX6)$(CONFIG_MX7)$(CONFIG_TI81XX)$(CONFIG_AT91FAMILY)$(CONFIG_ARCH_SUNXI)$(CONFIG_ARCH_SOCFPGA)$(CONFIG_LS102XA),)
ifneq ($(CONFIG_SKIP_LOWLEVEL_INIT),y)
obj-y  += lowlevel_init.o
endif
@@ -45,4 +45,5 @@ obj-$(CONFIG_OMAP54XX) += omap5/
obj-$(CONFIG_RMOBILE) += rmobile/
obj-$(if $(filter stv0991,$(SOC)),y) += stv0991/
obj-$(CONFIG_ARCH_SUNXI) += sunxi/
+obj-$(CONFIG_SUNNY) += sunny/
obj-$(CONFIG_VF610) += vf610/
diff –git a/arch/arm/cpu/armv7/sunny/Makefile b/arch/arm/cpu/armv7/sunny/Makefile
new file mode 100644
index 0000000..62c0dad
— /dev/null
+++ b/arch/arm/cpu/armv7/sunny/Makefile
@@ -0,0 +1,2 @@
+#
+obj-y += start.o
diff –git a/arch/arm/cpu/armv7/sunny/start.c b/arch/arm/cpu/armv7/sunny/start.c
new file mode 100644
index 0000000..8337712
— /dev/null
+++ b/arch/arm/cpu/armv7/sunny/start.c
@@ -0,0 +1 @@
+//
diff –git a/arch/arm/mach-sunny/Makefile b/arch/arm/mach-sunny/Makefile
new file mode 100644
index 0000000..8ad9650
— /dev/null
+++ b/arch/arm/mach-sunny/Makefile
@@ -0,0 +1,3 @@
+
+obj-y += board.o
+
diff –git a/arch/arm/mach-sunny/board.c b/arch/arm/mach-sunny/board.c
new file mode 100644
index 0000000..17f9c99
— /dev/null
+++ b/arch/arm/mach-sunny/board.c
@@ -0,0 +1,3 @@
+void s_init(void)
+{
+}
diff –git a/board/sunny/Kconfig b/board/sunny/Kconfig
new file mode 100644
index 0000000..65e80c4
— /dev/null
+++ b/board/sunny/Kconfig
@@ -0,0 +1,39 @@
+
+config ARCH_SUNNY

bool
default y
+config SYS_CPU
default "armv7"
+config SYS_SOC
default "sunny"
+config SYS_BOARD
default "sunny"


+config SYS_CONFIG_NAME

default "sunny"


+config NR_DRAM_BANKS

int "DRAM bank number"
default 1


+config SYS_MAXARGS

int "max arguments"
default 16


+config ENV_IS_NOWHERE

bool "where is the envs"
default y


+config BAUDRATE

int "serail port baudrate"
default 115200


+config SYS_CBSIZE

int "Console I/O buffer size"
default 1024


+config CONS_INDEX

int "console index"
default 1



diff –git a/board/sunny/Makefile b/board/sunny/Makefile
new file mode 100644
index 0000000..933f5d0
— /dev/null
+++ b/board/sunny/Makefile
@@ -0,0 +1,2 @@
+
+obj-y += board.o
diff –git a/board/sunny/board.c b/board/sunny/board.c
new file mode 100644
index 0000000..2717fe2
— /dev/null
+++ b/board/sunny/board.c
@@ -0,0 +1,27 @@
+#include <common.h>
+void reset_cpu(ulong addr)
+{
+}
+
+//void lowlevel_init(void)
+////{
+//}
+int board_run_command(const char *buf)
+{

return 0;
+}


+int  dram_init(void)
+{

return 0;
+}


+int  board_init(void)
+{

return 0;
+}


+ulong get_tbclk(void)
+{

return 0;
+}
diff –git a/configs/sunny_defconfig b/configs/sunny_defconfig
new file mode 100644
index 0000000..7bc77ca
— /dev/null
+++ b/configs/sunny_defconfig
@@ -0,0 +1,593 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# U-Boot 2016.11-rc2 Configuration
+#
+CONFIG_CREATE_ARCH_SYMLINK=y
+# CONFIG_ARC is not set
+CONFIG_ARM=y
+# CONFIG_AVR32 is not set
+# CONFIG_BLACKFIN is not set
+# CONFIG_M68K is not set
+# CONFIG_MICROBLAZE is not set
+# CONFIG_MIPS is not set
+# CONFIG_NDS32 is not set
+# CONFIG_NIOS2 is not set
+# CONFIG_OPENRISC is not set
+# CONFIG_PPC is not set
+# CONFIG_SANDBOX is not set
+# CONFIG_SH is not set
+# CONFIG_SPARC is not set
+# CONFIG_X86 is not set
+# CONFIG_XTENSA is not set
+CONFIG_SYS_ARCH="arm"
+CONFIG_SYS_CPU="armv7"
+CONFIG_SYS_SOC="sunny"
+CONFIG_SYS_BOARD="sunny"
+CONFIG_SYS_CONFIG_NAME="sunny"


+#
+# ARM architecture
+#
+CONFIG_HAS_VBAR=y
+CONFIG_HAS_THUMB2=y
+CONFIG_CPU_V7=y
+CONFIG_SYS_ARM_ARCH=7
+CONFIG_SYS_CACHE_SHIFT_6=y
+CONFIG_SYS_CACHELINE_SIZE=64
+# CONFIG_SEMIHOSTING is not set
+# CONFIG_SYS_L2CACHE_OFF is not set
+# CONFIG_ENABLE_ARM_SOC_BOOT0_HOOK is not set
+# CONFIG_ARCH_AT91 is not set
+# CONFIG_TARGET_EDB93XX is not set
+# CONFIG_TARGET_VCMA9 is not set
+# CONFIG_TARGET_SMDK2410 is not set
+# CONFIG_TARGET_ASPENITE is not set
+# CONFIG_TARGET_GPLUGD is not set
+# CONFIG_ARCH_DAVINCI is not set
+# CONFIG_KIRKWOOD is not set
+# CONFIG_ARCH_MVEBU is not set
+# CONFIG_TARGET_DEVKIT3250 is not set
+# CONFIG_TARGET_WORK_92105 is not set
+# CONFIG_TARGET_MX25PDK is not set
+# CONFIG_TARGET_ZMX25 is not set
+# CONFIG_TARGET_APF27 is not set
+# CONFIG_TARGET_APX4DEVKIT is not set
+# CONFIG_TARGET_XFI3 is not set
+# CONFIG_TARGET_M28EVK is not set
+# CONFIG_TARGET_MX23EVK is not set
+# CONFIG_TARGET_MX28EVK is not set
+# CONFIG_TARGET_MX23_OLINUXINO is not set
+# CONFIG_TARGET_BG0900 is not set
+# CONFIG_TARGET_SANSA_FUZE_PLUS is not set
+# CONFIG_TARGET_SC_SPS_1 is not set
+# CONFIG_ORION5X is not set
+# CONFIG_TARGET_SPEAR300 is not set
+# CONFIG_TARGET_SPEAR310 is not set
+# CONFIG_TARGET_SPEAR320 is not set
+# CONFIG_TARGET_SPEAR600 is not set
+# CONFIG_TARGET_STV0991 is not set
+CONFIG_TARGET_SUNNY=y
+# CONFIG_TARGET_X600 is not set
+# CONFIG_TARGET_IMX31_PHYCORE is not set
+# CONFIG_TARGET_MX31ADS is not set
+# CONFIG_TARGET_MX31PDK is not set
+# CONFIG_TARGET_WOODBURN is not set
+# CONFIG_TARGET_WOODBURN_SD is not set
+# CONFIG_TARGET_FLEA3 is not set
+# CONFIG_TARGET_MX35PDK is not set
+# CONFIG_ARCH_BCM283X is not set
+# CONFIG_TARGET_VEXPRESS_CA15_TC2 is not set
+# CONFIG_TARGET_VEXPRESS_CA5X2 is not set
+# CONFIG_TARGET_VEXPRESS_CA9X4 is not set
+# CONFIG_TARGET_BRXRE1 is not set
+# CONFIG_TARGET_BRPPT1 is not set
+# CONFIG_TARGET_DRACO is not set
+# CONFIG_TARGET_THUBAN is not set
+# CONFIG_TARGET_RASTABAN is not set
+# CONFIG_TARGET_ETAMIN is not set
+# CONFIG_TARGET_PXM2 is not set
+# CONFIG_TARGET_RUT is not set
+# CONFIG_TARGET_TI814X_EVM is not set
+# CONFIG_TARGET_TI816X_EVM is not set
+# CONFIG_TARGET_BCM23550_W1D is not set
+# CONFIG_TARGET_BCM28155_AP is not set
+# CONFIG_TARGET_BCMCYGNUS is not set
+# CONFIG_TARGET_BCMNSP is not set
+# CONFIG_ARCH_EXYNOS is not set
+# CONFIG_ARCH_S5PC1XX is not set
+# CONFIG_ARCH_HIGHBANK is not set
+# CONFIG_ARCH_INTEGRATOR is not set
+# CONFIG_ARCH_KEYSTONE is not set
+# CONFIG_ARCH_MESON is not set
+# CONFIG_ARCH_MX7 is not set
+# CONFIG_ARCH_MX6 is not set
+# CONFIG_ARCH_MX5 is not set
+# CONFIG_TARGET_M53EVK is not set
+# CONFIG_TARGET_MX51EVK is not set
+# CONFIG_TARGET_MX53ARD is not set
+# CONFIG_TARGET_MX53EVK is not set
+# CONFIG_TARGET_MX53LOCO is not set
+# CONFIG_TARGET_MX53SMD is not set
+# CONFIG_OMAP34XX is not set
+# CONFIG_OMAP44XX is not set
+# CONFIG_OMAP54XX is not set
+# CONFIG_AM43XX is not set
+# CONFIG_AM33XX is not set
+# CONFIG_ARCH_RMOBILE is not set
+# CONFIG_TARGET_S32V234EVB is not set
+# CONFIG_ARCH_SNAPDRAGON is not set
+# CONFIG_ARCH_SOCFPGA is not set
+# CONFIG_TARGET_CM_T43 is not set
+# CONFIG_ARCH_SUNXI is not set
+# CONFIG_TARGET_TS4800 is not set
+# CONFIG_TARGET_VF610TWR is not set
+# CONFIG_TARGET_COLIBRI_VF is not set
+# CONFIG_TARGET_PCM052 is not set
+# CONFIG_TARGET_BK4R1 is not set
+# CONFIG_ARCH_ZYNQ is not set
+# CONFIG_ARCH_ZYNQMP is not set
+# CONFIG_TEGRA is not set
+# CONFIG_TARGET_VEXPRESS64_AEMV8A is not set
+# CONFIG_TARGET_VEXPRESS64_BASE_FVP is not set
+# CONFIG_TARGET_VEXPRESS64_BASE_FVP_DRAM is not set
+# CONFIG_TARGET_VEXPRESS64_JUNO is not set
+# CONFIG_TARGET_LS2080A_EMU is not set
+# CONFIG_TARGET_LS2080A_SIMU is not set
+# CONFIG_TARGET_LS2080AQDS is not set
+# CONFIG_TARGET_LS2080ARDB is not set
+# CONFIG_TARGET_HIKEY is not set
+# CONFIG_TARGET_LS1012AQDS is not set
+# CONFIG_TARGET_LS1012ARDB is not set
+# CONFIG_TARGET_LS1012AFRDM is not set
+# CONFIG_TARGET_LS1021AQDS is not set
+# CONFIG_TARGET_LS1021ATWR is not set
+# CONFIG_TARGET_LS1043AQDS is not set
+# CONFIG_TARGET_LS1043ARDB is not set
+# CONFIG_TARGET_LS1046AQDS is not set
+# CONFIG_TARGET_LS1046ARDB is not set
+# CONFIG_TARGET_H2200 is not set
+# CONFIG_TARGET_ZIPITZ2 is not set
+# CONFIG_TARGET_COLIBRI_PXA270 is not set
+# CONFIG_ARCH_UNIPHIER is not set
+# CONFIG_STM32 is not set
+# CONFIG_ARCH_ROCKCHIP is not set
+# CONFIG_TARGET_THUNDERX_88XX is not set
+# CONFIG_ARMV7_LPAE is not set
+CONFIG_IDENT_STRING=""
+# CONFIG_PRE_CONSOLE_BUFFER is not set
+# CONFIG_VIDEO is not set
+
+#
+# ARM debug
+#
+# CONFIG_DEBUG_LL is not set
+
+#
+# General setup
+#
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+# CONFIG_DISTRO_DEFAULTS is not set
+# CONFIG_SYS_MALLOC_F is not set
+CONFIG_EXPERT=y
+CONFIG_SYS_MALLOC_CLEAR_ON_INIT=y
+# CONFIG_TOOLS_DEBUG is not set
+# CONFIG_PHYS_64BIT is not set
+
+#
+# Boot images
+#
+# CONFIG_FIT is not set
+CONFIG_SYS_EXTRA_OPTIONS=""
+CONFIG_ARCH_FIXUP_FDT=y
+
+#
+# Boot timing
+#
+# CONFIG_BOOTSTAGE is not set
+CONFIG_BOOTSTAGE_USER_COUNT=20
+CONFIG_BOOTSTAGE_STASH_ADDR=0
+CONFIG_BOOTSTAGE_STASH_SIZE=4096
+
+#
+# Boot media
+#
+# CONFIG_NAND_BOOT is not set
+# CONFIG_ONENAND_BOOT is not set
+# CONFIG_QSPI_BOOT is not set
+# CONFIG_SATA_BOOT is not set
+# CONFIG_SD_BOOT is not set
+# CONFIG_SPI_BOOT is not set
+CONFIG_BOOTDELAY=2
+
+#
+# Console
+#
+# CONFIG_CONSOLE_RECORD is not set
+# CONFIG_SILENT_CONSOLE is not set
+# CONFIG_CONSOLE_MUX is not set
+# CONFIG_SYS_CONSOLE_IS_IN_ENV is not set
+# CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE is not set
+# CONFIG_SYS_CONSOLE_ENV_OVERWRITE is not set
+# CONFIG_SYS_CONSOLE_INFO_QUIET is not set
+# CONFIG_SYS_STDIO_DEREGISTER is not set
+CONFIG_DEFAULT_FDT_FILE=""
+# CONFIG_SYS_NO_FLASH is not set
+# CONFIG_VERSION_VARIABLE is not set
+# CONFIG_DISPLAY_CPUINFO is not set
+# CONFIG_DISPLAY_BOARDINFO is not set
+
+#
+# SPL / TPL
+#
+
+#
+# Command line interface
+#
+# CONFIG_CMDLINE is not set
+CONFIG_SYS_PROMPT="=> "
+
+#
+# Autoboot options
+#
+CONFIG_AUTOBOOT=y
+# CONFIG_AUTOBOOT_KEYED is not set
+
+#
+# FASTBOOT
+#
+# CONFIG_FASTBOOT is not set
+
+#
+# Commands
+#
+
+#
+# Info commands
+#
+# CONFIG_CMD_BDI is not set
+# CONFIG_CMD_CONSOLE is not set
+# CONFIG_CMD_CPU is not set
+# CONFIG_CMD_LICENSE is not set
+
+#
+# Boot commands
+#
+# CONFIG_CMD_BOOTD is not set
+# CONFIG_CMD_BOOTM is not set
+# CONFIG_CMD_BOOTZ is not set
+# CONFIG_CMD_ELF is not set
+# CONFIG_CMD_GO is not set
+# CONFIG_CMD_RUN is not set
+# CONFIG_CMD_IMI is not set
+# CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_XIMG is not set
+
+#
+# Environment commands
+#
+# CONFIG_CMD_ASKENV is not set
+# CONFIG_CMD_EXPORTENV is not set
+# CONFIG_CMD_IMPORTENV is not set
+# CONFIG_CMD_EDITENV is not set
+# CONFIG_CMD_GREPENV is not set
+# CONFIG_CMD_SAVEENV is not set
+# CONFIG_CMD_ENV_EXISTS is not set
+
+#
+# Memory commands
+#
+# CONFIG_CMD_MEMORY is not set
+# CONFIG_CMD_CRC32 is not set
+# CONFIG_LOOPW is not set
+# CONFIG_CMD_MEMTEST is not set
+# CONFIG_CMD_MX_CYCLIC is not set
+# CONFIG_CMD_MEMINFO is not set
+
+#
+# Device access commands
+#
+# CONFIG_CMD_LOADB is not set
+# CONFIG_CMD_LOADS is not set
+# CONFIG_CMD_FLASH is not set
+# CONFIG_CMD_ARMFLASH is not set
+# CONFIG_CMD_MMC is not set
+# CONFIG_CMD_NAND is not set
+# CONFIG_CMD_SF is not set
+# CONFIG_CMD_SPI is not set
+# CONFIG_CMD_I2C is not set
+# CONFIG_CMD_USB is not set
+# CONFIG_CMD_DFU is not set
+# CONFIG_CMD_USB_MASS_STORAGE is not set
+# CONFIG_CMD_FPGA is not set
+# CONFIG_CMD_GPIO is not set
+
+#
+# Shell scripting commands
+#
+# CONFIG_CMD_ECHO is not set
+# CONFIG_CMD_ITEST is not set
+# CONFIG_CMD_SOURCE is not set
+# CONFIG_CMD_SETEXPR is not set
+
+#
+# Network commands
+#
+# CONFIG_CMD_NET is not set
+# CONFIG_CMD_TFTPPUT is not set
+# CONFIG_CMD_TFTPSRV is not set
+# CONFIG_CMD_RARP is not set
+# CONFIG_CMD_DHCP is not set
+# CONFIG_CMD_NFS is not set
+# CONFIG_CMD_MII is not set
+# CONFIG_CMD_PING is not set
+# CONFIG_CMD_CDP is not set
+# CONFIG_CMD_SNTP is not set
+# CONFIG_CMD_DNS is not set
+# CONFIG_CMD_LINK_LOCAL is not set
+
+#
+# Misc commands
+#
+# CONFIG_CMD_CACHE is not set
+# CONFIG_CMD_TIME is not set
+# CONFIG_CMD_MISC is not set
+# CONFIG_CMD_TIMER is not set
+# CONFIG_CMD_QFW is not set
+
+#
+# Power commands
+#
+
+#
+# Security commands
+#
+
+#
+# Firmware commands
+#
+
+#
+# Filesystem commands
+#
+# CONFIG_CMD_EXT2 is not set
+# CONFIG_CMD_EXT4 is not set
+# CONFIG_CMD_FAT is not set
+# CONFIG_CMD_FS_GENERIC is not set
+# CONFIG_CMD_UBI is not set
+CONFIG_SUPPORT_OF_CONTROL=y
+
+#
+# Device Tree Control
+#
+# CONFIG_OF_CONTROL is not set
+CONFIG_NET=y
+# CONFIG_NET_RANDOM_ETHADDR is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NET_TFTP_VARS is not set
+CONFIG_BOOTP_PXE_CLIENTARCH=0x15
+CONFIG_BOOTP_VCI_STRING="U-Boot.armv7"
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+# CONFIG_DM is not set
+# CONFIG_ADC is not set
+# CONFIG_ADC_EXYNOS is not set
+# CONFIG_ADC_SANDBOX is not set
+# CONFIG_BLOCK_CACHE is not set
+
+#
+# Clock
+#
+# CONFIG_CPU is not set
+
+#
+# Hardware crypto devices
+#
+# CONFIG_FSL_CAAM is not set
+
+#
+# Demo for driver model
+#
+
+#
+# DFU support
+#
+
+#
+# DMA Support
+#
+# CONFIG_TI_EDMA3 is not set
+
+#
+# FPGA support
+#
+# CONFIG_FPGA_XILINX is not set
+
+#
+# GPIO Support
+#
+
+#
+# I2C support
+#
+# CONFIG_SYS_I2C_DW is not set
+# CONFIG_CROS_EC_KEYB is not set
+
+#
+# LED Support
+#
+
+#
+# Mailbox Controller Support
+#
+
+#
+# Memory Controller drivers
+#
+
+#
+# Multifunction device drivers
+#
+# CONFIG_CROS_EC is not set
+# CONFIG_FSL_SEC_MON is not set
+# CONFIG_MXC_OCOTP is not set
+# CONFIG_NUVOTON_NCT6102D is not set
+# CONFIG_PCA9551_LED is not set
+# CONFIG_WINBOND_W83627 is not set
+
+#
+# MMC Host controller Support
+#
+
+#
+# MTD Support
+#
+
+#
+# NAND Device Support
+#
+# CONFIG_NAND_DENALI is not set
+# CONFIG_NAND_VF610_NFC is not set
+# CONFIG_NAND_PXA3XX is not set
+# CONFIG_NAND_ARASAN is not set
+
+#
+# Generic NAND options
+#
+
+#
+# SPI Flash Support
+#
+# CONFIG_SPI_FLASH is not set
+
+#
+# UBI support
+#
+# CONFIG_MTD_UBI is not set
+# CONFIG_PHYLIB is not set
+# CONFIG_NETDEVICES is not set
+# CONFIG_PCI is not set
+# CONFIG_MVEBU_COMPHY_SUPPORT is not set
+
+#
+# Pin controllers
+#
+
+#
+# Power
+#
+
+#
+# Power Domain Support
+#
+
+#
+# Remote Processor drivers
+#
+
+#
+# Reset Controller Support
+#
+
+#
+# Real Time Clock
+#
+
+#
+# Serial drivers
+#
+# CONFIG_DEBUG_UART is not set
+# CONFIG_DEBUG_UART_SKIP_INIT is not set
+# CONFIG_ATMEL_USART is not set
+# CONFIG_FSL_LPUART is not set
+# CONFIG_MVEBU_A3700_UART is not set
+# CONFIG_SYS_NS16550 is not set
+
+#
+# Sound support
+#
+# CONFIG_SOUND is not set
+
+#
+# SPI Support
+#
+# CONFIG_FSL_ESPI is not set
+# CONFIG_FSL_QSPI is not set
+# CONFIG_TI_QSPI is not set
+
+#
+# SPMI support
+#
+
+#
+# System reset device drivers
+#
+# CONFIG_DM_THERMAL is not set
+
+#
+# Timer Support
+#
+
+#
+# TPM support
+#
+# CONFIG_USB is not set
+
+#
+# Graphics support
+#
+
+#
+# TrueType Fonts
+#
+# CONFIG_VIDEO_VESA is not set
+# CONFIG_VIDEO_LCD_ANX9804 is not set
+# CONFIG_VIDEO_LCD_SSD2828 is not set
+# CONFIG_VIDEO_MVEBU is not set
+# CONFIG_LCD is not set
+# CONFIG_PHYS_TO_BUS is not set
+
+#
+# File systems
+#
+
+#
+# Library routines
+#
+# CONFIG_CC_OPTIMIZE_LIBS_FOR_SPEED is not set
+CONFIG_HAVE_PRIVATE_LIBGCC=y
+CONFIG_USE_PRIVATE_LIBGCC=y
+CONFIG_SYS_HZ=1000
+# CONFIG_USE_TINY_PRINTF is not set
+CONFIG_REGEX=y
+# CONFIG_LIB_RAND is not set
+# CONFIG_CMD_DHRYSTONE is not set
+# CONFIG_RSA is not set
+
+#
+# Hashing Support
+#
+# CONFIG_SHA1 is not set
+# CONFIG_SHA256 is not set
+# CONFIG_SHA_HW_ACCEL is not set
+
+#
+# Compression Support
+#
+# CONFIG_LZ4 is not set
+# CONFIG_ERRNO_STR is not set
+# CONFIG_OF_LIBFDT is not set
+# CONFIG_OF_LIBFDT_OVERLAY is not set
+# CONFIG_SPL_OF_LIBFDT is not set
+
+#
+# System tables
+#
+# CONFIG_UNIT_TEST is not set
diff –git a/include/configs/sunny.h b/include/configs/sunny.h
new file mode 100644
index 0000000..5a1af26
— /dev/null
+++ b/include/configs/sunny.h
@@ -0,0 +1,29 @@
+#ifndef SUNNY_H
+
+#define SUNNY_H
+
+#define CONFIG_SUNNY
+
+#define CONFIG_ENV_SIZE        (128 << 10)
+#define CONFIG_SYS_MALLOC_LEN  (CONFIG_ENV_SIZE + (64 << 20))
+#define CONFIG_SYS_TEXT_BASE   0x2a000000
+#define CONFIG_SYS_LOAD_ADDR   0x22000000
+#define CONFIG_SYS_NO_FLASH
+
+#define CONFIG_SYS_INIT_RAM_ADDR 0x0
+#define CONFIG_SYS_INIT_RAM_SIZE 0x8000
+#define CONFIG_SYS_INIT_SP_OFFSET  \

(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR        \

  (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
+#define CONFIG_SYS_NS16550
+#define CONFIG_SYS_NS16550_SERIAL
+#define CONFIG_SYS_NS16550_CLK 24000000
+#define CONFIG_SYS_NS16550_REG_SIZE -4
+
+#define SUNXI_UART0_BASE 0x01c28000
+#define CONFIG_SYS_NS16550_COM1 SUNXI_UART0_BASE
+#endif
+

然后我执行make sunny_defconfig 输出正常再执行 make CROSS_COMPILE=arm-linux-gnueabihf-下面是最后的输出结果，在最后链接的时候出现了链接错误

LDS u-boot.lds LD u-boot arm-linux-gnueabihf-ld.bfd: BFD (GNU Binutils) 2.25.0 Linaro 2015_10 assertion fail /home/tcwg-buildslave/workspace/tcwg-make-release/label/tcwg-x86_64-ex40/target/arm-linux-gnueabihf/snapshots/binutils-gdb.git~linaro_binutils-2_25-branch/bfd/elf32-arm.c:7827 arm-linux-gnueabihf-ld.bfd: error: required section '.rel.plt' not found in the linker script arm-linux-gnueabihf-ld.bfd: final link failed: Invalid operation Makefile:1207: recipe for target 'u-boot' failed make: *** Error 1

wowo · 2016-11-03 09:14

应该是编译器版本不对，不知道这个板子为什么用arm-linux-gnueabihf的编译器？版本是多少呢？另外，你可以试试下面的这个： ifeq ($(BOARD_NAME), tiny210)

use arm-linux-gcc-4.8.3 to build uboot and uboot-spl.

COMPILE_URL=https://github.com/ooonebook/arm-none-linux-gnueabi-4.8.git CROSS_COMPILE=$(shell pwd)/arm-none-linux-gnueabi-4.8/bin/arm-none-linux-gnueabi- endif

OSer · 2016-11-03 09:21

不是编译器的问题，我编译make Cubieboard_defconfig && make CROSS_COMPILE=arm-linux-gnueabihf- 就正常

wowo · 2016-11-03 11:47

我看了你的代码，觉得移植的有点问题，因为在你的分支上，make Cubieboard_defconfig && make CROSS_COMPILE=arm-linux-gnueabihf- ，也编译不通过。具体原因我没有细看，我大概对比了一下两个分支的一些内容，发现有一些异常，你可以先看看（例如cub1_conf和cub2_conf的对比，明显CONFIG_ARCH_SUNNY不该出现）：

[== Undefined ==] /* cubieboard 分支 */ pengo@ubuntu:~/work/oser/u-boot$ make CROSS_COMPILE=/home/pengo/work/xprj/build/arm-none-linux-gnueabi-4.8/bin/arm-none-linux-gnueabi- sunny_defconfig > sunny.log pengo@ubuntu:~/work/oser/u-boot$ make CROSS_COMPILE=/home/pengo/work/xprj/build/arm-none-linux-gnueabi-4.8/bin/arm-none-linux-gnueabi- >> sunny.log pengo@ubuntu:/work/oser/u-boot$ make CROSS_COMPILE=/home/pengo/work/xprj/build/arm-none-linux-gnueabi-4.8/bin/arm-none-linux-gnueabi- Cubieboard_defconfig > cub1.log pengo@ubuntu:/work/oser/u-boot$ make CROSS_COMPILE=/home/pengo/work/xprj/build/arm-none-linux-gnueabi-4.8/bin/arm-none-linux-gnueabi- >> cub1.log /* master 分支 */ pengo@ubuntu:/work/oser/u-boot$ make CROSS_COMPILE=/home/pengo/work/xprj/build/arm-none-linux-gnueabi-4.8/bin/arm-none-linux-gnueabi- Cubieboard_defconfig > cub2.log pengo@ubuntu:/work/oser/u-boot$ make CROSS_COMPILE=/home/pengo/work/xprj/build/arm-none-linux-gnueabi-4.8/bin/arm-none-linux-gnueabi- >> cub2.log /* cubieboard 分支 */ pengo@ubuntu:~/work/oser/u-boot$ make CROSS_COMPILE=/home/pengo/work/xprj/build/arm-none-linux-gnueabi-4.8/bin/arm-none-linux-gnueabi- Cubieboard_defconfig configuration written to .config pengo@ubuntu:~/work/oser/u-boot$ cp .config cub1_conf pengo@ubuntu:/work/oser/u-boot$ cp .config cub1_conf pengo@ubuntu:/work/oser/u-boot$ make CROSS_COMPILE=/home/pengo/work/xprj/build/arm-none-linux-gnueabi-4.8/bin/arm-none-linux-gnueabi- sunny_defconfig configuration written to .config pengo@ubuntu:~/work/oser/u-boot$ cp .config sunny_conf /* master 分支 */ pengo@ubuntu:~/work/oser/u-boot$ make CROSS_COMPILE=/home/pengo/work/xprj/build/arm-none-linux-gnueabi-4.8/bin/arm-none-linux-gnueabi- Cubieboard_defconfig configuration written to .config pengo@ubuntu:~/work/oser/u-boot$ cp .config cub2_conf

OSer · 2016-11-03 12:36

在分支cubieboard编译make Cubieboard_defconfig && make CROSS_COMPILE=arm-linux-gnueabihf- 的问题已经解决，但是编译sunny_defconfig还是之前的问题

下面是更改过后的diff：


[== Undefined ==]
oser@OnePiece:~/github/u-boot$ git diff 17cbc0a df3b616
diff --git a/board/sunny/Kconfig b/board/sunny/Kconfig
index 183bbe9..65e80c4 100644
--- a/board/sunny/Kconfig
+++ b/board/sunny/Kconfig
@@ -1,4 +1,3 @@
-if TARGET_SUNNY
config ARCH_SUNNY
bool
@@ -37,4 +36,4 @@ config CONS_INDEX
int "console index"
default 1
-endif
+

wowo · 2016-11-03 18:36

OSer 写道： 在分支cubieboard编译make Cubieboard_defconfig && make CROSS_COMPILE=arm-linux-gnueabihf- 的问题已经解决，但是编译sunny_defconfig还是之前的问题

下面是更改过后的diff：


[== Undefined ==]
oser@OnePiece:~/github/u-boot$ git diff 17cbc0a df3b616
diff --git a/board/sunny/Kconfig b/board/sunny/Kconfig
index 183bbe9..65e80c4 100644
--- a/board/sunny/Kconfig
+++ b/board/sunny/Kconfig
@@ -1,4 +1,3 @@
-if TARGET_SUNNY
config ARCH_SUNNY
bool
@@ -37,4 +36,4 @@ config CONS_INDEX
int "console index"
default 1
-endif
+

今天比较忙，你先稍等，有时间我帮你debug一下。

wowo · 2016-11-05 08:59

昨天试着移植了一下armv7的board，确实有这个问题。根据链接器的错误信息，发现是通过-pie选项，生成位置无关代码的时候，有些*.o不符合要求，可能是少了什么东西。暂时还没有解决。没想到armv7还这么难搞，我会再看看，解决了会写一个armv7的移植指南。有经验的同学也请帮忙提供一下思路。

OSer · 2016-11-05 13:32

麻烦你了，谢谢，共同学习。

wowo · 2016-11-05 22:07

找到原因了，在board/sunny/board.c中，定义下面两个函数：


[== Undefined ==]
ulong get_timer(ulong base)
{
        return 0;
}
void __udelay(unsigned long usec)
{
}

就可以正确编译（把get_tbclk删掉）。不知道为什么直接定义get_tbclk，可以解决编译问题，为什么不能解决链接问题，这真是一个有意思的事情。

wowo · 2016-11-05 22:23

继续查原因……………………………… 把这个函数注释掉：


[== Undefined ==]
#if 0
void __udelay(unsigned long usec)
{
}
#endif

把这个加回来：


[== Undefined ==]
ulong get_tbclk(void)
{
        return 0;
}

编译不通过，范围收窄到__delay中。把lib/time.c中__delay函数的get_ticks接口注释掉，如下：


[== Undefined ==]
void __weak __udelay(unsigned long usec)
{
        uint64_t tmp;
    tmp = /* get_ticks( + */ usec_to_tick(usec);   /* get current timestamp */

    /* while (get_ticks( &lt; tmp+1) */       /* loop till event */
             /*NOP*/;
}

编译通过，范围缩小到get_ticks中。继续查get_ticks，发现这个代码：


[== Undefined ==]
#ifdef CONFIG_SYS_TIMER_COUNTER
unsigned long notrace timer_read_counter(void)
{
#ifdef CONFIG_SYS_TIMER_COUNTS_DOWN
        return ~readl(CONFIG_SYS_TIMER_COUNTER);
#else
        return readl(CONFIG_SYS_TIMER_COUNTER);
#endif
}
#else
extern unsigned long __weak timer_read_counter(void);
#endif

真相终于大白了，我们没有定义CONFIG_SYS_TIMER_COUNTER，也没有实现 timer_read_counter，这里只有一个声明，就造成编译通过，链接不过的问题（说实话这个坑很大啊！！！！！！），最终的解决方法有2： 1. 定义CONFIG_SYS_TIMER_COUNTER。 2. 实现timer_read_counter。

最后吐槽一下，这样的代码：


[== Undefined ==]
extern unsigned long __weak timer_read_counter(void);

简直是狗屎！！既然用__weak了，还extern个屁啊，直接实现一个空函数就行了啊！！

OSer · 2016-11-05 22:38

你好，可以不可以告诉我遇到这样的问题是怎样分析的？

wowo · 2016-11-06 21:07

OSer 写道： 你好，可以不可以告诉我遇到这样的问题是怎样分析的？

其实我也折腾很久，本来一个很简单的问题，按理说应该是一个链接错误，直接指出哪个符号没有，就很容易找。但这里竟是一个奇奇怪怪的错误，看起来应该是-pie选项的原因。至于我是怎么分析的，就是试了很多次之后，慢慢的怀疑是某个符号找不到，然后怀疑到time.c上，一点一点的找出来的。