[IMX6Q]u-boot_v2009.08移植

u-boot版本： v2009.08

1. 參考一樣平台其他目錄copy一個

$cp -rf board/freescale/mx6_<reference board name> board/freescale/mx6_<custom board name>

2. copy一個平台相關mx6_<custom board name>.h檔案

$cp include/configs/mx6_<referencename>.h  include/configs/mx6_<custom board name>.h

3.在頂層Makefile中添加config

mx6_<custom board name>_config: unconfig

    @$(MKCONFIG) $(@:_config=) arm arm_cortexa8 mx6_<custom board name> freescale mx6

4. 重命名/mx6_<reference board name>.c

$ mv board/freescale/mx6_<reference board name>/mx6_<reference board name>.c

board/freescale/mx6_<custom board name>/mx6_<custom board name>.c.

5. 修改board/freescale/mx6_<customboard name>/u-boot.lds

把

board/freescale/mx6_<reference board name>/flash_header.o

改為

board/freescale/mx6_<custom board name>/flash_header.o

把

board/freescale/mx6_<reference board name>/libmx6_<reference board name>.a

改為

board/freescale/mx6_<custom board name>/libmx6_<custom board name>.a

6. 修改custom目錄下Makefile

修改 board/freescale/mx6_<custom board name >/Makefile

把

board/freescale/mx6_<custom board

改為

COBJS := mx6_<custom board name>.o

7. 修改ddr配置

修改 board/freescale/mx6_<custom board name>/flash_header.S

修改 PHYS_SDRAM_1_SIZE， CONFIG_NR_DRAM_BANKS

8. 修改clock, iomux, gpio

路徑： board/freescale/mx6_<customer_board>/mx6_<customer_board>.c

9. 修改machine type，如果不相容，kernel将無法起來

board_init()@board/freescale/mx6_<customer_board>/mx6_<customer_board>.c

gd->bd->bi_arch_number = MACH_TYPE_MX6_<reference board name>;

machine id 參考：

http://www.arm.linux.org.uk/developer/machines/

10. 編譯

#!/bin/bash

export ARCH=arm

export CROSS_COMPILE=<path to cross compiler prefix>

make distclean

make mx6_<custom board name>_config

make

Refer to: i.MX_6Dual6Quad_BSP_Porting_Guide