本帖最后由 yueyesighhz 于 2014-10-31 11:31 编辑
板子是自己设计的，所以我要去编译一个mfgtool上可以使用的uboot，我的板子是mx53_loco的，与官方的区别就是只有2块DDR，我修改mx53_loco_mfg.h如下：
/*
* MMC Configs
*/
#ifdef CONFIG_CMD_MMC
#define CONFIG_MMC 1
#define CONFIG_GENERIC_MMC
#define CONFIG_IMX_MMC
#define CONFIG_SYS_FSL_ESDHC_NUM 1
#define CONFIG_SYS_FSL_ESDHC_ADDR 0
#define CONFIG_SYS_MMC_ENV_DEV 0
#define CONFIG_DOS_PARTITION 1
#define CONFIG_CMD_FAT 1
#define CONFIG_CMD_EXT2 1
/* detect whether ESDHC1 or ESDHC3 is boot device */
#define CONFIG_DYNAMIC_MMC_DEVNO
#define CONFIG_EMMC_DDR_PORT_DETECT
#define CONFIG_EMMC_DDR_MODE
/* port 1 (ESDHC3) is 8 bit */
#define CONFIG_MMC_8BIT_PORTS 0x2
#endif
/*
* SATA Configs
*/
#ifdef CONFIG_CMD_SATA
#define CONFIG_DWC_AHSATA
#define CONFIG_SYS_SATA_MAX_DEVICE 1
#define CONFIG_DWC_AHSATA_PORT_ID 0
#define CONFIG_DWC_AHSATA_BASE_ADDR SATA_BASE_ADDR
#define CONFIG_LBA48
#define CONFIG_LIBATA
#endif
/*-----------------------------------------------------------------------
* Stack sizes
*
* The stack sizes are set up in start.S using the settings below
*/
#define CONFIG_STACKSIZE (128 * 1024) /* regular stack */
/*-----------------------------------------------------------------------
* Physical Memory Map
*/
#define CONFIG_NR_DRAM_BANKS 1
#define PHYS_SDRAM_1 CSD0_BASE_ADDR
#define PHYS_SDRAM_1_SIZE (256 * 1024 * 1024)
#define PHYS_SDRAM_2 CSD1_BASE_ADDR
#define PHYS_SDRAM_2_SIZE (256 * 1024 * 1024)
#define iomem_valid_addr(addr, size) \
((addr >= PHYS_SDRAM_1 && addr <= (PHYS_SDRAM_1 + PHYS_SDRAM_1_SIZE)))
// || (addr >= PHYS_SDRAM_2 && addr <= (PHYS_SDRAM_2 + PHYS_SDRAM_2_SIZE)))
这里我是根据我的uboot进行的修改，PHYS_SDRAM_2不能注释，会编译出错。但是我烧录的时候还是出现了错误，错误如下
U-Boot 2009.08 (Oct 30 2014 - 20:10:47)
CPU: Freescale i.MX53 family 2.1V at 800 MHz
mx53 pll1: 800MHz
mx53 pll2: 400MHz
mx53 pll3: 432MHz
mx53 pll4: 455MHz
ipg clock : 66666666Hz
ipg per clock : 33333333Hz
uart clock : 66666666Hz
cspi clock : 108000000Hz
ahb clock : 133333333Hz
axi_a clock : 400000000Hz
axi_b clock : 200000000Hz
emi_slow clock: 133333333Hz
ddr clock : 400000000Hz
esdhc1 clock : 80000000Hz
esdhc2 clock : 80000000Hz
esdhc3 clock : 80000000Hz
esdhc4 clock : 80000000Hz
nfc clock : 26666666Hz
Board: MX53-LOCO 1.0 Rev. A
Boot Reason: [POR]
Boot Device: SPI NOR
I2C: ready
DRAM: 256 MB
MMC: FSL_ESDHC: 0
MMC Device 1 not found
No MMC card found
In: serial
Out: serial
Err: serial
Error: Dont't found mc34708 or da9052 on board.
Net: FEC0
MX53-LOCO-MFG U-Boot >
然后就停在了jumping那里，请问我还需要修改哪些地方才能让DDR跑起来。由于是菜鸟，也没有可以询问的人，所以只能来论坛寻求帮助了。
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