Hi,
I am facing some issues porting u-boot to a MPC8536 custom board. My custom board doesn't implement SPD EEPROM to configure ddr, so I must setup ddr manually.
I am starting from MPC8536ds target. This board uses a SPD EEPROM to configure the ddr controler. So, I undefined CONFIG_SPD_EEPROM and I am trying setup ddr manually.
My u-boot freeze at relocation code. Usually this is result of a ddr bad configuration. But, I was reading code from other targets like MPC8540ads and I noted that when I undefine CONFIG_SPD_EEPROM some code is enabled to configure law registers and tlb for ddr. For exemple:
board/freescale/mpc8540ads/law.c #ifndef CONFIG_SPD_EEPROM SET_LAW(CONFIG_SYS_DDR_SDRAM_BASE, LAW_SIZE_128M, LAW_TRGT_IF_DDR), #endif
The same happens at board/freescale/mpc8540ads/tlb.c.
I was expecting find a similar code for MPC8536ds target. But it doesn't configure law and tbl for ddr when CONFIG_SPD_EEPROM is disabled.
My question is why this happens to the MPC8536ds target? I suppose I must configure law and tbl entries in a similar way like MPC8540ads.
Regards,
Carlos R. Moratelli