Thanks Stenfan for your valuable inputs.
I have implemented the code suggested by you after completing the ddr initialization :
#if defined(CONFIG_DDR_DATA_EYE) /* * Running denali_core_search_data_eye() when ECC is enabled * causes non-ECC machine checks. This clears them. */ print_mcsr(); mtspr(SPRN_MCSR, mfspr(SPRN_MCSR)); print_mcsr(); #endif
before mtspr and after mtspr i am getting the same prints i.e EE,ME,CE disabled.
I am further debugging the same issue.
On Thu, Jan 14, 2010 at 3:54 PM, Stefan Roese sr@denx.de wrote:
On Thursday 14 January 2010 10:39:57 anupbehare@gmail.com wrote:
now as I am getting u-boot prompt that means DDR initilised properly. now I am debuging for trap_init and flash_init().
Could be that your DDR init code somehow generates an exception that is triggered once trap_init() is called. This is also know to happen in the common denali_data_eye code. See here:
#if defined(CONFIG_DDR_DATA_EYE) /* * Running denali_core_search_data_eye() when ECC is enabled * causes non-ECC machine checks. This clears them. */ print_mcsr(); mtspr(SPRN_MCSR, mfspr(SPRN_MCSR)); print_mcsr(); #endif
I suggest you analyse this and the Denali registers for any source/status of a generated exception.
Cheers, Stefan
-- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office@denx.de