rinku takkar

P1022 local bus access issue

Discussion created by rinku takkar on May 11, 2017
Latest reply on May 22, 2017 by alexander.yakovlev

We are not able to access the local bus interface in P1022 . Following are the configuration settings:-

 

PMUXCR[eLBC_DIU] = 10   16-bit GPCM/ 28-bit Address

cfg_rom_loc[0:3] = 0110        On-chip boot ROM-SPI configuration

 

BR0 : E8001001

OR0 : F80000FF7

 

BR1 : FF800001

OR1 : FFFF8FF7

 

BR2 : FFDF0801

OR2: FFFF8FF7

 

BR3: FFEF8801

OR3: FFFF8FF7

 

Attached is the memory map as per our understanding.

 

Observations:

 

1. While trying to access any register within the specified range as per the base register and option register setting corresponding chip select signal is not asserted.

2. Processor does not boot up if we reconfigure the BR0 and OR0 register values in uboot file.

 

Kindly guide.

 

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