U boot console display

取消
显示结果 
显示  仅  | 搜索替代 
您的意思是: 

U boot console display

615 次查看
sureshbk
Contributor II

Hi All,

we are working on processor P2041 with

*NOR flash device S29GL01GS10TFI010

*UART1 port of processor for console display

we have set the processor to hard coded RCW option ( RCW_CFG[0:4] = 1_1000 , 16-bit NOR Flash as boot location; dual 4-pin UARTs enabled; platform ratio of 6:1; core PLL ratio of 9 :1 ) and we have flashed the U-boot file (768KB) provided along with the P2041RDB at NOR location 0XEFF40000.We are not able to see the data on console display

-should the eLBC registers related to NOR in U-boot be edited for this problem?

-What are the parametrs need to be edited in the U boot for getting the display console ?

NOTE :we are not using the CTS and RTS of the UART1 PORT and have left those pins open

0 项奖励
1 回复

488 次查看
bpe
NXP Employee
NXP Employee

The Flash chip you are using is identical to the one used on P2041RDB,

therefore, if you did not alter the hardware connection, no eLBC-related

settings require adjustments. Regarding UART, the defauld baud rate

is set by CONFIG_BAUDRATE configuration macro which  for P2041RDB is

115200. Hardware flow control is controlled by

CONFIG_SERIAL_HW_FLOW_CONTROL macro, this macro not set for P2041RDB

default u-Boot configuration.

Note, the programming addresses you mentioned are _not_ NOR flash addresses

which are only 27 bits long. They are full 32-bit local physical addresses as

configured by u-Boot. This address mapping is software-configured.

If you are using a JTAG debugger to program your Flash, the address

map it creates may be different. Consult at your debugger or Flash

programming tool intialization scripts for the local physical address

map it establishes. u-Boot must be programmed in the upper 768KB

of the boot Flash.


Have a great day,
Platon

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

0 项奖励