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LS1021AIOT -  RCW configuration

Question asked by SANJU VARGHESE on Oct 6, 2015
Latest reply on Oct 8, 2015 by SANJU VARGHESE

Hi,

I am using LS1021aiot reference board. During the SD card booting, I have seen that it is reading the RCW file. Can you please help me to find the answers of the following questions?

Here is the u-boot log

 

U-Boot 2015.01+ls1+g3281947 (Sep 14 2015 - 11:08:45)

CPU:   Freescale LayerScape LS1021E, Version: 1.0, (0x87081110)

Clock Configuration:

       CPU0(ARMV7):1000 MHz,

       Bus:300  MHz, DDR:800  MHz (1600 MT/s data rate),

Reset Configuration Word (RCW):

       00000000: 0608000a 00000000 00000000 00000000                           

       00000010: 20000000 08407900 60025a00 21046000                           

       00000020: 00000000 00000000 00000000 00038000                           

       00000030: 20024800 881b1340 00000000 00000000                           

Board: LS1021AIOT                                                              

CPLD:  V2.3                                                                    

I2C:   ready                                                                   

DRAM:  1 GiB                                                                   

Using SERDES1 Protocol: 32 (0x20)                                              

MMC:   FSL_SDHC: 0                                                             

EEPROM: NXID v1                                                                

PCIe1: Root Complex no link, regs @ 0x3400000                                  

PCIe2: Root Complex no link, regs @ 0x3500000                                  

In:    serial                                                                  

Out:   serial                                                                  

Err:   serial                                                                  

SEC0: RNG instantiated                                                         

SATA link 0 timeout.                                                           

AHCI 0001.0300 1 slots 1 ports ? Gbps 0x1 impl SATA mode                       

flags: 64bit ncq pm clo only pmp fbss pio slum part ccc                        

scanning bus for devices...                                                    

Found 0 device(s).                                                             

SCSI:  Net:   eTSEC1 is in sgmii mode.                                         

eTSEC2 is in sgmii mode.                                                       

Phy 4 not found                                                                

PHY reset timed out                                                            

eTSEC1, eTSEC2 [PRIME], eTSEC3                                                 

Hit any key to stop autoboot:  0

 

1. From where the RCW file is getting read. Whether the u-boot binary is having an RCW file inside?

2. How can I change the rcw configuration?

3. All the pin-muxing is happening inside the rcw file? (or Do we need to care about the pinmuxing at the kernel side)?

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