[U-Boot-Users] value of r4 in start.S in boot_cold?

[Prathima_Kolar]

Hello,
I am not able to figure out the content of register r4 in the given code
snippet.
I also wanted to know the significance of the address 0x 0F010000 got from
the line "lwz     r4, 0(r3)".
 
boot_cold:
#if defined(CONFIG_MPC8260ADS)
            lis         r3, CFG_DEFAULT_IMMR at h
            nop
            lwz       r4, 0(r3)
            nop
            rlwinm  r4, r4, 0, 8, 5
            nop
            oris       r4, r4, 0x0200
            nop
            stw       r4, 0(r3)
            nop
 
Thanks & Warm Regards,
Prathima.
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