Initial program startup

Special routine is running prior to the starting ARM7TDMI in debugging mode. I've got this peace of code from Vasilis, who indicated they used it prior to making any measurements. So: what I have to do with this? No idea:

 UNLOCK_VALUE EQU 0xA05F
 LOCK_VALUE   EQU 0xFFFF
 HDR_OSC      EQU 0x10000008
 HDR_LOCK     EQU 0x10000014
 CLK50        EQU 0x0015C000
 CLK20        EQU 0x00120000

 SC_OSC       EQU 0x11000004
 SCLOCK       EQU 0x1100001C
 CLK_AP_30    EQU 0x70
 CLK_AP_26    EQU 0x60
 
 
ENTRY
 LDR r0,=HDR_LOCK
 LDR r1,=UNLOCK_VALUE
 STR r1,[r0]
 LDR r2,=HDR_OSC
 LDR r1,=CLK50
 STR r1,[r2]
 LDR r1,=LOCK_VALUE
 STR r1,[r0]
 
 LDR r0,=SCLOCK
 LDR r1,=UNLOCK_VALUE
 STR r1,[r0]
 LDR r2,=SC_OSC
 LDR r1,=CLK_AP_30
 STR r1,[r2]
 LDR r1,=LOCK_VALUE
 STR r1,[r0]
 
END