Application code structure

AN4231

16/22

DocID024130 Rev 2

Moreover it is necessary to disable the Software Watchdog and to jump to the code in RAM,

to be executed.

All this code is inserted in a section that is copied in the RAM after boot.

RAM Wakeup code function

.section

".ROM_code_to_be_copied", "vax"

.vle

.globl

z4_ram_start_code

.align 4

z4_ram_start_code:

#******************

# Enable SPE in MSR

#******************

mfMSR r6

e_or2is

r6, 0x0200

mtMSR r6

#TLB4 =

pbridgeA

e_lis r3, 0x1004

mtmas0 r3

e_lis

r3, 0xC000

e_or2i

r3, 0x0800

mtmas1 r3

e_lis

r3, 0xC000

e_or2i

r3, 0x000A

mtmas2 r3

e_lis

r3, 0xC000

e_or2i

r3, 0x003F

mtmas3 r3

tlbwe

#TLB6 =

Peripheral Bridge and BAM

#0x6 0xC0000600 0xFFC00028 0xFFC0003F

e_lis r3, 0x1006

mtmas0 r3