b) Initialize the SHA1 sum in the Image with 0x00
The SHA1 sum is stored in Flash at:
- CFG_MONITOR_BASE + CFG_MONITOR_LEN + SHA1_SUM_POS
+ CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN + SHA1_SUM_POS
for the pcs440ep Flash: 0xfffa0000 + 0x60000 + -0x20
= 0xffffffe0
for the example in RAM: 0x300000 + 0x60000 + -0x20