Changes between Version 2 and Version 3 of UBoot
- Timestamp:
- 2010-06-19T21:19:58Z (14 years ago)
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UBoot
v2 v3 17 17 18 18 Qi does much less HW initialization than U-Boot so it may be necessary to add more HW initialization to HelenOS to support it. (E.g. turning on display backlight). 19 20 == Machine state on image entry == 21 22 The uImage can specify: 23 * address at which it should be loaded 24 * address of the entry point 25 26 U-Boot transfers control to the entry point. Upon this transfer CPSR![7:0] = 0xd3 = 0b 1101 0111. In other words: 27 28 || Field || Value || Meaning || 29 || I || 1 || IRQ interrupts are disabled || 30 || F || 1 || FIQ interrupts are disabled || 31 || T || 0 || ARM execution (not Thumb) || 32 || M || 0b10111 || Processor is in ''Abort'' mode?! ||