Look at the LS1043a AN5012 Design Check List Rev. 3 about different SVR for these revisions:
https://www.nxp.com/webapp/Download?colCode=AN5012&Parent_nodeId=1412692250778715498030&Parent_pageT...
The LS1043A rev B (1.1) supports the following:
host OS with 64 KB page size requirement
Each PCI Express message signaled interrupts (MSI) supports four serial peripheral interface (SPI) interrupts
CoreLink generic interrupt controller (GIC-400) memory map supports both 4 KB and 64 KB granularity through a programmable bit in SCFG map
Have a great day,
Pavel Chubakov
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