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Change the default IRQs. 

* Reserve IRQ 0 to be used as a "non-maskable interrupt" (NMI) in the
   future.

 * Use IRQ 2 for the LiteX. This matches the standard mor1k config which
   connects the UART to IRQ 2.

This change is needed for Linux running on LiteX as it gets grumpy with
using IRQ 0 for anything other other than an NMI.
This commit is contained in:
Tim 'mithro' Ansell 2017-10-29 08:13:11 -07:00
parent e07bd71b16
commit 73e0036b99
1 changed files with 3 additions and 2 deletions
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5
litex/soc/integration/soc_core.py
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@ -36,8 +36,9 @@ class SoCCore(Module):
"leds": 6, # user "leds": 6, # user
} }
interrupt_map = { interrupt_map = {
"uart": 0, "nmi": 0, # Reserve zero for "non-maskable interrupt"
"timer0": 1, "timer0": 1, # LiteX Timer
"uart": 2, # LiteX UART (IRQ 2 for UART matches mor1k standard config).
} }
mem_map = { mem_map = {
"rom": 0x00000000, # (default shadow @0x80000000) "rom": 0x00000000, # (default shadow @0x80000000)