44 lines
1.4 KiB
Plaintext
44 lines
1.4 KiB
Plaintext
#Written by: Michael Schwingen <rincewind@discworld.dascon.de>
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#############################################################################
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# setup expansion bus CS, disable external wdt
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#############################################################################
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mww 0xc4000000 0xbd113842 #CS0 : Flash, write enabled @0x50000000
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mww 0xc4000004 0x94d10013 #CS1
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mww 0xc4000008 0x95960003 #CS2
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mww 0xc400000c 0x00000000 #CS3
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mww 0xc4000010 0x80900003 #CS4
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mww 0xc4000014 0x9d520003 #CS5
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mww 0xc4000018 0x81860001 #CS6
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mww 0xc400001c 0x80900003 #CS7
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#############################################################################
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# init SDRAM controller: 16MB, one bank, CL3
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#############################################################################
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mww 0xCC000000 0x2A # SDRAM_CFG: 64MBit, CL3
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mww 0xCC000004 0 # disable refresh
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mww 0xCC000008 3 # NOP
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sleep 100
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mww 0xCC000004 2100 # set refresh counter
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mww 0xCC000008 2 # Precharge All Banks
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sleep 100
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mww 0xCC000008 4 # Auto Refresh
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mww 0xCC000008 4 # Auto Refresh
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mww 0xCC000008 4 # Auto Refresh
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mww 0xCC000008 4 # Auto Refresh
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mww 0xCC000008 4 # Auto Refresh
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mww 0xCC000008 4 # Auto Refresh
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mww 0xCC000008 4 # Auto Refresh
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mww 0xCC000008 4 # Auto Refresh
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mww 0xCC000008 1 # Mode Select CL3
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#mww 0xc4000020 0xffffee # CFG0: remove expansion bus boot flash
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#mirror at 0x00000000
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#big endian
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reg XSCALE_CTRL 0xF8
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#
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# detect flash
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#
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flash probe 0
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