further changes towards LITEKIT m5484 support. Board now runs until PCI bus scan
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@@ -3,6 +3,12 @@
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*/
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#include "startcf.h"
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#ifdef MACHINE_FIREBEE
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#include "firebee.h"
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#endif /* MACHINE_FIREBEE */
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#ifdef MACHINE_M5484LITE
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#include "m5484l.h"
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#endif /* MACHINE_M5484LITE */
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.extern _rt_vbr
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.extern _rt_cacr
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@@ -132,6 +138,7 @@ _mmu_init:
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// 00D0'0000 - 0x00DF'FFFF (last megabyte of ST RAM = Falcon video memory) locked ID=6
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// mapped to physical address 60D0'0000 (FPGA video memory)
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// video ram: read write execute normal write true
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#ifdef MACHINE_FIREBEE
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move.l #0x00d00000|MCF_MMU_MMUTR_ID(sca_page_ID)|std_mmutr,d0
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move.l #0x60d00000|writethrough_mmudr|MCF_MMU_MMUDR_LK,d1
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move.l d0,MCF_MMU_MMUTR
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@@ -143,6 +150,7 @@ _mmu_init:
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move.l #0x2000,d0
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move.l d0,_video_tlb // set page as video page
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clr.l _video_sbt // clear time
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#endif /* MACHINE_FIREBEE */
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// Make the TOS (in SDRAM) read-only
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@@ -157,13 +165,16 @@ _mmu_init:
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// 00f0'0000 locked
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// this maps virtual 0x00F0'0000 - 0x00FF'FFFF to physical 0xFFF0'0000 - 0xFFFF'FFFF effectively making I/O area
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// accesses ST-compatible (just the same what Atari made for TT and Falcon)
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#ifdef MACHINE_FIREBEE
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move.l #0x00f00000|std_mmutr,d0
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move.l #0xfff00000|nocache_precise_mmudr|MCF_MMU_MMUDR_LK,d1
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move.l d0,MCF_MMU_MMUTR
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move.l d1,MCF_MMU_MMUDR
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move.l d2,MCF_MMU_MMUOR // mapped to ffffxxx, precise,
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move.l d3,MCF_MMU_MMUOR // mapped to ffffxxx, precise,
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#endif /* MACHINE_FIREBEE */
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#ifdef MACHINE_FIREBEE
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// 1ff0'0000 locked
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// maps virtual 0x1FF0'0000 - 0x1FFF'FFFF to the same physical address
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move.l #0x1FF00000|std_mmutr,d0 // last megabyte of physical RAM. Reserved for BaS
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@@ -172,6 +183,7 @@ _mmu_init:
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move.l d1,MCF_MMU_MMUDR
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move.l d2,MCF_MMU_MMUOR // setzen data
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move.l d3,MCF_MMU_MMUOR // setzen instr
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#endif /* MACHINE_FIREBEE */
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move.l (sp)+,d2 // Restore registers
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move.l (sp)+,d3
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