Firebee/BaS_gcc
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

renamed "slot" to "device" for better wording

Browse Source
This commit is contained in:
Markus Fröschle
2013-11-05 20:52:20 +00:00
parent ec9272de77
commit c2d8850de2
4 changed files with 36 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
BaS_gcc/sources/mmu.S
View File

@@ -168,7 +168,7 @@ _mmu_init:
// 00D0'0000 - 0x00DF'FFFF (last megabyte of ST RAM = Falcon video memory) locked ID=6
// mapped to physical address 60D0'0000 (FPGA video memory)
// video ram: read write execute normal write true
#ifdef MACHINE_FIREBEE
#if MACHINE_FIREBEE
move.l #0x00d00000|MCF_MMU_MMUTR_ID(sca_page_ID)|std_mmutr,d0
move.l #0x60d00000|writethrough_mmudr|MCF_MMU_MMUDR_LK,d1
move.l d0,MCF_MMU_MMUTR
@@ -196,13 +196,23 @@ _mmu_init:
// this maps virtual 0x00F0'0000 - 0x00FF'FFFF to physical 0xFFF0'0000 - 0xFFFF'FFFF effectively making I/O area
// accesses ST-compatible (just the same what Atari made for TT and Falcon). This does not get mapped for the
// m5484LITE boards which enables us to later act on I/O access attempts during a page miss exception
#ifdef MACHINE_FIREBEE
#if MACHINE_FIREBEE
move.l #0x00f00000|std_mmutr,d0
move.l #0xfff00000|nocache_precise_mmudr|MCF_MMU_MMUDR_LK,d1
move.l d0,MCF_MMU_MMUTR
move.l d1,MCF_MMU_MMUDR
move.l d2,MCF_MMU_MMUOR // mapped to ffffxxx, precise,
move.l d3,MCF_MMU_MMUOR // mapped to ffffxxx, precise,
#elif MACHINE_M5484LITE
//
// Instead, we lock PCI address space. Uncached, precise. For now, only for the M5484LITE
//
move.l #0x80000000|std_mmutr,d0
move.l #0x80000000|nocache_precise_mmudr|MCF_MMU_MMUDR_LK,d1
move.l d0,MCF_MMU_MMUTR
move.l d1,MCF_MMU_MMUDR
move.l d2,MCF_MMU_MMUOR // mapped to ffffxxx, precise,
move.l d3,MCF_MMU_MMUOR // mapped to ffffxxx, precise,
#endif /* MACHINE_FIREBEE */
// maps (locked) the last MB (this is where BaS .data and .bss resides) of physical SDRAM to the same physical address