26 lines
777 B
C
26 lines
777 B
C
#include <internals/mmu.h>
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/*
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mmu_pseudoTLBInit()
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We need the system to fill the TLB for us, so that it knows what
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happens to its contents. We don't want to edit the TLB ourselves, so
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we'll just read random data from every 4k-page in the rom area to have
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the system virtualize it entirely.
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The index system for TLB entries ensures this process will work for
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128-k or less add-ins. On SH7705 there is a limit, which is 384-k (it
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does probably not exist on SH7305) but there is no guarantee that the
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system will not go wild after 128-k.
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*/
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void mmu_pseudoTLBInit(void)
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{
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extern unsigned int romdata;
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unsigned int address = 0x00300000;
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unsigned int x;
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while(address <= (unsigned int)&romdata)
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{
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x = *((volatile unsigned int *)address);
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address += 0x1000;
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}
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}
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