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ARM: Ignore attempts to disable coprocessors that aren't implemented anyway.

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This commit is contained in:
Gabe Black 2010-06-02 12:58:11 -05:00
parent c3bf29bbea
commit c9c4dfc09d
2 changed files with 33 additions and 4 deletions
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18
src/arch/arm/isa.hh
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@ -110,7 +110,11 @@ namespace ArmISA
* Technically this should be 0, but we don't support those
* settings.
*/
miscRegs[MISCREG_CPACR] = 0x0fffffff;
CPACR cpacr = 0;
// Enable CP 10, 11
cpacr.cp10 = 0x3;
cpacr.cp11 = 0x3;
miscRegs[MISCREG_CPACR] = cpacr;
/* One region, unified map. */
miscRegs[MISCREG_MPUIR] = 0x100;
@ -249,9 +253,15 @@ namespace ArmISA
}
switch (misc_reg) {
case MISCREG_CPACR:
newVal = bits(val, 27, 0);
if (newVal != 0x0fffffff) {
panic("Disabling coprocessors isn't implemented.\n");
{
CPACR newCpacr = 0;
CPACR valCpacr = val;
newCpacr.cp10 = valCpacr.cp10;
newCpacr.cp11 = valCpacr.cp11;
if (newCpacr.cp10 != 0x3 || newCpacr.cp11 != 3) {
panic("Disabling coprocessors isn't implemented.\n");
}
newVal = newCpacr;
}
break;
case MISCREG_CSSELR:

19
src/arch/arm/miscregs.hh
View file

@ -230,6 +230,25 @@ namespace ArmISA
Bitfield<1> a; // Alignment fault checking
Bitfield<0> m; // MMU enable bit
EndBitUnion(SCTLR)
BitUnion32(CPACR)
Bitfield<1, 0> cp0;
Bitfield<3, 2> cp1;
Bitfield<5, 4> cp2;
Bitfield<7, 6> cp3;
Bitfield<9, 8> cp4;
Bitfield<11, 10> cp5;
Bitfield<13, 12> cp6;
Bitfield<15, 14> cp7;
Bitfield<17, 16> cp8;
Bitfield<19, 18> cp9;
Bitfield<21, 20> cp10;
Bitfield<23, 22> cp11;
Bitfield<25, 24> cp12;
Bitfield<27, 26> cp13;
Bitfield<30> d32dis;
Bitfield<31> asedis;
EndBitUnion(CPACR)
};
#endif // __ARCH_ARM_MISCREGS_HH__