HWPE MAC addresses coincide with pmpaddr

[JosseVanDelm]

It appears that some of the CSRs collide with the physical memory protection address reserved addresses.

   11100: 41 11        	addi	sp, sp, -16
   11102: 36 c2        	sw	a3, 4(sp)
   11104: ae 86        	mv	a3, a1
   11106: 92 45        	lw	a1, 4(sp)
   11108: 46 45        	lw	a0, 80(sp)
   1110a: 05 89        	andi	a0, a0, 1
   1110c: b6 42        	lw	t0, 76(sp)
   1110e: a6 42        	lw	t0, 72(sp)
   11110: 96 42        	lw	t0, 68(sp)
   11112: 86 42        	lw	t0, 64(sp)
   11114: f2 52        	lw	t0, 60(sp)
   11116: e2 52        	lw	t0, 56(sp)
   11118: b2 52        	lw	t0, 44(sp)
   1111a: a2 52        	lw	t0, 40(sp)
   1111c: 92 52        	lw	t0, 36(sp)
   1111e: 82 52        	lw	t0, 32(sp)
   11120: f2 42        	lw	t0, 28(sp)
   11122: e2 42        	lw	t0, 24(sp)
   11124: d2 55        	lw	a1, 52(sp)
   11126: 2e c4        	sw	a1, 8(sp)
   11128: 42 56        	lw	a2, 48(sp)
   1112a: 52 46        	lw	a2, 20(sp)
   1112c: 32 c6        	sw	a2, 12(sp)
   1112e: c2 47        	lw	a5, 16(sp)
   11130: 73 90 06 3d  	csrw	pmpaddr32, a3
   11134: 73 10 16 3d  	csrw	pmpaddr33, a2
   11138: 73 90 35 3d  	csrw	pmpaddr35, a1
   1113c: 73 10 47 3d  	csrw	pmpaddr36, a4
   11140: 73 d0 00 3c  	csrwi	pmpaddr16, 1
   11144: f3 25 30 3c  	csrr	a1, pmpaddr19
   11148: 81 45        	li	a1, 0
   1114a: 73 90 55 3c  	csrw	pmpaddr21, a1
   1114e: 01 00        	nop
   11150: 01 00        	nop
   11152: 01 00        	nop
   11154: 19 e1        	bnez	a0, 0x1115a <simple_mult+0x5a>
   11156: 6f 00 c0 02  	j	0x11182 <simple_mult+0x82>
   1115a: 6f 00 40 00  	j	0x1115e <simple_mult+0x5e>
   1115e: 32 45        	lw	a0, 12(sp)
   11160: a2 45        	lw	a1, 8(sp)
   11162: 73 90 15 3d  	csrw	pmpaddr33, a1
   11166: 73 d0 00 3c  	csrwi	pmpaddr16, 1
   1116a: f3 25 30 3c  	csrr	a1, pmpaddr19
   1116e: 81 45        	li	a1, 0
   11170: 73 90 55 3c  	csrw	pmpaddr21, a1
   11174: 01 00        	nop
   11176: 01 00        	nop
   11178: 01 00        	nop
   1117a: 73 10 35 3d  	csrw	pmpaddr35, a0
   1117e: 6f 00 80 02  	j	0x111a6 <simple_mult+0xa6>
   11182: 32 45        	lw	a0, 12(sp)
   11184: a2 45        	lw	a1, 8(sp)
   11186: 73 d0 00 3c  	csrwi	pmpaddr16, 1
   1118a: 73 26 30 3c  	csrr	a2, pmpaddr19
   1118e: 01 46        	li	a2, 0
   11190: 73 10 56 3c  	csrw	pmpaddr21, a2
   11194: 01 00        	nop
   11196: 01 00        	nop
   11198: 01 00        	nop
   1119a: 73 90 15 3d  	csrw	pmpaddr33, a1
   1119e: 73 10 35 3d  	csrw	pmpaddr35, a0
   111a2: 6f 00 40 00  	j	0x111a6 <simple_mult+0xa6>
   111a6: 73 d0 00 3c  	csrwi	pmpaddr16, 1
   111aa: 73 25 30 3c  	csrr	a0, pmpaddr19
   111ae: 01 45        	li	a0, 0
   111b0: 73 10 55 3c  	csrw	pmpaddr21, a0
   111b4: 01 00        	nop
   111b6: 01 00        	nop
   111b8: 01 00        	nop
   111ba: 41 01        	addi	sp, sp, 16
   111bc: 82 80        	ret

Not a priority right now, but something to be aware of?

[rgantonio]

Oof really? That wasn't on the list they had or did they just add it hmm...