e200z6 Core Complex
MPC5565 Microcontroller Reference Manual, Rev. 1.0
3-26
Freescale Semiconductor
3.3.2.5
L1 Cache Control and Status Register 0 (L1CSR0)
The L1 cache control and status register 0 (L1CSR0) is a 32-bit register. The L1CSR0 register is accessed
using a
mfspr
or
mtspr
instruction. The SPR number for L1CSR0 is 1010 in decimal. The L1CSR0
register is shown in
.
The correct sequence necessary to change the value of LSCSR0 is as follows:
1.
msync
2.
isync
3.
mtspr
L1CSR0
The L1CSR0 bits are described in
WI
D
0
WDD
0
WA
M
CWM
DPB
DSB
DSTRM
CPE
0
CUL
CLO
CL
FC
0
CABT
CINV
CE
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
SPR - 1010; Read/Write; Reset - 0x0
Figure 3-16. L1 Cache Control and Status Register 0 (L1CSR0)
Table 3-9. L1CSR0 Field Descriptions
Bits
Name
Description
0:1
WID
Way instruction disable.
0 = The corresponding way is available for replacement by instruction miss line
fills.
1 = The corresponding way is not available for replacement by instruction miss
line fills.
Bit 0 corresponds to way 0.
Bit 1 corresponds to way 1.
The WID and WDD bits can be used for locking ways of the cache, and also are
used in determining the replacement policy of the cache.
2:3
—
Reserved
4:5
WDD
Way data disable.
0 = The corresponding way is available for replacement by data miss line fills.
1 = The corresponding way is not available for replacement by data miss line
fills.
Bit 4 corresponds to way 0.
Bit 5 corresponds to way 1.
The WID and WDD bits can be used for locking ways of the cache, and also are
used in determining the replacement policy of the cache.
6:9
—
Reserved
Содержание MPC5565
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