Figure 11-16 Rd Format, Write Tlb Lockdown; Table 11-10 Ram2 Memory Region Size - Epson ARM720T Core Cpu Manual

11: Test Support
In Figure 11-15, SIZE_R2 sets the memory region size. The allowed values of SIZE_R2 are
shown in Table 11-10.
The encoding for SIZE_R2 is different from SIZE_C.
Note:
11.5.1 Addressing the CAM, RAM1, and RAM2
For the CAM read or write, RAM1 read or write, and RAM2 read or write operations, you must
specify the index. The CAM and RAM1 operations use the value in the victim pointer, so you
must write this before any CAM or RAM1 operation. RAM2 uses a pipelined version of the
victim pointer used for the CAM or RAM1 operation. This means that to read from index N in
the RAM2 array, you must first perform an access to index N in either the CAM or RAM1.
The write TLB lockdown operation is:
MCR p15, 0, <Rd>, c10, c0, 0
The write TLB lockdown format for Rd is shown in Figure 11-16.
31
Base
11-12

Table 11-10 RAM2 memory region size

SIZE_R2[3:0]
b1000
b0100
b0010
b0000
b0001
26 25 20 19
Victim

Figure 11-16 Rd format, write TLB lockdown

Memory region size
1MB
64KB
16KB
4KB
1KB
SBZ
EPSON
1 0
P
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