Main Processor: Difference between revisions

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The custom SoC includes the ARM [http://www.arm.com/products/processors/cortex-a/cortex-a9.php Cortex-A9 MPCore] as its CPU, mounting four little-endian ARM Cortex-A9 processor cores, which is common in modern high performance embedded devices like cell phones and tablets. The PSVita cores have a MIDR value of <code>0x412FC09A</code>, meaning it is Cortex-A9 r2p10. Indeed there are usage of undocumented CP15 registers.
The custom SoC includes the ARM [http://www.arm.com/products/processors/cortex-a/cortex-a9.php Cortex-A9 MPCore] as its CPU, mounting four little-endian ARM Cortex-A9 processor cores, which is common in modern high performance embedded devices like cell phones and tablets. The PSVita cores have a MIDR value of <code>0x412FC09A</code>, meaning it is Cortex-A9 r2p10. Indeed there are usage of undocumented CP15 registers.
=== Implemented Coprocessor registers ===


{| class='wikitable'
{| class='wikitable'
! Register !! Name !! Description
! Register !! Name !! Used by !! Description
|-
| p14, #0, r0, c0, c0, #4 || DBGBVR0 || [[SceKernelThreadMgr]] || Breakpoint Value Register 0
|-
| p14, #0, r0, c0, c1, #4 || DBGBVR1 || [[SceKernelThreadMgr]] || Breakpoint Value Register 1
|-
| p14, #0, r0, c0, c2, #4 || DBGBVR2 || [[SceKernelThreadMgr]] || Breakpoint Value Register 2
|-
| p14, #0, r0, c0, c3, #4 || DBGBVR3 || [[SceKernelThreadMgr]] || Breakpoint Value Register 3
|-
| p14, #0, r0, c0, c4, #4 || DBGBVR4 || [[SceKernelThreadMgr]] || Breakpoint Value Register 4
|-
| p14, #0, r0, c0, c5, #4 || DBGBVR5 || [[SceKernelThreadMgr]] || Breakpoint Value Register 5
|-
| p14, #0, r0, c0, c0, #5 || DBGBCR0 || [[SceKernelThreadMgr]] || Breakpoint Control Register 0
|-
| p14, #0, r0, c0, c1, #5 || DBGBCR1 || [[SceKernelThreadMgr]] || Breakpoint Control Register 1
|-
| p14, #0, r0, c0, c2, #5 || DBGBCR2 || [[SceKernelThreadMgr]] || Breakpoint Control Register 2
|-
| p14, #0, r0, c0, c3, #5 || DBGBCR3 || [[SceKernelThreadMgr]] || Breakpoint Control Register 3
|-
| p14, #0, r0, c0, c4, #5 || DBGBCR4 || [[SceKernelThreadMgr]] || Breakpoint Control Register 4
|-
| p14, #0, r0, c0, c5, #5 || DBGBCR5 || [[SceKernelThreadMgr]] || Breakpoint Control Register 5
|-
| p14, #0, r0, c0, c0, #6 || DBGWVR0 || [[SceKernelThreadMgr]] || Watchpoint Value Register 0
|-
| p14, #0, r0, c0, c1, #6 || DBGWVR1 || [[SceKernelThreadMgr]] || Watchpoint Value Register 1
|-
| p14, #0, r0, c0, c2, #6 || DBGWVR2 || [[SceKernelThreadMgr]] || Watchpoint Value Register 2
|-
| p14, #0, r0, c0, c3, #6 || DBGWVR3 || [[SceKernelThreadMgr]] || Watchpoint Value Register 3
|-
| p14, #0, r0, c0, c0, #7 || DBGWCR0 || [[SceKernelThreadMgr]] || Watchpoint Control Register 0
|-
| p14, #0, r0, c0, c1, #7 || DBGWCR1 || [[SceKernelThreadMgr]] || Watchpoint Control Register 1
|-
| p14, #0, r0, c0, c2, #7 || DBGWCR2 || [[SceKernelThreadMgr]] || Watchpoint Control Register 2
|-
| p14, #0, r0, c0, c3, #7 || DBGWCR3 || [[SceKernelThreadMgr]] || Watchpoint Control Register 3
|-
| p14, #0, r0, c0, c2, #2 || DBGDSCRext || [[SceKernelThreadMgr]] || Debug Status and Control Register external view
|-
| p14, #6, r0, c0, c0, #0 || TEECR || [[SKBL]]/[[NSKBL]] || ThumbEE Configuration Register
|-
| p14, #6, r0, c1, c0, #0 || TEEHBR || [[SKBL]]/[[NSKBL]] || ThumbEE Handler Base Register
|-
| p14, #7, r0, c1, c0, #0 || JOSCR || [[SKBL]]/[[NSKBL]] || Jazelle OS Control Register
|-
| p15, #0, r0, c0, c0, #0 || MIDR || N/A || Main ID Register
|-
| p15, #0, r0, c0, c0, #1 || CTR || N/A || Cache Type Register
|-
| p15, #0, r0, c0, c0, #2 || TCMTR || N/A || TCM Type Register
|-
| p15, #0, r0, c0, c0, #3 || TLBTR || N/A || TLB Type Register
|-
| p15, #0, r0, c0, c0, #5 || MPIDR || [[SceSysmem]]/[[SceExcpmgr]] || Multiprocessor Affinity Register
|-
| p15, #0, r0, c0, c0, #6 || REVIDR || N/A || Revision ID Register
|-
| p15, #0, r0, c0, c1, #0 || ID_PFR0 || N/A || Processor Feature Register 0
|-
| p15, #0, r0, c0, c1, #1 || ID_PFR1 || N/A || Processor Feature Register 1
|-
| p15, #0, r0, c0, c1, #2 || ID_DFR0 || N/A || Debug Feature Register 0
|-
| p15, #0, r0, c0, c1, #3 || ID_AFR0 || N/A || Auxiliary Feature Register 0
|-
| p15, #0, r0, c0, c1, #4 || ID_MMFR0 || N/A || Memory Model Feature Register 0
|-
|-
| p15, #0, r0, c3, c0, #1 || DACR || Undocumented. Write-Only. Used by ScePower.
| p15, #0, r0, c0, c1, #5 || ID_MMFR1 || N/A || Memory Model Feature Register 1
|-
|-
| p15, #0, r0, c3, c0, #2 || DACR || Undocumented. Used by ScePower.
| p15, #0, r0, c0, c1, #6 || ID_MMFR2 || N/A || Memory Model Feature Register 2
|-
|-
| p15, #0, r0, c13, c0, #3 || TPIDRURO || User Read-Only Thread ID Register. Value is TLS pointer.
| p15, #0, r0, c0, c1, #7 || ID_MMFR3 || N/A || Memory Model Feature Register 3
|-
|-
| p15, #0, r0, c13, c0, #4 || TPIDRPRW || PL1 only Thread ID Register. Value is SceKernelThreadObject pointer.
| p15, #0, r0, c0, c2, #0 || ID_ISAR0 || N/A || Instruction Set Attribute Register 0
|-
| p15, #0, r0, c0, c2, #1 || ID_ISAR1 || N/A || Instruction Set Attribute Register 1
|-
| p15, #0, r0, c0, c2, #2 || ID_ISAR2 || N/A || Instruction Set Attribute Register 2
|-
| p15, #0, r0, c0, c2, #3 || ID_ISAR3 || N/A || Instruction Set Attribute Register 3
|-
| p15, #0, r0, c0, c2, #4 || ID_ISAR4 || N/A || Instruction Set Attribute Register 4
|-
| p15, #0, r0, c0, c2, #5 || ID_ISAR5 || N/A || Instruction Set Attribute Register 5
|-
| p15, #1, r0, c0, c0, #0 || CCSIDR || N/A || Cache Size ID Register
|-
| p15, #1, r0, c0, c0, #1 || CLIDR || N/A || Cache Level ID Register
|-
| p15, #1, r0, c0, c0, #7 || AIDR || N/A || Auxiliary ID Register
|-
| p15, #2, r0, c0, c0, #0 || CSSELR || [[NSKBL]] || Cache Size Selection Register
|-
| p15, #0, r0, c1, c0, #0 || SCTLR || [[SKBL]]/[[SceDriverTzs]]/[[NSKBL]]/[[SceSysmem]] || System Control Register
|-
| p15, #0, r0, c1, c0, #1 || ACTLR || [[SKBL]] || Auxiliary Control Register
|-
| p15, #0, r0, c1, c0, #2 || CPACR || [[SKBL]] || Coprocessor Access Control Register
|-
| p15, #0, r0, c1, c1, #0 || SCR || [[SKBL]] || Secure Configuration Register
|-
| p15, #0, r0, c1, c1, #1 || SDER || N/A || Secure Debug Enable Register
|-
| p15, #0, r0, c1, c1, #2 || NSACR || [[SKBL]] || Non-Secure Access Control Register
|-
| p15, #0, r0, c2, c0, #0 || TTBR0 || [[SKBL]]/[[SceSysmem]] || Translation Table Base Register 0
|-
| p15, #0, r0, c2, c0, #1 || TTBR1 || [[SKBL]]/[[SceSysmem]]/[[ScePower]] || Translation Table Base Register 1
|-
| p15, #0, r0, c2, c0, #2 || TTBCR || [[SKBL]]/[[NSKBL]] || Translation Table Base Control Register
|-
| p15, #0, r0, c3, c0, #0 || DACR || [[SKBL]]/[[SceSysmem]] || Domain Access Control Register
|-
| p15, #0, r0, c3, c0, #1 || DACR || [[ScePower]] || Undocumented. Write-Only.
|-
| p15, #0, r0, c3, c0, #2 || DACR || [[ScePower]] || Undocumented. Unknown.
|-
| p15, #0, r0, c5, c0, #0 || DFSR || [[SceExcpmgr]] || Data Fault Status Register
|-
| p15, #0, r0, c5, c0, #1 || IFSR || [[SceExcpmgr]] || Instruction Fault Status Register
|-
| p15, #0, r0, c5, c1, #0 || ADFSR || [[SceExcpmgr]] || Auxiliary Data Fault Status Register
|-
| p15, #0, r0, c5, c1, #1 || AIFSR || [[SceExcpmgr]] || Auxiliary Instruction Fault Status Register
|-
| p15, #0, r0, c6, c0, #0 || DFAR || [[SceExcpmgr]] || Data Fault Address Register
|-
| p15, #0, r0, c6, c0, #2 || IFAR || [[SceExcpmgr]] || Instruction Fault Address Register
|-
| p15, #0, r0, c7, c1, #0 || ICIALLUIS || [[SKBL]]/[[SceSysmem]] || Instruction cache invalidate all PoU, IS
|-
| p15, #0, r0, c7, c1, #6 || BPIALLIS || [[SKBL]]/[[SceSysmem]] || Branch predictor invalidate all IS
|-
| p15, #0, r0, c7, c4, #0 || PAR || [[SceSysmem]] || Physical Address Register
|-
| p15, #0, r0, c7, c5, #0 || ICIALLU || [[SKBL]]/[[SceSysmem]] || Instruction cache invalidate all PoU
|-
| p15, #0, r0, c7, c5, #1 || ICIMVAU || [[SceSysmem]] || Instruction cache invalidate
|-
| p15, #0, r0, c7, c5, #6 || BPIALL || [[SceSysmem]] || Branch predictor invalidate all
|-
| p15, #0, r0, c7, c6, #1 || DCIMVAC || [[SceSysmem]] || Data cache invalidate by MVA PoC
|-
| p15, #0, r0, c7, c6, #2 || DCISW || [[SKBL]]/[[SceSysmem]] || Data cache invalidate by set/way
|-
| p15, #0, r0, c7, c8, #0 || ATS1CPR || [[SceSysmem]] || Stage 1 Current state PL1 read
|-
| p15, #0, r0, c7, c8, #1 || ATS1CPW || [[SceSysmem]] || Stage 1 Current state PL1 write
|-
| p15, #0, r0, c7, c8, #2 || ATS1CUR || [[SceSysmem]] || Stage 1 Current state unprivileged read
|-
| p15, #0, r0, c7, c8, #3 || ATS1CUW || [[SceSysmem]] || Stage 1 Current state unprivileged write
|-
| p15, #0, r0, c7, c10, #1 || DCCMVAC || [[SceSysmem]] || Data cache clean by MVA PoC
|-
| p15, #0, r0, c7, c10, #2 || DCCSW || [[SceSysmem]] || Data cache clean by set/way
|-
| p15, #0, r0, c7, c14, #1 || DCCIMVAC || [[SceSysmem]] || Data cache clean and invalidate by MVA PoC
|-
| p15, #0, r0, c7, c14, #2 || DCCISW || [[SceSysmem]] || Data cache clean and invalidate by set/way
|-
| p15, #0, r0, c8, c3, #1 || TLBIMVAIS || [[SceSysmem]] || Invalidate unified TLB by MVA IS
|-
| p15, #0, r0, c8, c3, #3 || TLBIMVAAIS || [[SceSysmem]] || Invalidate unified TLB by MVA, all ASID IS
|-
| p15, #0, r0, c8, c7, #0 || TLBIALL || [[ScePower]] || Invalidate entire unified TLB
|-
| p15, #0, r0, c9, c12, #0 || PMCR || [[ScePerf]] || perf
|-
| p15, #0, r0, c9, c12, #1 || PMCNTENSET || [[ScePerf]] || perf
|-
| p15, #0, r0, c9, c12, #2 || PMCNTENCLR || [[ScePerf]] || perf
|-
| p15, #0, r0, c9, c12, #3 || PMOVSR || [[ScePerf]] || perf
|-
| p15, #0, r0, c9, c12, #4 || PMSWINC || [[ScePerf]] || perf
|-
| p15, #0, r0, c9, c12, #5 || PMSELR || [[ScePerf]] || perf
|-
| p15, #0, r0, c9, c13, #0 || PMCCNTR || [[ScePerf]] || perf
|-
| p15, #0, r0, c9, c13, #1 || PMXEVTYPER || [[ScePerf]] || perf
|-
| p15, #0, r0, c9, c13, #2 || PMXEVCNTR || [[ScePerf]] || perf
|-
| p15, #0, r0, c9, c14, #0 || PMUSERENR || [[ScePerf]] || perf
|-
| p15, #0, r0, c9, c14, #1 || PMINTENSET || [[ScePerf]] || perf
|-
| p15, #0, r0, c9, c14, #2 || PMINTENCLR || [[ScePerf]] || perf
|-
| p15, #0, r0, c10, c2, #0 || PRRR || [[ScePower]] || Primary Region Remap Register
|-
| p15, #0, r0, c10, c2, #1 || NMRR || [[ScePower]] || Normal Memory Remap Register
|-
| p15, #0, r0, c12, c0, #0 || VBAR || [[NSKBL]]/[[ScePower]]/[[SceKernelThreadMgr]] || Vector Base Address Register
|-
| p15, #0, r0, c12, c0, #1 || MVBAR || [[SKBL]] || Monitor Vector Base Address Register
|-
| p15, #0, r0, c12, c1, #0 || ISR || N/A || Interrupt Status Register
|-
| p15, #0, r0, c13, c0, #0 || FCSEIDR || N/A || FCSE Process ID Register
|-
| p15, #0, r0, c13, c0, #1 || CONTEXTIDR || [[SKBL]]/[[NSKBL]]/[[ScePower]] || Context ID Register
|-
| p15, #0, r0, c13, c0, #2 || TPIDRURW || [[NSKBL]] || User Read/Write Thread ID Register
|-
| p15, #0, r0, c13, c0, #3 || TPIDRURO || [[NSKBL]]/[[SceLibKernel]]/[[SceKernelThreadMgr]] || User Read-Only Thread ID Register. Value is TLS pointer.
|-
| p15, #0, r0, c13, c0, #4 || TPIDRPRW || [[NSKBL]]/[[SceExcpmgr]]/[[SceKernelThreadMgr]] || PL1 only Thread ID Register. Value is SceKernelThreadObject pointer.
|-
| p15, #0, r0, c15, c0, #0 || PCTLR || [[SKBL]] || Power Control Register
|-
| p15, #0, r0, c15, c0, #1 || N/A || [[SKBL]] || Diagnostic Control Register (undocumented, used for errata workarounds)
|}
|}


Line 34: Line 246:


* Another manual that's important is the [http://infocenter.arm.com/help/topic/com.arm.doc.ddi0407i/index.html ARM Cortex-A9 MPCore Technical Reference Manual] which is specific to the multi-core system the Vita uses. The main information of use are descriptors for the private memory region defined with the <code>PERIPHBASE</code> signal. This is mapped to [[Physical Memory|physical address]] <code>0x1A000000</code>.
* Another manual that's important is the [http://infocenter.arm.com/help/topic/com.arm.doc.ddi0407i/index.html ARM Cortex-A9 MPCore Technical Reference Manual] which is specific to the multi-core system the Vita uses. The main information of use are descriptors for the private memory region defined with the <code>PERIPHBASE</code> signal. This is mapped to [[Physical Memory|physical address]] <code>0x1A000000</code>.
* Some reserved registers are documented in the Cortex-A9 Errata Notices ([https://developer.arm.com/documentation/uan0005/d/ r0]/[https://developer.arm.com/documentation/uan0006/d/ r1]/[https://developer.arm.com/documentation/uan0007/d/ r2]/[https://developer.arm.com/documentation/uan0008/d/ r3]/[https://developer.arm.com/documentation/uan0009/d/ r4])


* Cortex-A9 Technical Reference Manual
* Cortex-A9 Technical Reference Manual
Line 107: Line 321:
== L2 Cache ==
== L2 Cache ==


PSVita uses the [http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0246f/index.html PL310 r3p1-50rel0] L2 cache (Cache ID Register = 0x410000C7) that is [[Physical Memory|mapped]] to paddr <code>0x1A002000</code>.
Check [[Caches]].
 
=== RO registers ===
 
{| class='wikitable'
! Register name !! Value
|-
| Cache ID Register || 0x410000c7
|-
| Cache Type Register || 0x1e440440
|}
 


[[Category:Devices]]
[[Category:Devices]]

Latest revision as of 07:18, 13 January 2024

Main SoC

See Kermit.

Cortex A9 MPcore

The custom SoC includes the ARM Cortex-A9 MPCore as its CPU, mounting four little-endian ARM Cortex-A9 processor cores, which is common in modern high performance embedded devices like cell phones and tablets. The PSVita cores have a MIDR value of 0x412FC09A, meaning it is Cortex-A9 r2p10. Indeed there are usage of undocumented CP15 registers.

Implemented Coprocessor registers

Register Name Used by Description
p14, #0, r0, c0, c0, #4 DBGBVR0 SceKernelThreadMgr Breakpoint Value Register 0
p14, #0, r0, c0, c1, #4 DBGBVR1 SceKernelThreadMgr Breakpoint Value Register 1
p14, #0, r0, c0, c2, #4 DBGBVR2 SceKernelThreadMgr Breakpoint Value Register 2
p14, #0, r0, c0, c3, #4 DBGBVR3 SceKernelThreadMgr Breakpoint Value Register 3
p14, #0, r0, c0, c4, #4 DBGBVR4 SceKernelThreadMgr Breakpoint Value Register 4
p14, #0, r0, c0, c5, #4 DBGBVR5 SceKernelThreadMgr Breakpoint Value Register 5
p14, #0, r0, c0, c0, #5 DBGBCR0 SceKernelThreadMgr Breakpoint Control Register 0
p14, #0, r0, c0, c1, #5 DBGBCR1 SceKernelThreadMgr Breakpoint Control Register 1
p14, #0, r0, c0, c2, #5 DBGBCR2 SceKernelThreadMgr Breakpoint Control Register 2
p14, #0, r0, c0, c3, #5 DBGBCR3 SceKernelThreadMgr Breakpoint Control Register 3
p14, #0, r0, c0, c4, #5 DBGBCR4 SceKernelThreadMgr Breakpoint Control Register 4
p14, #0, r0, c0, c5, #5 DBGBCR5 SceKernelThreadMgr Breakpoint Control Register 5
p14, #0, r0, c0, c0, #6 DBGWVR0 SceKernelThreadMgr Watchpoint Value Register 0
p14, #0, r0, c0, c1, #6 DBGWVR1 SceKernelThreadMgr Watchpoint Value Register 1
p14, #0, r0, c0, c2, #6 DBGWVR2 SceKernelThreadMgr Watchpoint Value Register 2
p14, #0, r0, c0, c3, #6 DBGWVR3 SceKernelThreadMgr Watchpoint Value Register 3
p14, #0, r0, c0, c0, #7 DBGWCR0 SceKernelThreadMgr Watchpoint Control Register 0
p14, #0, r0, c0, c1, #7 DBGWCR1 SceKernelThreadMgr Watchpoint Control Register 1
p14, #0, r0, c0, c2, #7 DBGWCR2 SceKernelThreadMgr Watchpoint Control Register 2
p14, #0, r0, c0, c3, #7 DBGWCR3 SceKernelThreadMgr Watchpoint Control Register 3
p14, #0, r0, c0, c2, #2 DBGDSCRext SceKernelThreadMgr Debug Status and Control Register external view
p14, #6, r0, c0, c0, #0 TEECR SKBL/NSKBL ThumbEE Configuration Register
p14, #6, r0, c1, c0, #0 TEEHBR SKBL/NSKBL ThumbEE Handler Base Register
p14, #7, r0, c1, c0, #0 JOSCR SKBL/NSKBL Jazelle OS Control Register
p15, #0, r0, c0, c0, #0 MIDR N/A Main ID Register
p15, #0, r0, c0, c0, #1 CTR N/A Cache Type Register
p15, #0, r0, c0, c0, #2 TCMTR N/A TCM Type Register
p15, #0, r0, c0, c0, #3 TLBTR N/A TLB Type Register
p15, #0, r0, c0, c0, #5 MPIDR SceSysmem/SceExcpmgr Multiprocessor Affinity Register
p15, #0, r0, c0, c0, #6 REVIDR N/A Revision ID Register
p15, #0, r0, c0, c1, #0 ID_PFR0 N/A Processor Feature Register 0
p15, #0, r0, c0, c1, #1 ID_PFR1 N/A Processor Feature Register 1
p15, #0, r0, c0, c1, #2 ID_DFR0 N/A Debug Feature Register 0
p15, #0, r0, c0, c1, #3 ID_AFR0 N/A Auxiliary Feature Register 0
p15, #0, r0, c0, c1, #4 ID_MMFR0 N/A Memory Model Feature Register 0
p15, #0, r0, c0, c1, #5 ID_MMFR1 N/A Memory Model Feature Register 1
p15, #0, r0, c0, c1, #6 ID_MMFR2 N/A Memory Model Feature Register 2
p15, #0, r0, c0, c1, #7 ID_MMFR3 N/A Memory Model Feature Register 3
p15, #0, r0, c0, c2, #0 ID_ISAR0 N/A Instruction Set Attribute Register 0
p15, #0, r0, c0, c2, #1 ID_ISAR1 N/A Instruction Set Attribute Register 1
p15, #0, r0, c0, c2, #2 ID_ISAR2 N/A Instruction Set Attribute Register 2
p15, #0, r0, c0, c2, #3 ID_ISAR3 N/A Instruction Set Attribute Register 3
p15, #0, r0, c0, c2, #4 ID_ISAR4 N/A Instruction Set Attribute Register 4
p15, #0, r0, c0, c2, #5 ID_ISAR5 N/A Instruction Set Attribute Register 5
p15, #1, r0, c0, c0, #0 CCSIDR N/A Cache Size ID Register
p15, #1, r0, c0, c0, #1 CLIDR N/A Cache Level ID Register
p15, #1, r0, c0, c0, #7 AIDR N/A Auxiliary ID Register
p15, #2, r0, c0, c0, #0 CSSELR NSKBL Cache Size Selection Register
p15, #0, r0, c1, c0, #0 SCTLR SKBL/SceDriverTzs/NSKBL/SceSysmem System Control Register
p15, #0, r0, c1, c0, #1 ACTLR SKBL Auxiliary Control Register
p15, #0, r0, c1, c0, #2 CPACR SKBL Coprocessor Access Control Register
p15, #0, r0, c1, c1, #0 SCR SKBL Secure Configuration Register
p15, #0, r0, c1, c1, #1 SDER N/A Secure Debug Enable Register
p15, #0, r0, c1, c1, #2 NSACR SKBL Non-Secure Access Control Register
p15, #0, r0, c2, c0, #0 TTBR0 SKBL/SceSysmem Translation Table Base Register 0
p15, #0, r0, c2, c0, #1 TTBR1 SKBL/SceSysmem/ScePower Translation Table Base Register 1
p15, #0, r0, c2, c0, #2 TTBCR SKBL/NSKBL Translation Table Base Control Register
p15, #0, r0, c3, c0, #0 DACR SKBL/SceSysmem Domain Access Control Register
p15, #0, r0, c3, c0, #1 DACR ScePower Undocumented. Write-Only.
p15, #0, r0, c3, c0, #2 DACR ScePower Undocumented. Unknown.
p15, #0, r0, c5, c0, #0 DFSR SceExcpmgr Data Fault Status Register
p15, #0, r0, c5, c0, #1 IFSR SceExcpmgr Instruction Fault Status Register
p15, #0, r0, c5, c1, #0 ADFSR SceExcpmgr Auxiliary Data Fault Status Register
p15, #0, r0, c5, c1, #1 AIFSR SceExcpmgr Auxiliary Instruction Fault Status Register
p15, #0, r0, c6, c0, #0 DFAR SceExcpmgr Data Fault Address Register
p15, #0, r0, c6, c0, #2 IFAR SceExcpmgr Instruction Fault Address Register
p15, #0, r0, c7, c1, #0 ICIALLUIS SKBL/SceSysmem Instruction cache invalidate all PoU, IS
p15, #0, r0, c7, c1, #6 BPIALLIS SKBL/SceSysmem Branch predictor invalidate all IS
p15, #0, r0, c7, c4, #0 PAR SceSysmem Physical Address Register
p15, #0, r0, c7, c5, #0 ICIALLU SKBL/SceSysmem Instruction cache invalidate all PoU
p15, #0, r0, c7, c5, #1 ICIMVAU SceSysmem Instruction cache invalidate
p15, #0, r0, c7, c5, #6 BPIALL SceSysmem Branch predictor invalidate all
p15, #0, r0, c7, c6, #1 DCIMVAC SceSysmem Data cache invalidate by MVA PoC
p15, #0, r0, c7, c6, #2 DCISW SKBL/SceSysmem Data cache invalidate by set/way
p15, #0, r0, c7, c8, #0 ATS1CPR SceSysmem Stage 1 Current state PL1 read
p15, #0, r0, c7, c8, #1 ATS1CPW SceSysmem Stage 1 Current state PL1 write
p15, #0, r0, c7, c8, #2 ATS1CUR SceSysmem Stage 1 Current state unprivileged read
p15, #0, r0, c7, c8, #3 ATS1CUW SceSysmem Stage 1 Current state unprivileged write
p15, #0, r0, c7, c10, #1 DCCMVAC SceSysmem Data cache clean by MVA PoC
p15, #0, r0, c7, c10, #2 DCCSW SceSysmem Data cache clean by set/way
p15, #0, r0, c7, c14, #1 DCCIMVAC SceSysmem Data cache clean and invalidate by MVA PoC
p15, #0, r0, c7, c14, #2 DCCISW SceSysmem Data cache clean and invalidate by set/way
p15, #0, r0, c8, c3, #1 TLBIMVAIS SceSysmem Invalidate unified TLB by MVA IS
p15, #0, r0, c8, c3, #3 TLBIMVAAIS SceSysmem Invalidate unified TLB by MVA, all ASID IS
p15, #0, r0, c8, c7, #0 TLBIALL ScePower Invalidate entire unified TLB
p15, #0, r0, c9, c12, #0 PMCR ScePerf perf
p15, #0, r0, c9, c12, #1 PMCNTENSET ScePerf perf
p15, #0, r0, c9, c12, #2 PMCNTENCLR ScePerf perf
p15, #0, r0, c9, c12, #3 PMOVSR ScePerf perf
p15, #0, r0, c9, c12, #4 PMSWINC ScePerf perf
p15, #0, r0, c9, c12, #5 PMSELR ScePerf perf
p15, #0, r0, c9, c13, #0 PMCCNTR ScePerf perf
p15, #0, r0, c9, c13, #1 PMXEVTYPER ScePerf perf
p15, #0, r0, c9, c13, #2 PMXEVCNTR ScePerf perf
p15, #0, r0, c9, c14, #0 PMUSERENR ScePerf perf
p15, #0, r0, c9, c14, #1 PMINTENSET ScePerf perf
p15, #0, r0, c9, c14, #2 PMINTENCLR ScePerf perf
p15, #0, r0, c10, c2, #0 PRRR ScePower Primary Region Remap Register
p15, #0, r0, c10, c2, #1 NMRR ScePower Normal Memory Remap Register
p15, #0, r0, c12, c0, #0 VBAR NSKBL/ScePower/SceKernelThreadMgr Vector Base Address Register
p15, #0, r0, c12, c0, #1 MVBAR SKBL Monitor Vector Base Address Register
p15, #0, r0, c12, c1, #0 ISR N/A Interrupt Status Register
p15, #0, r0, c13, c0, #0 FCSEIDR N/A FCSE Process ID Register
p15, #0, r0, c13, c0, #1 CONTEXTIDR SKBL/NSKBL/ScePower Context ID Register
p15, #0, r0, c13, c0, #2 TPIDRURW NSKBL User Read/Write Thread ID Register
p15, #0, r0, c13, c0, #3 TPIDRURO NSKBL/SceLibKernel/SceKernelThreadMgr User Read-Only Thread ID Register. Value is TLS pointer.
p15, #0, r0, c13, c0, #4 TPIDRPRW NSKBL/SceExcpmgr/SceKernelThreadMgr PL1 only Thread ID Register. Value is SceKernelThreadObject pointer.
p15, #0, r0, c15, c0, #0 PCTLR SKBL Power Control Register
p15, #0, r0, c15, c0, #1 N/A SKBL Diagnostic Control Register (undocumented, used for errata workarounds)

Each core includes the following features:

  • L1 Instruction Cache of 32 KiB and Data Cache of 32 KiB
  • Media Processing Engine (MPE) that can execute Advanced SIMD instructions (NEONv1) and Vector Floating-Point v3 instructions (VFPv3)

In addition, there is a L2 cache of 2 MiB shared by all cores, while precisely speaking, it's external to the ARM processor core.

Documentation

A lot of useful information is available about ARM (Advanced RISC Machines) on the internet including ARM Ltd. official site.

  • Refer to the following document for the instruction set, memory model and programmers' model: ARM Architecture Reference Manual ARMv7-A and ARMv7-R edition.
  • Some reserved registers are documented in the Cortex-A9 Errata Notices (r0/r1/r2/r3/r4)
  • Cortex-A9 Technical Reference Manual

(corresponding to the chip revision supposed to be included in DevKit):

http://infocenter.arm.com/help/topic/com.arm.doc.ddi0388f/DDI0388F_cortex_a9_r2p2_trm.pdf

  • Cortex-A9 NEON Media Processing Engine Technical Reference Manual

(NEON: Advanced SIMD instructions)

http://infocenter.arm.com/help/topic/com.arm.doc.ddi0409f/DDI0409F_cortex_a9_neon_mpe_r2p2_trm.pdf

  • Cortex-A9 NEON MPE > VFPv3 architecture hardware support

http://infocenter.arm.com/help/topic/com.arm.doc.ddi0409f/CHDEEJDB.html

(The above reference destination has been confirmed as of June 26, 2014. Note that pages may have been subsequently moved or its contents modified.)

Identification registers

Register name Value
AIDR 0x00000000
CCSIDR 0x701FE019
CLIDR 0x09200003
CTR 0x83338003
ID_AFR0 0x00000000
ID_DFR0 0x00010444
ID_ISAR0 0x00101111
ID_ISAR1 0x13112111
ID_ISAR2 0x21232041
ID_ISAR3 0x11112131
ID_ISAR4 0x00011142
ID_ISAR5 0x00000000
ID_MMFR0 0x00100103
ID_MMFR1 0x20000000
ID_MMFR2 0x01230000
ID_MMFR3 0x00102111
ID_PFR0 0x00001231
ID_PFR1 0x00000011
MIDR 0x412FC09A
MPIDR 0x80000003
REVIDR 0x412FC09A
TCMTR 0x00000000
TLBTR 0x00000402

Interrupt Controller

As part of the Cortex A9 MPcore, the Vita also implements the Generic Interrupt Controller Architecture. More information on interrupts can be found here.

L2 Cache

Check Caches.

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