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| − | The '''Processor ID''' ('''PRId''') is a read-only, special-purpose register found in the [[MIPS32]] and [[MIPS64]] ISAs that can be queried to identify the [[MIPS]] CPU. The Processor ID should be unique for each instruction set or CPU control register change. The PRId is the 15th register in [[Coprocessor 0 - MIPS|Coprocessor 0]].
| + | abc |
| − | | |
| − | == Register layout ==
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| − | The PRId is the 15th register in [[Coprocessor 0 - MIPS|Coprocessor 0]]. It contains company options, company ID, CPU ID, and revision ID.
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| − | {| class="wikitable"
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| − | |-
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| − | | <span style="float: left">31</span><span style="float: right">24</span> || <span style="float: left">23</span><span style="float: right">16</span> || <span style="float: left">15</span><span style="float: right">8</span> || <span style="float: left">7</span><span style="float: right">0</span>
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| − | |-
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| − | | align="center" style="width: 150px;" | Company Options || align="center" style="width: 150px;" | Company ID || align="center" style="width: 150px;" | CPU ID || align="center" style="width: 150px;" | Revision
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| − | |}
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| − | | |
| − | === Company Options ===
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| − | The Company Options field is the most significant byte of the RPId register. The company options field depends on the manufacturer and the exact model being used. Consult your CPU manual for more information.
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| − | | |
| − | === Company ID ===
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| − | The Company ID field is located at bits 16 through 23. Because the company ID is a relatively new addition, legacy processors have it defined as 0. The linux kernel defines the following values:<ref>[https://github.com/torvalds/linux/blob/master/arch/mips/include/asm/cpu.h GitHub linux/arch/mips/include/asm/cpu.h]</ref>
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| − | | |
| − | {| class="wikitable sortable"
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| − | |-
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| − | ! Company ID !! Company
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| − | |-
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| − | | 0x000000 || Legacy
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| − | |-
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| − | | 0x010000 || MIPS
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| − | |-
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| − | | 0x020000 || Broadcom
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| − | |-
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| − | | 0x030000 || Alchemy
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| − | |-
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| − | | 0x040000 || Sibyte
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| − | |-
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| − | | 0x050000 || Sandcraft
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| − | |-
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| − | | 0x060000 || NXP
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| − | |-
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| − | | 0x070000 || Toshiba
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| − | |-
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| − | | 0x080000 || LSI
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| − | |-
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| − | | 0x0b0000 || Lexra
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| − | |-
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| − | | 0x0c0000 || Netlogic
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| − | |-
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| − | | 0x0d0000 || Cavium
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| − | |-
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| − | | 0xd00000 || Ingenic
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| − | |}
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| − | | |
| − | === CPU ID ===
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| − | ==== Legacy ====
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| − | {| class="wikitable sortable"
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| − | |-
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| − | ! CPU ID !! CPU
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| − | |-
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| − | | 0x0100 || R2000
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| − | |-
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| − | | 0x0100 || AU1 Rev1
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| − | |-
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| − | | 0x0200 || AU2 Rev2
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| − | |-
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| − | | 0x0200 || R3000
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| − | |-
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| − | | 0x0300 || R6000
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| − | |-
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| − | | 0x0400 || R4000
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| − | |-
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| − | | 0x0600 || R6000A
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| − | |-
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| − | | 0x0900 || R10000
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| − | |-
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| − | | 0x0b00 || R4300
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| − | |-
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| − | | 0x0c00 || VR41XX
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| − | |-
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| − | | 0x0e00 || R12000
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| − | |-
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| − | | 0x0f00 || R14000
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| − | |-
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| − | | 0x1000 || R8000
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| − | |-
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| − | | 0x1200 || PR4450
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| − | |-
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| − | | 0x2000 || R4600
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| − | |-
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| − | | 0x2100 || R4700
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| − | |-
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| − | | 0x2200 || TX39
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| − | |-
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| − | | 0x2200 || R4640
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| − | |-
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| − | | 0x2200 || R4650
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| − | |-
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| − | | 0x2300 || R5000
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| − | |-
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| − | | 0x2d00 || TX49
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| − | |-
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| − | | 0x2400 || SONIC
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| − | |-
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| − | | 0x2500 || MAGIC
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| − | |-
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| − | | 0x2700 || RM7000
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| − | |-
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| − | | 0x2800 || NEVADA (RM5260?)
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| − | |-
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| − | | 0x3400 || RM9000
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| − | |-
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| − | | 0x4200 || LOONGSON1
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| − | |-
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| − | | 0x5400 || R5432
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| − | |-
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| − | | 0x5500 || R5500
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| − | |-
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| − | | 0x6300 || LOONGSON2
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| − | |-
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| − | | 0xff00 || Unknown
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| − | |}
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| − | | |
| − | ==== MIPS ====
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| − | {| class="wikitable sortable"
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| − | |-
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| − | ! CPU ID !! CPU
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| − | |-
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| − | | 0x8000 || 4KC
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| − | |-
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| − | | 0x8100 || 5KC
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| − | |-
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| − | | 0x8200 || 20KC
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| − | |-
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| − | | 0x8400 || 4KEC
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| − | |-
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| − | | 0x8600 || 4KSC
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| − | |-
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| − | | 0x8800 || 25KF
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| − | |-
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| − | | 0x8900 || 5KE
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| − | |-
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| − | | 0x9000 || 4KECR2
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| − | |-
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| − | | 0x9100 || 4KEMPR2
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| − | |-
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| − | | 0x9200 || 4KSD
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| − | |-
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| − | | 0x9300 || 24K
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| − | |-
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| − | | 0x9500 || 34K
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| − | |-
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| − | | 0x9600 || 24KE
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| − | |-
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| − | | 0x9700 || 74K
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| − | |-
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| − | | 0x9900 || 1004K
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| − | |-
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| − | | 0x9a00 || 1074K
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| − | |-
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| − | | 0x9c00 || M14KC
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| − | |-
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| − | | 0x9e00 || M14KEC
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| − | |}
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| − | ==== Sibyte ====
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| − | {| class="wikitable sortable"
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| − | |-
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| − | ! CPU ID !! CPU
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| − | |-
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| − | | 0x0100 || SB1
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| − | |-
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| − | | 0x1100 || SB1A
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| − | |}
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| − | | |
| − | ==== Sandcraft ====
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| − | {| class="wikitable sortable"
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| − | |-
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| − | ! CPU ID !! CPU
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| − | |-
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| − | | 0x0400 || SR71000
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| − | |}
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| − | ==== Broadcom ====
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| − | {| class="wikitable sortable"
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| − | |-
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| − | ! CPU ID !! CPU
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| − | |-
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| − | | 0x4000 || BMIPS32_REV4
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| − | |-
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| − | | 0x8000 || BMIPS32_REV8
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| − | |-
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| − | | 0x9000 || BMIPS3300
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| − | |-
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| − | | 0x9100 || BMIPS3300_ALT
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| − | |-
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| − | | 0x0000 || BMIPS3300_BUG
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| − | |-
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| − | | 0xa000 || BMIPS43XX
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| − | |-
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| − | | 0x5a00 || BMIPS5000
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| − | |}
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| − | | |
| − | ==== Cavium ====
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| − | {| class="wikitable sortable"
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| − | |-
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| − | ! CPU ID !! CPU
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| − | |-
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| − | | 0x0000 || CAVIUM_CN38XX
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| − | |-
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| − | | 0x0100 || CAVIUM_CN31XX
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| − | |-
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| − | | 0x0200 || CAVIUM_CN30XX
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| − | |-
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| − | | 0x0300 || CAVIUM_CN58XX
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| − | |-
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| − | | 0x0400 || CAVIUM_CN56XX
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| − | |-
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| − | | 0x0600 || CAVIUM_CN50XX
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| − | |-
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| − | | 0x0700 || CAVIUM_CN52XX
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| − | |-
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| − | | 0x9000 || CAVIUM_CN63XX
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| − | |-
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| − | | 0x9100 || CAVIUM_CN68XX
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| − | |-
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| − | | 0x9200 || CAVIUM_CN66XX
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| − | |-
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| − | | 0x9300 || CAVIUM_CN61XX
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| − | |-
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| − | | 0x9400 || CAVIUM_CNF71XX
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| − | |-
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| − | | 0x9500 || CAVIUM_CN78XX
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| − | |-
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| − | | 0x9600 || CAVIUM_CN70XX
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| − | |}
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| − | | |
| − | ==== Ingenic ====
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| − | {| class="wikitable sortable"
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| − | |-
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| − | ! CPU ID !! CPU
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| − | |-
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| − | | 0x0200 || JZRISC
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| − | |}
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| − | | |
| − | ==== Netlogic ====
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| − | {| class="wikitable sortable"
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| − | |-
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| − | ! CPU ID !! CPU
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| − | |-
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| − | | 0x0000 || NETLOGIC_XLR732
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| − | |-
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| − | | 0x0200 || NETLOGIC_XLR716
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| − | |-
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| − | | 0x0900 || NETLOGIC_XLR532
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| − | |-
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| − | | 0x0600 || NETLOGIC_XLR308
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| − | |-
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| − | | 0x0800 || NETLOGIC_XLR532C
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| − | |-
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| − | | 0x0a00 || NETLOGIC_XLR516C
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| − | |-
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| − | | 0x0b00 || NETLOGIC_XLR508C
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| − | |-
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| − | | 0x0f00 || NETLOGIC_XLR308C
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| − | |-
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| − | | 0x8000 || NETLOGIC_XLS608
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| − | |-
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| − | | 0x8800 || NETLOGIC_XLS408
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| − | |-
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| − | | 0x8c00 || NETLOGIC_XLS404
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| − | |-
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| − | | 0x8e00 || NETLOGIC_XLS208
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| − | |-
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| − | | 0x8f00 || NETLOGIC_XLS204
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| − | |-
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| − | | 0xce00 || NETLOGIC_XLS108
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| − | |-
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| − | | 0xcf00 || NETLOGIC_XLS104
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| − | |-
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| − | | 0x4000 || NETLOGIC_XLS616B
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| − | |-
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| − | | 0x4a00 || NETLOGIC_XLS608B
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| − | |-
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| − | | 0x4400 || NETLOGIC_XLS416B
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| − | |-
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| − | | 0x4c00 || NETLOGIC_XLS412B
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| − | |-
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| − | | 0x4e00 || NETLOGIC_XLS408B
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| − | |-
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| − | | 0x4f00 || NETLOGIC_XLS404B
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| − | |-
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| − | | 0x8000 || NETLOGIC_AU13XX
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| − | |-
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| − | | 0x1000 || NETLOGIC_XLP8XX
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| − | |-
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| − | | 0x1100 || NETLOGIC_XLP3XX
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| − | |-
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| − | | 0x1200 || NETLOGIC_XLP2XX
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| − | |}
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| − | === Revision ===
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| − | The revision is a manufacturer dependent value which can be used to track silicon revisions.
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| − | | |
| − | == References ==
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| − | {{reflist|30em}}
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| − | | |
| − | [[Category:MIPS]]
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| − | [[Category:MIPS32]]
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| − | [[Category:MIPS register]]
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