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== Overview == | == Overview == | ||
{{main|loongson/microarchitectures/gs464|l1=GS464 µarch}} | {{main|loongson/microarchitectures/gs464|l1=GS464 µarch}} | ||
| − | The Godson 2 family of microprocessors started out in [[2002]] by the [[Institute of Computing Technology of the Chinese Academy of Sciences]] (ICT) after the successful design of the first {{\\|Godson 1}}. The Godson 2 series is based on a more ambitious goal with high efficiency and high performance in mind. Godson 2 processors are designed as general purpose {{arch|64}} [[MIPS64]]-like processors. At the time they were marketed as "MIPS-like" due to not having a proper license from [[MIPS Technologies]]. | + | The Godson 2 family of microprocessors started out in [[2002]] by the [[Institute of Computing Technology of the Chinese Academy of Sciences]] (ICT) after the successful design of the first {{\\|Godson 1}}. The Godson 2 series is based on a more ambitious goal with high efficiency and high performance in mind. Godson 2 processors are designed as general purpose {{arch|64}} [[MIPS64]]-like processors. At the time they were marketed as "MIPS-like" due to not having a proper license from [[MIPS Technologies]]. A number of patented instructions were also omitted from the [[ISA]] for this reason. In August 2011 [[Loongson Technology]] officially licensed the [[MIPS32]] and [[MIPS64]] architectures from [[MIPS Technologies]] allowing them to label the chips as "MIPS-compatible". |
| − | The first Godson 2, model {{\|2B}} which was introduced in 2003, became [[ | + | The first Godson 2, model {{\|2B}} which was introduced in 2003, became [[China]]'s first {{arch|64}} microprocessor. This model was fabricated using 6-metal [[0.18 µm process]] using [[CMOS]] technology. |
The next few successors introduced incrementally better clock speeds (doubling with each model) along with a larger cache and improved [[branch predictor]]s for triple the performance improvement each time. With the introduction of the {{\|2E}}, ICT reached 1 GHz clock frequency. This was the first such achievement for an entirely Chinese-based design. Those models were all manufactured on [[SMICS]]'s [[0.18 µm process]] as well. | The next few successors introduced incrementally better clock speeds (doubling with each model) along with a larger cache and improved [[branch predictor]]s for triple the performance improvement each time. With the introduction of the {{\|2E}}, ICT reached 1 GHz clock frequency. This was the first such achievement for an entirely Chinese-based design. Those models were all manufactured on [[SMICS]]'s [[0.18 µm process]] as well. | ||
| − | In | + | In October 2006, Loongson signed a strategic agreement with [[STMicroelectronics]] to fabricate the Godson chips. Later models started using ST's [[90 nm process]] followed by [[65 nm]]. |
The introduction of the {{\|2E}} brought about higher integration with the introduction of an on-die [[northbridge]], incorporating a DDR1 memory controller. With the launch of the {{\|2F}} in 2008, ICT improved their integrated memory controller capabilities and started integrating some components of the [[southbridge]] as well ([[HyperTransport]], [[PCI]]/[[PCI-E]]). | The introduction of the {{\|2E}} brought about higher integration with the introduction of an on-die [[northbridge]], incorporating a DDR1 memory controller. With the launch of the {{\|2F}} in 2008, ICT improved their integrated memory controller capabilities and started integrating some components of the [[southbridge]] as well ([[HyperTransport]], [[PCI]]/[[PCI-E]]). | ||
Latest revision as of 16:11, 11 April 2017
| Godson 2 | |
| |
| Godson 2 | |
| Developer | Institute of Computing Technology of the Chinese Academy of Sciences, Loongson |
| Manufacturer | STMicroelectronics, SMICS |
| Type | Microprocessors |
| Introduction | 2003 (announced) October 17, 2003 (launch) |
| Architecture | 64-bit MIPS processors |
| ISA | MIPS64 |
| µarch | GS464 |
| Word size | 64 bit 8 octets
16 nibbles |
| Process | 180 nm 0.18 μm , 130 nm1.8e-4 mm 0.13 μm , 90 nm1.3e-4 mm 0.09 μm , 65 nm9.0e-5 mm 0.065 μm
6.5e-5 mm |
| Technology | CMOS |
| Clock | 250 MHz-1,000 MHz |
| Succession | |
| ← | → |
| Godson 1 | Godson 3 |
Godson 2 (龍芯２) is a family of 64-bit MIPS low-power performance desktop processors developed by the Institute of Computing Technology of the Chinese Academy of Sciences (ICT) in 2003. The Godson 2 processors are now developed by Loongson Technology (which was co-founded by ICT) and sold as low-power embedded and desktop processors. The Godson 2 is famous for being the first Chinese developed 64-bit microprocessors as well as the first Chinese processors to break the gigahertz frequency.
Overview[edit]
- Main article: GS464 µarch
The Godson 2 family of microprocessors started out in 2002 by the Institute of Computing Technology of the Chinese Academy of Sciences (ICT) after the successful design of the first Godson 1. The Godson 2 series is based on a more ambitious goal with high efficiency and high performance in mind. Godson 2 processors are designed as general purpose 64-bit MIPS64-like processors. At the time they were marketed as "MIPS-like" due to not having a proper license from MIPS Technologies. A number of patented instructions were also omitted from the ISA for this reason. In August 2011 Loongson Technology officially licensed the MIPS32 and MIPS64 architectures from MIPS Technologies allowing them to label the chips as "MIPS-compatible".
The first Godson 2, model 2B which was introduced in 2003, became China's first 64-bit microprocessor. This model was fabricated using 6-metal 0.18 µm process using CMOS technology.
The next few successors introduced incrementally better clock speeds (doubling with each model) along with a larger cache and improved branch predictors for triple the performance improvement each time. With the introduction of the 2E, ICT reached 1 GHz clock frequency. This was the first such achievement for an entirely Chinese-based design. Those models were all manufactured on SMICS's 0.18 µm process as well.
In October 2006, Loongson signed a strategic agreement with STMicroelectronics to fabricate the Godson chips. Later models started using ST's 90 nm process followed by 65 nm.
The introduction of the 2E brought about higher integration with the introduction of an on-die northbridge, incorporating a DDR1 memory controller. With the launch of the 2F in 2008, ICT improved their integrated memory controller capabilities and started integrating some components of the southbridge as well (HyperTransport, PCI/PCI-E).
In 2011 Loongson introduced their first complete system-on-chip, the 2H. The chip incorporated both the northbridge, southbridge (integrating things such as PCIe, SATA, and a USB controller), and a licensed low-power Vivante GC800 GPU. The 2H is based on Loongson's GS464V architecture which incorporates the MIPS SIMD extension. The 2G can serve as a standalone SoC powering low-power nettops and tablets or in slave mode, serving as a complete chipset solution to the more power Godson 3 series of processors.
Godson 2 processors can be found in many low end laptops and embedded hardware manufactured by Lemote Technology.
Members[edit]
| List of Godson-2 Processors | ||||||||
|---|---|---|---|---|---|---|---|---|
| Processor | IGP | |||||||
| Model | Launched | Process | Frequency | L1$ | L2$ | Power | Name | Frequency |
| 2A | 180 nm 0.18 μm 1.8e-4 mm | 250 MHz 0.25 GHz 250,000 kHz | 64 KiB 65,536 B 0.0625 MiB | 3 W 3,000 mW 0.00402 hp 0.003 kW | ||||
| 2B | 17 October 2003 | 180 nm 0.18 μm 1.8e-4 mm | 300 MHz 0.3 GHz 300,000 kHz | 64 KiB 65,536 B 0.0625 MiB | 3 W 3,000 mW 0.00402 hp 0.003 kW | |||
| 2B1 | March 2004 | 180 nm 0.18 μm 1.8e-4 mm | 400 MHz 0.4 GHz 400,000 kHz | 64 KiB 65,536 B 0.0625 MiB | 4 W 4,000 mW 0.00536 hp 0.004 kW | |||
| 2C | 28 September 2004 | 180 nm 0.18 μm 1.8e-4 mm | 500 MHz 0.5 GHz 500,000 kHz | 128 KiB 131,072 B 0.125 MiB | 5 W 5,000 mW 0.00671 hp 0.005 kW | |||
| 2D | 2006 | 130 nm 0.13 μm 1.3e-4 mm | 700 MHz 0.7 GHz 700,000 kHz | 128 KiB 131,072 B 0.125 MiB | 5 W 5,000 mW 0.00671 hp 0.005 kW | |||
| 2D1 | 2006 | 130 nm 0.13 μm 1.3e-4 mm | 800 MHz 0.8 GHz 800,000 kHz | 128 KiB 131,072 B 0.125 MiB | 6 W 6,000 mW 0.00805 hp 0.006 kW | |||
| 2E | 18 March 2006 | 90 nm 0.09 μm 9.0e-5 mm | 1,000 MHz 1 GHz 1,000,000 kHz | 128 KiB 131,072 B 0.125 MiB | 512 KiB 0.5 MiB 524,288 B 4.882812e-4 GiB | 7 W 7,000 mW 0.00939 hp 0.007 kW | ||
| 2F | June 2008 | 90 nm 0.09 μm 9.0e-5 mm | 800 MHz 0.8 GHz 800,000 kHz | 128 KiB 131,072 B 0.125 MiB | 512 KiB 0.5 MiB 524,288 B 4.882812e-4 GiB | 5 W 5,000 mW 0.00671 hp 0.005 kW | ||
| 2G | November 2010 | 65 nm 0.065 μm 6.5e-5 mm | 1,000 MHz 1 GHz 1,000,000 kHz | 128 KiB 131,072 B 0.125 MiB | 1,024 KiB 1 MiB 1,048,576 B 9.765625e-4 GiB | 3 W 3,000 mW 0.00402 hp 0.003 kW | ||
| 2H | March 2011 | 65 nm 0.065 μm 6.5e-5 mm | 1,000 MHz 1 GHz 1,000,000 kHz | 128 KiB 131,072 B 0.125 MiB | 512 KiB 0.5 MiB 524,288 B 4.882812e-4 GiB | 10 W 10,000 mW 0.0134 hp 0.01 kW | GC800 | 400 MHz 0.4 GHz 400,000 KHz |
| Count: 10 | ||||||||
| designer | Institute of Computing Technology of the Chinese Academy of Sciences + and Loongson + |
| first announced | 2003 + |
| first launched | October 17, 2003 + |
| full page name | loongson/godson 2 + |
| instance of | microprocessor family + |
| instruction set architecture | MIPS64 + |
| main designer | Institute of Computing Technology of the Chinese Academy of Sciences + |
| manufacturer | STMicroelectronics + and SMICS + |
| microarchitecture | GS464 + |
| name | Godson 2 + |
| process | 180 nm (0.18 μm, 1.8e-4 mm) +, 130 nm (0.13 μm, 1.3e-4 mm) +, 90 nm (0.09 μm, 9.0e-5 mm) + and 65 nm (0.065 μm, 6.5e-5 mm) + |
| technology | CMOS + |
| word size | 64 bit (8 octets, 16 nibbles) + |