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| author | Huacai Chen <chenhc@lemote.com> | 2014-03-21 18:43:59 +0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-03-31 18:17:12 +0200 |
| commit | 152ebb44eff3c2dae0fb7d5b19c3f65e7c8d3493 (patch) | |
| tree | 3b88dc5ef2a1af4b22a55433d4bbbd7f10db9eb3 /arch/mips/include/asm/mach-loongson | |
| parent | d6d3c9afaab47418ab2d7f874fb8aeac1f067104 (diff) | |
| download | linux-152ebb44eff3c2dae0fb7d5b19c3f65e7c8d3493.tar.gz linux-152ebb44eff3c2dae0fb7d5b19c3f65e7c8d3493.tar.bz2 linux-152ebb44eff3c2dae0fb7d5b19c3f65e7c8d3493.zip | |
MIPS: Loongson: Add basic Loongson-3 definition
Loongson-3 is a multi-core MIPS family CPU, it support MIPS64R2 fully.
Loongson-3 has the same IMP field (0x6300) as Loongson-2.
Loongson-3 has a hardware-maintained cache, system software doesn't
need to maintain coherency.
Loongson-3A is the first revision of Loongson-3, and it is the quad-
core version of Loongson-2G. Loongson-3A has a simplified version named
Loongson-2Gq, the main difference between Loongson-3A/2Gq is 3A has two
HyperTransport controller but 2Gq has only one. HT0 is used for cross-
chip interconnection and HT1 is used to link PCI bus. Therefore, 2Gq
cannot support NUMA but 3A can. For software, Loongson-2Gq is simply
identified as Loongson-3A.
Exsisting Loongson family CPUs:
Loongson-1: Loongson-1A, Loongson-1B, they are 32-bit MIPS CPUs.
Loongson-2: Loongson-2E, Loongson-2F, Loongson-2G, they are 64-bit
single-core MIPS CPUs.
Loongson-3: Loongson-3A(including so-called Loongson-2Gq), they are
64-bit multi-core MIPS CPUs.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Hongliang Tao <taohl@lemote.com>
Signed-off-by: Hua Yan <yanh@lemote.com>
Tested-by: Alex Smith <alex.smith@imgtec.com>
Reviewed-by: Alex Smith <alex.smith@imgtec.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/6629/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/mach-loongson')
| -rw-r--r-- | arch/mips/include/asm/mach-loongson/spaces.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-loongson/spaces.h b/arch/mips/include/asm/mach-loongson/spaces.h new file mode 100644 index 000000000000..e2506ee90044 --- /dev/null +++ b/arch/mips/include/asm/mach-loongson/spaces.h @@ -0,0 +1,9 @@ +#ifndef __ASM_MACH_LOONGSON_SPACES_H_ +#define __ASM_MACH_LOONGSON_SPACES_H_ + +#if defined(CONFIG_64BIT) +#define CAC_BASE _AC(0x9800000000000000, UL) +#endif /* CONFIG_64BIT */ + +#include <asm/mach-generic/spaces.h> +#endif |