macro about loongson's CPU & SoC
Hello, I find there are some macros about loongson's CPU and SoC,
$ vim barebox/arch/mips/Kconfig
174 config CPU_LOONGSON1B
175 bool "Loongson 1B" 176 depends on SYS_HAS_CPU_LOONGSON1B 177 select CPU_LOONGSON1 178 help
179 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
180 release 2 instruction set.
Here I want to list some Chips from this page:
http://www.loongson.cn/product/
NAME CPU Core(s)
The loongson 3, for series/server & desktop
3A3000/3B3000 GS464E 64bit x4 3A2000/3B2000 GS464E 64bit x4 3B1500 GS464 64bit x8 3A1000 GS464 64bit x4
The loongson 2, for series/low power
2K1000 GS264 64bit x2 2F GS464 64bit x1 2H GS464 64bit x1
The loongson 1, for series/embeded
1C101 GS132R 32bit ? 1D GS132 32bit ? 1C GS232 32bit x1 1B GS232 32bit x1 <-- loongson 1b 1A GS232 32bit x1
the CPU name of LOONGSON1B is socalled GS232, shall we
change CPU_LOONGSON1 to CPU_GS232?
here is a introduce for GS232 in Chinese:
- - - -
龙芯 232 核是一款实现 MIPS32 兼容且支持 EJTAG 调试的双发射处理器，通过采用转移 预测、寄存器重命名、乱序发射、路预测的指令 CACHE、非阻塞的数据 CACHE、写合并收集 等技术来提高流水线的效率。
- - - -
base on this description, is it compact with MIPS32.
for loongson's other cores, shall we define some macro:
CONFIG_CPU_GS232 CONFIG_CPU_GS264 CONFIG_CPU_GS464
Regards,
duhuanpeng
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Quoted 47 lines · On Tue, 26 Nov 2019 19:57:50 +0800 Du Huanpeng <[email protected]> wrote:
Hello, I find there are some macros about loongson's CPU and SoC,
$ vim barebox/arch/mips/Kconfig174 config
CPU_LOONGSON1B175 bool "Loongson 1B" 176 depends on SYS_HAS_CPU_LOONGSON1B 177 select CPU_LOONGSON1 178 help179 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
180 release 2 instruction set.Here I want to list some Chips from this page:
http://www.loongson.cn/product/NAME CPU Core(s)
The loongson 3, for series/server & desktop
3A3000/3B3000 GS464E 64bit x4 3A2000/3B2000 GS464E 64bit x4 3B1500 GS464 64bit x8 3A1000 GS464 64bit x4The loongson 2, for series/low power
2K1000 GS264 64bit x2 2F GS464 64bit x1 2H GS464 64bit x1The loongson 1, for series/embeded
1C101 GS132R 32bit ? 1D GS132 32bit ? 1C GS232 32bit x1 1B GS232 32bit x1 <-- loongson 1b 1A GS232 32bit x1the CPU name of LOONGSON1B is socalled GS232, shall we
change
CPU_LOONGSON1toCPU_GS232?here is a introduce for GS232 in Chinese:
- - - -
龙芯 232 核是一款实现 MIPS32 兼容且支持 EJTAG 调试的双发射处理器，通过采用转移 预测、寄存器重命名、乱序发射、路预测的指令 CACHE、非阻塞的数据 CACHE、写合并收集 等技术来提高流水线的效率。
- - - -
base on this description, is it compact with MIPS32.
Quoted 6 lines
for loongson's other cores, shall we define some macro:
CONFIG_CPU_GS232 CONFIG_CPU_GS264 CONFIG_CPU_GS464
The name CPU_LOONGSON1B is used in the linux kernel. Please keep barebox macro name in sync with linux kernel.
Signature · 7 lines
Best regards, Antony Pavlov _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
Quoted 2 lines
The name
CPU_LOONGSON1Bis used in the linux kernel. Please keep barebox macro name in sync with linux kernel.
shall we use the rules in a "balanced" way? :)
the name CPU_LOONGSON1B is used in the kernel, it is true. if you dive into the source tree, you will find more~
in bootloader, do we need so many kinds of CPU, are they realy different? two or three ISA set(CPU) is enough for loongson's chip(see the table in my last mail) to run barebox.
Regards,
duhuanpeng
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Quoted 10 lines · Du Huanpeng
Quoted 2 lines
The name
CPU_LOONGSON1Bis used in the linux kernel. Please keep barebox macro name in sync with linux kernel.shall we use the rules in a "balanced" way? :)
the name
CPU_LOONGSON1Bis used in the kernel, it is true. if you dive into the source tree, you will find more~in bootloader, do we need so many kinds of CPU, are they realy different? two or three ISA set(CPU) is enough for loongson's chip(see the table in my last mail) to run barebox.
It's probably least confusing to stick with the kernel here. If you want to map these symbols to two or three ISA sets you actually need then this is fine.
Sascha
Signature · 9 lines
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Hi, the loongson macros in the linux kernel are being clean up.
https://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git/commit/?id=caed1d1b20cbf7ecf7e8be629fd593c96c8ff2d2
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