linux-dev/arch/mips/loongson64/Makefile, branch master

MIPS: Loongson64: Remove unused sysconf members

2021-03-12T10:09:09Z

We don't need them anymore, They are uniform on all Loongson64 systems and have been fixed in DeviceTree.loongson3_platform_init is replaced with DTS + driver. Signed-off-by: Jiaxun Yang Signed-off-by: Qing Zhang Acked-by: Jiaxun Yang Signed-off-by: Thomas Bogendoerfer

MIPS: Loongson64: Add /sys/firmware/lefi/boardinfo

2020-10-27T11:46:06Z

Add /sys/firmware/lefi/boardinfo to get mainboard and BIOS info easily on the Loongson platform, this is useful to point out the current used mainboard type and BIOS version when there exists problems related with hardware or firmware. The related structures are already defined in the interface specification about firmware and kernel which are common requirement and specific for Loongson64, so only add a new boardinfo.c file in arch/mips/loongson64. E.g. with this patch: [loongson@linux ~]$ cat /sys/firmware/lefi/boardinfo Board Info Manufacturer : LEMOTE Board Name : LEMOTE-LS3A4000-7A1000-1w-V01-pc Family : LOONGSON3 BIOS Info Vendor : Kunlun Version : Kunlun-A1901-V4.1.3-20200414093938 ROM Size : 4 KB Release Date : 2020-04-14 By the way, using dmidecode command can get the similar info if there exists SMBIOS in firmware, but the fact is that there is no SMBIOS on some machines, we can see nothing when execute dmidecode, like this: [root@linux loongson]# dmidecode # dmidecode 2.12 # No SMBIOS nor DMI entry point found, sorry. Signed-off-by: Tiezhu Yang Signed-off-by: Thomas Bogendoerfer

MIPS: Loongson64: Switch to generic PCI driver

2020-05-27T11:01:56Z

We can now enable generic PCI driver in Kconfig, and remove legacy PCI driver code. Radeon vbios quirk is moved to the platform folder to fit the new structure. Signed-off-by: Jiaxun Yang Signed-off-by: Thomas Bogendoerfer

MIPS: emulate CPUCFG instruction on older Loongson64 cores

2020-05-24T07:26:55Z

CPUCFG is the instruction for querying processor characteristics on newer Loongson processors, much like CPUID of x86. Since the instruction is supposedly designed to provide a unified way to do feature detection (without having to, for example, parse /proc/cpuinfo which is too heavyweight), it is important to provide compatibility for older cores without native support. Fortunately, most of the fields can be synthesized without changes to semantics. Performance is not really big a concern, because feature detection logic is not expected to be invoked very often in typical userland applications. The instruction can't be emulated on LOONGSON_2EF cores, according to FlyGoat's experiments. Because the LWC2 opcode is assigned to other valid instructions on 2E and 2F, no RI exception is raised for us to intercept. So compatibility is only extended back furthest to Loongson-3A1000. Loongson-2K is covered too, as it is basically a remix of various blocks from the 3A/3B models from a kernel perspective. This is lightly based on Loongson's work on their Linux 3.10 fork, for being the authority on the right feature flags to fill in, where things aren't otherwise discoverable. Signed-off-by: WANG Xuerui Reviewed-by: Jiaxun Yang Cc: Huacai Chen Cc: Jiaxun Yang Cc: Tiezhu Yang Signed-off-by: Thomas Bogendoerfer

MIPS: Loongson64: Make RS780E ACPI as a platform driver

2020-04-20T17:36:40Z

Make RS780E ACPI as a platform driver so we can enable it by DeviceTree selectively. Signed-off-by: Jiaxun Yang Signed-off-by: Thomas Bogendoerfer

MIPS: Loongson64: Remove dead RTC code

2020-04-20T17:36:21Z

RTC is now enabled by devicetree. So platform code is no longer needed. Signed-off-by: Jiaxun Yang Signed-off-by: Thomas Bogendoerfer

MIPS: Loongson64: Drop legacy IRQ code

2020-03-25T15:07:11Z

We've made generic irqchip drivers for Loongson-3 platform, it's time to say goodbye to these legacy code. Signed-off-by: Jiaxun Yang Co-developed-by: Huacai Chen Signed-off-by: Huacai Chen Signed-off-by: Thomas Bogendoerfer

MIPS: Loongson{2ef, 32, 64} convert to generic fw cmdline

2019-11-11T18:44:56Z

All of Loongson firmwares are passing boot cmdline/env in the manner of YAMON/PMON. Thus we can remove duplicated cmdline initialize code and convert to generic fw method. Signed-off-by: Jiaxun Yang Signed-off-by: Paul Burton Cc: linux-mips@vger.kernel.org Cc: chenhe@lemote.com

MIPS: Loongson64: Move files to the top-level directory

2019-11-01T21:31:28Z

Current Loongson-3 code can share among all Loongson64 processors. Signed-off-by: Jiaxun Yang Signed-off-by: Paul Burton Cc: linux-mips@vger.kernel.org Cc: chenhc@lemote.com Cc: paul.burton@mips.com

MIPS: Fork loongson2ef from loongson64

2019-11-01T21:30:52Z

As later model of GSx64 family processors including 2-series-soc have similar design with initial loongson3a while loongson2e/f seems less identical, we separate loongson2e/f support code out of mach-loongson64 to make our life easier. This patch contains mostly file moving works. Signed-off-by: Jiaxun Yang [paulburton@kernel.org: Squash in the MAINTAINERS updates] Signed-off-by: Paul Burton Cc: linux-mips@vger.kernel.org Cc: paul.burton@mips.com