Hi Miao, On Tue, Jan 12, 2016 at 10:04 AM, Miao Yan <yanmiaob...@gmail.com> wrote: > Hi Bin, > > 2016-01-07 17:31 GMT+08:00 Miao Yan <yanmiaob...@gmail.com>: >> The fw_cfg interface provided by QEMU allow guests to retrieve various >> information >> about the system, e.g. cpu number, variaous firmware data, kernel setup, >> etc. The >> fw_cfg interface can be accessed through 3 IO ports (on x86), using x86 >> in/out >> instructions. >> >> - 0x510: select configuration items to access >> - 0x511: reading this port will return data selected in 0x510 >> - 0x514: this can be used to detect if DMA interface is available >> >> If fw_cfg DMA interface is available, it can be used to accelerate >> accesses. >> >> This patchset adds the following supports for qemu-x86 targets: >> >> + the fw_cfg driver itself >> >> + add a U-Boot command 'fw' to support direct accessing kernel informtion >> from fw_cfg interface, this saves the time of loading them from hard >> disk or >> network again, through emulated devices. >> >> + use fw_cfg to get cpu number at runtime, so smp boot no longer relies on >> the cpu node hard-coded in dts files. >> >> Changes in v6: >> - fix oneline comment >> - do not update bootargs when kernel cmdline only contains '\0' >> >> Miao Yan (8): >> x86: adjust ramdisk load address >> x86: qemu: add fw_cfg support >> x86: qemu: add a cpu uclass driver for qemu target >> x86: fix a typo in function name >> x86: use actual CPU number for allocating memory >> x86: qemu: fix cpu device in smp boot >> x86: qemu: remove cpu node in device tree >> x86: qemu: add documentaion for the fw_cfg interface >> >> arch/x86/cpu/mp_init.c | 84 +++++++++++- >> arch/x86/cpu/qemu/Makefile | 2 +- >> arch/x86/cpu/qemu/cpu.c | 46 +++++++ >> arch/x86/cpu/qemu/fw_cfg.c | 283 >> +++++++++++++++++++++++++++++++++++++++ >> arch/x86/cpu/qemu/qemu.c | 3 + >> arch/x86/dts/qemu-x86_i440fx.dts | 9 +- >> arch/x86/dts/qemu-x86_q35.dts | 9 +- >> arch/x86/include/asm/fw_cfg.h | 93 +++++++++++++ >> doc/README.x86 | 34 ++++- >> include/configs/x86-common.h | 3 +- >> 10 files changed, 539 insertions(+), 27 deletions(-) >> create mode 100644 arch/x86/cpu/qemu/cpu.c >> create mode 100644 arch/x86/cpu/qemu/fw_cfg.c >> create mode 100644 arch/x86/include/asm/fw_cfg.h >> >> -- >> 1.9.1 >> > > Is v6 OK for integration ? Thanks.
Yes, will be applied soon. Regards, Bin _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
