This series adds a new CPU uclass which is intended to be useful on any architecture. So far it has a very simple interface and a command to show CPU details.
This series also introduces multi-core init for x86. It is implemented and enabled on Minnowboard MAX, a single/dual-core Atom board. A CPU driver is implemented for generic x86 and Baytrail. The Simple Firmware Interface is used to provide these details to the kernel, since ACPI is not yet available.
With these changes Minnowboard MAX can boot into Linux with both cores enabled.
This series is available at u-boot-x86 branch 'cpu-working'.
Simon Glass (20): Fix comment nits in board_f.c dm: core: Add a function to bind a driver for a device tree node x86: Remove unwanted MMC debugging x86: Disable -Werror Move display_options functions to their own header Add print_freq() to display frequencies nicely x86: Add support for the Simple Firmware Interface (SFI) dm: Implement a CPU uclass Add a 'cpu' command to print CPU information x86: Add atomic operations x86: Add defines for fixed MTRRs x86: Add an mfence macro x86: Store the GDT pointer in global_data x86: Provide access to the IDT x86: Add multi-processor init x86: Add functions to set and clear bits on MSRs x86: Allow CPUs to be set up after relocation x86: Add a CPU driver for baytrail x86: Tidy up the LAPIC init code x86: Enable multi-core init for Minnowboard MAX
arch/x86/Kconfig | 53 ++++ arch/x86/cpu/Makefile | 2 + arch/x86/cpu/baytrail/Makefile | 1 + arch/x86/cpu/baytrail/cpu.c | 206 +++++++++++++ arch/x86/cpu/baytrail/valleyview.c | 1 - arch/x86/cpu/config.mk | 2 +- arch/x86/cpu/cpu.c | 38 +++ arch/x86/cpu/interrupts.c | 5 + arch/x86/cpu/ivybridge/model_206ax.c | 4 +- arch/x86/cpu/lapic.c | 20 +- arch/x86/cpu/mp_init.c | 507 +++++++++++++++++++++++++++++++ arch/x86/cpu/sipi.S | 217 +++++++++++++ arch/x86/dts/minnowmax.dts | 20 ++ arch/x86/include/asm/arch-baytrail/msr.h | 30 ++ arch/x86/include/asm/atomic.h | 115 +++++++ arch/x86/include/asm/cpu.h | 19 ++ arch/x86/include/asm/global_data.h | 1 + arch/x86/include/asm/interrupt.h | 2 + arch/x86/include/asm/lapic.h | 7 - arch/x86/include/asm/mp.h | 94 ++++++ arch/x86/include/asm/msr.h | 19 ++ arch/x86/include/asm/mtrr.h | 14 + arch/x86/include/asm/sipi.h | 79 +++++ arch/x86/include/asm/smm.h | 14 + arch/x86/include/asm/u-boot-x86.h | 2 + arch/x86/lib/Makefile | 1 + arch/x86/lib/sfi.c | 171 +++++++++++ arch/x86/lib/zimage.c | 7 + common/Kconfig | 8 + common/Makefile | 1 + common/board_f.c | 9 +- common/board_r.c | 2 +- common/cmd_cpu.c | 113 +++++++ configs/minnowmax_defconfig | 4 + drivers/Kconfig | 2 + drivers/Makefile | 1 + drivers/core/lists.c | 9 +- drivers/cpu/Kconfig | 8 + drivers/cpu/Makefile | 7 + drivers/cpu/cpu-uclass.c | 61 ++++ include/common.h | 16 +- include/cpu.h | 84 +++++ include/display_options.h | 59 ++++ include/dm/lists.h | 16 + include/dm/uclass-id.h | 1 + include/linux/sfi.h | 139 +++++++++ lib/display_options.c | 54 +++- 47 files changed, 2191 insertions(+), 54 deletions(-) create mode 100644 arch/x86/cpu/baytrail/cpu.c create mode 100644 arch/x86/cpu/mp_init.c create mode 100644 arch/x86/cpu/sipi.S create mode 100644 arch/x86/include/asm/arch-baytrail/msr.h create mode 100644 arch/x86/include/asm/atomic.h create mode 100644 arch/x86/include/asm/mp.h create mode 100644 arch/x86/include/asm/sipi.h create mode 100644 arch/x86/include/asm/smm.h create mode 100644 arch/x86/lib/sfi.c create mode 100644 common/cmd_cpu.c create mode 100644 drivers/cpu/Kconfig create mode 100644 drivers/cpu/Makefile create mode 100644 drivers/cpu/cpu-uclass.c create mode 100644 include/cpu.h create mode 100644 include/display_options.h create mode 100644 include/linux/sfi.h