Hello Libreboot Devs, I'm not sure if this fits in with user support mailing list, but here is goes. I'm a software engineering graduate. I have some software programming experience but a newbie in hardware. I read some wiki on coreboot about chipset and firmware but still couldn't get the idea. From libreboot's info page I learnt that recent Intel cpus are impossible to support as they used various sign techniques. While it also stated that libreboot has interest in Intel Atom cpu, currently I'm using a HP stream 360 11 laptop, which seems containing 'Atom' processor, but the cpu is celeron n2840. I'm wondering if this modal is possible to be supported by coreboot or even libreboot, if so, I may be able to start learning the porting stuff by studying this modal, through I currently don't quite get the details about chipset/firmware/microcode/northbridge chip/hardware initialization concepts. Anyway, here is some info regarding my hardware: Handle 0x0000, DMI type 0, 24 bytes BIOS Information Vendor: Insyde Version: F.04 Release Date: 03/02/2015 Address: 0xF0000 Runtime Size: 64 kB ROM Size: 4608 kB Characteristics: PCI is supported BIOS is upgradeable BIOS shadowing is allowed Boot from CD is supported Selectable boot is supported EDD is supported 8042 keyboard services are supported (int 9h) Serial services are supported (int 14h) Printer services are supported (int 17h) CGA/mono video services are supported (int 10h) ACPI is supported USB legacy is supported ATAPI Zip drive boot is supported BIOS boot specification is supported Function key-initiated network boot is supported Targeted content distribution is supported BIOS Revision: 15.4 Firmware Revision: 57.16
Handle 0x0001, DMI type 1, 27 bytes System Information Manufacturer: Hewlett-Packard Product Name: HP Stream x360 Convertible PC 11 Version: Type1 - ProductConfigId Serial Number: 3CE5241VN0 UUID: E8B68056-FC0B-E511-A26A-308D99CA2127 Wake-up Type: Power Switch SKU Number: M5H50UAR#ABA Family: 103C_5335KV G=N L=CON B=HP S=PAV X=MIN Handle 0x0002, DMI type 2, 17 bytes Base Board Information Manufacturer: Hewlett-Packard Product Name: 802B Version: 57.16 Serial Number: PETTQG2WV8TQNP Asset Tag: Type2 - Board Asset Tag Features: Board is a hosting board Board is replaceable Location In Chassis: Type2 - Board Chassis Location Chassis Handle: 0x0003 Type: Motherboard Contained Object Handles: 0 Handle 0x0003, DMI type 3, 24 bytes Chassis Information Manufacturer: Hewlett-Packard Type: Notebook Lock: Not Present Version: Chassis Version Serial Number: Chassis Serial Number Asset Tag: Chassis Asset Tag Boot-up State: Safe Power Supply State: Safe Thermal State: Safe Security Status: None OEM Information: 0x0000010E Height: Unspecified Number Of Power Cords: 1 Contained Elements: 0 SKU Number: Not Specified Handle 0x0004, DMI type 4, 42 bytes Processor Information Socket Designation: CPU 1 Type: Central Processor Family: Atom Manufacturer: Intel(R) Corporation ID: 78 06 03 00 FF FB EB BF Signature: Type 0, Family 6, Model 55, Stepping 8 Flags: FPU (Floating-point unit on-chip) VME (Virtual mode extension) DE (Debugging extension) PSE (Page size extension) TSC (Time stamp counter) MSR (Model specific registers) PAE (Physical address extension) MCE (Machine check exception) CX8 (CMPXCHG8 instruction supported) APIC (On-chip APIC hardware supported) SEP (Fast system call) MTRR (Memory type range registers) PGE (Page global enable) MCA (Machine check architecture) CMOV (Conditional move instruction supported) PAT (Page attribute table) PSE-36 (36-bit page size extension) CLFSH (CLFLUSH instruction supported) DS (Debug store) ACPI (ACPI supported) MMX (MMX technology supported) FXSR (FXSAVE and FXSTOR instructions supported) SSE (Streaming SIMD extensions) SSE2 (Streaming SIMD extensions 2) SS (Self-snoop) HTT (Multi-threading) TM (Thermal monitor supported) PBE (Pending break enabled) Version: Intel(R) Celeron(R) CPU N2840 @ 2.16GHz Voltage: 0.9 V External Clock: 83 MHz Max Speed: 2573 MHz Current Speed: 2176 MHz Status: Populated, Enabled Upgrade: None L1 Cache Handle: 0x0006 L2 Cache Handle: 0x0007 L3 Cache Handle: Not Provided Serial Number: Not Specified Asset Tag: Not Specified Part Number: Not Specified Core Count: 2 Core Enabled: 2 Thread Count: 1 Characteristics: 64-bit capable Multi-Core Execute Protection Enhanced Virtualization Power/Performance Control
