OLPC XO-1 and T2/Linux
The OLPC XO, previously known as the $100 Laptop, is an inexpensive laptop computer intended to be distributed to children in developing countries around the world.
Notes
For a fully free and open software stack it is using an OpenFirmware on x86 instead of a regular, classic PC BIOS.
/proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 5
model : 10
model name : Geode(TM) Integrated Processor by AMD PCS
stepping : 2
cpu MHz : 430.964
cache size : 128 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu de pse tsc msr cx8 sep pge cmov clflush mmx mmxext 3dnowext 3dnow
bogomips : 862.98
clflush size : 32
vendor_id : AuthenticAMD
cpu family : 5
model : 10
model name : Geode(TM) Integrated Processor by AMD PCS
stepping : 2
cpu MHz : 430.964
cache size : 128 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu de pse tsc msr cx8 sep pge cmov clflush mmx mmxext 3dnowext 3dnow
bogomips : 862.98
clflush size : 32
lspci
00:01.0 Host bridge: Advanced Micro Devices [AMD] Unknown device 0028 (rev 21)
00:01.1 VGA compatible controller: Advanced Micro Devices [AMD] Geode LX Video
00:01.2 Entertainment encryption device: Advanced Micro Devices [AMD] Geode LX AES Security Block
00:0c.0 FLASH memory: Marvell Technology Group Ltd. Unknown device 4100 (rev 10)
00:0c.1 Generic system peripheral [0805]: Marvell Technology Group Ltd. Unknown device 4101 (rev 10)
00:0c.2 Multimedia video controller: Marvell Technology Group Ltd. Unknown device 4102 (rev 10)
00:0f.0 ISA bridge: Advanced Micro Devices [AMD] CS5536 [Geode companion] ISA (rev 03)
00:0f.3 Multimedia audio controller: Advanced Micro Devices [AMD] CS5536 [Geode companion] Audio (rev 01)
00:0f.4 USB Controller: Advanced Micro Devices [AMD] CS5536 [Geode companion] OHC (rev 02)
00:0f.5 USB Controller: Advanced Micro Devices [AMD] CS5536 [Geode companion] EHC (rev 02)
00:01.1 VGA compatible controller: Advanced Micro Devices [AMD] Geode LX Video
00:01.2 Entertainment encryption device: Advanced Micro Devices [AMD] Geode LX AES Security Block
00:0c.0 FLASH memory: Marvell Technology Group Ltd. Unknown device 4100 (rev 10)
00:0c.1 Generic system peripheral [0805]: Marvell Technology Group Ltd. Unknown device 4101 (rev 10)
00:0c.2 Multimedia video controller: Marvell Technology Group Ltd. Unknown device 4102 (rev 10)
00:0f.0 ISA bridge: Advanced Micro Devices [AMD] CS5536 [Geode companion] ISA (rev 03)
00:0f.3 Multimedia audio controller: Advanced Micro Devices [AMD] CS5536 [Geode companion] Audio (rev 01)
00:0f.4 USB Controller: Advanced Micro Devices [AMD] CS5536 [Geode companion] OHC (rev 02)
00:0f.5 USB Controller: Advanced Micro Devices [AMD] CS5536 [Geode companion] EHC (rev 02)
lsusb
Bus 003 Device 003: ID 1286:2001 MARVELL Wireless Device
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub