User:A faerber/SK-FM4-176L-S6E2CC
Linux port
First presented at LinuxCon Japan 2015: Pushing the limits of Linux on ARM (slide 20)
Note that openSUSE will not run on this board as it is an ARMv7-M microcontroller.
Bootloader
Kernel
https://github.com/afaerber/linux/commits/fm4
Implemented based on next-20150521 (4.1.0-rc4):
- mach-fm4
- low-level debug support
- Device Tree
- clocksource driver
[ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 4.1.0-rc4-next-20150521+ (andreas@envy.lan) (gcc version 4.9.3 20150303 (release) [ARM/embedded-4_9-branch revision 221220] (GNU Tools for ARM Embedded Processors) ) #12 PREEMPT Thu Jul 2 04:47:53 CEST 2015 [ 0.000000] CPU: ARMv7-M [410fc241] revision 1 (ARMv7M), cr=00000000 [ 0.000000] CPU: unknown data cache, unknown instruction cache [ 0.000000] Machine model: Spansion SK-FM4-176L-S6E2CC [ 0.000000] bootconsole [earlycon0] enabled [ 0.000000] Built 1 zonelists in Zone order, mobility grouping off. Total pages: 508 [ 0.000000] Kernel command line: earlyprintk [ 0.000000] PID hash table entries: 16 (order: -6, 64 bytes) [ 0.000000] Dentry cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.000000] Inode-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.000000] Memory: 1832K/2048K available (752K kernel code, 37K rwdata, 228K rodata, 49K init, 89K bss, 216K reserved, 0K cma-reserved) [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0x00000000 - 0x00001000 ( 4 kB) [ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB) [ 0.000000] vmalloc : 0x00000000 - 0xffffffff (4095 MB) [ 0.000000] lowmem : 0x60000000 - 0x60200000 ( 2 MB) [ 0.000000] .text : 0x00004000 - 0x000fa408 ( 986 kB) [ 0.000000] .init : 0x6000a000 - 0x6000d000 ( 12 kB) [ 0.000000] .data : 0x60008000 - 0x60014860 ( 51 kB) [ 0.000000] .bss : 0x60014860 - 0x6002ae18 ( 90 kB) [ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.000000] Preemptible hierarchical RCU implementation. [ 0.000000] Additional per-CPU info printed with stalls. [ 0.000000] Build-time adjustment of leaf fanout to 32. [ 0.000000] NR_IRQS:16 nr_irqs:16 16 [ 0.000000] clocksource arm_system_timer: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 37329303 ns [ 0.000000] ARM System timer initialized as clocksource [ 0.000000] Dual Timer [ 0.000000] sched_clock: 32 bits at 100 Hz, resolution 10000000ns, wraps every 21474836475000000ns [ 0.000000] Calibrating delay loop... 60.62 BogoMIPS (lpj=303104) [ 0.100000] pid_max: default: 4096 minimum: 301 [ 0.120000] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.130000] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.270000] devtmpfs: initialized [ 0.340000] clocksource jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.630000] Switched to clocksource arm_system_timer [ 1.280000] io scheduler noop registered (default) [ 1.340000] bootconsole [earlycon0] disabled
Userspace
Not prepared yet. openSUSE is not available for ARMv7-M.
JTAG
OpenOCD
Board config board/spansion_sk-fm4-176l-s6e2cc.cfg available from OpenOCD 0.9.0 on (Tumbleweed).
Flash driver in progress:
flash 'fm4' found at 0x00000000 #0 : fm4 at 0x00000000, size 0x0020a000, buswidth 0, chipwidth 0 # 0: 0x00000000 (0x2000 8kB) protection state unknown # 1: 0x00002000 (0x2000 8kB) protection state unknown # 2: 0x00004000 (0x2000 8kB) protection state unknown # 3: 0x00006000 (0x2000 8kB) protection state unknown # 4: 0x00008000 (0x8000 32kB) protection state unknown # 5: 0x00010000 (0x10000 64kB) protection state unknown # 6: 0x00020000 (0x10000 64kB) protection state unknown # 7: 0x00030000 (0x10000 64kB) protection state unknown # 8: 0x00040000 (0x10000 64kB) protection state unknown # 9: 0x00050000 (0x10000 64kB) protection state unknown # 10: 0x00060000 (0x10000 64kB) protection state unknown # 11: 0x00070000 (0x10000 64kB) protection state unknown # 12: 0x00080000 (0x10000 64kB) protection state unknown # 13: 0x00090000 (0x10000 64kB) protection state unknown # 14: 0x000a0000 (0x10000 64kB) protection state unknown # 15: 0x000b0000 (0x10000 64kB) protection state unknown # 16: 0x000c0000 (0x10000 64kB) protection state unknown # 17: 0x000d0000 (0x10000 64kB) protection state unknown # 18: 0x000e0000 (0x10000 64kB) protection state unknown # 19: 0x000f0000 (0x10000 64kB) protection state unknown # 20: 0x00100000 (0x2000 8kB) protection state unknown # 21: 0x00102000 (0x2000 8kB) protection state unknown # 22: 0x00104000 (0x2000 8kB) protection state unknown # 23: 0x00106000 (0x2000 8kB) protection state unknown # 24: 0x00108000 (0x8000 32kB) protection state unknown # 25: 0x00110000 (0x10000 64kB) protection state unknown # 26: 0x00120000 (0x10000 64kB) protection state unknown # 27: 0x00130000 (0x10000 64kB) protection state unknown # 28: 0x00140000 (0x10000 64kB) protection state unknown # 29: 0x00150000 (0x10000 64kB) protection state unknown # 30: 0x00160000 (0x10000 64kB) protection state unknown # 31: 0x00170000 (0x10000 64kB) protection state unknown # 32: 0x00180000 (0x10000 64kB) protection state unknown # 33: 0x00190000 (0x10000 64kB) protection state unknown # 34: 0x001a0000 (0x10000 64kB) protection state unknown # 35: 0x001b0000 (0x10000 64kB) protection state unknown # 36: 0x001c0000 (0x10000 64kB) protection state unknown # 37: 0x001d0000 (0x10000 64kB) protection state unknown # 38: 0x001e0000 (0x10000 64kB) protection state unknown # 39: 0x001f0000 (0x10000 64kB) protection state unknown # 40: 0x00406000 (0x2000 8kB) protection state unknown # 41: 0x00408000 (0x2000 8kB) protection state unknown # 42: 0x0040a000 (0x2000 8kB) protection state unknown # 43: 0x0040c000 (0x2000 8kB) protection state unknown # 44: 0x0040e000 (0x2000 8kB) protection state unknown S6E2CCA auto erase enabled Info : Spansion S6E2CC erase sectors 1 to 1 Info : Spansion S6E2CC write at 0x00002000 (8192) Info : copying 8192 bytes to SRAM 0x1ffd005c Info : writing 0x00002000-0x00003fff (4096x) wrote 8192 bytes from file arch/arm/boot/dts/fm4-sk-176l-s6e2cc.dtb in 1.699034s (4.709 KiB/s)
Patch: http://openocd.zylin.com/#/c/2190/
USB interface
Firmware v23
# lsusb -d 1a6a:2000 -v
Bus 002 Device 009: ID 1a6a:2000 Spansion Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.01
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x1a6a Spansion Inc.
idProduct 0x2000
bcdDevice 1.60
iManufacturer 1 Spansion
iProduct 2 Spansion CMSIS-DAP + COM Port
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 107
bNumInterfaces 3
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x00
(Missing must-be-set bit!)
(Bus Powered)
MaxPower 62mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0 No Subclass
bInterfaceProtocol 0 None
iInterface 4 Spansion CMSIS-DAP
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 29
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 1
bInterfaceCount 2
bFunctionClass 2 Communications
bFunctionSubClass 2 Abstract (modem)
bFunctionProtocol 1 AT-commands (v.25ter)
iFunction 5 Spansion USB Serial Port
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 2 Communications
bInterfaceSubClass 2 Abstract (modem)
bInterfaceProtocol 1 AT-commands (v.25ter)
iInterface 0
CDC Header:
bcdCDC 10.01
CDC ACM:
bmCapabilities 0x00
CDC Union:
bMasterInterface 1
bSlaveInterface 2
CDC Call Management:
bmCapabilities 0x01
call management
bDataInterface 2
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 255
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Device Status: 0x0000
(Bus Powered)
Original firmware
$ lsusb -d 1a6a:2000 -v
Bus 002 Device 005: ID 1a6a:2000 Spansion Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.01
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x1a6a Spansion Inc.
idProduct 0x2000
bcdDevice 1.60
iManufacturer 1 Spansion
iProduct 2 Spansion CMSIS-DAP + COM Port
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 93
bNumInterfaces 3
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x00
(Missing must-be-set bit!)
(Bus Powered)
MaxPower 62mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0 No Subclass
bInterfaceProtocol 0 None
iInterface 4 Spansion CMSIS-DAP
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 29
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 1
bInterfaceCount 2
bFunctionClass 2 Communications
bFunctionSubClass 2 Abstract (modem)
bFunctionProtocol 1 AT-commands (v.25ter)
iFunction 5 Spansion USB Serial Port
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 2 Communications
bInterfaceSubClass 2 Abstract (modem)
bInterfaceProtocol 1 AT-commands (v.25ter)
iInterface 0
CDC Union:
bMasterInterface 0
bSlaveInterface 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 255
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Device Status: 0x0000
(Bus Powered)