Commit Graph

644 Commits

Author SHA1 Message Date
Gregory Nutt
9ec104834a Remove CONFIG_USARTn_ISUART 2016-05-25 11:21:48 -06:00
Gregory Nutt
249a2e48e5 Rename CONFIG_ARCH_HAVE_USARTn to CONFIG_USARTn_SERIALDRIVER 2016-05-25 10:39:23 -06:00
Gregory Nutt
fb484a581f All GCC final arch/*/src/Makefiles: Allow --start-group and --end-group to be redefined for the case where GCC is used to link (instead of LD). Suggested by Paul Alexander Patience. 2016-05-17 10:43:15 -06:00
Gregory Nutt
99e695398c Rename up_boot to arm_boot 2016-05-12 13:42:49 -06:00
Gregory Nutt
48106e605a Merge in arch/ submodule 2016-04-10 07:49:41 -06:00
Gregory Nutt
bd846c2e72 All architectures: Register the schedule note driver if enabled 2016-03-17 17:00:59 -06:00
Gregory Nutt
4d4f54a789 Rename current_regs to g_current_regs; For ARM, g_current_regs needs to be an array to support multiple CPUs 2016-03-09 13:41:48 -06:00
Gregory Nutt
9c63736c98 Standard some naming if code sectino comments 2016-02-21 18:06:09 -06:00
Gregory Nutt
666cc280f4 Rename irqenable() to up_irq_enable(); rename irqdisable() to up_irq_disable() 2016-02-14 16:54:09 -06:00
Gregory Nutt
83bc1c97c3 Rename irqsave() and irqrestore() to up_irq_save() and up_irq_restore() 2016-02-14 16:11:25 -06:00
Gregory Nutt
70e502adb0 Replace irqsave() with enter_critical_section(); replace irqrestore() with leave_critical_section() 2016-02-13 19:11:09 -06:00
Gregory Nutt
c62177be00 AVR: Replace explicit references to g_readytorun with indirect references via the macro this_task() 2016-02-06 13:55:15 -06:00
Gregory Nutt
afbd0f55c3 For AVR MCUs, rename up_spiinitialize to avr_spibus_initialize 2016-01-27 08:00:28 -06:00
Gregory Nutt
b7cbbab761 Remove CONFIG_SPI_OWNBUS: Now it is not just a good idea, it is the law 2016-01-23 18:10:21 -06:00
Gregory Nutt
4bd6adb725 Add dummy hwfeatures method to all SPI interfaces 2016-01-23 15:09:38 -06:00
Gregory Nutt
4e8772dfca ATMEGA: A few trivial updates to USART-related macros 2016-01-16 14:38:28 -06:00
Gregory Nutt
6ca2315cf0 ATMEGA: Make some naming used with the 2560 compatible with other ATmega parts 2016-01-16 13:41:49 -06:00
Gregory Nutt
4b71d74a2b Minor typo fix in warning 2016-01-09 19:57:48 -06:00
Gregory Nutt
10001f8556 WINTOOl should be selected only for Cygwin. MSYS and native should not have it. 2016-01-09 16:34:33 -06:00
Gregory Nutt
7231439290 Test for CONFIG_AVR_HAS_MEMX_PTR must be after inclusion of config.h 2016-01-09 08:11:25 -06:00
Gregory Nutt
d0578bfc2b Changes to last pull request needed for conformance with coding standard 2016-01-09 07:25:24 -06:00
Gregory Nutt
203899cca8 Merged in kloper/arch/atmega2560 (pull request #48)
debug macros for AVR (take #2): Introduce debug macro hooks for AVR
2016-01-09 07:17:35 -06:00
Dimitry Kloper
642b92b391 Introduce debug macro hooks for AVR
When AVR_HAS_MEMX_PTR is enabled provide dbg macro hooks that place
the format strings in program memory releasing RAM for other tasks.
2016-01-09 14:44:38 +02:00
Gregory Nutt
7a393f9e8b Eliminate some warnings 2016-01-08 11:26:16 -06:00
Gregory Nutt
278701f93d Eliminate warnings (one of which looks like a bug) 2016-01-08 11:22:57 -06:00
Gregory Nutt
68e3f5d9ce All AVR toolchain configuration names must end with _TOOLCHAIN to work properly with nuttx/tools/testbuilds.sh 2016-01-08 10:39:59 -06:00
Gregory Nutt
dfe3240973 AVR: Rename ATMEGA_PC_SIZE to AVR_PC_SIZE since it must be used in common AVR logic. Add definitions for other AVR architectures as necessary for compilation 2016-01-07 08:14:09 -06:00
Gregory Nutt
951c40215a Atmega: Eliminate some warnings 2016-01-06 09:50:15 -06:00
Dimitry Kloper
16212f19e7 AVR: Introduce Atmel Toolchain as a configuration option
Atmel's AVR8 toolchain is similar to WinAVR, but at present moment
it has one important feature that WinAVR does not. The __flash and __memx
allow built in comiler support for transparent program memory pointers.
Functions that use such pointers will work both with RAM arrays and
flash memory arrays. The compiler generates an appropriate code automatically.
For systems with tiny memory like atmega, this is very important and
allows to move all static const strings into flash.
2016-01-04 21:53:44 +02:00
Dimitry Kloper
b9f06dc5e3 ATMEGA2560: Fix compilation when CONFIG_DISABLE_SIGNALS is undefined 2016-01-04 21:39:48 +02:00
Gregory Nutt
71c289ce4f Rename all architecture files of form xyz_internal.h to just xyz.h 2015-12-29 18:07:11 -06:00
Gregory Nutt
68cc2ecfd2 ATMEGA2560: Most cosmetic changes from review of pull request 2015-12-29 13:02:20 -06:00
Dimitry Kloper
0b8a43abbb Merged nuttx/arch/master into atmega2560 2015-12-29 19:10:57 +02:00
Dimitry Kloper
3c0c90e07d Minor identation fix 2015-12-29 19:09:20 +02:00
Dimitry Kloper
3746305f12 AVR: Minor adapt to a differnt TIMER IRQ notions for Atmega2560 2015-12-29 19:08:13 +02:00
Dimitry Kloper
556954141e AVR: Add support for AVR chips with 24-bit Program Counter register
The main challenge is to change the context switch code to be aware of the
extra byte that is saved on stack during call and intterupt. This relates also
to the task startup and signal handling.
2015-12-29 19:01:06 +02:00
Dimitry Kloper
99aab135b2 AVR: Make setting of XDIV optional for platforms that support it
Put setting of XDIV into ifdef since not AVR platforms support it.
2015-12-29 18:56:12 +02:00
Dimitry Kloper
462307f4b7 AVR: Clear EIND on system start-up
For AVR chips (Atmega2560) Program Counter register larger than 16 bits
EIND represents the most significant byte that is used for EICALL and EIJMP
instructions.

Setting of EIND is normally managed by compiler, but I have seen a situation
when for first 64K flash segment compiler didn't set EINT explicitly. Thus
setting EIND at system startup makes sure we are safe.
2015-12-29 18:46:28 +02:00
Dimitry Kloper
9a4a06bf47 AVR: Explicitly disable interrupts as the first step of system init
Disabling interrupts at the very beginning of system init does not
make sense after reset since interrupts are disabled anyway. But
it is very convenient for debugging purposes, in situations when the
system misbehaves and ocassionally jumps to zero.
2015-12-29 18:35:36 +02:00
Dimitry Kloper
ff5e589f76 AVR: add support for TCGETS and TCSETS terminal controls
Sometimes I need UART to support binary data transfer, TCSETS/TCGETS allow
stwitching into binary mode.
2015-12-29 17:56:44 +02:00
Dimitry Kloper
d6f6e41a36 AVR: Fix linking error for AVR platforms that have no ARCH_HAVE_LEDS defined
Minor bug while working on Arduino Mega support. I didn't add support
for ARCH_HAVE_LEDS and have it undefined in .config. To my surprise compilation
failed since AVR code had a related function compiled in.
2015-12-29 17:26:11 +02:00
Dimitry Kloper
8f8b88f532 AVR: Fix resulting nuttx file name when EXEEXT is not empty
arch/avr/Makefile is adding extra EXEEXT to the
nuttix image file. This was not discovered since in most configurations
EXEEXT is empty string.
2015-12-29 17:19:30 +02:00
Dimitry Kloper
41bdcd16b8 Change notation of PCH and PCL registers into PC0 and PC1
This is for forthcoming Atmega2560 support. The Atmega2560 has 24-bit PC
thus, PCH and PCL would become PCH, PCM and PCL (M for Middle). The problem
that in this notation PCM is equivalent to former PCH. This makes compatable
porting kind of difficult, at least for my taste.

Instead PCH becomes PC0 and PCL becomes PC1 (think of the index as order of
bytes pushed to stack when call is performed, PC0 as MSB goes first, PC1
goes to stack second, and for 24-bit PC, PC2 as LDB goes last).
2015-12-28 00:46:24 +02:00
Dimitry Kloper
0c1294d332 Introduce a new Kconfig variant for Atmega2560 and add some basic stuff
Modify Kconfig to be aware of the new chip.
Add all the interrupt hanler constants and vectors where needed.
Move contsatnts from generic to specific headers when needed.
2015-12-27 01:47:35 +02:00
Gregory Nutt
46da8a07ef Costmetic changes from review of merge request 2015-12-26 16:39:51 -06:00
Dimitry Kloper
0998876ef6 AVR: Fix interrupt bombing during a context switch
TCB_RESTORE macro has a problem when restoring Status Register
and returning from the function (in up_fullcontextrestore()) as non-atomic action.

If there is some frequently occurring interrupt, chances are that we will
enter the interrupt handler just before ret is called.
The handler may cause a context switch which, when unrolled, will
execute up_fullcontextrestore() function that employs TCB_RESTORE.
It will be interrupted again just before return, leaving part of context
switch content un-popped again, etc... Thus, chances are that the stack will
eventually blow.

Note that this is not some edge condition fix. This bug was discovered when
testing AVR with UART configured to work on 115200 baud rate.
2015-12-26 21:55:40 +02:00
Gregory Nutt
927b1dcc1f Initialize the telnet factory as part of the common architecture intialization 2015-12-07 11:40:29 -06:00
Gregory Nutt
2afd4595e4 Re-think how __KERNEL__ option is set in architecture Makefiles. Should be passed in EXTRADEFINES 2015-11-26 06:59:35 -06:00
Gregory Nutt
4aa3dcb51a __KERNEL__ should be defined when compiler architecture specific logic 2015-11-25 18:05:36 -06:00
Gregory Nutt
14d7ede265 All instances of up_initialize() should call loop_register() is CONFIG_DEV_LOOP=y 2015-11-25 17:10:41 -06:00