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Author SHA1 Message Date
Heesub Shin
bda7d9ee4d ARMv7-R: fix to restore the Thumb flag in CPSR 
Thumb flag in CPSR is not restored back when the context switch occurs
while executing thumb instruction.

Reported-by: Eunbong Song <eunb.song@samsung.com>
Signed-off-by: Byoungtae Cho <bt.cho@samsung.com>
Signed-off-by: Heesub Shin <heesub.shin@samsung.com>
 2016-11-06 21:48:02 +09:00
Heesub Shin
343243c7c0 ARMv7-R: fix CPSR corruption after exception handling 
A sporadic hang with consequent crash is observed when booting:

    arm_prefetchabort: Prefetch abort. PC: 04d34a00 IFAR: 04d34a00 IFSR: 00000008
    up_assert: Assertion failed at file:armv7-r/arm_prefetchabort.c line: 87 task: init
    up_dumpstate: Current sp: 004c3df0
    up_dumpstate: Interrupt stack:
    up_dumpstate:   base: 004c05fc
    up_dumpstate:   size: 00000800
    up_dumpstate: User stack:
    up_dumpstate:   base: 004c3f58
    up_dumpstate:   size: 00000fec
    up_dumpstate: User Stack
    up_stackdump: 004c3de0: 004a0d14 004c3df0 004c3f58 004a0d20 00000057 004c2c58 09000000 004a42a4
    up_stackdump: 004c3e00: 00000003 004c3e10 004a0f1c 004bbcef 33c44b00 004a0f28 04d34a00 00000008
    up_stackdump: 004c3e20: 00000008 004a01bc 004bfd38 00000001 00007fff 00000001 34134a00 d83e4c00
    up_stackdump: 004c3e40: 09000000 00000000 33c44b00 d83e4c00 0c3f4c00 00000000 00000000 00000003
    up_stackdump: 004c3e60: 004c3e70 004a1494 04d34a00 200b0253 004c3ed8 004a5298 004c3ed8 6d00006d
    up_stackdump: 004c3e80: 0000006d 004bc3f4 00000009 004a4f64 00000009 b9e0784f 333f3ed0 69d4227d
    up_stackdump: 004c3ea0: d81f09bd 0f867344 5a7e2c12 8acefd34 5d00dc1b 004bc432 004c3f08 004c0e08
    up_stackdump: 004c3ec0: 00000000 00000000 00000000 00000000 00000000 004a4210 004a5258 004a5300
    up_stackdump: 004c3ee0: 00000000 00000001 ffffffff 004c3f80 000002b0 004a4234 00000007 004c3f08
    up_stackdump: 004c3f00: 004a58b4 004bc432 004bc3f4 004c3f80 000002b0 0000029c 00000000 0000029c
    up_stackdump: 004c3f20: 00000000 004a5900 0000ff01 00000000 00000000 004a61f4 00000000 004a5fa4
    up_stackdump: 004c3f40: 00000000 004a5f6c 00000000 004a2668 00000000 00000000 b7509f04 004c3f64
    up_registerdump: R0: 00000001 00007fff 00000001 34134a00 d83e4c00 09000000 00000000 33c44b00
    up_registerdump: R8: d83e4c00 0c3f4c00 00000000 00000000 00000003 004c3e70 004a1494 04d34a00
    up_registerdump: CPSR: 200b0253

It seems to be caused by the corrupted or wrong CPSR restored on return
from exception. NuttX restores the context using code like this:

    msr spsr, r1

GCC translates this to:

    msr spsr_fc, r1

As a result, not all SPSR fields are updated on exception return. This
should be:

    msr spsr_fsxc, r1

On some evaluation boards, spsr_svc may have totally invalid value at
power-on-reset. As it is not initialized at boot, the code above may
result in the corruption of cpsr and thus unexpected behavior.

Reported-by: Eunbong Song <eunb.song@samsung.com>
Signed-off-by: Heesub Shin <heesub.shin@samsung.com>
 2016-11-06 20:48:09 +09:00
Heesub Shin
6bfc6b4d23 ARMv7-R: fix typo in mpu support 
s/ARMV7M/ARMV7R/g

Reported-by: Eunbong Song <eunb.song@samsung.com>
Signed-off-by: Heesub Shin <heesub.shin@samsung.com>
 2016-11-06 20:48:09 +09:00
Heesub Shin
003511d198 ARMv7-R: add cache handling functions 
This commit adds functions for enabling and disabling d/i-caches which
were missing for ARMv7-R.

Signed-off-by: Heesub Shin <heesub.shin@samsung.com>
 2016-11-06 20:48:01 +09:00
Heesub Shin
6a1a846011 ARMv7-R: add new Kconfig entries for d/i-cache 
Unlike in ARMv7-A/M, Kconfig entries for data and instruction caches
are currently missing in ARMv7-R. This commit adds those missing Kconfig
entries. Actual implmenetation for those functions will be added in the
subsequent patches.

Signed-off-by: Heesub Shin <heesub.shin@samsung.com>
 2016-11-06 16:07:46 +09:00
Heesub Shin
2b922fcdbd ARMv7-R: remove the redundant update on SCTLR 
mpu_control() is invoking cp15_wrsctlr() around SCTLR update
redundantly.

Signed-off-by: Heesub Shin <heesub.shin@samsung.com>
 2016-11-06 16:07:45 +09:00
Heesub Shin
05d477661b ARMv7-R: fix invalid drbar handling 
In ARMv7-R, [31:5] bits of DRBAR is physical base address and other bits
are reserved and SBZ. Thus, there is no point in passing other than the
base address.

Signed-off-by: Heesub Shin <heesub.shin@samsung.com>
 2016-11-06 16:07:41 +09:00
Heesub Shin
af6e4f59c6 ARMv7-R: fix compilation error 
This commit fixes compilation errors on MPU support for ARMv7-R.

Signed-off-by: Heesub Shin <heesub.shin@samsung.com>
 2016-11-06 16:07:38 +09:00
Heesub Shin
96a200a71c ARMv7-R: fix typo 
fix trivial typo: s/ARMv7-A/ARMv7-R/

Signed-off-by: Heesub Shin <heesub.shin@samsung.com>
 2016-11-06 16:07:36 +09:00
Gregory Nutt
45f549d2b8 LM32: Back out part of last change 2016-11-05 17:39:06 -06:00
Gregory Nutt
796969f6b6 Update TODO. Provide do-nothing stubs for mutex attribute interfaces if features not enabled. pthread_cond includes a signaling semaphore and should call sem_setprotocol. 2016-11-05 11:06:52 -06:00
Gregory Nutt
6f1c5e7b43 Add some comments. 2016-11-05 09:44:29 -06:00
Gregory Nutt
bb5cd37409 Merge branch 'misoc' of bitbucket.org:nuttx/nuttx into misoc 2016-11-05 08:50:16 -06:00
Gregory Nutt
5dc9d963f6 configs/misco: CONFIG_DEFAULT_SMALL should not be set either. It is really too late now, hoever, because all of the small defaults have already been set. 2016-11-05 08:49:50 -06:00
Gregory Nutt
479c9776a7 configs/misoc: Should not have CONFIG_MM_SMALL set in defconfig. 2016-11-05 08:42:33 -06:00
Gregory Nutt
b0dffdc2ca Fix a number of header files with mismatched 'extern C {' and '}' 2016-11-05 07:25:05 -06:00
Gregory Nutt
3f150daf96 LM32: Oops, missed one line of code in the manual application of a patch 2016-11-04 19:41:43 -06:00
Gregory Nutt
1c05eb651c LM32: lm32_vectors.S needs to call lm32_doirq(), passing two parameters 2016-11-04 19:29:54 -06:00
Gregory Nutt
0b83e8afaa LM32: Remove some extra spacing 2016-11-04 17:48:24 -06:00
Gregory Nutt
6cc73f0405 LM32: Fix a copy/paste error in lm32_vectors.S that I introduced. 2016-11-04 17:42:10 -06:00
Gregory Nutt
911e5abb2c LM32: Fix various compilation errors that I introduced. 2016-11-04 17:37:10 -06:00
Gregory Nutt
5a9d3b20fa LM32: Add README. Update hello defconfig and setenv.sh 2016-11-04 17:19:42 -06:00
Lok Tep
0fd38c2883 enable mmc 2016-11-04 22:02:46 +01:00
Lok Tep
b1b2008037 bad offset 2016-11-04 22:02:15 +01:00
Lok Tep
82f8802275 typo, missing ( 2016-11-04 21:58:31 +01:00
Gregory Nutt
af0d7a96fe LM32: More standard, common helper functions 2016-11-04 14:42:17 -06:00
Ramtin Amin
45caca804a LM32: Progress on interrupt and serial driver. 2016-11-04 14:04:43 -06:00
Gregory Nutt
8fe916e133 Attach the software interrupt handler when interrupts are intialized. 2016-11-04 11:23:33 -06:00
Gregory Nutt
50efe4a906 LM32: Add a fake IRQ number for a software interrupt. 2016-11-04 11:17:12 -06:00
Ramtin Amin
b2126738cd LM32: Fix implementation of up_irq_save() and up_irq_restore() 2016-11-04 10:54:10 -06:00
Gregory Nutt
ddd8716189 LM32: Ooops.. last version still in editor 2016-11-04 10:42:05 -06:00
Gregory Nutt
145ee2e6f1 LM32: Add prototype for lm32_decodeirq(). 2016-11-04 10:39:57 -06:00
Gregory Nutt
8f3c59b0d6 LM32: Rename up_doirq() to lm32_doirq() 2016-11-04 10:21:55 -06:00
Gregory Nutt
905f6f2956 Merge remote-tracking branch 'origin/master' into misoc 2016-11-04 09:58:57 -06:00
Gregory Nutt
e6435c28d0 Fix some name errors in port: RISC-V -> LM32 2016-11-04 09:58:27 -06:00
Gregory Nutt
8bd8ab1a45 configs/nucleo_f303re: Various fixes to get the adc configuration building again after PR. Refresh all configurations. 2016-11-04 06:59:28 -06:00
Gregory Nutt
4b0372e542 Missing # on endif 2016-11-03 21:27:52 -06:00
Gregory Nutt
1d0d2fb8e1 Fix typo introduced with big set of sem_setprotocol() changes. 2016-11-03 21:08:17 -06:00
Gregory Nutt
b78ee72a07 defconfgs: More fallout from name change of apps/examples/buttons to archbuttons. 2016-11-03 20:20:25 -06:00
Gregory Nutt
73fc186beb sem_setprotocol: Handle a case of missing proxy for sem_setprotocol. Reorder so that (1) this error is avoided, and (2) >No proxy is needed if priority inheritance is not enabled. 2016-11-03 18:51:38 -06:00
Gregory Nutt
65b1ced5f2 Merge remote-tracking branch 'origin/master' into misoc 2016-11-03 18:12:02 -06:00
Gregory Nutt
6ff6cca1a0 Fix some mispellings of semaphore 2016-11-03 17:48:36 -06:00
Gregory Nutt
5cfb83ec81 ESP32: File repeated in Make.defs 2016-11-03 17:47:09 -06:00
Gregory Nutt
0a5b4f684a arch: Disable priority inheritance on all semaphores used for signaling in the rest of the MCU drivers 2016-11-03 17:38:26 -06:00
Gregory Nutt
d8fecba333 arch: Disable priority inheritance on all semaphores used for signaling in all RNG drivers 2016-11-03 17:19:51 -06:00
Gregory Nutt
77a0b6c26a graphics/, libnx/: Disable priority inheritance on all semaphores used for signaling 2016-11-03 17:12:49 -06:00
Gregory Nutt
d28181da10 arch: Disable priority inheritance on all semaphores used for signaling in all USB host drivers 2016-11-03 17:05:53 -06:00
Gregory Nutt
bb6bfa633e arch: Disable priority inheritance on all semaphores used for signaling in all SD card drivers 2016-11-03 15:13:27 -06:00
Gregory Nutt
8b07aa6f7c arch: Disable priority inheritance on all semaphores used for signaling in all SPI drivers 2016-11-03 14:51:44 -06:00
Gregory Nutt
e1cd9febbf arch: Disable priority inheritance on all semaphores used for signaling in all I2C/TWI drivers 2016-11-03 14:23:42 -06:00