Commit Graph

280 Commits

Author SHA1 Message Date
Michael (XIAO Xufeng)
571864e8ae esp_flash: fix set qe bit and write command issues
There used to be dummy phase before out phase in common command
transactions. This corrupts the data.

The code before never actually operate (clear) the QE bit, once it finds
the QE bit is set. It's hard to check whether the QE set/disable
functions work well.

This commit:

1. Cancel the dummy phase

2. Set and clear the QE bit according to chip settings, allowing tests
   for QE bits. However for some chips (Winbond for example), it's not
   forced to clear the QE bit if not able to.

3. Also refactor to allow chip_generic and other chips to share the same
   code to read and write qe bit; let common command and read command share
   configure_host_io_mode.

4. Rename read mode to io mode since maybe we will write data with quad
   mode one day.
2019-10-14 17:25:58 +08:00
Michael (XIAO Xufeng)
afbe1ba878 spi: move deprecated functions into internal header
Resolves https://github.com/espressif/esp-idf/issues/4132
2019-10-08 11:51:39 +08:00
Ivan Grokhotkov
5830f529d8 Merge branch 'master' into feature/esp32s2beta_merge 2019-10-02 19:01:39 +02:00
Ivan Grokhotkov
ccde8c7d2f spi_flash: load partition table before adding an external partition
esp_partition_register_external did not call load_partitions, so if
it was called before any call to esp_partition_find, then the main
partition table would never be loaded. Introduce new function,
ensure_partitions_loaded, and call it both from esp_partition_find and
esp_partition_register_external.

Closes https://github.com/espressif/esp-idf/issues/4116
2019-09-30 16:11:09 +02:00
Angus Gratton
b0bd4d0f14 Merge branch 'fix/esp_flash_adapter_in_iram' into 'master'
esp_flash: put adapter to legacy functions into IRAM to be back-compatible

See merge request espressif/esp-idf!6135
2019-09-20 18:21:58 +08:00
Wang Fang
32adfdc307 Add Chinese translation for the 2nd batch of the files in storage folder in api-reference.
1. The translation should be first reviewed by technical reviewers;
2. and then by language reviewers.

For the translation for the first batch of files, please see !MR5620 and !MR5613
2019-09-20 12:32:55 +08:00
Angus Gratton
adfc06a530 Merge branch 'master' into feature/esp32s2beta_merge 2019-09-20 10:28:37 +10:00
michael
70d771eb2d esp_flash: put adapter to legacy functions into IRAM to be back-compatible 2019-09-18 15:07:47 +08:00
Angus Gratton
438d513a95 Merge branch 'master' into feature/esp32s2beta_merge 2019-09-16 16:18:48 +10:00
Michael (XIAO Xufeng)
511820820e esp_flash: fix the coredump issue
During coredump, dangerous-area-checking should be disabled, and cache
disabling should be replaced by a safer version.

Dangerous-area-checking used to be in the HAL, but it seems to be more
fit to os functions. So it's moved to os functions. Interfaces are
provided to switch between os functions during coredump.
2019-09-14 17:01:36 +08:00
Michael (XIAO Xufeng)
6139864a4c esp_flash: fix coredump for legacy spi flash API
When legacy mode is used, the coredump still fails during linking
because "esp_flash_init_default_chip", "esp_flash_app_init" and
"esp_flash_default_chip " are not compiled and linked.

Instead of using ``if`` macros in callers, these functions are protected
by ``if`` macros in the header, and also not compiled in the sources.
"esp_flash_default_chip" variable is compiled with safe default value.
2019-09-14 16:56:31 +08:00
Michael (XIAO Xufeng)
d008c47dac esp_flash: add support for encrypted read and write
Using legacy implementation.
2019-09-12 12:41:50 +08:00
Li Shuai
d48aac96a1 util-test: Fix the conflict target of esp32_test_logo between esp32s2beta and esp32 2019-09-10 20:49:36 +08:00
Li Shuai
d5a9b1a240 util-test: The cache and spi_flash tests passed 2019-09-09 16:59:29 +08:00
Angus Gratton
35147119f1 Merge branch 'feature/support_ut_esp32s2beta' into 'feature/esp32s2beta'
ci: support build and run UT for esp32s2beta

See merge request espressif/esp-idf!5702
2019-09-09 08:34:16 +08:00
Alex Lisitsyn
7ff9538c48 espcoredump: fix issue with spi_flash access
spi_flash has been updated and its functions work from flash by default instead of IRAM that cause issue
add Kconfig value into espcoredump to enable spi_flash legacy mode (CONFIG_SPI_FLASH_USE_LEGACY_IMPL) when core dump is selected
fix spi_flash issues to work correctly with legacy mode when CONFIG_SPI_FLASH_USE_LEGACY_IMPL is used
2019-09-06 15:37:55 +08:00
wanglei
653d8b5bdd update cache and spiram related files and bug fixes
1. remove speed dependency of SPIRAM
2. support wrap mode of cache, flash and SPIRAM
3. fix some bugs on cache modes support
2019-09-05 14:14:49 +08:00
Michael (XIAO Xufeng)
76a3a5fb48 ci: disable unavailable tests for esp32s2beta 2019-09-04 10:53:25 +10:00
Michael (XIAO Xufeng)
9f1c8f0c76 spi_flash: support esp32s2beta 2019-09-04 10:53:25 +10:00
Michael (XIAO Xufeng)
9baa7826be fix unit test and examples for s2beta 2019-09-04 10:53:25 +10:00
Ivan Grokhotkov
12c9d9a564 spi_flash: remove duplicate definition of spi_flash_unlock
The other (static) definition is in flash_ops.c, all references are
also in flash_ops.c.
2019-08-23 12:37:55 +08:00
Angus Gratton
6990a7cd54 Merge branch 'master' into feature/esp32s2beta_update 2019-08-19 15:03:43 +10:00
Angus Gratton
74c2eb3aff Merge branch 'fix/esp_flash_set_get_wp' into 'master'
esp_flash: fix the set/get write protection functions

See merge request espressif/esp-idf!5682
2019-08-16 06:14:48 +08:00
Angus Gratton
18c5cfadae Fix function prototypes 2019-08-13 17:14:16 +10:00
Angus Gratton
309376f51a spi_flash: Force legacy mode for ESP32-S2
Can be removed once IDF-763 is merged
2019-08-13 17:14:16 +10:00
Angus Gratton
8f74271d5d esp_rom: Fail immediately if the wrong SoC's header file is included 2019-08-12 16:57:40 +10:00
Angus Gratton
2f56116db2 Cleanup of previous merge commit 2019-08-12 16:57:40 +10:00
Michael (XIAO Xufeng)
264ffbeb14 timer_group: use the LL 2019-08-09 13:46:31 +08:00
Michael (XIAO Xufeng)
e947522f38 esp_flash: improve the comments a bit 2019-08-08 23:18:01 +08:00
Michael (XIAO Xufeng)
e5704ab1a8 esp_flash: fix the set/get write protection functions
Add support for get write protection support, fixed the duplicated
set_write_protection link.

All the write_protection check in the top layer are removed. The lower
levels (chip) should ensure to disable write protection before the
operation start.
2019-08-08 23:18:00 +08:00
Angus Gratton
04ae56806c Merge branch 'master' into feature/esp32s2beta_update 2019-08-08 15:26:58 +10:00
Angus Gratton
24d26fccde Merge branch 'master' into feature/esp32s2beta_update 2019-08-08 13:44:24 +10:00
Anton Maklakov
ec94ee80f7 Fix a build issue with replacing init_spi_flash() in the host tests 2019-08-01 16:28:56 +07:00
Anton Maklakov
afbaf74007 tools: Mass fixing of empty prototypes (for -Wstrict-prototypes) 2019-08-01 16:28:56 +07:00
Angus Gratton
058ef98c33 Merge branch 'feature/cmake_default_build_system' into 'master'
cmake: Make CMake the default build system

Closes IDF-198 and IDF-325

See merge request espressif/esp-idf!5328
2019-07-10 08:16:39 +08:00
Angus Gratton
47bbb107a8 build system: Use CMake-based build system as default when describing commands 2019-07-08 17:31:27 +10:00
Martin Thierer
d6c2dad101 esp_partition_erase_range(): rename parameter "start_addr" to "offset"
The name "start_addr" (which goes straight into the docs) implies
it's an absolute address while in fact it's an offset into the
partition like what's used in all the other esp_partition_*
functions.

So in order to avoid confusion make the name consistent with the
parameter names used for the other partition functions and call it
"offset".

Merges https://github.com/espressif/esp-idf/pull/3750
2019-07-08 17:29:05 +10:00
Ivan Grokhotkov
1c17558e6e spi_flash: use same argument types in .h and .c files
Fixes compilations on targets where size_t != uint32_t
2019-07-02 10:26:06 +02:00
Ivan Grokhotkov
ec427a5b43 spi_flash: support for partitions in external flash 2019-07-02 10:26:06 +02:00
Michael (XIAO Xufeng)
d6bd24ca67 esp_flash: add initialization interface for SPI devices 2019-06-27 13:27:27 +08:00
Renz Christian Bagaporo
9b350f9ecc cmake: some formatting fixes
Do not include bootloader in flash target when secure boot is enabled.
Emit signing warning on all cases where signed apps are enabled (secure
boot and signed images)
Follow convention of capital letters for SECURE_BOOT_SIGNING_KEY
variable, since it is
relevant to other components, not just bootloader.
Pass signing key and verification key via config, not requiring
bootloader to know parent app dir.
Misc. variables name corrections
2019-06-21 19:53:29 +08:00
Renz Christian Bagaporo
9eccd7c082 components: use new component registration api 2019-06-21 19:53:29 +08:00
Michael (XIAO Xufeng)
37cb673cd7 esp_flash: update the document to the latest API 2019-06-20 11:50:23 +08:00
Ivan Grokhotkov
026533cd72 esp_flash: fix C++ compilation and some typos 2019-06-20 10:55:13 +08:00
Michael (XIAO Xufeng)
caf121e4b6 esp_flash: break the inappropriate include chain in spi_flash_host_drv.h 2019-06-20 10:55:12 +08:00
suda-morris
3f7a571c90 fix errors when ci testing for esp32 2019-06-19 15:31:47 +08:00
Michael (XIAO Xufeng)
1036a091fe spi_flash: support working on differnt buses and frequency 2019-06-18 06:32:52 +00:00
Angus Gratton
ce4de867d6 spi_flash: New low-level flash API 2019-06-18 06:32:52 +00:00
Kirill Chalov
4faf2de035 Doc/review api ref storage 2019-06-17 14:23:52 +08:00
Wang Jia Lin
e2d1c6234f Merge branch 'bugfix/improve_flash_dio_read_timing' into 'master'
bugfix(flash): fix flash dio read mode configuration error on SPI0

See merge request idf/esp-idf!5086
2019-06-14 12:10:46 +08:00
Ivan Grokhotkov
cfba50811d spi_flash: fix unit tests compilation 2019-06-13 19:34:40 +08:00
Roland Dobai
22d070e0af spi_flash: Rename long Kconfig options 2019-06-12 08:03:07 +02:00
Roland Dobai
842384a0d3 spi_flash: Fix Kconfig indentation
Closes https://github.com/espressif/esp-idf/issues/3598
2019-06-12 08:03:07 +02:00
Renz Christian Bagaporo
54ef60f26b component: revert some of the dependency corrections
!4452 and !4897 made some ill-advised corrections to dependency info;
revert those in this MR. Handling pre-built binaries as imported
libraries is retained, however.
2019-06-11 18:09:26 +08:00
suda-morris
4a79d750a5 clean up build warnings 2019-06-11 13:07:37 +08:00
Angus Gratton
ddbd09eb15 esp32/esp32s2beta: Extract common SPIRAM options into esp_commmon component 2019-06-11 13:07:37 +08:00
suda-morris
84b2f9f14d build and link hello-world for esp32s2beta 2019-06-11 13:07:37 +08:00
suda-morris
61ce868396 make bootloader_support support esp32s2beta 2019-06-11 13:07:02 +08:00
Konstantin Kondrashov
399d2d2605 all: Using xxx_periph.h
Using xxx_periph.h in whole IDF instead of xxx_reg.h, xxx_struct.h, xxx_channel.h ... .

Cleaned up header files from unnecessary headers (releated to soc/... headers).
2019-06-03 14:15:08 +08:00
chenjianqiang
d68f1907ef bugfix(flash): improve flash dio read timing
When flash work in DIO Mode, in order to ensure the fast read mode of flash
is a fixed value, we merged the mode bits into address part, and the fast
read mode value is 0 (the default value).
2019-05-28 14:51:04 +08:00
Roland Dobai
1ad2283641 Rename Kconfig options (components/bootloader) 2019-05-21 09:32:55 +02:00
Roland Dobai
0ae53691ba Rename Kconfig options (components/esp32) 2019-05-21 09:09:01 +02:00
Renz Christian Bagaporo
477fa49fc0 examples: update idf_as_lib example to use new api 2019-05-14 18:01:14 +08:00
Renz Christian Bagaporo
ffec9d4947 components: update with build system changes 2019-05-13 19:59:17 +08:00
Tim Nordell
7892cf6a03 partition: Fix "encrypted" read/write when encryption is disabled
According to the documentation[1][2] for partitions, setting the encrypted
flag for partitions should be a no-op when system level encryption isn't
enabled.  The current implementation, however, does not actually match
the documentation and it ends up with an unreadable partition via the
partition API if a partition flag is marked as encrypted without
system-level encryption enabled.  (This is because the writes go through
the encryption block, and reads do not go through the encryption block
when this situation occurs causing unreadable data to the application
running.) This fixes up the read-back of the partition table to match
whether or not the partition is currently encrypted under the hood.

This should not affect the bootloader's code for reading/writing encrypted
partitions as the bootloader directly invokes the spi_flash_write*(...)
APIs.

[1] https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/partition-tables.html#flags
[2] https://docs.espressif.com/projects/esp-idf/en/latest/security/flash-encryption.html#encrypted-partition-flag

Closes https://github.com/espressif/esp-idf/pull/3328

Signed-off-by: Tim Nordell <tim.nordell@nimbelink.com>
2019-05-03 15:03:04 +05:30
Michael (XIAO Xufeng)
562af8f65e global: move the soc component out of the common list
This MR removes the common dependency from every IDF components to the SOC component.

Currently, in the ``idf_functions.cmake`` script, we include the header path of SOC component by default for all components.
But for better code organization (or maybe also benifits to the compiling speed), we may remove the dependency to SOC components for most components except the driver and kernel related components.

In CMAKE, we have two kinds of header visibilities (set by include path visibility):

(Assume component A --(depends on)--> B, B is the current component)

1. public (``COMPONENT_ADD_INCLUDEDIRS``): means this path is visible to other depending components (A) (visible to A and B)
2. private (``COMPONENT_PRIV_INCLUDEDIRS``): means this path is only visible to source files inside the component (visible to B only)

and we have two kinds of depending ways:

(Assume component A --(depends on)--> B --(depends on)--> C, B is the current component)

1. public (```COMPONENT_REQUIRES```): means B can access to public include path of C. All other components rely on you (A) will also be available for the public headers. (visible to A, B)
2. private (``COMPONENT_PRIV_REQUIRES``): means B can access to public include path of C, but don't propagate this relation to other components (A). (visible to B)

1. remove the common requirement in ``idf_functions.cmake``, this makes the SOC components invisible to all other components by default.
2. if a component (for example, DRIVER) really needs the dependency to SOC, add a private dependency to SOC for it.
3. some other components that don't really depends on the SOC may still meet some errors saying "can't find header soc/...", this is because it's depended component (DRIVER) incorrectly include the header of SOC in its public headers. Moving all this kind of #include into source files, or private headers
4. Fix the include requirements for some file which miss sufficient #include directives. (Previously they include some headers by the long long long header include link)

This is a breaking change. Previous code may depends on the long include chain.
You may need to include the following headers for some files after this commit:

- soc/soc.h
- soc/soc_memory_layout.h
- driver/gpio.h
- esp_sleep.h

The major broken include chain includes:

1. esp_system.h no longer includes esp_sleep.h. The latter includes driver/gpio.h and driver/touch_pad.h.
2. ets_sys.h no longer includes soc/soc.h
3. freertos/portmacro.h no longer includes soc/soc_memory_layout.h

some peripheral headers no longer includes their hw related headers, e.g. rom/gpio.h no longer includes soc/gpio_pins.h and soc/gpio_reg.h

BREAKING CHANGE
2019-04-16 13:21:15 +08:00
Renz Christian Bagaporo
90ee405afd ldgen: update component linker fragment files 2019-04-04 15:57:34 +08:00
morris
dbdb299bb1 create xtensa component
1. move xtensa specific files out of esp32 component
2. merge xtensa-debug-module component into xtensa
2019-03-27 20:24:28 +08:00
morris
a2f07b0806 move common include files from esp32 into esp_common 2019-03-26 11:57:03 +08:00
morris
c159984264 separate rom from esp32 component to esp_rom
1. separate rom include files and linkscript to esp_rom
2. modefiy "include rom/xxx.h" to "include esp32/rom/xxx.h"
3. Forward compatible
4. update mqtt
2019-03-21 18:51:45 +08:00
Ivan Grokhotkov
106dc05903 Merge branch 'feature/specify_includes_belonging_esp32' into 'master'
move esp32 chip specific includes to esp32/xxx.h

See merge request idf/esp-idf!4534
2019-03-21 18:34:08 +08:00
morris
956c25dedd move esp32 chip specific includes to esp32/xxx.h 2019-03-18 17:14:05 +08:00
morris
fae39dc326 merge esp_flash_data_types into esp_flash_partitions 2019-03-18 08:51:55 +00:00
Mahavir Jain
16adb9d62a spi_flash: add test case for stale read issue on memory mapped partition 2019-03-13 05:38:01 +00:00
Mahavir Jain
2752654043 spi_flash: fix stale read issue for memory mapped partition
On flash program operation (either erase or write), if corresponding address has
cache mapping present then cache is explicitly flushed (for both pro and app cpu)

Closes https://github.com/espressif/esp-idf/issues/2146
2019-03-13 05:38:01 +00:00
Angus Gratton
961e433395 Merge branch 'bugfix/spi_flash_exclude_encrypted' into 'master'
esp_partition: disable encrypted reads/writes if flash encryption is disabled

See merge request idf/esp-idf!4099
2019-03-13 13:15:24 +08:00
Konstantin Kondrashov
e916cf52a3 bootloader: Add support of anti-rollback
Added:
* set a secure version in app/bootloader.
* description anti-rollback to ota part
* emulate the secure_version write and read operations
* efuse_em partition.
* a description about a rollback for native_ota_example.

Closes: TW26335
2019-02-14 18:51:43 +08:00
Roland Dobai
37126d3451 Correct Kconfigs according to the coding style 2019-01-29 13:37:01 +01:00
Ivan Grokhotkov
bf35ef1ce7 esp_partition: disable encrypted reads/writes if flash encryption is disabled
Saves 400 bytes of IRAM.
2019-01-10 21:51:09 +08:00
Ivan Grokhotkov
a46b884a14 Merge branch 'feature/unit_test_example' into 'master'
Move Unity into components, add unit test example

See merge request idf/esp-idf!3562
2018-11-19 18:35:54 +08:00
Ivan Grokhotkov
6091021e83 unity: separate common and IDF specific functionality
New unity component can be used for testing other applications.
Upstream version of Unity is included as a submodule.
Utilities specific to ESP-IDF unit tests (partitions, leak checking
setup/teardown functions, etc) are kept only in unit-test-app.
Kconfig options are added to allow disabling certain Unity features.
2018-11-19 12:36:31 +08:00
Renz Bagaporo
63411fc556 tools: implement linker script generation 2018-11-16 12:42:02 +08:00
Alexey Gerenkov
78a7a152d1 esp32: Fixes freezing core dump process when flash write address checks are enabled 2018-11-15 06:13:48 +00:00
Renz Bagaporo
cc774111bf cmake: Add support for test build 2018-10-20 12:07:24 +08:00
Mahavir Jain
b3aff63db4 app_update: fix intermittent failure with firmware updates
Routine `spi_flash_cache2phys` sometimes return incorrect value,
resulting in failure in getting currently running ota partition.
This in turn aborts firmware update process.This issue was more
prominent with SPIRAM enabled cases.

Fix ensures proper cache guards during `spi_flash_cache2phys`, and
also for few other similar APIs.

In addition, `esp_ota_get_running_partition` has also been optimized
to save currently running partition for subsequent invocations.

Fixes https://github.com/espressif/esp-idf/issues/2451
2018-10-18 04:38:31 +00:00
Sagar Bijwe
48fccbf5dd nvs_flash: Add support for nvs encryption 2018-09-24 11:25:21 +05:30
Renz Christian Bagaporo
d9939cedd9 cmake: make main a component again 2018-09-11 09:44:12 +08:00
Angus Gratton
b355854d4d Merge branch 'master' into feature/cmake 2018-09-05 10:35:04 +08:00
Mahavir Jain
8227db4f5e spi_flash: fix erase_range for block erase check
Erase in block (64k) as much as possible, before falling back
to sector (4k) erase.

Signed-off-by: Mahavir Jain <mahavir@espressif.com>
2018-08-29 12:04:32 +00:00
Angus Gratton
ff2404a272 Merge branch 'master' into feature/cmake 2018-08-16 17:14:17 +10:00
Konstantin Kondrashov
117c79eae5 app_update: Add API for getting sha256_of_partition
Added bootloader_common_get_sha256_of_partition() and esp_partition_get_sha256() - get or calculate SHA-256
digest for app and data partitions.
Added bootloader_sha256_hex_to_str() - helps to print SHA-256 digest
Added esp_partition_check_identity() - compares two partitions by SHA-256 digest

Refactoring a function esp_image_load() in bootloader space to esp_image_verify() and
bootloader_load_image(). Old name function esp_image_load is deprecated
and will remove in V4.0 version.

spi_flash/sim: Fix error test_host. Add stub for bootloader_common_get_sha256_of_partition in sim/stubs
2018-08-13 13:59:07 +05:00
Angus Gratton
7ea4db72de Merge branch 'bugfix/wl_encryption' into 'master'
Bugfix: WL works with encrypted flash

See merge request idf/esp-idf!2530
2018-08-01 15:05:47 +08:00
Ivan Grokhotkov
79e7f02286 spi_flash: allocate mmap pages array in internal memory
* spi_flash_mmap_pages needs pages array to be in internal memory.
  Document and check this.

* Fix a bug that spi_flash_mmap did not allocate pages array in
  internal memory.

* Minor style fixes: const-ify pages argument of spi_flash_mmap, add
  spaces around operators, mark output arguments with [out].

Closes https://github.com/espressif/esp-idf/issues/2229.
2018-07-31 13:11:04 +03:00
Dmitry
6a950d6a17 Build test applicatoin on host failer fixed.
Make host tests compilible.
2018-07-31 08:45:43 +03:00
Dmitry
f05f3fbde8 Added test for version update from V1 to V2. Problems for tests on host are fixed. Random function changed to esp_random() 2018-07-31 08:45:42 +03:00
Renz Bagaporo
70e68c99d3 Modifications for fs profiling tool 2018-07-23 05:24:33 +00:00
Angus Gratton
a67d5d89e0 Replace all DOS line endings with Unix
Command run was:
git ls-tree -r HEAD --name-only | xargs dos2unix
2018-07-12 19:10:37 +08:00
Ivan Grokhotkov
59c96ae331 Merge branch 'bugfix/spi_flash_deadlock' into 'master'
spi_flash: raise priority of the task performing spi_flash operation

See merge request idf/esp-idf!2609
2018-07-02 18:39:16 +08:00
Anton Maklakov
f42b91fe46 spi_flash: fix errors for GCC 8 support
components/spi_flash/partition.c: In function 'load_partitions':
components/spi_flash/partition.c:179:66: error: argument to 'sizeof' in 'strncpy' call is the same expression as the source; did you mean to use the size of the destination? [-Werror=sizeof-pointer-memaccess]
         strncpy(item->info.label, (const char*) it->label, sizeof(it->label));
                                                                  ^
2018-07-02 09:05:00 +00:00
Ivan Grokhotkov
f9f2937694 spi_flash: raise priority of the task performing spi_flash operation
The fix is for the situation when cache disabling mechanism causes
a deadlock with user tasks. Situation is as follows:

1. spi_flash operation is started from low-priority task on CPU0
2. It uses IPC to wake up high-priority IPC1 task on CPU1, preventing
   all other tasks on CPU1 from running. This is needed to safely
   disable the cache.
3. While the task which started spi_flash operation is waiting for IPC1
   task to acknowledge that CPU1 is not using cache anymore, it is
   preempted by a higher priority application task ("app0").
4. Task app0 busy-waits for some operation on CPU1 to complete. But
   since application tasks are blocked out by IPC1 task, this never
   happens. Since app0 is busy-waiting, the task doing spi flash
   operation never runs.

The more or less logical soltion to the problem would be to also do
cache disabling on CPU0 and the SPI flash operation itself from IPC0
task. However IPC0 task stack would need to be increased to allow doing
SPI flash operation (and IPC1 stack as well). This would waste some
memory. An alternative approach adopted in this fix is to call FreeRTOS
functions to temporary increase the priority of SPI flash operation task
to the same level as the IPC task.

Fixes https://github.com/espressif/arduino-esp32/issues/740
Fixes https://github.com/espressif/esp-idf/issues/1157
2018-07-01 20:44:42 +08:00