Commit Graph

19 Commits

Author SHA1 Message Date
jingli
236bd27134 further fix spi flash/ram current leakage
Currently, we pull up cs io for spi flash/ram to reduce current leakage during
light sleep. But some kind of spi flash/ram chip need all io pull up. Otherwise,
current leakage will still exist.
2022-07-28 13:11:55 +08:00
Ivan Grokhotkov
096c013675
esp_rom: remove functions which depend on sizeof(struct stat)
...and all their callers.

With the upcoming switch from sizeof(time_t)==4 to sizeof(time_t)==8,
sizeof(struct stat) is also increasing.

A few newlib functions present in ROM allocate 'struct stat' on the
stack and call _fstat_r on this structure. The implementation of
fstat is provided in ESP-IDF. This implementation will often do
memset(st, 0, sizeof(*st)), where st is 'struct stat*', before setting
some fields of this structure. If IDF is built with sizeof(st)
different from sizeof(st) which ROM was built with, this will lead
to an out-of-bounds write and a stack corruption.

This commit removes problematic ROM functions from the linker script.
Here are the functions which allocate 'struct stat':
* _isatty_r (in ROM)
* __swhatbuf_r, called by __smakebuf_r, called by __swsetup_r and
  __srefill_r (in ROM)
* _fseeko_r (not in ROM)
* glob2 (not in ROM)
* _gettemp (not in ROM)

As a result, these functions are used from libc.a, and use correct
size of 'stat' structure.

Closes https://github.com/espressif/esp-idf/issues/7980
2022-02-07 11:23:59 +01:00
Sachin Parekh
41973b761e newlib: Override __assert and __assert_func
Default assert implementation calls fiprintf, which tries to acquire a
lock and fails if it is executing in critical section or ISR
2021-08-05 11:09:22 +05:30
morris
1560d6f1ba soc: add reset reasons in soc component 2021-07-13 10:45:38 +08:00
Fu Hanxi
e4e375f488 fix: add spi_flash.h for s2, s3, c3 targets in cpu_start.c
update s2, s3, c3 ld files spi_flash_attach to esp_rom_spiflash_attach
2021-01-27 12:35:49 +08:00
Ivan Grokhotkov
b7b9ea4361 newlib: add _RETARGETABLE_LOCKING support
This adds support for the retargetable locking implementation in
newlib 3. This feature will be enabled in the future toolchain builds.
With the present version of the toolchain, this code doesn't get used.

When _RETARGETABLE_LOCKING gets enabled, newlib locking implementation
will be modified as follows:

- Legacy ESP-specific _lock_xxx functions are preserved. This is done
  because ROM copies of newlib in ESP32 and ESP32-S2 rely on these
  functions through the function pointer table. Also there is some
  code in IDF which still uses these locking functions.

- New __retarget_lock_xxx functions are introduced. Newlib expects
  these functions to be provided by the system. These functions work
  pretty much the same way as the ESP-specific _lock_xxx functions,
  except one major difference: _lock_acquire receives the lock pointer
  by value, and as such doesn't support lazy initialization.

- Static locks used by newlib are now explicitly initialized at
  startup. Since it is unlikely that these static locks are used at
  the same time, all compatible locks are set to point to the same
  mutex. This saves a bit of RAM. Note that there are still many locks
  not initialized statically, in particular those inside FILE
  structures.
2020-12-29 16:18:04 +01:00
morris
c39476d699 esp_rom: added esp_rom_install_uart_printf 2020-12-11 11:45:10 +08:00
Angus Gratton
66fb5a29bb Whitespace: Automated whitespace fixes (large commit)
Apply the pre-commit hook whitespace fixes to all files in the repo.

(Line endings, blank lines at end of file, trailing whitespace)
2020-11-11 07:36:35 +00:00
morris
2917651478 esp_rom: extract common ets apis into esp_rom_sys.h 2020-07-27 15:27:01 +08:00
morris
ab0537c079 esp_rom: extract common MD5 hash apis into esp_rom_md5.h 2020-07-21 17:01:28 +08:00
morris
345606e7f3 esp_rom: extract common uart apis into esp_rom_uart.h 2020-07-17 16:00:59 +08:00
morris
458b14a8ea esp_rom: extract common efuse apis into esp_rom_efuse.h 2020-07-15 10:40:50 +08:00
morris
a4d0033c03 esp_rom: extract common GPIO apis into esp_rom_gpio.h 2020-07-07 11:40:19 +08:00
Ivan Grokhotkov
4901917ea3 esp_rom: add USB related headers from the ROM code 2020-06-24 15:50:51 +02:00
morris
a34409cffc esp_rom: extract common CRC apis into esp_rom_crc.h 2020-06-23 16:40:14 +08:00
michael
7a3f21636f spi_flash: fix the reading issue using the ROM functions in the ROM 2020-02-26 11:12:09 +08:00
Ivan Grokhotkov
16e63f6a3f esp32s2: esp_rom: separate nano formatting functions, fix newlib tests 2020-01-23 18:07:37 +01:00
morris
405b0e7f06 esp_rom: splict libgcc and libc outof rom.ld bundle file 2020-01-23 00:27:47 +08:00
morris
e30cd361a8 global: rename esp32s2beta to esp32s2 2020-01-22 12:14:38 +08:00