Signed-off-by: Tom Rini <trini@konsulko.com>

If generating a script image and no datafile has been passed in, mkimage
dies with SIGSEGV:

  #0  __strchr_sse2 () at ../sysdeps/x86_64/multiarch/../strchr.S:32
  #1  0x0000000000403818 in main
      at tools/mkimage.c:503

Add explicit test for datafile to fix this.

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>

The size of 'filebuf' was not increased as more and more bytes are read
from stdin, but 'filebuf' was always reallocated to the same fix size.
This works as long as only less bytes than the initial buffer size come
in, for more input this will segfault. (It actually does, I tested
that.) So for each loop cycle the buffer size has to be increased by the
number of bytes we want to read.

Signed-off-by: Alexander Dahl <ada@thorsis.com>

On success read() returns the number of bytes read or zero for EOF. On
error -1 is returned and errno is set, so the right way to test if read
had failed is to test the return value instead of errno.

Signed-off-by: Alexander Dahl <ada@thorsis.com>

Uart status register is named USART_ISR on STM32F7, STM32H7
and STM32MP1 SoCs family, but USART_SR only on STM32F4 SoCs.

Use USART_ISR_ prefix instead of USART_SR_ .

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Enable uart overrun feature which allows to benefits of uart
FIFO usage.

Previously overrun management was disabled, this has to effect
to bypassed the uart FIFO usage even if FIFO was enabled.
In particular configuration, for example when video console is
enabled, copy/pasting a long command line in console results in
corruption. This is due to the fact that a lot of time is consumed
in flushing the cache during frame buffer update, so uart chars are
not read fast enough.

By using uart FIFO and managing overrun, long command line can by
copy/paste in console without being corrupted.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

If SPL serial support is disabled nothing brings in sprintf, snprintf
or simple_strtoul:

  env/built-in.o: In function `regex_callback':
  env/attr.c:128: undefined reference to `sprintf'
  disk/built-in.o: In function `blk_get_device_by_str':
  disk/part.c:386: undefined reference to `simple_strtoul'
  disk/part.c:395: undefined reference to `simple_strtoul'
  disk/built-in.o: In function `blk_get_device_part_str':
  disk/part.c:522: undefined reference to `simple_strtoul'
  disk/built-in.o: In function `part_set_generic_name':
  disk/part.c:704: undefined reference to `sprintf'
  drivers/built-in.o: In function `init_peripheral_ep':
  drivers/usb/musb-new/musb_gadget.c:1826: undefined reference to `sprintf'
  drivers/built-in.o: In function `musb_core_init':
  drivers/usb/musb-new/musb_core.c:1451: undefined reference to `snprintf'

Add those dependencies here.

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>

We had two implementations of __assert_failed which were almost identical,
combine them into one.

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>