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Implement load_image in terms of IO abstraction

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The modified implementation uses the IO abstraction rather than
making direct semi-hosting calls.  The semi-hosting driver is now
registered for the FVP platform during initialisation of each boot
stage where it is used.  Additionally, the FVP platform includes a
straightforward implementation of 'plat_get_image_source' which
provides a generic means for the 'load_image' function to determine
how to access the image data.

Change-Id: Ia34457b471dbee990c7b3c79de7aee4ceea51aa6
This commit is contained in:
James Morrissey 2014-02-10 17:04:32 +00:00 • committed by Dan Handley
parent f2f9bb5e71
commit 9d72b4ea9c
11 changed files with 479 additions and 45 deletions
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4
lib/semihosting/semihosting.c
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@ -120,7 +120,7 @@ int semihosting_file_read(int file_handle, int *length, void *buffer)
return result;
}
int semihosting_file_write(int file_handle, int *length, void *buffer)
int semihosting_file_write(int file_handle, int *length, const void *buffer)
{
smh_file_read_write_block write_block;
@ -128,7 +128,7 @@ int semihosting_file_write(int file_handle, int *length, void *buffer)
return -EINVAL;
write_block.handle = file_handle;
write_block.buffer = buffer;
write_block.buffer = (void *)buffer;
write_block.length = *length;
*length = semihosting_call(SEMIHOSTING_SYS_WRITE,