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drivers: flash: add API to access SFDP region of serial flash devices

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Some flash drivers are capable of issuing a JESD216 READ_SFDP command
to read serial flash discoverable parameters.  Allow applications and
utilities access to that capability where it's supported.

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
This commit is contained in:
Peter A. Bigot 2020-06-03 19:55:54 -05:00 • committed by Anas Nashif
commit 4eb8d9dd9e
4 changed files with 67 additions and 1 deletions
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15
drivers/flash/flash_handlers.c
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@ -72,4 +72,17 @@ static inline size_t z_vrfy_flash_get_page_count(struct device *dev)
}
#include <syscalls/flash_get_page_count_mrsh.c>
#endif
#endif /* CONFIG_FLASH_PAGE_LAYOUT */
#ifdef CONFIG_FLASH_JESD216_API
static inline int z_vrfy_flash_sfdp_read(struct device *dev, off_t offset,
void *data, size_t len)
{
Z_OOPS(Z_SYSCALL_DRIVER_FLASH(dev, sfdp_read));
Z_OOPS(Z_SYSCALL_MEMORY_WRITE(data, len));
return z_impl_flash_sfdp_read(dev, offset, data, len);
}
#include <syscalls/flash_sfdp_read.c>
#endif /* CONFIG_FLASH_JESD216_API */