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fsutils/mkfatfs:Allow for configurable buffer alignment

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This commit is contained in:
David Sidrane 2021-11-22 12:56:52 -08:00 committed by Xiang Xiao
parent fd2289a8a2
commit 4e9921c9b2
2 changed files with 24 additions and 2 deletions
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9
fsutils/mkfatfs/Kconfig
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@ -10,3 +10,12 @@ config FSUTILS_MKFATFS
select BCH
---help---
Enables support for the mkfatfs utility
config MKFATFS_BUFFER_ALIGMENT
int "Buffer alignment"
default 0
depends on FSUTILS_MKFATFS
---help---
Enables alignment of the buffers used by the mkfatfs application
to N bytes. This may be needed for systems with cache or buffer
alignment constraints.

17
fsutils/mkfatfs/mkfatfs.c
View File

@ -38,6 +38,17 @@
#include "fat32.h"
#include "mkfatfs.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#if defined(CONFIG_MKFATFS_BUFFER_ALIGMENT) && \
CONFIG_MKFATFS_BUFFER_ALIGMENT > 0
# define fat_buffer_alloc(s) memalign(CONFIG_MKFATFS_BUFFER_ALIGMENT, (s))
#else
# define fat_buffer_alloc(s) malloc((s))
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
@ -337,9 +348,11 @@ int mkfatfs(FAR const char *pathname, FAR struct fat_format_s *fmt)
goto errout_with_driver;
}
/* Allocate a buffer that will be working sector memory */
/* Allocate a buffer that will be working sector memory
* Lets align it as needed
*/
var.fv_sect = (FAR uint8_t *)malloc(var.fv_sectorsize);
var.fv_sect = (FAR uint8_t *)fat_buffer_alloc(var.fv_sectorsize);
if (!var.fv_sect)
{
ferr("ERROR: Failed to allocate working buffers\n");