From 4f0d1a2aea08b0dd62b0a1d82b36967470897101 Mon Sep 17 00:00:00 2001 From: Siva Durga Prasad Paladugu Date: Mon, 26 May 2014 19:18:37 +0530 Subject: [PATCH] fat: Define MAX_CLUSTSIZE using CONFIG_FS_FAT_MAX_CLUSTSIZE Define the MAX_CLUSTSIZE to default of 65536 only if CONFIG_FS_FAT_MAX_CLUSTSIZE is not defined. This option has been provided to save memory in some memory constrained cases. Signed-off-by: Siva Durga Prasad Paladugu Acked-by: Michal Simek --- README | 6 ++++++ include/fat.h | 6 +++++- 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/README b/README index 6edb2e7..256d6ec 100644 --- a/README +++ b/README @@ -1637,6 +1637,12 @@ CBFS (Coreboot Filesystem) support filesystem. Available commands are cbfsinit, cbfsinfo, cbfsls and cbfsload. +- FAT(File Allocation Table) filesystem cluster size: + CONFIG_FS_FAT_MAX_CLUSTSIZE + + Define the max cluster size for fat operations else + a default value of 65536 will be defined. + - Keyboard Support: CONFIG_ISA_KEYBOARD diff --git a/include/fat.h b/include/fat.h index 81d9790..63cf787 100644 --- a/include/fat.h +++ b/include/fat.h @@ -18,7 +18,11 @@ #define VFAT_MAXSEQ 9 /* Up to 9 of 13 2-byte UTF-16 entries */ #define PREFETCH_BLOCKS 2 -#define MAX_CLUSTSIZE 65536 +#ifndef CONFIG_FS_FAT_MAX_CLUSTSIZE +#define CONFIG_FS_FAT_MAX_CLUSTSIZE 65536 +#endif +#define MAX_CLUSTSIZE CONFIG_FS_FAT_MAX_CLUSTSIZE + #define DIRENTSPERBLOCK (mydata->sect_size / sizeof(dir_entry)) #define DIRENTSPERCLUST ((mydata->clust_size * mydata->sect_size) / \ sizeof(dir_entry)) -- 2.7.4