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authorStefan Roese <sr@denx.de>2010-08-13 09:36:36 +0200
committerStefan Roese <sr@denx.de>2010-08-18 09:09:00 +0200
commit70084df7125a0b67de707b999982ec67adfdc35c (patch)
tree5b000a06eb2ec9cef2a2b712f2b5e68ceffda762 /drivers/mtd
parentd77c7ac47e4ea750cc13c2f0ecc037ab7afa7964 (diff)
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cfi_flash: Cleanup flash_print_info()
This patch does the following: - Extract code to detect if sector is erased into function sector_erased(). - Because of this, we don't have variable declarations inside the sector loop in flash_print_info() - Change "return" to "break" in the "if (ctrlc()) statement: This fixes a problem with the resulting output. Before this patch the output was: Sector Start Addresses: FC000000 FC020000 FC040000 => With this patch it is now: Sector Start Addresses: FC000000 FC020000 FC040000 => Signed-off-by: Stefan Roese <sr@denx.de> Cc: Kim Phillips <kim.phillips@freescale.com> Cc: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/cfi_flash.c51
1 files changed, 27 insertions, 24 deletions
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 2157c02..1191ef0 100644
--- a/drivers/mtd/cfi_flash.c
+++ b/drivers/mtd/cfi_flash.c
@@ -1096,8 +1096,30 @@ int flash_erase (flash_info_t * info, int s_first, int s_last)
return rcode;
}
-/*-----------------------------------------------------------------------
- */
+#ifdef CONFIG_SYS_FLASH_EMPTY_INFO
+static int sector_erased(flash_info_t *info, int i)
+{
+ int k;
+ int size;
+ volatile unsigned long *flash;
+
+ /*
+ * Check if whole sector is erased
+ */
+ size = flash_sector_size(info, i);
+ flash = (volatile unsigned long *) info->start[i];
+ /* divide by 4 for longword access */
+ size = size >> 2;
+
+ for (k = 0; k < size; k++) {
+ if (*flash++ != 0xffffffff)
+ return 0; /* not erased */
+ }
+
+ return 1; /* erased */
+}
+#endif /* CONFIG_SYS_FLASH_EMPTY_INFO */
+
void flash_print_info (flash_info_t * info)
{
int i;
@@ -1162,33 +1184,14 @@ void flash_print_info (flash_info_t * info)
puts ("\n Sector Start Addresses:");
for (i = 0; i < info->sector_count; ++i) {
if (ctrlc())
- return;
+ break;
if ((i % 5) == 0)
- printf ("\n");
+ putc('\n');
#ifdef CONFIG_SYS_FLASH_EMPTY_INFO
- int k;
- int size;
- int erased;
- volatile unsigned long *flash;
-
- /*
- * Check if whole sector is erased
- */
- size = flash_sector_size(info, i);
- erased = 1;
- flash = (volatile unsigned long *) info->start[i];
- size = size >> 2; /* divide by 4 for longword access */
- for (k = 0; k < size; k++) {
- if (*flash++ != 0xffffffff) {
- erased = 0;
- break;
- }
- }
-
/* print empty and read-only info */
printf (" %08lX %c %s ",
info->start[i],
- erased ? 'E' : ' ',
+ sector_erased(info, i) ? 'E' : ' ',
info->protect[i] ? "RO" : " ");
#else /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
printf (" %08lX %s ",