flash/cfi_flash: Use virtual sector start address, not phys
include/flash.h was commented to say that the address in
flash_info->start was a physical address. However, from u-boot's
point of view, and looking at most flash code, it makes more
sense for this to be a virtual address. So I corrected the
comment to indicate that this was a virtual address.
The only flash driver that was actually treating the address
as physical was the mtd/cfi_flash driver. However, this code
was using it inconsistently as it actually directly dereferenced
the "start" element, while it used map_physmem to get a
virtual address in other places. I changed this driver so
that the code which initializes the info->start field calls
map_physmem to get a virtual address, eliminating the need for
further map_physmem calls. The code is now consistent.
The *only* place a physical address should be used is when defining the
flash banks list that is used to initialize the flash_info struct,
usually found in the board config file.
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/include/flash.h b/include/flash.h
index 6e2981c..02c6a04 100644
--- a/include/flash.h
+++ b/include/flash.h
@@ -33,7 +33,7 @@
ulong size; /* total bank size in bytes */
ushort sector_count; /* number of erase units */
ulong flash_id; /* combined device & manufacturer code */
- ulong start[CONFIG_SYS_MAX_FLASH_SECT]; /* physical sector start addresses */
+ ulong start[CONFIG_SYS_MAX_FLASH_SECT]; /* virtual sector start address */
uchar protect[CONFIG_SYS_MAX_FLASH_SECT]; /* sector protection status */
#ifdef CONFIG_SYS_FLASH_CFI
uchar portwidth; /* the width of the port */