xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[MTD][NOR] Add physical address to point() method

Browse Source 
Adding the ability to get a physical address from point() in addition
to virtual address.  This physical address is required for XIP of
userspace code from flash.

Signed-off-by: Jared Hulbert <jaredeh@gmail.com>
Reviewed-by: Jörn Engel <joern@logfs.org>
Acked-by: Nicolas Pitre <nico@cam.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
Jared Hulbert
2008-04-29 23:26:49 -07:00
committed by David Woodhouse
parent 27c72b040c
commit a98889f3d8
12 changed files with 77 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/mtd/devices/phram.c
View File

@@ -57,20 +57,21 @@ static int phram_erase(struct mtd_info *mtd, struct erase_info *instr)
}
static int phram_point(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char **mtdbuf)
size_t *retlen, void **virt, resource_size_t *phys)
{
u_char *start = mtd->priv;
if (from + len > mtd->size)
return -EINVAL;
*mtdbuf = start + from;
/* can we return a physical address with this driver? */
if (phys)
return -EINVAL;
*virt = mtd->priv + from;
*retlen = len;
return 0;
}
static void phram_unpoint(struct mtd_info *mtd, u_char *addr, loff_t from,
size_t len)
static void phram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
{
}