[src/trunk]: src/sys/dev/nand Add support for dynamic flash partitions

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/24fe05dd5676
branches:  trunk
changeset: 827815:24fe05dd5676
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Mon Nov 13 17:36:39 2017 +0000

description:
Add support for dynamic flash partitions

diffstat:

 sys/dev/nand/nand.c |  18 ++++++++++++++++--
 sys/dev/nand/nand.h |   3 ++-
 2 files changed, 18 insertions(+), 3 deletions(-)

diffs (65 lines):

diff -r ae87945da76b -r 24fe05dd5676 sys/dev/nand/nand.c
--- a/sys/dev/nand/nand.c       Mon Nov 13 17:35:58 2017 +0000
+++ b/sys/dev/nand/nand.c       Mon Nov 13 17:36:39 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: nand.c,v 1.26 2017/11/09 21:50:15 jmcneill Exp $       */
+/*     $NetBSD: nand.c,v 1.27 2017/11/13 17:36:39 jmcneill Exp $       */
 
 /*-
  * Copyright (c) 2010 Department of Software Engineering,
@@ -34,7 +34,7 @@
 /* Common driver for NAND chips implementing the ONFI 2.2 specification */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: nand.c,v 1.26 2017/11/09 21:50:15 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: nand.c,v 1.27 2017/11/13 17:36:39 jmcneill Exp $");
 
 #include "locators.h"
 
@@ -188,8 +188,12 @@
        struct nand_chip *chip = &sc->sc_chip;
        struct flash_attach_args faa;
 
+       if (cf->cf_loc[FLASHBUSCF_DYNAMIC] != 0)
+               return 0;
+
        faa.flash_if = &nand_flash_if;
 
+       faa.partinfo.part_name = NULL;
        faa.partinfo.part_offset = cf->cf_loc[FLASHBUSCF_OFFSET];
 
        if (cf->cf_loc[FLASHBUSCF_SIZE] == 0) {
@@ -215,6 +219,16 @@
        return 1;
 }
 
+void
+nand_attach_mtdparts(device_t parent, const char *mtd_id, const char *cmdline)
+{
+       struct nand_softc *sc = device_private(parent);
+       struct nand_chip *chip = &sc->sc_chip;
+
+       flash_attach_mtdparts(&nand_flash_if, parent, chip->nc_size,
+           mtd_id, cmdline);
+}
+
 int
 nand_detach(device_t self, int flags)
 {
diff -r ae87945da76b -r 24fe05dd5676 sys/dev/nand/nand.h
--- a/sys/dev/nand/nand.h       Mon Nov 13 17:35:58 2017 +0000
+++ b/sys/dev/nand/nand.h       Mon Nov 13 17:36:39 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: nand.h,v 1.17 2017/11/09 21:50:15 jmcneill Exp $       */
+/*     $NetBSD: nand.h,v 1.18 2017/11/13 17:36:39 jmcneill Exp $       */
 
 /*-
  * Copyright (c) 2010 Department of Software Engineering,
@@ -468,6 +468,7 @@
 
 device_t nand_attach_mi(struct nand_interface *, device_t);
 void nand_init_interface(struct nand_interface *);
+void nand_attach_mtdparts(device_t, const char *, const char *);
 
 /* controller drivers may use these functions to get info about the chip */
 void nand_read_id(device_t, uint8_t *, uint8_t *);