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kobs-ng: Add support for overriding size 

By default kobs-ng will use the size of /dev/mtd0 for the IMX bootstreams.
This patch allows overriding that size in order to reserve space at the end
of the mtd partition for u-boot.img in the case of using an SPL bootloader.

For example, to flash an SPL bootloader that loads u-boot.img from 0xe0000
(14MB) offset in a 16MB /dev/mtd0:

  kobs-ng init -v -x --search_exponent=1 --chip_0_size=0xe00000 SPL
  nandwrite --start=0xe00000 --pad /dev/mtd0 u-boot.img

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

SVN-Revision: 40532
This commit is contained in:
Luka Perkov 2014-04-19 21:39:09 +00:00
parent b58e65f2ee
commit 350dd0f9ac
2 changed files with 44 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
package/boot/kobs-ng/Makefile
View File

@ -1,5 +1,5 @@
#
# Copyright (C) 2013 OpenWrt.org
# Copyright (C) 2013-2014 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=kobs-ng
PKG_VERSION:=3.0.35-4.0.0
PKG_RELEASE:=1
PKG_RELEASE:=2
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=http://repository.timesys.com/buildsources/k/kobs-ng/kobs-ng-$(PKG_VERSION)/

42
package/boot/kobs-ng/patches/002-add-init-size-param.patch Normal file
View File

@ -0,0 +1,42 @@
--- a/src/main.c
+++ b/src/main.c
@@ -94,6 +94,7 @@ void usage(void)
" [KOBS] boot structures config options\n"
" --chip_0_device_path=<path> .......... Device of boot (default /dev/mtd0)\n"
" --chip_1_device_path=<path> .......... The second chip in case of multichip NAND\n"
+ " --chip_0_size=<size> ................. Override size of chip_0 device\n"
" --search_exponent=<value> ............ NCB field (default 2)\n"
" --data_setup_time=<value> ............ NCB field (default 80)\n"
" --data_hold_time=<value> ............. NCB field (default 60)\n"
--- a/src/mtd.c
+++ b/src/mtd.c
@@ -716,6 +716,11 @@ struct mtd_data *mtd_open(const struct m
goto out;
}
+ /* override MTD size */
+ if (md->cfg.chip_0_size) {
+ miu->size = md->cfg.chip_0_size;
+ }
+
/* verify it's a nand */
if (miu->type != MTD_NANDFLASH) {
fprintf(stderr, "mtd: device %s not NAND\n", mp->name);
@@ -2914,7 +2919,7 @@ static const struct {
} mtd_int_args[] = {
ARG_IGNORE(chip_count),
ARG_IGNORE(chip_0_offset),
- ARG_IGNORE(chip_0_size),
+ ARG(chip_0_size),
ARG_IGNORE(chip_1_offset),
ARG_IGNORE(chip_1_size),
ARG(search_exponent),
@@ -3107,7 +3112,7 @@ void mtd_cfg_dump(struct mtd_config *cfg
// Pd(chip_count);
Ps(chip_0_device_path);
// Pd(chip_0_offset);
-// Pd(chip_0_size);
+ Pd(chip_0_size);
Ps(chip_1_device_path);
// Pd(chip_1_offset);
// Pd(chip_1_size);