On 07-04-2025 21:47, Michael Nazzareno Trimarchi wrote: Hi MIke
On Mon, Apr 7, 2025 at 3:42 PM Mike Looijmans <mike.looijm...@topic.nl<mailto:mike.looijm...@topic.nl>> wrote: ping? Maybe I should have added to the description that the Linux kernel allows MTD partitions to specify a size "0" in the device-tree to mean "the remainder". This patch makes u-boot compatible with the kernel's MTD partitions. U-boot MTDPARTS also supported this, but it's missing in the device-tree parser. Please expand your commit message . Add an example where is defined this way in linux kernel and add your example. I found out that is used a lot in omap3 platform but please point me to some recent board if you know I'll send a v2. Indeed the OMAP3 boards are the quickest to find examples. Obviously, you shouldn't find any example in the u-boot tree because it didn't work... I came across this because I wanted to migrate the topic_miami boards away from MTDPARTS but the "fixed-partitions" did not work as expected when using the same devicetree for kernel and u-boot. Otherwise topic-miami would have been the example you asked for... Michael M. On 25-03-2025 16:52, Mike Looijmans wrote:
Flash partitions may specify MTDPART_SIZ_FULL (=0) as the size of the partition to indicate "the remainder of the flash". Make this work with device-tree "fixed-partitions" as well. Signed-off-by: Mike Looijmans <mike.looijm...@topic.nl<mailto:mike.looijm...@topic.nl>> --- drivers/mtd/mtdpart.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 88094b81e7a..5284890bd88 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -910,11 +910,13 @@ int add_mtd_partitions_of(struct mtd_info *master) continue; offset = ofnode_get_addr_size_index_notrans(child, 0, &size); - if (offset == FDT_ADDR_T_NONE || !size) { - debug("Missing partition offset/size on \"%s\" partition\n", + if (offset == FDT_ADDR_T_NONE) { + debug("Missing partition offset on \"%s\" partition\n", master->name); continue; } + if (size == MTDPART_SIZ_FULL) + size = master->size - offset; part.name<http://part.name> = ofnode_read_string(child, "label"); if (!part.name<http://part.name>)
-- Mike Looijmans System Expert TOPIC Embedded Products B.V. Materiaalweg 4, 5681 RJ Best The Netherlands T: +31 (0) 499 33 69 69 E: mike.looijm...@topic.nl<mailto:mike.looijm...@topic.nl> W: www.topic.nl<http://www.topic.nl> -- Michael Nazzareno Trimarchi Co-Founder & Chief Executive Officer M. +39 347 913 2170 mich...@amarulasolutions.com<mailto:mich...@amarulasolutions.com> __________________________________ Amarula Solutions BV Joop Geesinkweg 125, 1114 AB, Amsterdam, NL T. +31 (0)85 111 9172 i...@amarulasolutions.com<mailto:i...@amarulasolutions.com> www.amarulasolutions.com<http://www.amarulasolutions.com> -- Mike Looijmans System Expert TOPIC Embedded Products B.V. Materiaalweg 4, 5681 RJ Best The Netherlands T: +31 (0) 499 33 69 69 E: mike.looijm...@topic.nl<mailto:mike.looijm...@topic.nl> W: www.topic.nl<http://www.topic.nl>
