diff options
Diffstat (limited to 'target/linux/generic/backport-4.9/060-0004-mtd-bcm47xxpart-move-TRX-parsing-code-to-separated-f.patch')
-rw-r--r-- | target/linux/generic/backport-4.9/060-0004-mtd-bcm47xxpart-move-TRX-parsing-code-to-separated-f.patch | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/target/linux/generic/backport-4.9/060-0004-mtd-bcm47xxpart-move-TRX-parsing-code-to-separated-f.patch b/target/linux/generic/backport-4.9/060-0004-mtd-bcm47xxpart-move-TRX-parsing-code-to-separated-f.patch deleted file mode 100644 index 999f544d3b..0000000000 --- a/target/linux/generic/backport-4.9/060-0004-mtd-bcm47xxpart-move-TRX-parsing-code-to-separated-f.patch +++ /dev/null @@ -1,180 +0,0 @@ -From b522d7b0ebe3539340c2a6d46d787ae3d33bcb92 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> -Date: Tue, 10 Jan 2017 23:15:24 +0100 -Subject: [PATCH] mtd: bcm47xxpart: move TRX parsing code to separated function -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -This change simplifies main parsing loop logic a bit. In future it may -be useful for moving TRX support to separated module / parser (if we -implement support for them at some point). -Finally parsing TRX at the end puts us in a better position as we have -better flash layout knowledge. It may be useful e.g. if it appears there -is more than 1 TRX partition. - -Signed-off-by: Rafał Miłecki <rafal@milecki.pl> -Acked-by: Marek Vasut <marek.vasut@gmail.com> -Signed-off-by: Brian Norris <computersforpeace@gmail.com> ---- - drivers/mtd/bcm47xxpart.c | 121 ++++++++++++++++++++++++++++------------------ - 1 file changed, 74 insertions(+), 47 deletions(-) - ---- a/drivers/mtd/bcm47xxpart.c -+++ b/drivers/mtd/bcm47xxpart.c -@@ -83,6 +83,67 @@ out_default: - return "rootfs"; - } - -+static int bcm47xxpart_parse_trx(struct mtd_info *master, -+ struct mtd_partition *trx, -+ struct mtd_partition *parts, -+ size_t parts_len) -+{ -+ struct trx_header header; -+ size_t bytes_read; -+ int curr_part = 0; -+ int i, err; -+ -+ if (parts_len < 3) { -+ pr_warn("No enough space to add TRX partitions!\n"); -+ return -ENOMEM; -+ } -+ -+ err = mtd_read(master, trx->offset, sizeof(header), &bytes_read, -+ (uint8_t *)&header); -+ if (err && !mtd_is_bitflip(err)) { -+ pr_err("mtd_read error while reading TRX header: %d\n", err); -+ return err; -+ } -+ -+ i = 0; -+ -+ /* We have LZMA loader if offset[2] points to sth */ -+ if (header.offset[2]) { -+ bcm47xxpart_add_part(&parts[curr_part++], "loader", -+ trx->offset + header.offset[i], 0); -+ i++; -+ } -+ -+ if (header.offset[i]) { -+ bcm47xxpart_add_part(&parts[curr_part++], "linux", -+ trx->offset + header.offset[i], 0); -+ i++; -+ } -+ -+ if (header.offset[i]) { -+ size_t offset = trx->offset + header.offset[i]; -+ const char *name = bcm47xxpart_trx_data_part_name(master, -+ offset); -+ -+ bcm47xxpart_add_part(&parts[curr_part++], name, offset, 0); -+ i++; -+ } -+ -+ /* -+ * Assume that every partition ends at the beginning of the one it is -+ * followed by. -+ */ -+ for (i = 0; i < curr_part; i++) { -+ u64 next_part_offset = (i < curr_part - 1) ? -+ parts[i + 1].offset : -+ trx->offset + trx->size; -+ -+ parts[i].size = next_part_offset - parts[i].offset; -+ } -+ -+ return curr_part; -+} -+ - static int bcm47xxpart_parse(struct mtd_info *master, - const struct mtd_partition **pparts, - struct mtd_part_parser_data *data) -@@ -93,9 +154,7 @@ static int bcm47xxpart_parse(struct mtd_ - size_t bytes_read; - uint32_t offset; - uint32_t blocksize = master->erasesize; -- struct trx_header *trx; - int trx_part = -1; -- int last_trx_part = -1; - int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, }; - int err; - -@@ -182,54 +241,14 @@ static int bcm47xxpart_parse(struct mtd_ - - /* TRX */ - if (buf[0x000 / 4] == TRX_MAGIC) { -- if (BCM47XXPART_MAX_PARTS - curr_part < 4) { -- pr_warn("Not enough partitions left to register trx, scanning stopped!\n"); -- break; -- } -- -- trx = (struct trx_header *)buf; -+ struct trx_header *trx; - - trx_part = curr_part; - bcm47xxpart_add_part(&parts[curr_part++], "firmware", - offset, 0); - -- i = 0; -- /* We have LZMA loader if offset[2] points to sth */ -- if (trx->offset[2]) { -- bcm47xxpart_add_part(&parts[curr_part++], -- "loader", -- offset + trx->offset[i], -- 0); -- i++; -- } -- -- if (trx->offset[i]) { -- bcm47xxpart_add_part(&parts[curr_part++], -- "linux", -- offset + trx->offset[i], -- 0); -- i++; -- } -- -- /* -- * Pure rootfs size is known and can be calculated as: -- * trx->length - trx->offset[i]. We don't fill it as -- * we want to have jffs2 (overlay) in the same mtd. -- */ -- if (trx->offset[i]) { -- const char *name; -- -- name = bcm47xxpart_trx_data_part_name(master, offset + trx->offset[i]); -- bcm47xxpart_add_part(&parts[curr_part++], -- name, -- offset + trx->offset[i], -- 0); -- i++; -- } -- -- last_trx_part = curr_part - 1; -- - /* Jump to the end of TRX */ -+ trx = (struct trx_header *)buf; - offset = roundup(offset + trx->length, blocksize); - /* Next loop iteration will increase the offset */ - offset -= blocksize; -@@ -307,9 +326,17 @@ static int bcm47xxpart_parse(struct mtd_ - parts[i + 1].offset : master->size; - - parts[i].size = next_part_offset - parts[i].offset; -- if (i == last_trx_part && trx_part >= 0) -- parts[trx_part].size = next_part_offset - -- parts[trx_part].offset; -+ } -+ -+ /* If there was TRX parse it now */ -+ if (trx_part >= 0) { -+ int num_parts; -+ -+ num_parts = bcm47xxpart_parse_trx(master, &parts[trx_part], -+ parts + curr_part, -+ BCM47XXPART_MAX_PARTS - curr_part); -+ if (num_parts > 0) -+ curr_part += num_parts; - } - - *pparts = parts; |