From f994693546274d3c690c89a736665f20c66f47f4 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Thu, 26 Mar 2015 19:46:01 +0000 Subject: xburst: Update to 3.18 Update the xburst target to kernel version 3.18 and also remove the broken 3.10 support. Signed-off-by: Lars-Peter Clausen git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45031 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- ...-NAND-Optimize-NAND_ECC_HW_OOB_FIRST-read.patch | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 target/linux/xburst/patches-3.18/002-NAND-Optimize-NAND_ECC_HW_OOB_FIRST-read.patch (limited to 'target/linux/xburst/patches-3.18/002-NAND-Optimize-NAND_ECC_HW_OOB_FIRST-read.patch') diff --git a/target/linux/xburst/patches-3.18/002-NAND-Optimize-NAND_ECC_HW_OOB_FIRST-read.patch b/target/linux/xburst/patches-3.18/002-NAND-Optimize-NAND_ECC_HW_OOB_FIRST-read.patch new file mode 100644 index 0000000000..bba9f0bb50 --- /dev/null +++ b/target/linux/xburst/patches-3.18/002-NAND-Optimize-NAND_ECC_HW_OOB_FIRST-read.patch @@ -0,0 +1,48 @@ +From 98d33db1c87e2447b9b203399d2f995e05ecdb52 Mon Sep 17 00:00:00 2001 +From: Lars-Peter Clausen +Date: Sat, 26 Feb 2011 15:30:07 +0100 +Subject: [PATCH 2/7] NAND: Optimize NAND_ECC_HW_OOB_FIRST read + +Avoid sending unnecessary READ commands to the chip. +--- + drivers/mtd/nand/nand_base.c | 17 +++++++++++++---- + 1 file changed, 13 insertions(+), 4 deletions(-) + +diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c +index 5b5c627..4c8d646 100644 +--- a/drivers/mtd/nand/nand_base.c ++++ b/drivers/mtd/nand/nand_base.c +@@ -1360,9 +1360,16 @@ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd, + unsigned int max_bitflips = 0; + + /* Read the OOB area first */ +- chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); +- chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); +- chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page); ++ /* Read the OOB area first */ ++ if (mtd->writesize > 512) { ++ chip->cmdfunc(mtd, NAND_CMD_READ0, mtd->writesize, page); ++ chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); ++ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, 0, -1); ++ } else { ++ chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page); ++ chip->read_buf(mtd, chip->oob_poi, mtd->oobsize); ++ chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page); ++ } + + for (i = 0; i < chip->ecc.total; i++) + ecc_code[i] = chip->oob_poi[eccpos[i]]; +@@ -1575,7 +1582,9 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, + __func__, buf); + + read_retry: +- chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page); ++ if (chip->ecc.mode != NAND_ECC_HW_OOB_FIRST) { ++ chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page); ++ } + + /* + * Now read the page into the buffer. Absent an error, +-- +1.7.10.4 + -- cgit v1.2.3