layerscape: add 64b/32b target for ls1012ardb device

The QorIQ LS1012A processor, optimized for battery-backed or
USB-powered, integrates a single ARM Cortex-A53 core with a hardware
packet forwarding engine and high-speed interfaces to deliver
line-rate networking performance.
QorIQ LS1012A Reference Design System (LS1012ARDB) is a high-performance
development platform, with a complete debugging environment.
The LS1012ARDB board supports the QorIQ LS1012A processor and is
optimized to support the high-bandwidth DDR3L memory and
a full complement of high-speed SerDes ports.

LEDE/OPENWRT will auto strip executable program file while make. So we
need select CONFIG_NO_STRIP=y while make menuconfig to avoid the ppfe network
fiemware be destroyed, then run make to build ls1012ardb firmware.

The fsl-quadspi flash with jffs2 fs is unstable and arise some failed message.
This issue have noticed the IP owner for investigate, hope he can solve it
earlier. So the ls1012ardb now also provide a xx-firmware.ext4.bin as default
firmware, and the uboot bootcmd will run wrtboot_ext4rfs for "rootfstype=ext4"
bootargs.

Signed-off-by: Yutang Jiang <yutang.jiang@nxp.com>

1 files changed, 100 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-4.4/1095-mtd-spi-nor-simplify-write-loop.patch b/target/linux/layerscape/patches-4.4/1095-mtd-spi-nor-simplify-write-loop.patch
new file mode 100644
index 0000000..8eb957d
--- /dev/null
+++ b/target/linux/layerscape/patches-4.4/1095-mtd-spi-nor-simplify-write-loop.patch
@@ -0,0 +1,100 @@
+From 93b40e12f7e580a41c4aee5597579cc539fd8544 Mon Sep 17 00:00:00 2001
+From: Michal Suchanek <hramrach@gmail.com>
+Date: Wed, 2 Dec 2015 10:38:20 +0000
+Subject: [PATCH 095/113] mtd: spi-nor: simplify write loop
+
+The spi-nor write loop assumes that what is passed to the hardware
+driver write() is what gets written.
+
+When write() writes less than page size at once data is dropped on the
+floor. Check the amount of data writen and exit if it does not match
+requested amount.
+
+Signed-off-by: Michal Suchanek <hramrach@gmail.com>
+Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@freescale.com>
+---
+ drivers/mtd/spi-nor/spi-nor.c |   58 ++++++++++++++++++-----------------------
+ 1 file changed, 25 insertions(+), 33 deletions(-)
+
+--- a/drivers/mtd/spi-nor/spi-nor.c
++++ b/drivers/mtd/spi-nor/spi-nor.c
+@@ -1017,8 +1017,8 @@ static int spi_nor_write(struct mtd_info
+ 	size_t *retlen, const u_char *buf)
+ {
+ 	struct spi_nor *nor = mtd_to_spi_nor(mtd);
+-	u32 page_offset, page_size, i;
+-	int ret;
++	size_t page_offset, page_remain, i;
++	ssize_t ret;
+ 
+ 	dev_dbg(nor->dev, "to 0x%08x, len %zd\n", (u32)to, len);
+ 
+@@ -1026,45 +1026,37 @@ static int spi_nor_write(struct mtd_info
+ 	if (ret)
+ 		return ret;
+ 
+-	write_enable(nor);
++	for (i = 0; i < len; ) {
++		ssize_t written;
+ 
+-	page_offset = to & (nor->page_size - 1);
+-
+-	/* do all the bytes fit onto one page? */
+-	if (page_offset + len <= nor->page_size) {
+-		ret = nor->write(nor, to, len, buf);
+-		if (ret < 0)
+-			goto write_err;
+-		*retlen += ret;
+-	} else {
++		page_offset = to & (nor->page_size - 1);
++		WARN_ONCE(page_offset,
++			  "Writing at offset %zu into a NOR page. Writing partial pages may decrease reliability and increase wear of NOR flash.",
++			  page_offset);
+ 		/* the size of data remaining on the first page */
+-		page_size = nor->page_size - page_offset;
+-		ret = nor->write(nor, to, page_size, buf);
++		page_remain = min_t(size_t,
++				    nor->page_size - page_offset, len - i);
++
++		write_enable(nor);
++		ret = nor->write(nor, to + i, page_remain, buf + i);
+ 		if (ret < 0)
+ 			goto write_err;
+-		*retlen += ret;
++		written = ret;
+ 
+-		/* write everything in nor->page_size chunks */
+-		for (i = ret; i < len; ) {
+-			page_size = len - i;
+-			if (page_size > nor->page_size)
+-				page_size = nor->page_size;
+-
+-			ret = spi_nor_wait_till_ready(nor);
+-			if (ret)
+-				goto write_err;
+-
+-			write_enable(nor);
+-
+-			ret = nor->write(nor, to + i, page_size, buf + i);
+-			if (ret < 0)
+-				goto write_err;
+-			*retlen += ret;
+-			i += ret;
++		ret = spi_nor_wait_till_ready(nor);
++		if (ret)
++			goto write_err;
++		*retlen += written;
++		i += written;
++		if (written != page_remain) {
++			dev_err(nor->dev,
++				"While writing %zu bytes written %zd bytes\n",
++				page_remain, written);
++			ret = -EIO;
++			goto write_err;
+ 		}
+ 	}
+ 
+-	ret = spi_nor_wait_till_ready(nor);
+ write_err:
+ 	spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_WRITE);
+ 	return ret;