From: Yuan Yao <yao.y...@nxp.com>
Signed-off-by: Yuan Yao <yao.y...@nxp.com>
---
Changed in v2:
Move the readme for QSPI deploy out of only for ls2080aqds.
---
.../arm/cpu/armv8/fsl-layerscape/doc/README.deploy | 44 ++++++++++++++++++++++
1 file changed, 44 insertions(+)
create mode 100644 arch/arm/cpu/armv8/fsl-layerscape/doc/README.deploy
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/doc/README.deploy
b/arch/arm/cpu/armv8/fsl-layerscape/doc/README.deploy
new file mode 100644
index 0000000..25813b3
--- /dev/null
+++ b/arch/arm/cpu/armv8/fsl-layerscape/doc/README.deploy
@@ -0,0 +1,44 @@
+Boot source support Overview
+-------------------
+ 1. LS1043A
+ LS1043AQDS:QSPI, SD, NOR, NAND
+ LS1043ARDB:SD, NOR, NAND
+ 2. LS2080A
+ LS2080AQDS:QSPI, SD, NOR, NAND
+ LS2080ARDB:NOR, NAND
+ 3. LS1012A
+ LS1012AQDS:QSPI
+ LS1012ARDB:QSPI
+ 4. LS1046A
+ LS1046AQDS:QSPI, SD, NOR, NAND
+ LS1046ARDB:QSPI, SD
+
+Booting from QSPI
+-------------------
+Booting from QSPI requires two images, RCW and u-boot-dtb.bin.
+The difference between QSPI boot RCW image and NOR boot image is the PBI
+command sequence for setting the boot location pointer. It's should point
+to the address for u-boot in QSPI flash.
+
+RCW image should be written to the beginning of QSPI flash device.
+Example of using u-boot command
+
+=> sf probe 0:0
+SF: Detected S25FL256S_64K with page size 256 Bytes, erase size 64 KiB, total
32 MiB
+=> sf erase 0 +<size of rcw image>
+SF: 65536 bytes @ 0x0 Erased: OK
+=> sf write <rcw image in memory> 0 <size of rcw image>
+SF: 164 bytes @ 0x0 Written: OK
+
+To get the QSPI image, build u-boot with QSPI config, for example,
+<board_name>_qspi_defconfig. The image needed is u-boot-dtb.bin.
+The u-boot image should be written to 0x10000(but 0x1000 for LS1043A, LS2080A).
+
+=> sf probe 0:0
+SF: Detected S25FL256S_64K with page size 256 Bytes, erase size 64 KiB, total
32 MiB
+=> sf erase 10000 +<size of u-boot image>
+SF: 589824 bytes @ 0x10000 Erased: OK
+=> sf write <u-boot image in memory> 10000 <size of u-boot image>
+SF: 580966 bytes @ 0x10000 Written: OK
+
+With these two images in QSPI flash device, the board can boot from QSPI.
--
2.1.0.27.g96db324
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