On 03/06/2016 11:57 PM, Yuan Yao wrote: > From: Yuan Yao <yao.y...@nxp.com> > > Signed-off-by: Yuan Yao <yao.y...@nxp.com> > --- > board/freescale/ls2080aqds/README | 35 +++++++++++++++++++++++++++++++++++ > 1 file changed, 35 insertions(+) > > diff --git a/board/freescale/ls2080aqds/README > b/board/freescale/ls2080aqds/README > index 6ddad92..21e8c7b 100644 > --- a/board/freescale/ls2080aqds/README > +++ b/board/freescale/ls2080aqds/README > @@ -227,3 +227,38 @@ DPMAC14 -> PHY4-P1 > DPMAC15 -> PHY4-P2 > DPMAC16 -> PHY4-P3 > > + > +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. Below is the setting for PBI commands for QDS which boot > +on QSPI flash device. > + > +1) CCSR 4-byte write to 0x00e00404, data=0x00000000 > +2) CCSR 4-byte write to 0x00e00400, data=0x20010000 > +The above two commands set bootloc register to 0x00000000_20010000 where > +the u-boot code will be running 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, > +ls2080aqds_qspi_defconfig. The image needed is u-boot-dtb.bin. > +The u-boot image should be written to 0x10000. > + > +=> 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.
Yuan, This procedure seems missing one step. How do users get a working u-boot supporting QSPI? You patch (03/11) says QSPI and IFC share pins. So users must build another U-Boot image such as SD boot. Using that as a bridge to boot into a U-Boot version with QSPI support. Am I right? York _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
