On 10/11/2016 11:04 PM, york sun wrote: > On 10/10/2016 11:04 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 f288750..0f7446a 100644 > > --- a/board/freescale/ls2080aqds/README > > +++ b/board/freescale/ls2080aqds/README > > @@ -188,3 +188,38 @@ 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 Yao, > > I think the procedure can be applied to many of our boards with QSPI, right? > It > may be better to move this information out of ls2080aqds. >
Hi York, Yes, but a little difference for "CCSR write" for different boards. But the "CCSR write" should be wrote into uboot code or cw. So, should I remove the notes for "CCSR write" and then move this information for all the boards which support QSPI boot? _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
