Hi Prabhakar, On Fri, Jun 29, 2018 at 10:55 AM, Prabhakar Kushwaha <prabhakar.kushw...@nxp.com> wrote: > >> -----Original Message----- >> From: York Sun >> Sent: Thursday, June 28, 2018 9:07 PM >> To: Prabhakar Kushwaha <prabhakar.kushw...@nxp.com>; Simon Glass >> <s...@chromium.org> >> Cc: u-boot@lists.denx.de; Poonam Aggrwal <poonam.aggr...@nxp.com>; >> Jagdish Gediya <jagdish.ged...@nxp.com> >> Subject: Re: Support of device-tree for PowerPC platform: Query >> >> On 06/27/2018 11:30 PM, Prabhakar Kushwaha wrote: >> >> <snip> >> >> >> Thanks for the direction. >> >> >> >> We will be following approach "a" with updated flash map. >> >> We will allocate 1MB for uboot in flash. Out which 64K for DTB and >> >> 960KB for u-boot for future increase. >> >> >> >> We will also update location of env and fman ucode for NXP platforms. >> >> >> > >> > >> > Other thought, >> > use CONFIG_OF_SEPARATE but **don't** concatenate dtb with u-boot. >> In >> > this case user has to program u-boot and dtb separately at different >> > location. It will also have minimal impact on PowerPC platforms >> > >> > Just wondering if this approach has any disadvantages in longer run. >> > What if user forget to program dtb and restart system?? >> > >> >> If we cannot combine DT with U-Boot image, we may have to live with two >> separated images. We may have to shift the ENV sectors to make DT right >> above U-Boot for convenience. If U-Boot can boot up and show a message of >> missing DT, it is acceptable to me. >> > > Putting DT in place of Env require lots of modification. > I want to use existing QorIQ platform's memory map. > > Here 1 MB flash memory is reserved for Linux DTB. Just wanted to split into > 2 parts (Linux, uboot) with both size 512KB. > This 1 MB location is far from u-boot, env, fman ucode. >
Since the QorIQ parts have lots of firmware that need to be put in flash, binman is the best choice here and can handle dtb as well. Regards, Bin _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
