-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 03/14/2014 02:50 PM, Hans de Goede wrote: > Hi, > > On 03/14/2014 03:17 PM, Tom Rini wrote: >> On Fri, Mar 14, 2014 at 10:33:50AM +0000, Ian Campbell wrote: >> >>> Based linux-sunxi#sunxi commit d854c4de2f57 "arm: Handle .gnu.hash section >>> in >>> ldscripts" vs v2014.01. >> [snip] >>> +/* Flat Device Tree (FDT/DT) support */ >>> +#define CONFIG_OF_LIBFDT >>> +#define CONFIG_SYS_BOOTMAPSZ (16 << 20) >> >> This seems pretty small. This is to keep things from being relocated >> into highmem right? > > Hmm, this reminds me that we currently need to do a "env set fdt_high > ffffffff" > in our boot scripts to get ftd to work at all. Would be nice to fix this for > upstream. I'm afraid I'm clueless as to why we (sunxi) need it, but we do.
You want to be setting bootm_low (even for bootz, it's about the underlying boot mechanics that bootz and bootelf and ... hook into) to the amount of lowmem the kernel will have. We do this because we do want to make sure that the device tree isn't overwritten by the kernel BSS or similar. Everyone with more DDR than kernel lowmem needs to be doing something along these lines. - -- Tom -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJTI1J0AAoJENk4IS6UOR1WUocP/Aojl084qj0+sibvo6r7xb0T 23QaTqoGo+0i48mssFhiCo3KY1RMTiokQ0VgE0r29GQSipc5y75nIj24p0SpFD9N H2e2hWoTTQ106+MFx4upK61KLvmDA7LUJIHkVYWmgyOP7qL1wdwB5/5hqHuLkSlF Osz37r2JSbrWgYG+hs8Yby5D/fVizOTpf8f8F5GHrDA+3qlsOOHxUogfPGQeTPpk 9EhrLPSWWIN5l6qnykiiYz0QHDotJvrKoCVm2DJ4APnsIBS3/QyFNkePjVRRrmIT 1zob5wmprYywOjVNeBZ10HjPM8AHuyO2xBr+H3ZwcjfgI4MYiTJiG3eSJ1lTcveY FGbQa7HFzpnp9vwvvpWtT720D58WYdkjYQRarYHBWpXn+i2xKf4zGggX14jytUXU dFrqSDQ1hIEZd6uWj/jQMqHuZWDvnJ46ySqlE37UCZwcO1dQ/6WkNrve+XK1+HGQ EQlTlfRD64a+U2Plh2qoU/xadb+cWNV3fOppUgiwjdvx/+H/8TXsj6h0euaUe7JG ej+xqeH1a5HoVg5g30Ihn/KHNHwefG6ap3/vsdGH6hq5euodNxIzfBNZAEJ+dY58 tUkfuB3G5OeKV6JvbfD2vOJOl7AHRgqabXNHcNDS3AWAFnodcsgRO2E0od1ao7Ii n6pN0HAAzINC4y1kR/tJ =6IRY -----END PGP SIGNATURE----- _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot