From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Date: Tue, 14 Apr 2015 08:35:02 -0600 Subject: [U-Boot] [PATCH v6 00/15] Add PSCI support for Jetson TK1/Tegra124 + CNTFRQ fix In-Reply-To: <1429021814.15516.72.camel@hellion.org.uk> References: <20150414134636.GH16702@bill-the-cat> <552D1EDC.7060307@wwwdotorg.org> <552D2037.5050207@siemens.com> <1429021814.15516.72.camel@hellion.org.uk> Message-ID: <552D2596.3070608@wwwdotorg.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 04/14/2015 08:30 AM, Ian Campbell wrote: > On Tue, 2015-04-14 at 16:12 +0200, Jan Kiszka wrote: >> On 2015-04-14 16:06, Stephen Warren wrote: >>> On 04/14/2015 07:46 AM, Tom Rini wrote: >>>> On Mon, Apr 13, 2015 at 06:48:05AM +0200, Jan Kiszka wrote: >>>> >>>>> Changes in v6: >>>>> - rebased over master >>>>> - included Thierry's SMMU enabling patch >>>>> - moved activation patch at the end so that it can be held back >>>>> >>>>> This version can also be found at >>>>> https://github.com/siemens/u-boot/tree/jetson-tk1-v6. >>>> >>>> So what level of coordination do we need on applying this series so that >>>> kernels (both old and new) can continue to function? And perhaps README >>>> updates or similar? Thanks! >>> >>> Hopefully this series doesn't change anything by default, and simply >>> allows people to turn on support for booting kernels in non-secure mode >>> if they want to? If so, there shouldn't be any co-ordination required. >>> If it changes the default behaviour, co-ordination is probably required, >>> and that'd be a bad thing. >> >> Sorry, forgot to mention: I can't flip the default behaviour to leave >> virtualization support off only for the TK1. That's a generic default. > > Would enabling it in the compile but adding "bootm_boot_mode=sec" to the > default environment (so it isn't used by default) be considered > sufficiently backwards compatible? Yes, if there's already an environment variable that controls the behaviour, that'd be even better.