From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heiko Stuebner Date: Thu, 21 Sep 2017 11:09:49 +0200 Subject: [U-Boot] [PATCH v3 0/6] rockchip: back-to-bootrom: replace assembly-implementation with C-code In-Reply-To: <1505981969-49480-1-git-send-email-philipp.tomsich@theobroma-systems.com> References: <1505981969-49480-1-git-send-email-philipp.tomsich@theobroma-systems.com> Message-ID: <2510496.Zb8RDqHzGq@phil> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Am Donnerstag, 21. September 2017, 10:19:23 CEST schrieb Philipp Tomsich: > > Recent discussions confirmed (what the code always assumed): the > Rockchip BROM always enters U-Boot with the stack-pointer valid > (i.e. the U-Boot startup code is running off the BROM stack). > > We can thus replace the back-to-bootrom code (i.e. both the > save_boot_params and back_to_bootrom implementations) using C-code > based on setjmp/longjmp. The new implementation is already structured > to allow an easy drop-in of Andy's changes to enter download-mode when > returning to the BROM. > > This turned out to require a some tweaking to system.h (making sure > that the prototype for save_boot_params_ret is visible for A64)and > start.S (so binutils knows that this is a possible function entry and > it can correctly insert A32-to-Thumb transitions) and taking the axe > to setjmp.h (which created quite a few issues with it not expecting > A32/T32/Thumb call-sites and some fragility from GCC being smart about > the clobber-list of the inline assembly... which led to r9 not being > saved or restored). This is missing information on dependant series. Using the u-boot-rockchip repository which is at 782088de7be7 ("rockchip: imply ADC and SARADC_ROCKCHIP on supported SoCs") patches 1-3 apply, but patch 4 fails to apply as I seem to be missing some dependencies. And the u-boot mailinglist seems to be configured very strangely, as it seems to rip apart patch-series only sending me some parts. So far I can at least say, that the u-boot-rockchip repo at the above commit still boots. Could you please point me to mbox versions of needed base patches? Thanks Heiko