On 18 September 2017 at 12:18, Philipp Tomsich <philipp.toms...@theobroma-systems.com> wrote: > The RK3188 implementation previously passed the address of the stack > frame created during save_boot_params via pmu->os_reg[2]. This was not > strictly necessary, as the save_boot_params() function was called > twice (first: for TPL, saving the context for the BROM; next: for SPL, > saving the context for the TPL) and a back-to-bootrom from the SPL > would thus return to TPL. > > To simplify things, we now assume that the state of the TPL is not > corrupted during SPL (the binaries are non-overlapping) and that the > SPL can safely return to TPL using the back-to-bootrom mechanism. > Consequently, the TPL should expect the SPL to return control and then > further return to the actual bootrom by performing another > back-to-bootrom transition. > > Signed-off-by: Philipp Tomsich <philipp.toms...@theobroma-systems.com> > --- > > Changes in v2: > - [added in v2] chain back_to_bootrom calls for SPL, first returning > to the TPL (using the same mechanism) and the to the BROM from the > TPL > > arch/arm/mach-rockchip/rk3188-board-spl.c | 10 ---------- > arch/arm/mach-rockchip/rk3188-board-tpl.c | 17 ++++++++++------- > 2 files changed, 10 insertions(+), 17 deletions(-)
Reviewed-by: Simon Glass <s...@chromium.org> _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
