On Mon, Jan 04, 2021 at 05:49:03PM +0100, Geert Uytterhoeven wrote: > On Mon, Jan 4, 2021 at 5:45 PM Geert Uytterhoeven <ge...@linux-m68k.org> > wrote: > > Let the LiteX SoC Controller a register a restart handler, which resets > > the LiteX SoC by writing 1 to CSR_CTRL_RESET_ADDR. > > > > Signed-off-by: Geert Uytterhoeven <ge...@linux-m68k.org> > > --- > > Tested with linux-on-litex-vexriscv. > > > > This patch is based on upstream, i.e. not on top of Gabriel Somlo's > > "[PATCH v5 0/4] drivers/soc/litex: support 32-bit subregisters, 64-bit > > CPUs" > > (https://lore.kernel.org/lkml/20201227161320.2194830-1-gso...@gmail.com/) > > Bummer, and that's why the RESET_REG_* definitions are no longer > next to the SCRATCH_REG_* definitions :-(
If it helps I have accepted Gabriel's patches and put them onto for-next. https://github.com/openrisc/linux/commits/for-next I am happy to take and test a patch based on that. Or I can do the adjustments to base the patch on that myself. Let me know. -Stafford > Well, I assume that will be fixed by evolution ;-) > > > v2: > > - Rebase on top of v5.11-rc1, > > - Change reset handler priority to recommended default value of 128 > > (was 192). > > > > (v1 was not sent to a mailing list) > > --- > > drivers/soc/litex/litex_soc_ctrl.c | 33 +++++++++++++++++++++++++++--- > > 1 file changed, 30 insertions(+), 3 deletions(-) > > > > diff --git a/drivers/soc/litex/litex_soc_ctrl.c > > b/drivers/soc/litex/litex_soc_ctrl.c > > index 1217cafdfd4d1d2b..d729ad50d4ffca5e 100644 > > --- a/drivers/soc/litex/litex_soc_ctrl.c > > +++ b/drivers/soc/litex/litex_soc_ctrl.c > > @@ -15,6 +15,11 @@ > > #include <linux/module.h> > > #include <linux/errno.h> > > #include <linux/io.h> > > +#include <linux/reboot.h> > > + > > +/* reset register located at the base address */ > > +#define RESET_REG_OFF 0x00 > > +#define RESET_REG_VALUE 0x00000001 > > > > /* > > * LiteX SoC Generator, depending on the configuration, can split a single > > Gr{oetje,eeting}s, > > Geert > > -- > Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- > ge...@linux-m68k.org > > In personal conversations with technical people, I call myself a hacker. But > when I'm talking to journalists I just say "programmer" or something like > that. > -- Linus Torvalds
