On Sat, Jan 15, 2022 at 12:20 AM Anup Patel <apa...@ventanamicro.com> wrote: > > Quite a few RISC-V emulators and ISS (including Spike) have host > transfer interface (HTIF) based console. This patch adds HTIF > based console driver for RISC-V platforms which depends totally > on DT node for HTIF register base address. > > Signed-off-by: Anup Patel <apa...@ventanamicro.com> > Reviewed-by: Philipp Tomsich <philipp.toms...@vrull.eu> > --- > drivers/serial/Kconfig | 8 ++ > drivers/serial/Makefile | 1 + > drivers/serial/serial_htif.c | 178 +++++++++++++++++++++++++++++++++++ > 3 files changed, 187 insertions(+) > create mode 100644 drivers/serial/serial_htif.c > > diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig > index 6c8fdda9a0..345d1881f5 100644 > --- a/drivers/serial/Kconfig > +++ b/drivers/serial/Kconfig > @@ -866,6 +866,14 @@ config PXA_SERIAL > If you have a machine based on a Marvell XScale PXA2xx CPU you > can enable its onboard serial ports by enabling this option. > > +config HTIF_CONSOLE > + bool "RISC-V HTIF console support" > + depends on DM_SERIAL && 64BIT
Does this driver not work on 32-bit? > + help > + Select this to enable host transfer interface (HTIF) based serial > + console. The HTIF device is quite common in RISC-V emulators and > + RISC-V ISS so this driver allows using U-Boot on such platforms. > + > config SIFIVE_SERIAL > bool "SiFive UART support" > depends on DM_SERIAL Regards, Bin
