From: Anup Patel apatel@ventanamicro.com Sent: Saturday, January 15, 2022 12:20 AM To: Rick Jian-Zhi Chen(陳建志) rick@andestech.com; Bin Meng bmeng.cn@gmail.com Cc: Atish Patra atishp@atishpatra.org; Alistair Francis Alistair.Francis@wdc.com; Anup Patel anup@brainfault.org; U-Boot Mailing List u-boot@lists.denx.de; Anup Patel apatel@ventanamicro.com; Philipp Tomsich philipp.tomsich@vrull.eu Subject: [PATCH 1/3] serial: Add RISC-V HTIF console driver

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 apatel@ventanamicro.com Reviewed-by: Philipp Tomsich philipp.tomsich@vrull.eu

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drivers/serial/Kconfig | 8 ++ drivers/serial/Makefile | 1 + drivers/serial/serial_htif.c | 178 +++++++++++++++++++++++++++++++++++ 3 files changed, 187 insertions(+)

Reviewed-by: Rick Chen rick@andestech.com