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lib: utils/serial: add semihosting support

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We add RISC-V semihosting based serial console for JTAG based early
debugging.

The RISC-V semihosting specification is available at:
https://github.com/riscv/riscv-semihosting-spec/blob/main/riscv-semihosting-spec.adoc

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Kautuk Consul <kconsul@ventanamicro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Kautuk Consul
2022-09-12 16:22:53 +05:30
committed by Anup Patel
parent 49372f2691
commit 7f09fba86e
6 changed files with 241 additions and 1 deletions
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lib/utils/serial/objects.mk
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@@ -41,3 +41,4 @@ libsbiutils-objs-$(CONFIG_SERIAL_SIFIVE) += serial/sifive-uart.o
libsbiutils-objs-$(CONFIG_SERIAL_LITEX) += serial/litex-uart.o
libsbiutils-objs-$(CONFIG_SERIAL_UART8250) += serial/uart8250.o
libsbiutils-objs-$(CONFIG_SERIAL_XILINX_UARTLITE) += serial/xlnx-uartlite.o
libsbiutils-objs-$(CONFIG_SERIAL_SEMIHOSTING) += serial/semihosting.o