diff options
Diffstat (limited to 'bios')
| -rw-r--r-- | bios/Makefile | 25 | ||||
| -rw-r--r-- | bios/config.ld | 9 | ||||
| -rw-r--r-- | bios/hello.s | 23 |
3 files changed, 0 insertions, 57 deletions
diff --git a/bios/Makefile b/bios/Makefile deleted file mode 100644 index 60e3cc4..0000000 --- a/bios/Makefile +++ /dev/null @@ -1,25 +0,0 @@ -NAME = hello - -CROSS_AS ?= riscv64-suse-linux-as -CROSS_LD ?= riscv64-suse-linux-ld -CROSS_DUMP ?= riscv64-suse-linux-objdump -ASFLAGS = -march=rv64g -mabi=lp64 - -EMU ?= qemu-system-riscv64 - -## -# Targets - -.PHONY: run -run: clean build - $(CROSS_DUMP) -D $(NAME) - $(EMU) -machine virt -bios hello - -.PHONY: build -build: - $(CROSS_AS) $(ASFLAGS) -o $(NAME).o -c $(NAME).s - $(CROSS_LD) -T config.ld $(NAME).o -o $(NAME) - -.PHONY: clean -clean: - @rm -f $(NAME).o $(NAME) diff --git a/bios/config.ld b/bios/config.ld deleted file mode 100644 index 085caa3..0000000 --- a/bios/config.ld +++ /dev/null @@ -1,9 +0,0 @@ -MEMORY { - dram_space (rwx) : ORIGIN = 0x80000000, LENGTH = 128 -} - -SECTIONS { - .text : { - hello.o(.text.bios) - } > dram_space -} diff --git a/bios/hello.s b/bios/hello.s deleted file mode 100644 index f3aa20a..0000000 --- a/bios/hello.s +++ /dev/null @@ -1,23 +0,0 @@ -# From: https://github.com/qemu/qemu/blob/23fa74974d8c96bc95cbecc0d4e2d90f984939f6/hw/riscv/virt.c#L82. -.set QEMU_UART0_ADDRESS, 0x10000000 - -.global _start -.section .text.bios - -_start: li a0, 0x68 - li a1, QEMU_UART0_ADDRESS - sb a0, (a1) # 'h' - - li a0, 0x65 - sb a0, (a1) # 'e' - - li a0, 0x6C - sb a0, (a1) # 'l' - - li a0, 0x6C - sb a0, (a1) # 'l' - - li a0, 0x6F - sb a0, (a1) # 'o' - -loop: j loop |