From 4f69fb67ee229c7b59ced5db64142b527d74ce7b Mon Sep 17 00:00:00 2001 From: Miquel Sabaté Solà Date: Tue, 3 Sep 2024 11:53:15 +0200 Subject: Provide an improved example on early boot stage MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This also implied a renaming arch/riscv/bios -> arch/riscv/machine. Signed-off-by: Miquel Sabaté Solà --- arch/riscv/bios/Makefile | 25 ------------------------- arch/riscv/bios/config.ld | 9 --------- arch/riscv/bios/hello.s | 23 ----------------------- 3 files changed, 57 deletions(-) delete mode 100644 arch/riscv/bios/Makefile delete mode 100644 arch/riscv/bios/config.ld delete mode 100644 arch/riscv/bios/hello.s (limited to 'arch/riscv/bios') diff --git a/arch/riscv/bios/Makefile b/arch/riscv/bios/Makefile deleted file mode 100644 index 60e3cc4..0000000 --- a/arch/riscv/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/arch/riscv/bios/config.ld b/arch/riscv/bios/config.ld deleted file mode 100644 index 085caa3..0000000 --- a/arch/riscv/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/arch/riscv/bios/hello.s b/arch/riscv/bios/hello.s deleted file mode 100644 index f3aa20a..0000000 --- a/arch/riscv/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 -- cgit v1.2.3