diff options
| author | Miquel Sabaté Solà <mikisabate@gmail.com> | 2024-08-28 22:25:56 +0200 |
|---|---|---|
| committer | Miquel Sabaté Solà <mikisabate@gmail.com> | 2024-12-05 16:02:49 +0100 |
| commit | ab03d3be21f229be8c28dba292d5da237a929a73 (patch) | |
| tree | 8bc53e3031f644532fec255bb392a90cd4ad59fb /arch/riscv/bios/hello.s | |
| parent | 1a36e6211674f1a39c7cc0ddff705357a4add65a (diff) | |
| download | farga-ab03d3be21f229be8c28dba292d5da237a929a73.tar.gz farga-ab03d3be21f229be8c28dba292d5da237a929a73.zip | |
Restructure the whole thing
It will be something more than just messing around with RISC-V stuff.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
Diffstat (limited to 'arch/riscv/bios/hello.s')
| -rw-r--r-- | arch/riscv/bios/hello.s | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/riscv/bios/hello.s b/arch/riscv/bios/hello.s new file mode 100644 index 0000000..f3aa20a --- /dev/null +++ b/arch/riscv/bios/hello.s @@ -0,0 +1,23 @@ +# 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 |