Hi Bin,
On Tue, 2018-11-13 at 00:21 -0800, Bin Meng wrote:
To enumerate devices on the /soc/ node, create a "simple-bus" driver to match "riscv-virtio-soc".
Signed-off-by: Bin Meng bmeng.cn@gmail.com
arch/riscv/cpu/qemu/cpu.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
Reviewed-by: Lukas Auer lukas.auer@aisec.fraunhofer.de
Would it makes sense to move this to cpu/ to make this driver available to all RISC-V CPUs? I think most CPUs will need this driver to make devices under the soc/ node available before relocation.
diff --git a/arch/riscv/cpu/qemu/cpu.c b/arch/riscv/cpu/qemu/cpu.c index 6c7a327..221f3a8 100644 --- a/arch/riscv/cpu/qemu/cpu.c +++ b/arch/riscv/cpu/qemu/cpu.c @@ -4,6 +4,7 @@ */
#include <common.h> +#include <dm.h>
/*
- cleanup_before_linux() is called just before we call linux
@@ -19,3 +20,15 @@ int cleanup_before_linux(void)
return 0; }
+/* To enumerate devices on the /soc/ node, create a "simple-bus" driver */ +static const struct udevice_id riscv_virtio_soc_ids[] = {
- { .compatible = "riscv-virtio-soc" },
- { }
+};
+U_BOOT_DRIVER(riscv_virtio_soc) = {
- .name = "riscv_virtio_soc",
- .id = UCLASS_SIMPLE_BUS,
- .of_match = riscv_virtio_soc_ids,
+};
I think the DM_FLAG_PRE_RELOC flag should be set, since it is set for the syscon driver for the clint0.
Thanks, Lukas