hw/riscv/boot.c: consolidate all kernel init in riscv_load_kernel()

The microchip_icicle_kit, sifive_u, spike and virt boards are now doing
the same steps when '-kernel' is used:

- execute load_kernel()
- load init_rd()
- write kernel_cmdline

Let's fold everything inside riscv_load_kernel() to avoid code
repetition. To not change the behavior of boards that aren't calling
riscv_load_init(), add an 'load_initrd' flag to riscv_load_kernel() and
allow these boards to opt out from initrd loading.

Cc: Palmer Dabbelt <palmer@dabbelt.com>
Reviewed-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230206140022.2748401-3-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c
index df6b4a1..4954bb9 100644
--- a/hw/riscv/boot.c
+++ b/hw/riscv/boot.c
@@ -176,10 +176,12 @@ target_ulong riscv_load_firmware(const char *firmware_filename,
 target_ulong riscv_load_kernel(MachineState *machine,
                                RISCVHartArrayState *harts,
                                target_ulong kernel_start_addr,
+                               bool load_initrd,
                                symbol_fn_t sym_cb)
 {
     const char *kernel_filename = machine->kernel_filename;
     uint64_t kernel_load_base, kernel_entry;
+    void *fdt = machine->fdt;
 
     g_assert(kernel_filename != NULL);
 
@@ -220,6 +222,15 @@ out:
         kernel_entry = extract64(kernel_entry, 0, 32);
     }
 
+    if (load_initrd && machine->initrd_filename) {
+        riscv_load_initrd(machine, kernel_entry);
+    }
+
+    if (fdt && machine->kernel_cmdline && *machine->kernel_cmdline) {
+        qemu_fdt_setprop_string(fdt, "/chosen", "bootargs",
+                                machine->kernel_cmdline);
+    }
+
     return kernel_entry;
 }