[PULL 17/34] hw/riscv/virt.c: create '/soc/pci@...' fdt node earlier

[Alistair Francis]

From: Daniel Henrique Barboza <dbarboza@ventanamicro.com>

Hotplugged FDT nodes will attempt to write this node that, at this
moment, is being created only in create_fdt_pcie() during
finalize_fdt().

Create it earlier.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20240217192607.32565-4-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
 hw/riscv/virt.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index fd35c74781..b540f4d3da 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -826,7 +826,6 @@ static void create_fdt_pcie(RISCVVirtState *s, const 
MemMapEntry *memmap,
 
     name = g_strdup_printf("/soc/pci@%lx",
         (long) memmap[VIRT_PCIE_ECAM].base);
-    qemu_fdt_add_subnode(ms->fdt, name);
     qemu_fdt_setprop_cell(ms->fdt, name, "#address-cells",
         FDT_PCI_ADDR_CELLS);
     qemu_fdt_setprop_cell(ms->fdt, name, "#interrupt-cells",
@@ -996,6 +995,7 @@ static void create_fdt(RISCVVirtState *s, const MemMapEntry 
*memmap)
 {
     MachineState *ms = MACHINE(s);
     uint8_t rng_seed[32];
+    g_autofree char *name = NULL;
 
     ms->fdt = create_device_tree(&s->fdt_size);
     if (!ms->fdt) {
@@ -1014,6 +1014,13 @@ static void create_fdt(RISCVVirtState *s, const 
MemMapEntry *memmap)
     qemu_fdt_setprop_cell(ms->fdt, "/soc", "#size-cells", 0x2);
     qemu_fdt_setprop_cell(ms->fdt, "/soc", "#address-cells", 0x2);
 
+    /*
+     * The "/soc/pci@..." node is needed for PCIE hotplugs
+     * that might happen before finalize_fdt().
+     */
+    name = g_strdup_printf("/soc/pci@%lx", (long) memmap[VIRT_PCIE_ECAM].base);
+    qemu_fdt_add_subnode(ms->fdt, name);
+
     qemu_fdt_add_subnode(ms->fdt, "/chosen");
 
     /* Pass seed to RNG */
-- 
2.44.0