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charset="utf-8" The SiFive test device found on virt machine can be used by generic syscon reboot and poweroff drivers available in Linux kernel. This patch updates FDT generation in virt machine so that Linux kernel can probe and use generic syscon drivers. Signed-off-by: Anup Patel --- hw/riscv/virt.c | 28 ++++++++++++++++++++++++---- 1 file changed, 24 insertions(+), 4 deletions(-) diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index cc8f311e6b..fdfa359713 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -182,11 +182,11 @@ static void create_fdt(RISCVVirtState *s, const struc= t MemmapEntry *memmap, uint64_t mem_size, const char *cmdline) { void *fdt; - int cpu; + int cpu, i; uint32_t *cells; char *nodename; - uint32_t plic_phandle, phandle =3D 1; - int i; + const char test_compat[] =3D "sifive,test0\0syscon"; + uint32_t plic_phandle, test_phandle, phandle =3D 1; hwaddr flashsize =3D virt_memmap[VIRT_FLASH].size / 2; hwaddr flashbase =3D virt_memmap[VIRT_FLASH].base; =20 @@ -356,13 +356,33 @@ static void create_fdt(RISCVVirtState *s, const struc= t MemmapEntry *memmap, create_pcie_irq_map(fdt, nodename, plic_phandle); g_free(nodename); =20 + test_phandle =3D phandle++; nodename =3D g_strdup_printf("/test@%lx", (long)memmap[VIRT_TEST].base); qemu_fdt_add_subnode(fdt, nodename); - qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,test0"); + qemu_fdt_setprop(fdt, nodename, "compatible", + test_compat, sizeof(test_compat)); qemu_fdt_setprop_cells(fdt, nodename, "reg", 0x0, memmap[VIRT_TEST].base, 0x0, memmap[VIRT_TEST].size); + qemu_fdt_setprop_cell(fdt, nodename, "phandle", test_phandle); + test_phandle =3D qemu_fdt_get_phandle(fdt, nodename); + g_free(nodename); + + nodename =3D g_strdup_printf("/reboot"); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_string(fdt, nodename, "compatible", "syscon-reboot"); + qemu_fdt_setprop_cell(fdt, nodename, "regmap", test_phandle); + qemu_fdt_setprop_cell(fdt, nodename, "offset", 0x0); + qemu_fdt_setprop_cell(fdt, nodename, "value", FINISHER_RESET); + g_free(nodename); + + nodename =3D g_strdup_printf("/poweroff"); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_string(fdt, nodename, "compatible", "syscon-poweroff"= ); + qemu_fdt_setprop_cell(fdt, nodename, "regmap", test_phandle); + qemu_fdt_setprop_cell(fdt, nodename, "offset", 0x0); + qemu_fdt_setprop_cell(fdt, nodename, "value", FINISHER_PASS); g_free(nodename); =20 nodename =3D g_strdup_printf("/uart@%lx", --=20 2.17.1