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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=216.71.153.144; envelope-from=prvs=56447669b=alistair.francis@wdc.com; helo=esa5.hgst.iphmx.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/29 10:25:26 X-ACL-Warn: Detected OS = FreeBSD 9.x or newer [fuzzy] X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alistair23@gmail.com, Anup Patel , Alistair Francis Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" From: Anup Patel Extend sifive_u machine to allow passing custom DTB using "-dtb" command-line parameter. This will help users pass modified DTB or Linux SiFive DTB to sifive_u machine. Signed-off-by: Anup Patel Reviewed-by: Alistair Francis Message-id: 20201022053225.2596110-1-anup.patel@wdc.com Signed-off-by: Alistair Francis --- hw/riscv/sifive_u.c | 28 ++++++++++++++++++++-------- 1 file changed, 20 insertions(+), 8 deletions(-) diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index b2472c6627..2f19a9cda2 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -100,14 +100,25 @@ static void create_fdt(SiFiveUState *s, const struct = MemmapEntry *memmap, int cpu; uint32_t *cells; char *nodename; + const char *dtb_filename; char ethclk_names[] =3D "pclk\0hclk"; uint32_t plic_phandle, prci_phandle, gpio_phandle, phandle =3D 1; uint32_t hfclk_phandle, rtcclk_phandle, phy_phandle; =20 - fdt =3D s->fdt =3D create_device_tree(&s->fdt_size); - if (!fdt) { - error_report("create_device_tree() failed"); - exit(1); + dtb_filename =3D qemu_opt_get(qemu_get_machine_opts(), "dtb"); + if (dtb_filename) { + fdt =3D s->fdt =3D load_device_tree(dtb_filename, &s->fdt_size); + if (!fdt) { + error_report("load_device_tree() failed"); + exit(1); + } + goto update_bootargs; + } else { + fdt =3D s->fdt =3D create_device_tree(&s->fdt_size); + if (!fdt) { + error_report("create_device_tree() failed"); + exit(1); + } } =20 qemu_fdt_setprop_string(fdt, "/", "model", "SiFive HiFive Unleashed A0= 0"); @@ -390,13 +401,14 @@ static void create_fdt(SiFiveUState *s, const struct = MemmapEntry *memmap, =20 qemu_fdt_add_subnode(fdt, "/chosen"); qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename); - if (cmdline) { - qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); - } - qemu_fdt_setprop_string(fdt, "/aliases", "serial0", nodename); =20 g_free(nodename); + +update_bootargs: + if (cmdline) { + qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); + } } =20 static void sifive_u_machine_reset(void *opaque, int n, int level) --=20 2.28.0