aboutsummaryrefslogtreecommitdiff
path: root/hw/ppc/pnv.c
diff options
context:
space:
mode:
Diffstat (limited to 'hw/ppc/pnv.c')
-rw-r--r--hw/ppc/pnv.c226
1 files changed, 226 insertions, 0 deletions
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
new file mode 100644
index 0000000000..8d9850989b
--- /dev/null
+++ b/hw/ppc/pnv.c
@@ -0,0 +1,226 @@
+/*
+ * QEMU PowerPC PowerNV machine model
+ *
+ * Copyright (c) 2016, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "sysemu/sysemu.h"
+#include "sysemu/numa.h"
+#include "hw/hw.h"
+#include "target-ppc/cpu.h"
+#include "qemu/log.h"
+#include "hw/ppc/fdt.h"
+#include "hw/ppc/ppc.h"
+#include "hw/ppc/pnv.h"
+#include "hw/loader.h"
+#include "exec/address-spaces.h"
+#include "qemu/cutils.h"
+
+#include <libfdt.h>
+
+#define FDT_MAX_SIZE 0x00100000
+
+#define FW_FILE_NAME "skiboot.lid"
+#define FW_LOAD_ADDR 0x0
+#define FW_MAX_SIZE 0x00400000
+
+#define KERNEL_LOAD_ADDR 0x20000000
+#define INITRD_LOAD_ADDR 0x40000000
+
+/*
+ * On Power Systems E880 (POWER8), the max cpus (threads) should be :
+ * 4 * 4 sockets * 12 cores * 8 threads = 1536
+ * Let's make it 2^11
+ */
+#define MAX_CPUS 2048
+
+/*
+ * Memory nodes are created by hostboot, one for each range of memory
+ * that has a different "affinity". In practice, it means one range
+ * per chip.
+ */
+static void powernv_populate_memory_node(void *fdt, int chip_id, hwaddr start,
+ hwaddr size)
+{
+ char *mem_name;
+ uint64_t mem_reg_property[2];
+ int off;
+
+ mem_reg_property[0] = cpu_to_be64(start);
+ mem_reg_property[1] = cpu_to_be64(size);
+
+ mem_name = g_strdup_printf("memory@%"HWADDR_PRIx, start);
+ off = fdt_add_subnode(fdt, 0, mem_name);
+ g_free(mem_name);
+
+ _FDT((fdt_setprop_string(fdt, off, "device_type", "memory")));
+ _FDT((fdt_setprop(fdt, off, "reg", mem_reg_property,
+ sizeof(mem_reg_property))));
+ _FDT((fdt_setprop_cell(fdt, off, "ibm,chip-id", chip_id)));
+}
+
+static void *powernv_create_fdt(MachineState *machine)
+{
+ const char plat_compat[] = "qemu,powernv\0ibm,powernv";
+ PnvMachineState *pnv = POWERNV_MACHINE(machine);
+ void *fdt;
+ char *buf;
+ int off;
+
+ fdt = g_malloc0(FDT_MAX_SIZE);
+ _FDT((fdt_create_empty_tree(fdt, FDT_MAX_SIZE)));
+
+ /* Root node */
+ _FDT((fdt_setprop_cell(fdt, 0, "#address-cells", 0x2)));
+ _FDT((fdt_setprop_cell(fdt, 0, "#size-cells", 0x2)));
+ _FDT((fdt_setprop_string(fdt, 0, "model",
+ "IBM PowerNV (emulated by qemu)")));
+ _FDT((fdt_setprop(fdt, 0, "compatible", plat_compat,
+ sizeof(plat_compat))));
+
+ buf = qemu_uuid_unparse_strdup(&qemu_uuid);
+ _FDT((fdt_setprop_string(fdt, 0, "vm,uuid", buf)));
+ if (qemu_uuid_set) {
+ _FDT((fdt_property_string(fdt, "system-id", buf)));
+ }
+ g_free(buf);
+
+ off = fdt_add_subnode(fdt, 0, "chosen");
+ if (machine->kernel_cmdline) {
+ _FDT((fdt_setprop_string(fdt, off, "bootargs",
+ machine->kernel_cmdline)));
+ }
+
+ if (pnv->initrd_size) {
+ uint32_t start_prop = cpu_to_be32(pnv->initrd_base);
+ uint32_t end_prop = cpu_to_be32(pnv->initrd_base + pnv->initrd_size);
+
+ _FDT((fdt_setprop(fdt, off, "linux,initrd-start",
+ &start_prop, sizeof(start_prop))));
+ _FDT((fdt_setprop(fdt, off, "linux,initrd-end",
+ &end_prop, sizeof(end_prop))));
+ }
+
+ /* TODO: put all the memory in one node on chip 0 until we find a
+ * way to specify different ranges for each chip
+ */
+ powernv_populate_memory_node(fdt, 0, 0, machine->ram_size);
+
+ return fdt;
+}
+
+static void ppc_powernv_reset(void)
+{
+ MachineState *machine = MACHINE(qdev_get_machine());
+ void *fdt;
+
+ qemu_devices_reset();
+
+ fdt = powernv_create_fdt(machine);
+
+ /* Pack resulting tree */
+ _FDT((fdt_pack(fdt)));
+
+ cpu_physical_memory_write(PNV_FDT_ADDR, fdt, fdt_totalsize(fdt));
+}
+
+static void ppc_powernv_init(MachineState *machine)
+{
+ PnvMachineState *pnv = POWERNV_MACHINE(machine);
+ MemoryRegion *ram;
+ char *fw_filename;
+ long fw_size;
+
+ /* allocate RAM */
+ if (machine->ram_size < (1 * G_BYTE)) {
+ error_report("Warning: skiboot may not work with < 1GB of RAM");
+ }
+
+ ram = g_new(MemoryRegion, 1);
+ memory_region_allocate_system_memory(ram, NULL, "ppc_powernv.ram",
+ machine->ram_size);
+ memory_region_add_subregion(get_system_memory(), 0, ram);
+
+ /* load skiboot firmware */
+ if (bios_name == NULL) {
+ bios_name = FW_FILE_NAME;
+ }
+
+ fw_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
+
+ fw_size = load_image_targphys(fw_filename, FW_LOAD_ADDR, FW_MAX_SIZE);
+ if (fw_size < 0) {
+ hw_error("qemu: could not load OPAL '%s'\n", fw_filename);
+ exit(1);
+ }
+ g_free(fw_filename);
+
+ /* load kernel */
+ if (machine->kernel_filename) {
+ long kernel_size;
+
+ kernel_size = load_image_targphys(machine->kernel_filename,
+ KERNEL_LOAD_ADDR, 0x2000000);
+ if (kernel_size < 0) {
+ hw_error("qemu: could not load kernel'%s'\n",
+ machine->kernel_filename);
+ exit(1);
+ }
+ }
+
+ /* load initrd */
+ if (machine->initrd_filename) {
+ pnv->initrd_base = INITRD_LOAD_ADDR;
+ pnv->initrd_size = load_image_targphys(machine->initrd_filename,
+ pnv->initrd_base, 0x10000000); /* 128MB max */
+ if (pnv->initrd_size < 0) {
+ error_report("qemu: could not load initial ram disk '%s'",
+ machine->initrd_filename);
+ exit(1);
+ }
+ }
+}
+
+static void powernv_machine_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+
+ mc->desc = "IBM PowerNV (Non-Virtualized)";
+ mc->init = ppc_powernv_init;
+ mc->reset = ppc_powernv_reset;
+ mc->max_cpus = MAX_CPUS;
+ mc->block_default_type = IF_IDE; /* Pnv provides a AHCI device for
+ * storage */
+ mc->no_parallel = 1;
+ mc->default_boot_order = NULL;
+ mc->default_ram_size = 1 * G_BYTE;
+}
+
+static const TypeInfo powernv_machine_info = {
+ .name = TYPE_POWERNV_MACHINE,
+ .parent = TYPE_MACHINE,
+ .instance_size = sizeof(PnvMachineState),
+ .class_init = powernv_machine_class_init,
+};
+
+static void powernv_machine_register_types(void)
+{
+ type_register_static(&powernv_machine_info);
+}
+
+type_init(powernv_machine_register_types)
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-22 11:54:21 +0000