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-rw-r--r--hw/spapr.c475
1 files changed, 475 insertions, 0 deletions
diff --git a/hw/spapr.c b/hw/spapr.c
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--- /dev/null
+++ b/hw/spapr.c
@@ -0,0 +1,475 @@
+/*
+ * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator
+ *
+ * Copyright (c) 2004-2007 Fabrice Bellard
+ * Copyright (c) 2007 Jocelyn Mayer
+ * Copyright (c) 2010 David Gibson, IBM Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+#include "sysemu.h"
+#include "hw.h"
+#include "elf.h"
+#include "net.h"
+#include "blockdev.h"
+
+#include "hw/boards.h"
+#include "hw/ppc.h"
+#include "hw/loader.h"
+
+#include "hw/spapr.h"
+#include "hw/spapr_vio.h"
+#include "hw/xics.h"
+
+#include <libfdt.h>
+
+#define KERNEL_LOAD_ADDR 0x00000000
+#define INITRD_LOAD_ADDR 0x02800000
+#define FDT_MAX_SIZE 0x10000
+#define RTAS_MAX_SIZE 0x10000
+#define FW_MAX_SIZE 0x400000
+#define FW_FILE_NAME "slof.bin"
+
+#define MIN_RAM_SLOF 512UL
+
+#define TIMEBASE_FREQ 512000000ULL
+
+#define MAX_CPUS 32
+#define XICS_IRQS 1024
+
+sPAPREnvironment *spapr;
+
+static void *spapr_create_fdt_skel(const char *cpu_model,
+ target_phys_addr_t initrd_base,
+ target_phys_addr_t initrd_size,
+ const char *boot_device,
+ const char *kernel_cmdline,
+ long hash_shift)
+{
+ void *fdt;
+ CPUState *env;
+ uint64_t mem_reg_property[] = { 0, cpu_to_be64(ram_size) };
+ uint32_t start_prop = cpu_to_be32(initrd_base);
+ uint32_t end_prop = cpu_to_be32(initrd_base + initrd_size);
+ uint32_t pft_size_prop[] = {0, cpu_to_be32(hash_shift)};
+ char hypertas_prop[] = "hcall-pft\0hcall-term\0hcall-dabr\0hcall-interrupt"
+ "\0hcall-tce\0hcall-vio\0hcall-splpar";
+ uint32_t interrupt_server_ranges_prop[] = {0, cpu_to_be32(smp_cpus)};
+ int i;
+ char *modelname;
+
+#define _FDT(exp) \
+ do { \
+ int ret = (exp); \
+ if (ret < 0) { \
+ fprintf(stderr, "qemu: error creating device tree: %s: %s\n", \
+ #exp, fdt_strerror(ret)); \
+ exit(1); \
+ } \
+ } while (0)
+
+ fdt = qemu_mallocz(FDT_MAX_SIZE);
+ _FDT((fdt_create(fdt, FDT_MAX_SIZE)));
+
+ _FDT((fdt_finish_reservemap(fdt)));
+
+ /* Root node */
+ _FDT((fdt_begin_node(fdt, "")));
+ _FDT((fdt_property_string(fdt, "device_type", "chrp")));
+ _FDT((fdt_property_string(fdt, "model", "qemu,emulated-pSeries-LPAR")));
+
+ _FDT((fdt_property_cell(fdt, "#address-cells", 0x2)));
+ _FDT((fdt_property_cell(fdt, "#size-cells", 0x2)));
+
+ /* /chosen */
+ _FDT((fdt_begin_node(fdt, "chosen")));
+
+ _FDT((fdt_property_string(fdt, "bootargs", kernel_cmdline)));
+ _FDT((fdt_property(fdt, "linux,initrd-start",
+ &start_prop, sizeof(start_prop))));
+ _FDT((fdt_property(fdt, "linux,initrd-end",
+ &end_prop, sizeof(end_prop))));
+ _FDT((fdt_property_string(fdt, "qemu,boot-device", boot_device)));
+
+ _FDT((fdt_end_node(fdt)));
+
+ /* memory node */
+ _FDT((fdt_begin_node(fdt, "memory@0")));
+
+ _FDT((fdt_property_string(fdt, "device_type", "memory")));
+ _FDT((fdt_property(fdt, "reg",
+ mem_reg_property, sizeof(mem_reg_property))));
+
+ _FDT((fdt_end_node(fdt)));
+
+ /* cpus */
+ _FDT((fdt_begin_node(fdt, "cpus")));
+
+ _FDT((fdt_property_cell(fdt, "#address-cells", 0x1)));
+ _FDT((fdt_property_cell(fdt, "#size-cells", 0x0)));
+
+ modelname = qemu_strdup(cpu_model);
+
+ for (i = 0; i < strlen(modelname); i++) {
+ modelname[i] = toupper(modelname[i]);
+ }
+
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ int index = env->cpu_index;
+ uint32_t gserver_prop[] = {cpu_to_be32(index), 0}; /* HACK! */
+ char *nodename;
+ uint32_t segs[] = {cpu_to_be32(28), cpu_to_be32(40),
+ 0xffffffff, 0xffffffff};
+
+ if (asprintf(&nodename, "%s@%x", modelname, index) < 0) {
+ fprintf(stderr, "Allocation failure\n");
+ exit(1);
+ }
+
+ _FDT((fdt_begin_node(fdt, nodename)));
+
+ free(nodename);
+
+ _FDT((fdt_property_cell(fdt, "reg", index)));
+ _FDT((fdt_property_string(fdt, "device_type", "cpu")));
+
+ _FDT((fdt_property_cell(fdt, "cpu-version", env->spr[SPR_PVR])));
+ _FDT((fdt_property_cell(fdt, "dcache-block-size",
+ env->dcache_line_size)));
+ _FDT((fdt_property_cell(fdt, "icache-block-size",
+ env->icache_line_size)));
+ _FDT((fdt_property_cell(fdt, "timebase-frequency", TIMEBASE_FREQ)));
+ /* Hardcode CPU frequency for now. It's kind of arbitrary on
+ * full emu, for kvm we should copy it from the host */
+ _FDT((fdt_property_cell(fdt, "clock-frequency", 1000000000)));
+ _FDT((fdt_property_cell(fdt, "ibm,slb-size", env->slb_nr)));
+ _FDT((fdt_property(fdt, "ibm,pft-size",
+ pft_size_prop, sizeof(pft_size_prop))));
+ _FDT((fdt_property_string(fdt, "status", "okay")));
+ _FDT((fdt_property(fdt, "64-bit", NULL, 0)));
+ _FDT((fdt_property_cell(fdt, "ibm,ppc-interrupt-server#s", index)));
+ _FDT((fdt_property(fdt, "ibm,ppc-interrupt-gserver#s",
+ gserver_prop, sizeof(gserver_prop))));
+
+ if (env->mmu_model & POWERPC_MMU_1TSEG) {
+ _FDT((fdt_property(fdt, "ibm,processor-segment-sizes",
+ segs, sizeof(segs))));
+ }
+
+ _FDT((fdt_end_node(fdt)));
+ }
+
+ qemu_free(modelname);
+
+ _FDT((fdt_end_node(fdt)));
+
+ /* RTAS */
+ _FDT((fdt_begin_node(fdt, "rtas")));
+
+ _FDT((fdt_property(fdt, "ibm,hypertas-functions", hypertas_prop,
+ sizeof(hypertas_prop))));
+
+ _FDT((fdt_end_node(fdt)));
+
+ /* interrupt controller */
+ _FDT((fdt_begin_node(fdt, "interrupt-controller@0")));
+
+ _FDT((fdt_property_string(fdt, "device_type",
+ "PowerPC-External-Interrupt-Presentation")));
+ _FDT((fdt_property_string(fdt, "compatible", "IBM,ppc-xicp")));
+ _FDT((fdt_property_cell(fdt, "reg", 0)));
+ _FDT((fdt_property(fdt, "interrupt-controller", NULL, 0)));
+ _FDT((fdt_property(fdt, "ibm,interrupt-server-ranges",
+ interrupt_server_ranges_prop,
+ sizeof(interrupt_server_ranges_prop))));
+
+ _FDT((fdt_end_node(fdt)));
+
+ /* vdevice */
+ _FDT((fdt_begin_node(fdt, "vdevice")));
+
+ _FDT((fdt_property_string(fdt, "device_type", "vdevice")));
+ _FDT((fdt_property_string(fdt, "compatible", "IBM,vdevice")));
+ _FDT((fdt_property_cell(fdt, "#address-cells", 0x1)));
+ _FDT((fdt_property_cell(fdt, "#size-cells", 0x0)));
+ _FDT((fdt_property_cell(fdt, "#interrupt-cells", 0x2)));
+ _FDT((fdt_property(fdt, "interrupt-controller", NULL, 0)));
+
+ _FDT((fdt_end_node(fdt)));
+
+ _FDT((fdt_end_node(fdt))); /* close root node */
+ _FDT((fdt_finish(fdt)));
+
+ return fdt;
+}
+
+static void spapr_finalize_fdt(sPAPREnvironment *spapr,
+ target_phys_addr_t fdt_addr,
+ target_phys_addr_t rtas_addr,
+ target_phys_addr_t rtas_size)
+{
+ int ret;
+ void *fdt;
+
+ fdt = qemu_malloc(FDT_MAX_SIZE);
+
+ /* open out the base tree into a temp buffer for the final tweaks */
+ _FDT((fdt_open_into(spapr->fdt_skel, fdt, FDT_MAX_SIZE)));
+
+ ret = spapr_populate_vdevice(spapr->vio_bus, fdt);
+ if (ret < 0) {
+ fprintf(stderr, "couldn't setup vio devices in fdt\n");
+ exit(1);
+ }
+
+ /* RTAS */
+ ret = spapr_rtas_device_tree_setup(fdt, rtas_addr, rtas_size);
+ if (ret < 0) {
+ fprintf(stderr, "Couldn't set up RTAS device tree properties\n");
+ }
+
+ _FDT((fdt_pack(fdt)));
+
+ cpu_physical_memory_write(fdt_addr, fdt, fdt_totalsize(fdt));
+
+ qemu_free(fdt);
+}
+
+static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
+{
+ return (addr & 0x0fffffff) + KERNEL_LOAD_ADDR;
+}
+
+static void emulate_spapr_hypercall(CPUState *env)
+{
+ env->gpr[3] = spapr_hypercall(env, env->gpr[3], &env->gpr[4]);
+}
+
+static void spapr_reset(void *opaque)
+{
+ sPAPREnvironment *spapr = (sPAPREnvironment *)opaque;
+
+ fprintf(stderr, "sPAPR reset\n");
+
+ /* flush out the hash table */
+ memset(spapr->htab, 0, spapr->htab_size);
+
+ /* Load the fdt */
+ spapr_finalize_fdt(spapr, spapr->fdt_addr, spapr->rtas_addr,
+ spapr->rtas_size);
+
+ /* Set up the entry state */
+ first_cpu->gpr[3] = spapr->fdt_addr;
+ first_cpu->gpr[5] = 0;
+ first_cpu->halted = 0;
+ first_cpu->nip = spapr->entry_point;
+
+}
+
+/* pSeries LPAR / sPAPR hardware init */
+static void ppc_spapr_init(ram_addr_t ram_size,
+ const char *boot_device,
+ const char *kernel_filename,
+ const char *kernel_cmdline,
+ const char *initrd_filename,
+ const char *cpu_model)
+{
+ CPUState *env;
+ int i;
+ ram_addr_t ram_offset;
+ uint32_t initrd_base;
+ long kernel_size, initrd_size, fw_size;
+ long pteg_shift = 17;
+ char *filename;
+ int irq = 16;
+
+ spapr = qemu_malloc(sizeof(*spapr));
+ cpu_ppc_hypercall = emulate_spapr_hypercall;
+
+ /* We place the device tree just below either the top of RAM, or
+ * 2GB, so that it can be processed with 32-bit code if
+ * necessary */
+ spapr->fdt_addr = MIN(ram_size, 0x80000000) - FDT_MAX_SIZE;
+ spapr->rtas_addr = spapr->fdt_addr - RTAS_MAX_SIZE;
+
+ /* init CPUs */
+ if (cpu_model == NULL) {
+ cpu_model = "POWER7";
+ }
+ for (i = 0; i < smp_cpus; i++) {
+ env = cpu_init(cpu_model);
+
+ if (!env) {
+ fprintf(stderr, "Unable to find PowerPC CPU definition\n");
+ exit(1);
+ }
+ /* Set time-base frequency to 512 MHz */
+ cpu_ppc_tb_init(env, TIMEBASE_FREQ);
+ qemu_register_reset((QEMUResetHandler *)&cpu_reset, env);
+
+ env->hreset_vector = 0x60;
+ env->hreset_excp_prefix = 0;
+ env->gpr[3] = env->cpu_index;
+ }
+
+ /* allocate RAM */
+ ram_offset = qemu_ram_alloc(NULL, "ppc_spapr.ram", ram_size);
+ cpu_register_physical_memory(0, ram_size, ram_offset);
+
+ /* allocate hash page table. For now we always make this 16mb,
+ * later we should probably make it scale to the size of guest
+ * RAM */
+ spapr->htab_size = 1ULL << (pteg_shift + 7);
+ spapr->htab = qemu_malloc(spapr->htab_size);
+
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ env->external_htab = spapr->htab;
+ env->htab_base = -1;
+ env->htab_mask = spapr->htab_size - 1;
+ }
+
+ filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "spapr-rtas.bin");
+ spapr->rtas_size = load_image_targphys(filename, spapr->rtas_addr,
+ ram_size - spapr->rtas_addr);
+ if (spapr->rtas_size < 0) {
+ hw_error("qemu: could not load LPAR rtas '%s'\n", filename);
+ exit(1);
+ }
+ qemu_free(filename);
+
+ /* Set up Interrupt Controller */
+ spapr->icp = xics_system_init(XICS_IRQS);
+
+ /* Set up VIO bus */
+ spapr->vio_bus = spapr_vio_bus_init();
+
+ for (i = 0; i < MAX_SERIAL_PORTS; i++, irq++) {
+ if (serial_hds[i]) {
+ spapr_vty_create(spapr->vio_bus, i, serial_hds[i],
+ xics_find_qirq(spapr->icp, irq), irq);
+ }
+ }
+
+ for (i = 0; i < nb_nics; i++, irq++) {
+ NICInfo *nd = &nd_table[i];
+
+ if (!nd->model) {
+ nd->model = qemu_strdup("ibmveth");
+ }
+
+ if (strcmp(nd->model, "ibmveth") == 0) {
+ spapr_vlan_create(spapr->vio_bus, 0x1000 + i, nd,
+ xics_find_qirq(spapr->icp, irq), irq);
+ } else {
+ fprintf(stderr, "pSeries (sPAPR) platform does not support "
+ "NIC model '%s' (only ibmveth is supported)\n",
+ nd->model);
+ exit(1);
+ }
+ }
+
+ for (i = 0; i <= drive_get_max_bus(IF_SCSI); i++) {
+ spapr_vscsi_create(spapr->vio_bus, 0x2000 + i,
+ xics_find_qirq(spapr->icp, irq), irq);
+ irq++;
+ }
+
+ if (kernel_filename) {
+ uint64_t lowaddr = 0;
+
+ kernel_size = load_elf(kernel_filename, translate_kernel_address, NULL,
+ NULL, &lowaddr, NULL, 1, ELF_MACHINE, 0);
+ if (kernel_size < 0) {
+ kernel_size = load_image_targphys(kernel_filename,
+ KERNEL_LOAD_ADDR,
+ ram_size - KERNEL_LOAD_ADDR);
+ }
+ if (kernel_size < 0) {
+ fprintf(stderr, "qemu: could not load kernel '%s'\n",
+ kernel_filename);
+ exit(1);
+ }
+
+ /* load initrd */
+ if (initrd_filename) {
+ initrd_base = INITRD_LOAD_ADDR;
+ initrd_size = load_image_targphys(initrd_filename, initrd_base,
+ ram_size - initrd_base);
+ if (initrd_size < 0) {
+ fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
+ initrd_filename);
+ exit(1);
+ }
+ } else {
+ initrd_base = 0;
+ initrd_size = 0;
+ }
+
+ spapr->entry_point = KERNEL_LOAD_ADDR;
+ } else {
+ if (ram_size < (MIN_RAM_SLOF << 20)) {
+ fprintf(stderr, "qemu: pSeries SLOF firmware requires >= "
+ "%ldM guest RAM\n", MIN_RAM_SLOF);
+ exit(1);
+ }
+ filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "slof.bin");
+ fw_size = load_image_targphys(filename, 0, FW_MAX_SIZE);
+ if (fw_size < 0) {
+ hw_error("qemu: could not load LPAR rtas '%s'\n", filename);
+ exit(1);
+ }
+ qemu_free(filename);
+ spapr->entry_point = 0x100;
+ initrd_base = 0;
+ initrd_size = 0;
+
+ /* SLOF will startup the secondary CPUs using RTAS,
+ rather than expecting a kexec() style entry */
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ env->halted = 1;
+ }
+ }
+
+ /* Prepare the device tree */
+ spapr->fdt_skel = spapr_create_fdt_skel(cpu_model,
+ initrd_base, initrd_size,
+ boot_device, kernel_cmdline,
+ pteg_shift + 7);
+ assert(spapr->fdt_skel != NULL);
+
+ qemu_register_reset(spapr_reset, spapr);
+}
+
+static QEMUMachine spapr_machine = {
+ .name = "pseries",
+ .desc = "pSeries Logical Partition (PAPR compliant)",
+ .init = ppc_spapr_init,
+ .max_cpus = MAX_CPUS,
+ .no_vga = 1,
+ .no_parallel = 1,
+ .use_scsi = 1,
+};
+
+static void spapr_machine_init(void)
+{
+ qemu_register_machine(&spapr_machine);
+}
+
+machine_init(spapr_machine_init);
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