2 * Qemu PowerPC MPC8544DS board emualtion
4 * Copyright (C) 2009 Freescale Semiconductor, Inc. All rights reserved.
6 * Author: Yu Liu, <yu.liu@freescale.com>
8 * This file is derived from hw/ppc440_bamboo.c,
9 * the copyright for that material belongs to the original owners.
11 * This is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
20 #include "qemu-common.h"
29 #include "device_tree.h"
33 #define BINARY_DEVICE_TREE_FILE "mpc8544ds.dtb"
34 #define UIMAGE_LOAD_BASE 0
35 #define DTB_LOAD_BASE 0x600000
36 #define INITRD_LOAD_BASE 0x2000000
38 #define RAM_SIZES_ALIGN (64UL << 20)
40 #define MPC8544_CCSRBAR_BASE 0xE0000000
41 #define MPC8544_MPIC_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x40000)
42 #define MPC8544_SERIAL0_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x4500)
43 #define MPC8544_SERIAL1_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x4600)
44 #define MPC8544_PCI_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x8000)
45 #define MPC8544_PCI_REGS_SIZE 0x1000
46 #define MPC8544_PCI_IO 0xE1000000
47 #define MPC8544_PCI_IOLEN 0x10000
50 static int mpc8544_copy_soc_cell(void *fdt, const char *node, const char *prop)
55 ret = kvmppc_read_host_property(node, prop, &cell, sizeof(cell));
57 fprintf(stderr, "couldn't read host %s/%s\n", node, prop);
61 ret = qemu_devtree_setprop_cell(fdt, "/cpus/PowerPC,8544@0",
64 fprintf(stderr, "couldn't set guest /cpus/PowerPC,8544@0/%s\n", prop);
73 static void *mpc8544_load_device_tree(target_phys_addr_t addr,
75 target_phys_addr_t initrd_base,
76 target_phys_addr_t initrd_size,
77 const char *kernel_cmdline)
81 uint32_t mem_reg_property[] = {0, ramsize};
87 pathlen = snprintf(NULL, 0, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE) + 1;
88 path = qemu_malloc(pathlen);
90 snprintf(path, pathlen, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE);
92 fdt = load_device_tree(path, &fdt_size);
97 /* Manipulate device tree in memory. */
98 ret = qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property,
99 sizeof(mem_reg_property));
101 fprintf(stderr, "couldn't set /memory/reg\n");
103 ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start",
106 fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
108 ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end",
109 (initrd_base + initrd_size));
111 fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
113 ret = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs",
116 fprintf(stderr, "couldn't set /chosen/bootargs\n");
123 if ((dp = opendir("/proc/device-tree/cpus/")) == NULL) {
124 printf("Can't open directory /proc/device-tree/cpus/\n");
129 while ((dirp = readdir(dp)) != NULL) {
130 if (strncmp(dirp->d_name, "PowerPC", 7) == 0) {
131 snprintf(buf, 128, "/cpus/%s", dirp->d_name);
136 if (buf[0] == '\0') {
137 printf("Unknow host!\n");
141 mpc8544_copy_soc_cell(fdt, buf, "clock-frequency");
142 mpc8544_copy_soc_cell(fdt, buf, "timebase-frequency");
145 cpu_physical_memory_write (addr, (void *)fdt, fdt_size);
153 static void mpc8544ds_init(ram_addr_t ram_size,
154 const char *boot_device,
155 const char *kernel_filename,
156 const char *kernel_cmdline,
157 const char *initrd_filename,
158 const char *cpu_model)
163 uint64_t elf_lowaddr;
164 target_ulong entry=0;
165 target_ulong loadaddr=UIMAGE_LOAD_BASE;
166 target_long kernel_size=0;
167 target_ulong dt_base=DTB_LOAD_BASE;
168 target_ulong initrd_base=INITRD_LOAD_BASE;
169 target_long initrd_size=0;
172 unsigned int pci_irq_nrs[4] = {1, 2, 3, 4};
173 qemu_irq *irqs, *mpic, *pci_irqs;
174 SerialState * serial[2];
177 env = cpu_ppc_init("e500v2_v30");
179 fprintf(stderr, "Unable to initialize CPU!\n");
183 /* Fixup Memory size on a alignment boundary */
184 ram_size &= ~(RAM_SIZES_ALIGN - 1);
186 /* Register Memory */
187 cpu_register_physical_memory(0, ram_size, qemu_ram_alloc(ram_size));
190 irqs = qemu_mallocz(sizeof(qemu_irq) * OPENPIC_OUTPUT_NB);
191 irqs[OPENPIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPCE500_INPUT_INT];
192 irqs[OPENPIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPCE500_INPUT_CINT];
193 mpic = mpic_init(MPC8544_MPIC_REGS_BASE, 1, &irqs, NULL);
197 serial[0] = serial_mm_init(MPC8544_SERIAL0_REGS_BASE,
198 0, mpic[12+26], 399193,
202 serial[0] = serial_mm_init(MPC8544_SERIAL1_REGS_BASE,
203 0, mpic[12+26], 399193,
207 pci_irqs = qemu_malloc(sizeof(qemu_irq) * 4);
208 pci_irqs[0] = mpic[pci_irq_nrs[0]];
209 pci_irqs[1] = mpic[pci_irq_nrs[1]];
210 pci_irqs[2] = mpic[pci_irq_nrs[2]];
211 pci_irqs[3] = mpic[pci_irq_nrs[3]];
212 pci_bus = ppce500_pci_init(pci_irqs, MPC8544_PCI_REGS_BASE);
214 printf("couldn't create PCI controller!\n");
216 isa_mmio_init(MPC8544_PCI_IO, MPC8544_PCI_IOLEN);
221 /* Add virtio block devices. */
222 while ((i = drive_get_index(IF_VIRTIO, 0, unit_id)) != -1) {
223 pci_create_simple(pci_bus, -1, "virtio-blk-pci");
227 /* Register network interfaces. */
228 for (i = 0; i < nb_nics; i++) {
229 pci_nic_init(pci_bus, &nd_table[i], -1, "virtio");
234 if (kernel_filename) {
235 kernel_size = load_uimage(kernel_filename, &entry, &loadaddr, NULL);
236 if (kernel_size < 0) {
237 kernel_size = load_elf(kernel_filename, 0, &elf_entry, &elf_lowaddr,
240 loadaddr = elf_lowaddr;
242 /* XXX try again as binary */
243 if (kernel_size < 0) {
244 fprintf(stderr, "qemu: could not load kernel '%s'\n",
251 if (initrd_filename) {
252 initrd_size = load_image_targphys(initrd_filename, initrd_base,
253 ram_size - initrd_base);
255 if (initrd_size < 0) {
256 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
262 /* If we're loading a kernel directly, we must load the device tree too. */
263 if (kernel_filename) {
264 fdt = mpc8544_load_device_tree(dt_base, ram_size,
265 initrd_base, initrd_size, kernel_cmdline);
267 fprintf(stderr, "couldn't load device tree\n");
271 /* Set initial guest state. */
272 env->gpr[1] = (16<<20) - 8;
273 env->gpr[3] = dt_base;
275 /* XXX we currently depend on KVM to create some initial TLB entries. */
284 static QEMUMachine mpc8544ds_machine = {
287 .init = mpc8544ds_init,
290 static void mpc8544ds_machine_init(void)
292 qemu_register_machine(&mpc8544ds_machine);
295 machine_init(mpc8544ds_machine_init);