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"
25 #include "virtio-blk.h"
30 #include "device_tree.h"
34 #define BINARY_DEVICE_TREE_FILE "mpc8544ds.dtb"
35 #define UIMAGE_LOAD_BASE 0
36 #define DTB_LOAD_BASE 0x600000
37 #define INITRD_LOAD_BASE 0x2000000
39 #define RAM_SIZES_ALIGN (64UL << 20)
41 #define MPC8544_CCSRBAR_BASE 0xE0000000
42 #define MPC8544_MPIC_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x40000)
43 #define MPC8544_SERIAL0_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x4500)
44 #define MPC8544_SERIAL1_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x4600)
45 #define MPC8544_PCI_REGS_BASE (MPC8544_CCSRBAR_BASE + 0x8000)
46 #define MPC8544_PCI_REGS_SIZE 0x1000
47 #define MPC8544_PCI_IO 0xE1000000
48 #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);
72 static void *mpc8544_load_device_tree(void *addr,
74 target_phys_addr_t initrd_base,
75 target_phys_addr_t initrd_size,
76 const char *kernel_cmdline)
80 uint32_t mem_reg_property[] = {0, ramsize};
85 pathlen = snprintf(NULL, 0, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE) + 1;
86 path = qemu_malloc(pathlen);
88 snprintf(path, pathlen, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE);
90 fdt = load_device_tree(path, addr);
95 /* Manipulate device tree in memory. */
96 ret = qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property,
97 sizeof(mem_reg_property));
99 fprintf(stderr, "couldn't set /memory/reg\n");
101 ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start",
104 fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
106 ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end",
107 (initrd_base + initrd_size));
109 fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
111 ret = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs",
114 fprintf(stderr, "couldn't set /chosen/bootargs\n");
121 if ((dp = opendir("/proc/device-tree/cpus/")) == NULL) {
122 printf("Can't open directory /proc/device-tree/cpus/\n");
127 while ((dirp = readdir(dp)) != NULL) {
128 if (strncmp(dirp->d_name, "PowerPC", 7) == 0) {
129 snprintf(buf, 128, "/cpus/%s", dirp->d_name);
134 if (buf[0] == '\0') {
135 printf("Unknow host!\n");
139 mpc8544_copy_soc_cell(fdt, buf, "clock-frequency");
140 mpc8544_copy_soc_cell(fdt, buf, "timebase-frequency");
149 static void mpc8544ds_init(ram_addr_t ram_size, int vga_ram_size,
150 const char *boot_device,
151 const char *kernel_filename,
152 const char *kernel_cmdline,
153 const char *initrd_filename,
154 const char *cpu_model)
159 uint64_t elf_lowaddr;
160 target_ulong entry=0;
161 target_ulong loadaddr=UIMAGE_LOAD_BASE;
162 target_long kernel_size=0;
163 target_ulong dt_base=DTB_LOAD_BASE;
164 target_ulong initrd_base=INITRD_LOAD_BASE;
165 target_long initrd_size=0;
168 unsigned int pci_irq_nrs[4] = {1, 2, 3, 4};
169 qemu_irq *irqs, *mpic, *pci_irqs;
170 SerialState * serial[2];
173 env = cpu_ppc_init("e500v2_v30");
175 fprintf(stderr, "Unable to initialize CPU!\n");
179 /* Fixup Memory size on a alignment boundary */
180 ram_size &= ~(RAM_SIZES_ALIGN - 1);
182 /* Register Memory */
183 cpu_register_physical_memory(0, ram_size, 0);
186 irqs = qemu_mallocz(sizeof(qemu_irq) * OPENPIC_OUTPUT_NB);
187 irqs[OPENPIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPCE500_INPUT_INT];
188 irqs[OPENPIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPCE500_INPUT_CINT];
189 mpic = mpic_init(MPC8544_MPIC_REGS_BASE, 1, &irqs, NULL);
193 serial[0] = serial_mm_init(MPC8544_SERIAL0_REGS_BASE,
194 0, mpic[12+26], 399193,
198 serial[0] = serial_mm_init(MPC8544_SERIAL1_REGS_BASE,
199 0, mpic[12+26], 399193,
203 pci_irqs = qemu_malloc(sizeof(qemu_irq) * 4);
204 pci_irqs[0] = mpic[pci_irq_nrs[0]];
205 pci_irqs[1] = mpic[pci_irq_nrs[1]];
206 pci_irqs[2] = mpic[pci_irq_nrs[2]];
207 pci_irqs[3] = mpic[pci_irq_nrs[3]];
208 pci_bus = ppce500_pci_init(pci_irqs, MPC8544_PCI_REGS_BASE);
210 printf("couldn't create PCI controller!\n");
212 isa_mmio_init(MPC8544_PCI_IO, MPC8544_PCI_IOLEN);
217 /* Add virtio block devices. */
218 while ((i = drive_get_index(IF_VIRTIO, 0, unit_id)) != -1) {
219 virtio_blk_init(pci_bus, drives_table[i].bdrv);
223 /* Register network interfaces. */
224 for (i = 0; i < nb_nics; i++) {
225 pci_nic_init(pci_bus, &nd_table[i], -1, "virtio");
230 if (kernel_filename) {
231 kernel_size = load_uimage(kernel_filename, &entry, &loadaddr, NULL);
232 if (kernel_size < 0) {
233 kernel_size = load_elf(kernel_filename, 0, &elf_entry, &elf_lowaddr,
236 loadaddr = elf_lowaddr;
238 /* XXX try again as binary */
239 if (kernel_size < 0) {
240 fprintf(stderr, "qemu: could not load kernel '%s'\n",
247 if (initrd_filename) {
248 initrd_size = load_image(initrd_filename, phys_ram_base + initrd_base);
250 if (initrd_size < 0) {
251 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
257 /* If we're loading a kernel directly, we must load the device tree too. */
258 if (kernel_filename) {
259 fdt = mpc8544_load_device_tree(phys_ram_base + dt_base, ram_size,
260 initrd_base, initrd_size, kernel_cmdline);
262 fprintf(stderr, "couldn't load device tree\n");
266 /* Set initial guest state. */
267 env->gpr[1] = (16<<20) - 8;
268 env->gpr[3] = dt_base;
270 /* XXX we currently depend on KVM to create some initial TLB entries. */
279 QEMUMachine mpc8544ds_machine = {
282 .init = mpc8544ds_init,
283 .ram_require = RAM_SIZES_ALIGN | RAMSIZE_FIXED,