2 * QEMU PowerPC 440 Bamboo board emulation
4 * Copyright 2007 IBM Corporation.
6 * Jerone Young <jyoung5@us.ibm.com>
7 * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
8 * Hollis Blanchard <hollisb@us.ibm.com>
10 * This work is licensed under the GNU GPL license version 2 or later.
15 #include "qemu-common.h"
22 #include "device_tree.h"
25 #include "exec/address-spaces.h"
32 #define BINARY_DEVICE_TREE_FILE "bamboo.dtb"
35 #define KERNEL_ADDR 0x1000000
36 #define FDT_ADDR 0x1800000
37 #define RAMDISK_ADDR 0x1900000
39 #define PPC440EP_PCI_CONFIG 0xeec00000
40 #define PPC440EP_PCI_INTACK 0xeed00000
41 #define PPC440EP_PCI_SPECIAL 0xeed00000
42 #define PPC440EP_PCI_REGS 0xef400000
43 #define PPC440EP_PCI_IO 0xe8000000
44 #define PPC440EP_PCI_IOLEN 0x00010000
46 #define PPC440EP_SDRAM_NR_BANKS 4
48 static const unsigned int ppc440ep_sdram_bank_sizes[] = {
49 256<<20, 128<<20, 64<<20, 32<<20, 16<<20, 8<<20, 0
54 static int bamboo_load_device_tree(hwaddr addr,
58 const char *kernel_cmdline)
62 uint32_t mem_reg_property[] = { 0, 0, cpu_to_be32(ramsize) };
66 uint32_t tb_freq = 400000000;
67 uint32_t clock_freq = 400000000;
69 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
73 fdt = load_device_tree(filename, &fdt_size);
79 /* Manipulate device tree in memory. */
81 ret = qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property,
82 sizeof(mem_reg_property));
84 fprintf(stderr, "couldn't set /memory/reg\n");
86 ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start",
89 fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
91 ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end",
92 (initrd_base + initrd_size));
94 fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
96 ret = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs",
99 fprintf(stderr, "couldn't set /chosen/bootargs\n");
101 /* Copy data from the host device tree into the guest. Since the guest can
102 * directly access the timebase without host involvement, we must expose
103 * the correct frequencies. */
105 tb_freq = kvmppc_get_tbfreq();
106 clock_freq = kvmppc_get_clockfreq();
109 qemu_devtree_setprop_cell(fdt, "/cpus/cpu@0", "clock-frequency",
111 qemu_devtree_setprop_cell(fdt, "/cpus/cpu@0", "timebase-frequency",
114 ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
123 /* Create reset TLB entries for BookE, spanning the 32bit addr space. */
124 static void mmubooke_create_initial_mapping(CPUPPCState *env,
128 ppcemb_tlb_t *tlb = &env->tlb.tlbe[0];
131 tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
132 tlb->size = 1 << 31; /* up to 0x80000000 */
133 tlb->EPN = va & TARGET_PAGE_MASK;
134 tlb->RPN = pa & TARGET_PAGE_MASK;
137 tlb = &env->tlb.tlbe[1];
139 tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
140 tlb->size = 1 << 31; /* up to 0xffffffff */
141 tlb->EPN = 0x80000000 & TARGET_PAGE_MASK;
142 tlb->RPN = 0x80000000 & TARGET_PAGE_MASK;
146 static void main_cpu_reset(void *opaque)
148 PowerPCCPU *cpu = opaque;
149 CPUPPCState *env = &cpu->env;
152 env->gpr[1] = (16<<20) - 8;
153 env->gpr[3] = FDT_ADDR;
156 /* Create a mapping for the kernel. */
157 mmubooke_create_initial_mapping(env, 0, 0);
160 static void bamboo_init(QEMUMachineInitArgs *args)
162 ram_addr_t ram_size = args->ram_size;
163 const char *cpu_model = args->cpu_model;
164 const char *kernel_filename = args->kernel_filename;
165 const char *kernel_cmdline = args->kernel_cmdline;
166 const char *initrd_filename = args->initrd_filename;
167 unsigned int pci_irq_nrs[4] = { 28, 27, 26, 25 };
168 MemoryRegion *address_space_mem = get_system_memory();
169 MemoryRegion *ram_memories
170 = g_malloc(PPC440EP_SDRAM_NR_BANKS * sizeof(*ram_memories));
171 hwaddr ram_bases[PPC440EP_SDRAM_NR_BANKS];
172 hwaddr ram_sizes[PPC440EP_SDRAM_NR_BANKS];
179 uint64_t elf_lowaddr;
181 target_long initrd_size = 0;
187 if (cpu_model == NULL) {
190 cpu = cpu_ppc_init(cpu_model);
192 fprintf(stderr, "Unable to initialize CPU!\n");
197 qemu_register_reset(main_cpu_reset, cpu);
198 ppc_booke_timers_init(env, 400000000, 0);
199 ppc_dcr_init(env, NULL, NULL);
201 /* interrupt controller */
202 irqs = g_malloc0(sizeof(qemu_irq) * PPCUIC_OUTPUT_NB);
203 irqs[PPCUIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT];
204 irqs[PPCUIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT];
205 pic = ppcuic_init(env, irqs, 0x0C0, 0, 1);
207 /* SDRAM controller */
208 memset(ram_bases, 0, sizeof(ram_bases));
209 memset(ram_sizes, 0, sizeof(ram_sizes));
210 ram_size = ppc4xx_sdram_adjust(ram_size, PPC440EP_SDRAM_NR_BANKS,
212 ram_bases, ram_sizes,
213 ppc440ep_sdram_bank_sizes);
214 /* XXX 440EP's ECC interrupts are on UIC1, but we've only created UIC0. */
215 ppc4xx_sdram_init(env, pic[14], PPC440EP_SDRAM_NR_BANKS, ram_memories,
216 ram_bases, ram_sizes, 1);
219 dev = sysbus_create_varargs(TYPE_PPC4xx_PCI_HOST_BRIDGE,
221 pic[pci_irq_nrs[0]], pic[pci_irq_nrs[1]],
222 pic[pci_irq_nrs[2]], pic[pci_irq_nrs[3]],
224 pcibus = (PCIBus *)qdev_get_child_bus(dev, "pci.0");
226 fprintf(stderr, "couldn't create PCI controller!\n");
230 isa_mmio_init(PPC440EP_PCI_IO, PPC440EP_PCI_IOLEN);
232 if (serial_hds[0] != NULL) {
233 serial_mm_init(address_space_mem, 0xef600300, 0, pic[0],
234 PPC_SERIAL_MM_BAUDBASE, serial_hds[0],
237 if (serial_hds[1] != NULL) {
238 serial_mm_init(address_space_mem, 0xef600400, 0, pic[1],
239 PPC_SERIAL_MM_BAUDBASE, serial_hds[1],
244 /* Register network interfaces. */
245 for (i = 0; i < nb_nics; i++) {
246 /* There are no PCI NICs on the Bamboo board, but there are
247 * PCI slots, so we can pick whatever default model we want. */
248 pci_nic_init_nofail(&nd_table[i], "e1000", NULL);
253 if (kernel_filename) {
254 success = load_uimage(kernel_filename, &entry, &loadaddr, NULL);
256 success = load_elf(kernel_filename, NULL, NULL, &elf_entry,
257 &elf_lowaddr, NULL, 1, ELF_MACHINE, 0);
259 loadaddr = elf_lowaddr;
261 /* XXX try again as binary */
263 fprintf(stderr, "qemu: could not load kernel '%s'\n",
270 if (initrd_filename) {
271 initrd_size = load_image_targphys(initrd_filename, RAMDISK_ADDR,
272 ram_size - RAMDISK_ADDR);
274 if (initrd_size < 0) {
275 fprintf(stderr, "qemu: could not load ram disk '%s' at %x\n",
276 initrd_filename, RAMDISK_ADDR);
281 /* If we're loading a kernel directly, we must load the device tree too. */
282 if (kernel_filename) {
283 if (bamboo_load_device_tree(FDT_ADDR, ram_size, RAMDISK_ADDR,
284 initrd_size, kernel_cmdline) < 0) {
285 fprintf(stderr, "couldn't load device tree\n");
294 static QEMUMachine bamboo_machine = {
300 static void bamboo_machine_init(void)
302 qemu_register_machine(&bamboo_machine);
305 machine_init(bamboo_machine_init);