2 * QEMU PowerPC 440 Bamboo board emulation
4 * Copyright 2007 IBM Corporation.
10 * This work is licensed under the GNU GPL license version 2 or later.
14 #include "qemu/osdep.h"
15 #include "qemu-common.h"
16 #include "qemu/error-report.h"
19 #include "hw/pci/pci.h"
20 #include "hw/boards.h"
21 #include "sysemu/kvm.h"
23 #include "sysemu/device_tree.h"
24 #include "hw/loader.h"
26 #include "exec/address-spaces.h"
27 #include "hw/char/serial.h"
28 #include "hw/ppc/ppc.h"
30 #include "sysemu/sysemu.h"
31 #include "sysemu/qtest.h"
32 #include "hw/sysbus.h"
34 #define BINARY_DEVICE_TREE_FILE "bamboo.dtb"
37 #define KERNEL_ADDR 0x1000000
38 #define FDT_ADDR 0x1800000
39 #define RAMDISK_ADDR 0x1900000
41 #define PPC440EP_PCI_CONFIG 0xeec00000
42 #define PPC440EP_PCI_INTACK 0xeed00000
43 #define PPC440EP_PCI_SPECIAL 0xeed00000
44 #define PPC440EP_PCI_REGS 0xef400000
45 #define PPC440EP_PCI_IO 0xe8000000
46 #define PPC440EP_PCI_IOLEN 0x00010000
48 #define PPC440EP_SDRAM_NR_BANKS 4
50 static const unsigned int ppc440ep_sdram_bank_sizes[] = {
51 256<<20, 128<<20, 64<<20, 32<<20, 16<<20, 8<<20, 0
56 static int bamboo_load_device_tree(hwaddr addr,
60 const char *kernel_cmdline)
63 uint32_t mem_reg_property[] = { 0, 0, cpu_to_be32(ramsize) };
67 uint32_t tb_freq = 400000000;
68 uint32_t clock_freq = 400000000;
70 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
74 fdt = load_device_tree(filename, &fdt_size);
80 /* Manipulate device tree in memory. */
82 ret = qemu_fdt_setprop(fdt, "/memory", "reg", mem_reg_property,
83 sizeof(mem_reg_property));
85 fprintf(stderr, "couldn't set /memory/reg\n");
87 ret = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start",
90 fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
92 ret = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end",
93 (initrd_base + initrd_size));
95 fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
97 ret = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs",
100 fprintf(stderr, "couldn't set /chosen/bootargs\n");
102 /* Copy data from the host device tree into the guest. Since the guest can
103 * directly access the timebase without host involvement, we must expose
104 * the correct frequencies. */
106 tb_freq = kvmppc_get_tbfreq();
107 clock_freq = kvmppc_get_clockfreq();
110 qemu_fdt_setprop_cell(fdt, "/cpus/cpu@0", "clock-frequency",
112 qemu_fdt_setprop_cell(fdt, "/cpus/cpu@0", "timebase-frequency",
115 rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
124 /* Create reset TLB entries for BookE, spanning the 32bit addr space. */
125 static void mmubooke_create_initial_mapping(CPUPPCState *env,
129 ppcemb_tlb_t *tlb = &env->tlb.tlbe[0];
132 tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
133 tlb->size = 1U << 31; /* up to 0x80000000 */
134 tlb->EPN = va & TARGET_PAGE_MASK;
135 tlb->RPN = pa & TARGET_PAGE_MASK;
138 tlb = &env->tlb.tlbe[1];
140 tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
141 tlb->size = 1U << 31; /* up to 0xffffffff */
142 tlb->EPN = 0x80000000 & TARGET_PAGE_MASK;
143 tlb->RPN = 0x80000000 & TARGET_PAGE_MASK;
147 static void main_cpu_reset(void *opaque)
149 PowerPCCPU *cpu = opaque;
150 CPUPPCState *env = &cpu->env;
153 env->gpr[1] = (16<<20) - 8;
154 env->gpr[3] = FDT_ADDR;
157 /* Create a mapping for the kernel. */
158 mmubooke_create_initial_mapping(env, 0, 0);
161 static void bamboo_init(MachineState *machine)
163 ram_addr_t ram_size = machine->ram_size;
164 const char *kernel_filename = machine->kernel_filename;
165 const char *kernel_cmdline = machine->kernel_cmdline;
166 const char *initrd_filename = machine->initrd_filename;
167 unsigned int pci_irq_nrs[4] = { 28, 27, 26, 25 };
168 MemoryRegion *address_space_mem = get_system_memory();
169 MemoryRegion *isa = g_new(MemoryRegion, 1);
170 MemoryRegion *ram_memories
171 = g_malloc(PPC440EP_SDRAM_NR_BANKS * sizeof(*ram_memories));
172 hwaddr ram_bases[PPC440EP_SDRAM_NR_BANKS];
173 hwaddr ram_sizes[PPC440EP_SDRAM_NR_BANKS];
180 uint64_t elf_lowaddr;
182 target_long initrd_size = 0;
187 cpu = POWERPC_CPU(cpu_create(machine->cpu_type));
190 if (env->mmu_model != POWERPC_MMU_BOOKE) {
191 fprintf(stderr, "MMU model %i not supported by this machine.\n",
197 if (!qtest_enabled()) {
198 warn_report("qemu-system-ppcemb is deprecated, "
199 "please use qemu-system-ppc instead.");
203 qemu_register_reset(main_cpu_reset, cpu);
204 ppc_booke_timers_init(cpu, 400000000, 0);
205 ppc_dcr_init(env, NULL, NULL);
207 /* interrupt controller */
208 irqs = g_malloc0(sizeof(qemu_irq) * PPCUIC_OUTPUT_NB);
209 irqs[PPCUIC_OUTPUT_INT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT];
210 irqs[PPCUIC_OUTPUT_CINT] = ((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT];
211 pic = ppcuic_init(env, irqs, 0x0C0, 0, 1);
213 /* SDRAM controller */
214 memset(ram_bases, 0, sizeof(ram_bases));
215 memset(ram_sizes, 0, sizeof(ram_sizes));
216 ram_size = ppc4xx_sdram_adjust(ram_size, PPC440EP_SDRAM_NR_BANKS,
218 ram_bases, ram_sizes,
219 ppc440ep_sdram_bank_sizes);
220 /* XXX 440EP's ECC interrupts are on UIC1, but we've only created UIC0. */
221 ppc4xx_sdram_init(env, pic[14], PPC440EP_SDRAM_NR_BANKS, ram_memories,
222 ram_bases, ram_sizes, 1);
225 dev = sysbus_create_varargs(TYPE_PPC4xx_PCI_HOST_BRIDGE,
227 pic[pci_irq_nrs[0]], pic[pci_irq_nrs[1]],
228 pic[pci_irq_nrs[2]], pic[pci_irq_nrs[3]],
230 pcibus = (PCIBus *)qdev_get_child_bus(dev, "pci.0");
232 fprintf(stderr, "couldn't create PCI controller!\n");
236 memory_region_init_alias(isa, NULL, "isa_mmio",
237 get_system_io(), 0, PPC440EP_PCI_IOLEN);
238 memory_region_add_subregion(get_system_memory(), PPC440EP_PCI_IO, isa);
240 if (serial_hds[0] != NULL) {
241 serial_mm_init(address_space_mem, 0xef600300, 0, pic[0],
242 PPC_SERIAL_MM_BAUDBASE, serial_hds[0],
245 if (serial_hds[1] != NULL) {
246 serial_mm_init(address_space_mem, 0xef600400, 0, pic[1],
247 PPC_SERIAL_MM_BAUDBASE, serial_hds[1],
252 /* Register network interfaces. */
253 for (i = 0; i < nb_nics; i++) {
254 /* There are no PCI NICs on the Bamboo board, but there are
255 * PCI slots, so we can pick whatever default model we want. */
256 pci_nic_init_nofail(&nd_table[i], pcibus, "e1000", NULL);
261 if (kernel_filename) {
262 success = load_uimage(kernel_filename, &entry, &loadaddr, NULL,
265 success = load_elf(kernel_filename, NULL, NULL, &elf_entry,
266 &elf_lowaddr, NULL, 1, PPC_ELF_MACHINE,
269 loadaddr = elf_lowaddr;
271 /* XXX try again as binary */
273 fprintf(stderr, "qemu: could not load kernel '%s'\n",
280 if (initrd_filename) {
281 initrd_size = load_image_targphys(initrd_filename, RAMDISK_ADDR,
282 ram_size - RAMDISK_ADDR);
284 if (initrd_size < 0) {
285 fprintf(stderr, "qemu: could not load ram disk '%s' at %x\n",
286 initrd_filename, RAMDISK_ADDR);
291 /* If we're loading a kernel directly, we must load the device tree too. */
292 if (kernel_filename) {
293 if (bamboo_load_device_tree(FDT_ADDR, ram_size, RAMDISK_ADDR,
294 initrd_size, kernel_cmdline) < 0) {
295 fprintf(stderr, "couldn't load device tree\n");
301 static void bamboo_machine_init(MachineClass *mc)
304 mc->init = bamboo_init;
305 mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("440epb");
308 DEFINE_MACHINE("bamboo", bamboo_machine_init)