Revert "gdbstub: Do not kill target in system emulation mode"
[qemu/qmp-unstable.git] / hw / ppc / ppc440_bamboo.c
blob778970aa9bedff5b2a6ed1e503a4c159082fc0bb
1 /*
2 * QEMU PowerPC 440 Bamboo board emulation
4 * Copyright 2007 IBM Corporation.
5 * Authors:
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.
14 #include "config.h"
15 #include "qemu-common.h"
16 #include "net/net.h"
17 #include "hw/hw.h"
18 #include "hw/pci/pci.h"
19 #include "hw/boards.h"
20 #include "sysemu/kvm.h"
21 #include "kvm_ppc.h"
22 #include "sysemu/device_tree.h"
23 #include "hw/loader.h"
24 #include "elf.h"
25 #include "exec/address-spaces.h"
26 #include "hw/char/serial.h"
27 #include "hw/ppc/ppc.h"
28 #include "ppc405.h"
29 #include "sysemu/sysemu.h"
30 #include "hw/sysbus.h"
32 #define BINARY_DEVICE_TREE_FILE "bamboo.dtb"
34 /* from u-boot */
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
52 static hwaddr entry;
54 static int bamboo_load_device_tree(hwaddr addr,
55 uint32_t ramsize,
56 hwaddr initrd_base,
57 hwaddr initrd_size,
58 const char *kernel_cmdline)
60 int ret = -1;
61 uint32_t mem_reg_property[] = { 0, 0, cpu_to_be32(ramsize) };
62 char *filename;
63 int fdt_size;
64 void *fdt;
65 uint32_t tb_freq = 400000000;
66 uint32_t clock_freq = 400000000;
68 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
69 if (!filename) {
70 goto out;
72 fdt = load_device_tree(filename, &fdt_size);
73 g_free(filename);
74 if (fdt == NULL) {
75 goto out;
78 /* Manipulate device tree in memory. */
80 ret = qemu_fdt_setprop(fdt, "/memory", "reg", mem_reg_property,
81 sizeof(mem_reg_property));
82 if (ret < 0)
83 fprintf(stderr, "couldn't set /memory/reg\n");
85 ret = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start",
86 initrd_base);
87 if (ret < 0)
88 fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
90 ret = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end",
91 (initrd_base + initrd_size));
92 if (ret < 0)
93 fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
95 ret = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs",
96 kernel_cmdline);
97 if (ret < 0)
98 fprintf(stderr, "couldn't set /chosen/bootargs\n");
100 /* Copy data from the host device tree into the guest. Since the guest can
101 * directly access the timebase without host involvement, we must expose
102 * the correct frequencies. */
103 if (kvm_enabled()) {
104 tb_freq = kvmppc_get_tbfreq();
105 clock_freq = kvmppc_get_clockfreq();
108 qemu_fdt_setprop_cell(fdt, "/cpus/cpu@0", "clock-frequency",
109 clock_freq);
110 qemu_fdt_setprop_cell(fdt, "/cpus/cpu@0", "timebase-frequency",
111 tb_freq);
113 rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
114 g_free(fdt);
115 return 0;
117 out:
119 return ret;
122 /* Create reset TLB entries for BookE, spanning the 32bit addr space. */
123 static void mmubooke_create_initial_mapping(CPUPPCState *env,
124 target_ulong va,
125 hwaddr pa)
127 ppcemb_tlb_t *tlb = &env->tlb.tlbe[0];
129 tlb->attr = 0;
130 tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
131 tlb->size = 1U << 31; /* up to 0x80000000 */
132 tlb->EPN = va & TARGET_PAGE_MASK;
133 tlb->RPN = pa & TARGET_PAGE_MASK;
134 tlb->PID = 0;
136 tlb = &env->tlb.tlbe[1];
137 tlb->attr = 0;
138 tlb->prot = PAGE_VALID | ((PAGE_READ | PAGE_WRITE | PAGE_EXEC) << 4);
139 tlb->size = 1U << 31; /* up to 0xffffffff */
140 tlb->EPN = 0x80000000 & TARGET_PAGE_MASK;
141 tlb->RPN = 0x80000000 & TARGET_PAGE_MASK;
142 tlb->PID = 0;
145 static void main_cpu_reset(void *opaque)
147 PowerPCCPU *cpu = opaque;
148 CPUPPCState *env = &cpu->env;
150 cpu_reset(CPU(cpu));
151 env->gpr[1] = (16<<20) - 8;
152 env->gpr[3] = FDT_ADDR;
153 env->nip = entry;
155 /* Create a mapping for the kernel. */
156 mmubooke_create_initial_mapping(env, 0, 0);
159 static void bamboo_init(MachineState *machine)
161 ram_addr_t ram_size = machine->ram_size;
162 const char *cpu_model = machine->cpu_model;
163 const char *kernel_filename = machine->kernel_filename;
164 const char *kernel_cmdline = machine->kernel_cmdline;
165 const char *initrd_filename = machine->initrd_filename;
166 unsigned int pci_irq_nrs[4] = { 28, 27, 26, 25 };
167 MemoryRegion *address_space_mem = get_system_memory();
168 MemoryRegion *isa = g_new(MemoryRegion, 1);
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];
173 qemu_irq *pic;
174 qemu_irq *irqs;
175 PCIBus *pcibus;
176 PowerPCCPU *cpu;
177 CPUPPCState *env;
178 uint64_t elf_entry;
179 uint64_t elf_lowaddr;
180 hwaddr loadaddr = 0;
181 target_long initrd_size = 0;
182 DeviceState *dev;
183 int success;
184 int i;
186 /* Setup CPU. */
187 if (cpu_model == NULL) {
188 cpu_model = "440EP";
190 cpu = cpu_ppc_init(cpu_model);
191 if (cpu == NULL) {
192 fprintf(stderr, "Unable to initialize CPU!\n");
193 exit(1);
195 env = &cpu->env;
197 qemu_register_reset(main_cpu_reset, cpu);
198 ppc_booke_timers_init(cpu, 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,
211 ram_memories,
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);
218 /* PCI */
219 dev = sysbus_create_varargs(TYPE_PPC4xx_PCI_HOST_BRIDGE,
220 PPC440EP_PCI_CONFIG,
221 pic[pci_irq_nrs[0]], pic[pci_irq_nrs[1]],
222 pic[pci_irq_nrs[2]], pic[pci_irq_nrs[3]],
223 NULL);
224 pcibus = (PCIBus *)qdev_get_child_bus(dev, "pci.0");
225 if (!pcibus) {
226 fprintf(stderr, "couldn't create PCI controller!\n");
227 exit(1);
230 memory_region_init_alias(isa, NULL, "isa_mmio",
231 get_system_io(), 0, PPC440EP_PCI_IOLEN);
232 memory_region_add_subregion(get_system_memory(), PPC440EP_PCI_IO, isa);
234 if (serial_hds[0] != NULL) {
235 serial_mm_init(address_space_mem, 0xef600300, 0, pic[0],
236 PPC_SERIAL_MM_BAUDBASE, serial_hds[0],
237 DEVICE_BIG_ENDIAN);
239 if (serial_hds[1] != NULL) {
240 serial_mm_init(address_space_mem, 0xef600400, 0, pic[1],
241 PPC_SERIAL_MM_BAUDBASE, serial_hds[1],
242 DEVICE_BIG_ENDIAN);
245 if (pcibus) {
246 /* Register network interfaces. */
247 for (i = 0; i < nb_nics; i++) {
248 /* There are no PCI NICs on the Bamboo board, but there are
249 * PCI slots, so we can pick whatever default model we want. */
250 pci_nic_init_nofail(&nd_table[i], pcibus, "e1000", NULL);
254 /* Load kernel. */
255 if (kernel_filename) {
256 success = load_uimage(kernel_filename, &entry, &loadaddr, NULL,
257 NULL, NULL);
258 if (success < 0) {
259 success = load_elf(kernel_filename, NULL, NULL, &elf_entry,
260 &elf_lowaddr, NULL, 1, ELF_MACHINE, 0);
261 entry = elf_entry;
262 loadaddr = elf_lowaddr;
264 /* XXX try again as binary */
265 if (success < 0) {
266 fprintf(stderr, "qemu: could not load kernel '%s'\n",
267 kernel_filename);
268 exit(1);
272 /* Load initrd. */
273 if (initrd_filename) {
274 initrd_size = load_image_targphys(initrd_filename, RAMDISK_ADDR,
275 ram_size - RAMDISK_ADDR);
277 if (initrd_size < 0) {
278 fprintf(stderr, "qemu: could not load ram disk '%s' at %x\n",
279 initrd_filename, RAMDISK_ADDR);
280 exit(1);
284 /* If we're loading a kernel directly, we must load the device tree too. */
285 if (kernel_filename) {
286 if (bamboo_load_device_tree(FDT_ADDR, ram_size, RAMDISK_ADDR,
287 initrd_size, kernel_cmdline) < 0) {
288 fprintf(stderr, "couldn't load device tree\n");
289 exit(1);
293 if (kvm_enabled())
294 kvmppc_init();
297 static QEMUMachine bamboo_machine = {
298 .name = "bamboo",
299 .desc = "bamboo",
300 .init = bamboo_init,
303 static void bamboo_machine_init(void)
305 qemu_register_machine(&bamboo_machine);
308 machine_init(bamboo_machine_init);