xref: /openbmc/qemu/hw/ppc/e500.c (revision 8e6fe6b8)
1 /*
2  * QEMU PowerPC e500-based platforms
3  *
4  * Copyright (C) 2009 Freescale Semiconductor, Inc. All rights reserved.
5  *
6  * Author: Yu Liu,     <yu.liu@freescale.com>
7  *
8  * This file is derived from hw/ppc440_bamboo.c,
9  * the copyright for that material belongs to the original owners.
10  *
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.
15  */
16 
17 #include "qemu/osdep.h"
18 #include "qemu-common.h"
19 #include "qemu/units.h"
20 #include "qapi/error.h"
21 #include "e500.h"
22 #include "e500-ccsr.h"
23 #include "net/net.h"
24 #include "qemu/config-file.h"
25 #include "hw/hw.h"
26 #include "hw/char/serial.h"
27 #include "hw/pci/pci.h"
28 #include "hw/boards.h"
29 #include "sysemu/sysemu.h"
30 #include "sysemu/kvm.h"
31 #include "kvm_ppc.h"
32 #include "sysemu/device_tree.h"
33 #include "hw/ppc/openpic.h"
34 #include "hw/ppc/openpic_kvm.h"
35 #include "hw/ppc/ppc.h"
36 #include "hw/loader.h"
37 #include "elf.h"
38 #include "hw/sysbus.h"
39 #include "exec/address-spaces.h"
40 #include "qemu/host-utils.h"
41 #include "qemu/option.h"
42 #include "hw/pci-host/ppce500.h"
43 #include "qemu/error-report.h"
44 #include "hw/platform-bus.h"
45 #include "hw/net/fsl_etsec/etsec.h"
46 #include "hw/i2c/i2c.h"
47 
48 #define EPAPR_MAGIC                (0x45504150)
49 #define BINARY_DEVICE_TREE_FILE    "mpc8544ds.dtb"
50 #define DTC_LOAD_PAD               0x1800000
51 #define DTC_PAD_MASK               0xFFFFF
52 #define DTB_MAX_SIZE               (8 * MiB)
53 #define INITRD_LOAD_PAD            0x2000000
54 #define INITRD_PAD_MASK            0xFFFFFF
55 
56 #define RAM_SIZES_ALIGN            (64 * MiB)
57 
58 /* TODO: parameterize */
59 #define MPC8544_CCSRBAR_SIZE       0x00100000ULL
60 #define MPC8544_MPIC_REGS_OFFSET   0x40000ULL
61 #define MPC8544_MSI_REGS_OFFSET   0x41600ULL
62 #define MPC8544_SERIAL0_REGS_OFFSET 0x4500ULL
63 #define MPC8544_SERIAL1_REGS_OFFSET 0x4600ULL
64 #define MPC8544_PCI_REGS_OFFSET    0x8000ULL
65 #define MPC8544_PCI_REGS_SIZE      0x1000ULL
66 #define MPC8544_UTIL_OFFSET        0xe0000ULL
67 #define MPC8XXX_GPIO_OFFSET        0x000FF000ULL
68 #define MPC8544_I2C_REGS_OFFSET    0x3000ULL
69 #define MPC8XXX_GPIO_IRQ           47
70 #define MPC8544_I2C_IRQ            43
71 #define RTC_REGS_OFFSET            0x68
72 
73 struct boot_info
74 {
75     uint32_t dt_base;
76     uint32_t dt_size;
77     uint32_t entry;
78 };
79 
80 static uint32_t *pci_map_create(void *fdt, uint32_t mpic, int first_slot,
81                                 int nr_slots, int *len)
82 {
83     int i = 0;
84     int slot;
85     int pci_irq;
86     int host_irq;
87     int last_slot = first_slot + nr_slots;
88     uint32_t *pci_map;
89 
90     *len = nr_slots * 4 * 7 * sizeof(uint32_t);
91     pci_map = g_malloc(*len);
92 
93     for (slot = first_slot; slot < last_slot; slot++) {
94         for (pci_irq = 0; pci_irq < 4; pci_irq++) {
95             pci_map[i++] = cpu_to_be32(slot << 11);
96             pci_map[i++] = cpu_to_be32(0x0);
97             pci_map[i++] = cpu_to_be32(0x0);
98             pci_map[i++] = cpu_to_be32(pci_irq + 1);
99             pci_map[i++] = cpu_to_be32(mpic);
100             host_irq = ppce500_pci_map_irq_slot(slot, pci_irq);
101             pci_map[i++] = cpu_to_be32(host_irq + 1);
102             pci_map[i++] = cpu_to_be32(0x1);
103         }
104     }
105 
106     assert((i * sizeof(uint32_t)) == *len);
107 
108     return pci_map;
109 }
110 
111 static void dt_serial_create(void *fdt, unsigned long long offset,
112                              const char *soc, const char *mpic,
113                              const char *alias, int idx, bool defcon)
114 {
115     char *ser;
116 
117     ser = g_strdup_printf("%s/serial@%llx", soc, offset);
118     qemu_fdt_add_subnode(fdt, ser);
119     qemu_fdt_setprop_string(fdt, ser, "device_type", "serial");
120     qemu_fdt_setprop_string(fdt, ser, "compatible", "ns16550");
121     qemu_fdt_setprop_cells(fdt, ser, "reg", offset, 0x100);
122     qemu_fdt_setprop_cell(fdt, ser, "cell-index", idx);
123     qemu_fdt_setprop_cell(fdt, ser, "clock-frequency", 0);
124     qemu_fdt_setprop_cells(fdt, ser, "interrupts", 42, 2);
125     qemu_fdt_setprop_phandle(fdt, ser, "interrupt-parent", mpic);
126     qemu_fdt_setprop_string(fdt, "/aliases", alias, ser);
127 
128     if (defcon) {
129         /*
130          * "linux,stdout-path" and "stdout" properties are deprecated by linux
131          * kernel. New platforms should only use the "stdout-path" property. Set
132          * the new property and continue using older property to remain
133          * compatible with the existing firmware.
134          */
135         qemu_fdt_setprop_string(fdt, "/chosen", "linux,stdout-path", ser);
136         qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", ser);
137     }
138     g_free(ser);
139 }
140 
141 static void create_dt_mpc8xxx_gpio(void *fdt, const char *soc, const char *mpic)
142 {
143     hwaddr mmio0 = MPC8XXX_GPIO_OFFSET;
144     int irq0 = MPC8XXX_GPIO_IRQ;
145     gchar *node = g_strdup_printf("%s/gpio@%"PRIx64, soc, mmio0);
146     gchar *poweroff = g_strdup_printf("%s/power-off", soc);
147     int gpio_ph;
148 
149     qemu_fdt_add_subnode(fdt, node);
150     qemu_fdt_setprop_string(fdt, node, "compatible", "fsl,qoriq-gpio");
151     qemu_fdt_setprop_cells(fdt, node, "reg", mmio0, 0x1000);
152     qemu_fdt_setprop_cells(fdt, node, "interrupts", irq0, 0x2);
153     qemu_fdt_setprop_phandle(fdt, node, "interrupt-parent", mpic);
154     qemu_fdt_setprop_cells(fdt, node, "#gpio-cells", 2);
155     qemu_fdt_setprop(fdt, node, "gpio-controller", NULL, 0);
156     gpio_ph = qemu_fdt_alloc_phandle(fdt);
157     qemu_fdt_setprop_cell(fdt, node, "phandle", gpio_ph);
158     qemu_fdt_setprop_cell(fdt, node, "linux,phandle", gpio_ph);
159 
160     /* Power Off Pin */
161     qemu_fdt_add_subnode(fdt, poweroff);
162     qemu_fdt_setprop_string(fdt, poweroff, "compatible", "gpio-poweroff");
163     qemu_fdt_setprop_cells(fdt, poweroff, "gpios", gpio_ph, 0, 0);
164 
165     g_free(node);
166     g_free(poweroff);
167 }
168 
169 static void dt_rtc_create(void *fdt, const char *i2c, const char *alias)
170 {
171     int offset = RTC_REGS_OFFSET;
172 
173     gchar *rtc = g_strdup_printf("%s/rtc@%"PRIx32, i2c, offset);
174     qemu_fdt_add_subnode(fdt, rtc);
175     qemu_fdt_setprop_string(fdt, rtc, "compatible", "pericom,pt7c4338");
176     qemu_fdt_setprop_cells(fdt, rtc, "reg", offset);
177     qemu_fdt_setprop_string(fdt, "/aliases", alias, rtc);
178 
179     g_free(rtc);
180 }
181 
182 static void dt_i2c_create(void *fdt, const char *soc, const char *mpic,
183                              const char *alias)
184 {
185     hwaddr mmio0 = MPC8544_I2C_REGS_OFFSET;
186     int irq0 = MPC8544_I2C_IRQ;
187 
188     gchar *i2c = g_strdup_printf("%s/i2c@%"PRIx64, soc, mmio0);
189     qemu_fdt_add_subnode(fdt, i2c);
190     qemu_fdt_setprop_string(fdt, i2c, "device_type", "i2c");
191     qemu_fdt_setprop_string(fdt, i2c, "compatible", "fsl-i2c");
192     qemu_fdt_setprop_cells(fdt, i2c, "reg", mmio0, 0x14);
193     qemu_fdt_setprop_cells(fdt, i2c, "cell-index", 0);
194     qemu_fdt_setprop_cells(fdt, i2c, "interrupts", irq0, 0x2);
195     qemu_fdt_setprop_phandle(fdt, i2c, "interrupt-parent", mpic);
196     qemu_fdt_setprop_string(fdt, "/aliases", alias, i2c);
197 
198     g_free(i2c);
199 }
200 
201 
202 typedef struct PlatformDevtreeData {
203     void *fdt;
204     const char *mpic;
205     int irq_start;
206     const char *node;
207     PlatformBusDevice *pbus;
208 } PlatformDevtreeData;
209 
210 static int create_devtree_etsec(SysBusDevice *sbdev, PlatformDevtreeData *data)
211 {
212     eTSEC *etsec = ETSEC_COMMON(sbdev);
213     PlatformBusDevice *pbus = data->pbus;
214     hwaddr mmio0 = platform_bus_get_mmio_addr(pbus, sbdev, 0);
215     int irq0 = platform_bus_get_irqn(pbus, sbdev, 0);
216     int irq1 = platform_bus_get_irqn(pbus, sbdev, 1);
217     int irq2 = platform_bus_get_irqn(pbus, sbdev, 2);
218     gchar *node = g_strdup_printf("/platform/ethernet@%"PRIx64, mmio0);
219     gchar *group = g_strdup_printf("%s/queue-group", node);
220     void *fdt = data->fdt;
221 
222     assert((int64_t)mmio0 >= 0);
223     assert(irq0 >= 0);
224     assert(irq1 >= 0);
225     assert(irq2 >= 0);
226 
227     qemu_fdt_add_subnode(fdt, node);
228     qemu_fdt_setprop_string(fdt, node, "device_type", "network");
229     qemu_fdt_setprop_string(fdt, node, "compatible", "fsl,etsec2");
230     qemu_fdt_setprop_string(fdt, node, "model", "eTSEC");
231     qemu_fdt_setprop(fdt, node, "local-mac-address", etsec->conf.macaddr.a, 6);
232     qemu_fdt_setprop_cells(fdt, node, "fixed-link", 0, 1, 1000, 0, 0);
233 
234     qemu_fdt_add_subnode(fdt, group);
235     qemu_fdt_setprop_cells(fdt, group, "reg", mmio0, 0x1000);
236     qemu_fdt_setprop_cells(fdt, group, "interrupts",
237         data->irq_start + irq0, 0x2,
238         data->irq_start + irq1, 0x2,
239         data->irq_start + irq2, 0x2);
240 
241     g_free(node);
242     g_free(group);
243 
244     return 0;
245 }
246 
247 static void sysbus_device_create_devtree(SysBusDevice *sbdev, void *opaque)
248 {
249     PlatformDevtreeData *data = opaque;
250     bool matched = false;
251 
252     if (object_dynamic_cast(OBJECT(sbdev), TYPE_ETSEC_COMMON)) {
253         create_devtree_etsec(sbdev, data);
254         matched = true;
255     }
256 
257     if (!matched) {
258         error_report("Device %s is not supported by this machine yet.",
259                      qdev_fw_name(DEVICE(sbdev)));
260         exit(1);
261     }
262 }
263 
264 static void platform_bus_create_devtree(PPCE500MachineState *pms,
265                                         void *fdt, const char *mpic)
266 {
267     const PPCE500MachineClass *pmc = PPCE500_MACHINE_GET_CLASS(pms);
268     gchar *node = g_strdup_printf("/platform@%"PRIx64, pmc->platform_bus_base);
269     const char platcomp[] = "qemu,platform\0simple-bus";
270     uint64_t addr = pmc->platform_bus_base;
271     uint64_t size = pmc->platform_bus_size;
272     int irq_start = pmc->platform_bus_first_irq;
273 
274     /* Create a /platform node that we can put all devices into */
275 
276     qemu_fdt_add_subnode(fdt, node);
277     qemu_fdt_setprop(fdt, node, "compatible", platcomp, sizeof(platcomp));
278 
279     /* Our platform bus region is less than 32bit big, so 1 cell is enough for
280        address and size */
281     qemu_fdt_setprop_cells(fdt, node, "#size-cells", 1);
282     qemu_fdt_setprop_cells(fdt, node, "#address-cells", 1);
283     qemu_fdt_setprop_cells(fdt, node, "ranges", 0, addr >> 32, addr, size);
284 
285     qemu_fdt_setprop_phandle(fdt, node, "interrupt-parent", mpic);
286 
287     /* Create dt nodes for dynamic devices */
288     PlatformDevtreeData data = {
289         .fdt = fdt,
290         .mpic = mpic,
291         .irq_start = irq_start,
292         .node = node,
293         .pbus = pms->pbus_dev,
294     };
295 
296     /* Loop through all dynamic sysbus devices and create nodes for them */
297     foreach_dynamic_sysbus_device(sysbus_device_create_devtree, &data);
298 
299     g_free(node);
300 }
301 
302 static int ppce500_load_device_tree(PPCE500MachineState *pms,
303                                     hwaddr addr,
304                                     hwaddr initrd_base,
305                                     hwaddr initrd_size,
306                                     hwaddr kernel_base,
307                                     hwaddr kernel_size,
308                                     bool dry_run)
309 {
310     MachineState *machine = MACHINE(pms);
311     const PPCE500MachineClass *pmc = PPCE500_MACHINE_GET_CLASS(pms);
312     CPUPPCState *env = first_cpu->env_ptr;
313     int ret = -1;
314     uint64_t mem_reg_property[] = { 0, cpu_to_be64(machine->ram_size) };
315     int fdt_size;
316     void *fdt;
317     uint8_t hypercall[16];
318     uint32_t clock_freq = 400000000;
319     uint32_t tb_freq = 400000000;
320     int i;
321     char compatible_sb[] = "fsl,mpc8544-immr\0simple-bus";
322     char *soc;
323     char *mpic;
324     uint32_t mpic_ph;
325     uint32_t msi_ph;
326     char *gutil;
327     char *pci;
328     char *msi;
329     uint32_t *pci_map = NULL;
330     int len;
331     uint32_t pci_ranges[14] =
332         {
333             0x2000000, 0x0, pmc->pci_mmio_bus_base,
334             pmc->pci_mmio_base >> 32, pmc->pci_mmio_base,
335             0x0, 0x20000000,
336 
337             0x1000000, 0x0, 0x0,
338             pmc->pci_pio_base >> 32, pmc->pci_pio_base,
339             0x0, 0x10000,
340         };
341     QemuOpts *machine_opts = qemu_get_machine_opts();
342     const char *dtb_file = qemu_opt_get(machine_opts, "dtb");
343     const char *toplevel_compat = qemu_opt_get(machine_opts, "dt_compatible");
344 
345     if (dtb_file) {
346         char *filename;
347         filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, dtb_file);
348         if (!filename) {
349             goto out;
350         }
351 
352         fdt = load_device_tree(filename, &fdt_size);
353         g_free(filename);
354         if (!fdt) {
355             goto out;
356         }
357         goto done;
358     }
359 
360     fdt = create_device_tree(&fdt_size);
361     if (fdt == NULL) {
362         goto out;
363     }
364 
365     /* Manipulate device tree in memory. */
366     qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 2);
367     qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 2);
368 
369     qemu_fdt_add_subnode(fdt, "/memory");
370     qemu_fdt_setprop_string(fdt, "/memory", "device_type", "memory");
371     qemu_fdt_setprop(fdt, "/memory", "reg", mem_reg_property,
372                      sizeof(mem_reg_property));
373 
374     qemu_fdt_add_subnode(fdt, "/chosen");
375     if (initrd_size) {
376         ret = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start",
377                                     initrd_base);
378         if (ret < 0) {
379             fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
380         }
381 
382         ret = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end",
383                                     (initrd_base + initrd_size));
384         if (ret < 0) {
385             fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
386         }
387 
388     }
389 
390     if (kernel_base != -1ULL) {
391         qemu_fdt_setprop_cells(fdt, "/chosen", "qemu,boot-kernel",
392                                      kernel_base >> 32, kernel_base,
393                                      kernel_size >> 32, kernel_size);
394     }
395 
396     ret = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs",
397                                       machine->kernel_cmdline);
398     if (ret < 0)
399         fprintf(stderr, "couldn't set /chosen/bootargs\n");
400 
401     if (kvm_enabled()) {
402         /* Read out host's frequencies */
403         clock_freq = kvmppc_get_clockfreq();
404         tb_freq = kvmppc_get_tbfreq();
405 
406         /* indicate KVM hypercall interface */
407         qemu_fdt_add_subnode(fdt, "/hypervisor");
408         qemu_fdt_setprop_string(fdt, "/hypervisor", "compatible",
409                                 "linux,kvm");
410         kvmppc_get_hypercall(env, hypercall, sizeof(hypercall));
411         qemu_fdt_setprop(fdt, "/hypervisor", "hcall-instructions",
412                          hypercall, sizeof(hypercall));
413         /* if KVM supports the idle hcall, set property indicating this */
414         if (kvmppc_get_hasidle(env)) {
415             qemu_fdt_setprop(fdt, "/hypervisor", "has-idle", NULL, 0);
416         }
417     }
418 
419     /* Create CPU nodes */
420     qemu_fdt_add_subnode(fdt, "/cpus");
421     qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 1);
422     qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0);
423 
424     /* We need to generate the cpu nodes in reverse order, so Linux can pick
425        the first node as boot node and be happy */
426     for (i = smp_cpus - 1; i >= 0; i--) {
427         CPUState *cpu;
428         char *cpu_name;
429         uint64_t cpu_release_addr = pmc->spin_base + (i * 0x20);
430 
431         cpu = qemu_get_cpu(i);
432         if (cpu == NULL) {
433             continue;
434         }
435         env = cpu->env_ptr;
436 
437         cpu_name = g_strdup_printf("/cpus/PowerPC,8544@%x", i);
438         qemu_fdt_add_subnode(fdt, cpu_name);
439         qemu_fdt_setprop_cell(fdt, cpu_name, "clock-frequency", clock_freq);
440         qemu_fdt_setprop_cell(fdt, cpu_name, "timebase-frequency", tb_freq);
441         qemu_fdt_setprop_string(fdt, cpu_name, "device_type", "cpu");
442         qemu_fdt_setprop_cell(fdt, cpu_name, "reg", i);
443         qemu_fdt_setprop_cell(fdt, cpu_name, "d-cache-line-size",
444                               env->dcache_line_size);
445         qemu_fdt_setprop_cell(fdt, cpu_name, "i-cache-line-size",
446                               env->icache_line_size);
447         qemu_fdt_setprop_cell(fdt, cpu_name, "d-cache-size", 0x8000);
448         qemu_fdt_setprop_cell(fdt, cpu_name, "i-cache-size", 0x8000);
449         qemu_fdt_setprop_cell(fdt, cpu_name, "bus-frequency", 0);
450         if (cpu->cpu_index) {
451             qemu_fdt_setprop_string(fdt, cpu_name, "status", "disabled");
452             qemu_fdt_setprop_string(fdt, cpu_name, "enable-method",
453                                     "spin-table");
454             qemu_fdt_setprop_u64(fdt, cpu_name, "cpu-release-addr",
455                                  cpu_release_addr);
456         } else {
457             qemu_fdt_setprop_string(fdt, cpu_name, "status", "okay");
458         }
459         g_free(cpu_name);
460     }
461 
462     qemu_fdt_add_subnode(fdt, "/aliases");
463     /* XXX These should go into their respective devices' code */
464     soc = g_strdup_printf("/soc@%"PRIx64, pmc->ccsrbar_base);
465     qemu_fdt_add_subnode(fdt, soc);
466     qemu_fdt_setprop_string(fdt, soc, "device_type", "soc");
467     qemu_fdt_setprop(fdt, soc, "compatible", compatible_sb,
468                      sizeof(compatible_sb));
469     qemu_fdt_setprop_cell(fdt, soc, "#address-cells", 1);
470     qemu_fdt_setprop_cell(fdt, soc, "#size-cells", 1);
471     qemu_fdt_setprop_cells(fdt, soc, "ranges", 0x0,
472                            pmc->ccsrbar_base >> 32, pmc->ccsrbar_base,
473                            MPC8544_CCSRBAR_SIZE);
474     /* XXX should contain a reasonable value */
475     qemu_fdt_setprop_cell(fdt, soc, "bus-frequency", 0);
476 
477     mpic = g_strdup_printf("%s/pic@%llx", soc, MPC8544_MPIC_REGS_OFFSET);
478     qemu_fdt_add_subnode(fdt, mpic);
479     qemu_fdt_setprop_string(fdt, mpic, "device_type", "open-pic");
480     qemu_fdt_setprop_string(fdt, mpic, "compatible", "fsl,mpic");
481     qemu_fdt_setprop_cells(fdt, mpic, "reg", MPC8544_MPIC_REGS_OFFSET,
482                            0x40000);
483     qemu_fdt_setprop_cell(fdt, mpic, "#address-cells", 0);
484     qemu_fdt_setprop_cell(fdt, mpic, "#interrupt-cells", 2);
485     mpic_ph = qemu_fdt_alloc_phandle(fdt);
486     qemu_fdt_setprop_cell(fdt, mpic, "phandle", mpic_ph);
487     qemu_fdt_setprop_cell(fdt, mpic, "linux,phandle", mpic_ph);
488     qemu_fdt_setprop(fdt, mpic, "interrupt-controller", NULL, 0);
489 
490     /*
491      * We have to generate ser1 first, because Linux takes the first
492      * device it finds in the dt as serial output device. And we generate
493      * devices in reverse order to the dt.
494      */
495     if (serial_hd(1)) {
496         dt_serial_create(fdt, MPC8544_SERIAL1_REGS_OFFSET,
497                          soc, mpic, "serial1", 1, false);
498     }
499 
500     if (serial_hd(0)) {
501         dt_serial_create(fdt, MPC8544_SERIAL0_REGS_OFFSET,
502                          soc, mpic, "serial0", 0, true);
503     }
504 
505     /* i2c */
506     dt_i2c_create(fdt, soc, mpic, "i2c");
507 
508     dt_rtc_create(fdt, "i2c", "rtc");
509 
510 
511     gutil = g_strdup_printf("%s/global-utilities@%llx", soc,
512                             MPC8544_UTIL_OFFSET);
513     qemu_fdt_add_subnode(fdt, gutil);
514     qemu_fdt_setprop_string(fdt, gutil, "compatible", "fsl,mpc8544-guts");
515     qemu_fdt_setprop_cells(fdt, gutil, "reg", MPC8544_UTIL_OFFSET, 0x1000);
516     qemu_fdt_setprop(fdt, gutil, "fsl,has-rstcr", NULL, 0);
517     g_free(gutil);
518 
519     msi = g_strdup_printf("/%s/msi@%llx", soc, MPC8544_MSI_REGS_OFFSET);
520     qemu_fdt_add_subnode(fdt, msi);
521     qemu_fdt_setprop_string(fdt, msi, "compatible", "fsl,mpic-msi");
522     qemu_fdt_setprop_cells(fdt, msi, "reg", MPC8544_MSI_REGS_OFFSET, 0x200);
523     msi_ph = qemu_fdt_alloc_phandle(fdt);
524     qemu_fdt_setprop_cells(fdt, msi, "msi-available-ranges", 0x0, 0x100);
525     qemu_fdt_setprop_phandle(fdt, msi, "interrupt-parent", mpic);
526     qemu_fdt_setprop_cells(fdt, msi, "interrupts",
527         0xe0, 0x0,
528         0xe1, 0x0,
529         0xe2, 0x0,
530         0xe3, 0x0,
531         0xe4, 0x0,
532         0xe5, 0x0,
533         0xe6, 0x0,
534         0xe7, 0x0);
535     qemu_fdt_setprop_cell(fdt, msi, "phandle", msi_ph);
536     qemu_fdt_setprop_cell(fdt, msi, "linux,phandle", msi_ph);
537     g_free(msi);
538 
539     pci = g_strdup_printf("/pci@%llx",
540                           pmc->ccsrbar_base + MPC8544_PCI_REGS_OFFSET);
541     qemu_fdt_add_subnode(fdt, pci);
542     qemu_fdt_setprop_cell(fdt, pci, "cell-index", 0);
543     qemu_fdt_setprop_string(fdt, pci, "compatible", "fsl,mpc8540-pci");
544     qemu_fdt_setprop_string(fdt, pci, "device_type", "pci");
545     qemu_fdt_setprop_cells(fdt, pci, "interrupt-map-mask", 0xf800, 0x0,
546                            0x0, 0x7);
547     pci_map = pci_map_create(fdt, qemu_fdt_get_phandle(fdt, mpic),
548                              pmc->pci_first_slot, pmc->pci_nr_slots,
549                              &len);
550     qemu_fdt_setprop(fdt, pci, "interrupt-map", pci_map, len);
551     qemu_fdt_setprop_phandle(fdt, pci, "interrupt-parent", mpic);
552     qemu_fdt_setprop_cells(fdt, pci, "interrupts", 24, 2);
553     qemu_fdt_setprop_cells(fdt, pci, "bus-range", 0, 255);
554     for (i = 0; i < 14; i++) {
555         pci_ranges[i] = cpu_to_be32(pci_ranges[i]);
556     }
557     qemu_fdt_setprop_cell(fdt, pci, "fsl,msi", msi_ph);
558     qemu_fdt_setprop(fdt, pci, "ranges", pci_ranges, sizeof(pci_ranges));
559     qemu_fdt_setprop_cells(fdt, pci, "reg",
560                            (pmc->ccsrbar_base + MPC8544_PCI_REGS_OFFSET) >> 32,
561                            (pmc->ccsrbar_base + MPC8544_PCI_REGS_OFFSET),
562                            0, 0x1000);
563     qemu_fdt_setprop_cell(fdt, pci, "clock-frequency", 66666666);
564     qemu_fdt_setprop_cell(fdt, pci, "#interrupt-cells", 1);
565     qemu_fdt_setprop_cell(fdt, pci, "#size-cells", 2);
566     qemu_fdt_setprop_cell(fdt, pci, "#address-cells", 3);
567     qemu_fdt_setprop_string(fdt, "/aliases", "pci0", pci);
568     g_free(pci);
569 
570     if (pmc->has_mpc8xxx_gpio) {
571         create_dt_mpc8xxx_gpio(fdt, soc, mpic);
572     }
573     g_free(soc);
574 
575     if (pms->pbus_dev) {
576         platform_bus_create_devtree(pms, fdt, mpic);
577     }
578     g_free(mpic);
579 
580     pmc->fixup_devtree(fdt);
581 
582     if (toplevel_compat) {
583         qemu_fdt_setprop(fdt, "/", "compatible", toplevel_compat,
584                          strlen(toplevel_compat) + 1);
585     }
586 
587 done:
588     if (!dry_run) {
589         qemu_fdt_dumpdtb(fdt, fdt_size);
590         cpu_physical_memory_write(addr, fdt, fdt_size);
591     }
592     ret = fdt_size;
593 
594 out:
595     g_free(pci_map);
596 
597     return ret;
598 }
599 
600 typedef struct DeviceTreeParams {
601     PPCE500MachineState *machine;
602     hwaddr addr;
603     hwaddr initrd_base;
604     hwaddr initrd_size;
605     hwaddr kernel_base;
606     hwaddr kernel_size;
607     Notifier notifier;
608 } DeviceTreeParams;
609 
610 static void ppce500_reset_device_tree(void *opaque)
611 {
612     DeviceTreeParams *p = opaque;
613     ppce500_load_device_tree(p->machine, p->addr, p->initrd_base,
614                              p->initrd_size, p->kernel_base, p->kernel_size,
615                              false);
616 }
617 
618 static void ppce500_init_notify(Notifier *notifier, void *data)
619 {
620     DeviceTreeParams *p = container_of(notifier, DeviceTreeParams, notifier);
621     ppce500_reset_device_tree(p);
622 }
623 
624 static int ppce500_prep_device_tree(PPCE500MachineState *machine,
625                                     hwaddr addr,
626                                     hwaddr initrd_base,
627                                     hwaddr initrd_size,
628                                     hwaddr kernel_base,
629                                     hwaddr kernel_size)
630 {
631     DeviceTreeParams *p = g_new(DeviceTreeParams, 1);
632     p->machine = machine;
633     p->addr = addr;
634     p->initrd_base = initrd_base;
635     p->initrd_size = initrd_size;
636     p->kernel_base = kernel_base;
637     p->kernel_size = kernel_size;
638 
639     qemu_register_reset(ppce500_reset_device_tree, p);
640     p->notifier.notify = ppce500_init_notify;
641     qemu_add_machine_init_done_notifier(&p->notifier);
642 
643     /* Issue the device tree loader once, so that we get the size of the blob */
644     return ppce500_load_device_tree(machine, addr, initrd_base, initrd_size,
645                                     kernel_base, kernel_size, true);
646 }
647 
648 /* Create -kernel TLB entries for BookE.  */
649 hwaddr booke206_page_size_to_tlb(uint64_t size)
650 {
651     return 63 - clz64(size / KiB);
652 }
653 
654 static int booke206_initial_map_tsize(CPUPPCState *env)
655 {
656     struct boot_info *bi = env->load_info;
657     hwaddr dt_end;
658     int ps;
659 
660     /* Our initial TLB entry needs to cover everything from 0 to
661        the device tree top */
662     dt_end = bi->dt_base + bi->dt_size;
663     ps = booke206_page_size_to_tlb(dt_end) + 1;
664     if (ps & 1) {
665         /* e500v2 can only do even TLB size bits */
666         ps++;
667     }
668     return ps;
669 }
670 
671 static uint64_t mmubooke_initial_mapsize(CPUPPCState *env)
672 {
673     int tsize;
674 
675     tsize = booke206_initial_map_tsize(env);
676     return (1ULL << 10 << tsize);
677 }
678 
679 static void mmubooke_create_initial_mapping(CPUPPCState *env)
680 {
681     ppcmas_tlb_t *tlb = booke206_get_tlbm(env, 1, 0, 0);
682     hwaddr size;
683     int ps;
684 
685     ps = booke206_initial_map_tsize(env);
686     size = (ps << MAS1_TSIZE_SHIFT);
687     tlb->mas1 = MAS1_VALID | size;
688     tlb->mas2 = 0;
689     tlb->mas7_3 = 0;
690     tlb->mas7_3 |= MAS3_UR | MAS3_UW | MAS3_UX | MAS3_SR | MAS3_SW | MAS3_SX;
691 
692     env->tlb_dirty = true;
693 }
694 
695 static void ppce500_cpu_reset_sec(void *opaque)
696 {
697     PowerPCCPU *cpu = opaque;
698     CPUState *cs = CPU(cpu);
699 
700     cpu_reset(cs);
701 
702     /* Secondary CPU starts in halted state for now. Needs to change when
703        implementing non-kernel boot. */
704     cs->halted = 1;
705     cs->exception_index = EXCP_HLT;
706 }
707 
708 static void ppce500_cpu_reset(void *opaque)
709 {
710     PowerPCCPU *cpu = opaque;
711     CPUState *cs = CPU(cpu);
712     CPUPPCState *env = &cpu->env;
713     struct boot_info *bi = env->load_info;
714 
715     cpu_reset(cs);
716 
717     /* Set initial guest state. */
718     cs->halted = 0;
719     env->gpr[1] = (16 * MiB) - 8;
720     env->gpr[3] = bi->dt_base;
721     env->gpr[4] = 0;
722     env->gpr[5] = 0;
723     env->gpr[6] = EPAPR_MAGIC;
724     env->gpr[7] = mmubooke_initial_mapsize(env);
725     env->gpr[8] = 0;
726     env->gpr[9] = 0;
727     env->nip = bi->entry;
728     mmubooke_create_initial_mapping(env);
729 }
730 
731 static DeviceState *ppce500_init_mpic_qemu(PPCE500MachineState *pms,
732                                            IrqLines  *irqs)
733 {
734     DeviceState *dev;
735     SysBusDevice *s;
736     int i, j, k;
737     MachineState *machine = MACHINE(pms);
738     const PPCE500MachineClass *pmc = PPCE500_MACHINE_GET_CLASS(pms);
739 
740     dev = qdev_create(NULL, TYPE_OPENPIC);
741     object_property_add_child(OBJECT(machine), "pic", OBJECT(dev),
742                               &error_fatal);
743     qdev_prop_set_uint32(dev, "model", pmc->mpic_version);
744     qdev_prop_set_uint32(dev, "nb_cpus", smp_cpus);
745 
746     qdev_init_nofail(dev);
747     s = SYS_BUS_DEVICE(dev);
748 
749     k = 0;
750     for (i = 0; i < smp_cpus; i++) {
751         for (j = 0; j < OPENPIC_OUTPUT_NB; j++) {
752             sysbus_connect_irq(s, k++, irqs[i].irq[j]);
753         }
754     }
755 
756     return dev;
757 }
758 
759 static DeviceState *ppce500_init_mpic_kvm(const PPCE500MachineClass *pmc,
760                                           IrqLines *irqs, Error **errp)
761 {
762     Error *err = NULL;
763     DeviceState *dev;
764     CPUState *cs;
765 
766     dev = qdev_create(NULL, TYPE_KVM_OPENPIC);
767     qdev_prop_set_uint32(dev, "model", pmc->mpic_version);
768 
769     object_property_set_bool(OBJECT(dev), true, "realized", &err);
770     if (err) {
771         error_propagate(errp, err);
772         object_unparent(OBJECT(dev));
773         return NULL;
774     }
775 
776     CPU_FOREACH(cs) {
777         if (kvm_openpic_connect_vcpu(dev, cs)) {
778             fprintf(stderr, "%s: failed to connect vcpu to irqchip\n",
779                     __func__);
780             abort();
781         }
782     }
783 
784     return dev;
785 }
786 
787 static DeviceState *ppce500_init_mpic(PPCE500MachineState *pms,
788                                       MemoryRegion *ccsr,
789                                       IrqLines *irqs)
790 {
791     MachineState *machine = MACHINE(pms);
792     const PPCE500MachineClass *pmc = PPCE500_MACHINE_GET_CLASS(pms);
793     DeviceState *dev = NULL;
794     SysBusDevice *s;
795 
796     if (kvm_enabled()) {
797         Error *err = NULL;
798 
799         if (machine_kernel_irqchip_allowed(machine)) {
800             dev = ppce500_init_mpic_kvm(pmc, irqs, &err);
801         }
802         if (machine_kernel_irqchip_required(machine) && !dev) {
803             error_reportf_err(err,
804                               "kernel_irqchip requested but unavailable: ");
805             exit(1);
806         }
807     }
808 
809     if (!dev) {
810         dev = ppce500_init_mpic_qemu(pms, irqs);
811     }
812 
813     s = SYS_BUS_DEVICE(dev);
814     memory_region_add_subregion(ccsr, MPC8544_MPIC_REGS_OFFSET,
815                                 s->mmio[0].memory);
816 
817     return dev;
818 }
819 
820 static void ppce500_power_off(void *opaque, int line, int on)
821 {
822     if (on) {
823         qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
824     }
825 }
826 
827 void ppce500_init(MachineState *machine)
828 {
829     MemoryRegion *address_space_mem = get_system_memory();
830     MemoryRegion *ram = g_new(MemoryRegion, 1);
831     PPCE500MachineState *pms = PPCE500_MACHINE(machine);
832     const PPCE500MachineClass *pmc = PPCE500_MACHINE_GET_CLASS(machine);
833     PCIBus *pci_bus;
834     CPUPPCState *env = NULL;
835     uint64_t loadaddr;
836     hwaddr kernel_base = -1LL;
837     int kernel_size = 0;
838     hwaddr dt_base = 0;
839     hwaddr initrd_base = 0;
840     int initrd_size = 0;
841     hwaddr cur_base = 0;
842     char *filename;
843     const char *payload_name;
844     bool kernel_as_payload;
845     hwaddr bios_entry = 0;
846     target_long payload_size;
847     struct boot_info *boot_info;
848     int dt_size;
849     int i;
850     /* irq num for pin INTA, INTB, INTC and INTD is 1, 2, 3 and
851      * 4 respectively */
852     unsigned int pci_irq_nrs[PCI_NUM_PINS] = {1, 2, 3, 4};
853     IrqLines *irqs;
854     DeviceState *dev, *mpicdev;
855     CPUPPCState *firstenv = NULL;
856     MemoryRegion *ccsr_addr_space;
857     SysBusDevice *s;
858     PPCE500CCSRState *ccsr;
859     I2CBus *i2c;
860 
861     irqs = g_new0(IrqLines, smp_cpus);
862     for (i = 0; i < smp_cpus; i++) {
863         PowerPCCPU *cpu;
864         CPUState *cs;
865         qemu_irq *input;
866 
867         cpu = POWERPC_CPU(cpu_create(machine->cpu_type));
868         env = &cpu->env;
869         cs = CPU(cpu);
870 
871         if (env->mmu_model != POWERPC_MMU_BOOKE206) {
872             error_report("MMU model %i not supported by this machine",
873                          env->mmu_model);
874             exit(1);
875         }
876 
877         if (!firstenv) {
878             firstenv = env;
879         }
880 
881         input = (qemu_irq *)env->irq_inputs;
882         irqs[i].irq[OPENPIC_OUTPUT_INT] = input[PPCE500_INPUT_INT];
883         irqs[i].irq[OPENPIC_OUTPUT_CINT] = input[PPCE500_INPUT_CINT];
884         env->spr_cb[SPR_BOOKE_PIR].default_value = cs->cpu_index = i;
885         env->mpic_iack = pmc->ccsrbar_base + MPC8544_MPIC_REGS_OFFSET + 0xa0;
886 
887         ppc_booke_timers_init(cpu, 400000000, PPC_TIMER_E500);
888 
889         /* Register reset handler */
890         if (!i) {
891             /* Primary CPU */
892             struct boot_info *boot_info;
893             boot_info = g_malloc0(sizeof(struct boot_info));
894             qemu_register_reset(ppce500_cpu_reset, cpu);
895             env->load_info = boot_info;
896         } else {
897             /* Secondary CPUs */
898             qemu_register_reset(ppce500_cpu_reset_sec, cpu);
899         }
900     }
901 
902     env = firstenv;
903 
904     /* Fixup Memory size on a alignment boundary */
905     ram_size &= ~(RAM_SIZES_ALIGN - 1);
906     machine->ram_size = ram_size;
907 
908     /* Register Memory */
909     memory_region_allocate_system_memory(ram, NULL, "mpc8544ds.ram", ram_size);
910     memory_region_add_subregion(address_space_mem, 0, ram);
911 
912     dev = qdev_create(NULL, "e500-ccsr");
913     object_property_add_child(qdev_get_machine(), "e500-ccsr",
914                               OBJECT(dev), NULL);
915     qdev_init_nofail(dev);
916     ccsr = CCSR(dev);
917     ccsr_addr_space = &ccsr->ccsr_space;
918     memory_region_add_subregion(address_space_mem, pmc->ccsrbar_base,
919                                 ccsr_addr_space);
920 
921     mpicdev = ppce500_init_mpic(pms, ccsr_addr_space, irqs);
922 
923     /* Serial */
924     if (serial_hd(0)) {
925         serial_mm_init(ccsr_addr_space, MPC8544_SERIAL0_REGS_OFFSET,
926                        0, qdev_get_gpio_in(mpicdev, 42), 399193,
927                        serial_hd(0), DEVICE_BIG_ENDIAN);
928     }
929 
930     if (serial_hd(1)) {
931         serial_mm_init(ccsr_addr_space, MPC8544_SERIAL1_REGS_OFFSET,
932                        0, qdev_get_gpio_in(mpicdev, 42), 399193,
933                        serial_hd(1), DEVICE_BIG_ENDIAN);
934     }
935         /* I2C */
936     dev = qdev_create(NULL, "mpc-i2c");
937     s = SYS_BUS_DEVICE(dev);
938     qdev_init_nofail(dev);
939     sysbus_connect_irq(s, 0, qdev_get_gpio_in(mpicdev, MPC8544_I2C_IRQ));
940     memory_region_add_subregion(ccsr_addr_space, MPC8544_I2C_REGS_OFFSET,
941                                 sysbus_mmio_get_region(s, 0));
942     i2c = (I2CBus *)qdev_get_child_bus(dev, "i2c");
943     i2c_create_slave(i2c, "ds1338", RTC_REGS_OFFSET);
944 
945 
946     /* General Utility device */
947     dev = qdev_create(NULL, "mpc8544-guts");
948     qdev_init_nofail(dev);
949     s = SYS_BUS_DEVICE(dev);
950     memory_region_add_subregion(ccsr_addr_space, MPC8544_UTIL_OFFSET,
951                                 sysbus_mmio_get_region(s, 0));
952 
953     /* PCI */
954     dev = qdev_create(NULL, "e500-pcihost");
955     object_property_add_child(qdev_get_machine(), "pci-host", OBJECT(dev),
956                               &error_abort);
957     qdev_prop_set_uint32(dev, "first_slot", pmc->pci_first_slot);
958     qdev_prop_set_uint32(dev, "first_pin_irq", pci_irq_nrs[0]);
959     qdev_init_nofail(dev);
960     s = SYS_BUS_DEVICE(dev);
961     for (i = 0; i < PCI_NUM_PINS; i++) {
962         sysbus_connect_irq(s, i, qdev_get_gpio_in(mpicdev, pci_irq_nrs[i]));
963     }
964 
965     memory_region_add_subregion(ccsr_addr_space, MPC8544_PCI_REGS_OFFSET,
966                                 sysbus_mmio_get_region(s, 0));
967 
968     pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci.0");
969     if (!pci_bus)
970         printf("couldn't create PCI controller!\n");
971 
972     if (pci_bus) {
973         /* Register network interfaces. */
974         for (i = 0; i < nb_nics; i++) {
975             pci_nic_init_nofail(&nd_table[i], pci_bus, "virtio-net-pci", NULL);
976         }
977     }
978 
979     /* Register spinning region */
980     sysbus_create_simple("e500-spin", pmc->spin_base, NULL);
981 
982     if (pmc->has_mpc8xxx_gpio) {
983         qemu_irq poweroff_irq;
984 
985         dev = qdev_create(NULL, "mpc8xxx_gpio");
986         s = SYS_BUS_DEVICE(dev);
987         qdev_init_nofail(dev);
988         sysbus_connect_irq(s, 0, qdev_get_gpio_in(mpicdev, MPC8XXX_GPIO_IRQ));
989         memory_region_add_subregion(ccsr_addr_space, MPC8XXX_GPIO_OFFSET,
990                                     sysbus_mmio_get_region(s, 0));
991 
992         /* Power Off GPIO at Pin 0 */
993         poweroff_irq = qemu_allocate_irq(ppce500_power_off, NULL, 0);
994         qdev_connect_gpio_out(dev, 0, poweroff_irq);
995     }
996 
997     /* Platform Bus Device */
998     if (pmc->has_platform_bus) {
999         dev = qdev_create(NULL, TYPE_PLATFORM_BUS_DEVICE);
1000         dev->id = TYPE_PLATFORM_BUS_DEVICE;
1001         qdev_prop_set_uint32(dev, "num_irqs", pmc->platform_bus_num_irqs);
1002         qdev_prop_set_uint32(dev, "mmio_size", pmc->platform_bus_size);
1003         qdev_init_nofail(dev);
1004         pms->pbus_dev = PLATFORM_BUS_DEVICE(dev);
1005 
1006         s = SYS_BUS_DEVICE(pms->pbus_dev);
1007         for (i = 0; i < pmc->platform_bus_num_irqs; i++) {
1008             int irqn = pmc->platform_bus_first_irq + i;
1009             sysbus_connect_irq(s, i, qdev_get_gpio_in(mpicdev, irqn));
1010         }
1011 
1012         memory_region_add_subregion(address_space_mem,
1013                                     pmc->platform_bus_base,
1014                                     sysbus_mmio_get_region(s, 0));
1015     }
1016 
1017     /*
1018      * Smart firmware defaults ahead!
1019      *
1020      * We follow the following table to select which payload we execute.
1021      *
1022      *  -kernel | -bios | payload
1023      * ---------+-------+---------
1024      *     N    |   Y   | u-boot
1025      *     N    |   N   | u-boot
1026      *     Y    |   Y   | u-boot
1027      *     Y    |   N   | kernel
1028      *
1029      * This ensures backwards compatibility with how we used to expose
1030      * -kernel to users but allows them to run through u-boot as well.
1031      */
1032     kernel_as_payload = false;
1033     if (bios_name == NULL) {
1034         if (machine->kernel_filename) {
1035             payload_name = machine->kernel_filename;
1036             kernel_as_payload = true;
1037         } else {
1038             payload_name = "u-boot.e500";
1039         }
1040     } else {
1041         payload_name = bios_name;
1042     }
1043 
1044     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, payload_name);
1045 
1046     payload_size = load_elf(filename, NULL, NULL, NULL,
1047                             &bios_entry, &loadaddr, NULL,
1048                             1, PPC_ELF_MACHINE, 0, 0);
1049     if (payload_size < 0) {
1050         /*
1051          * Hrm. No ELF image? Try a uImage, maybe someone is giving us an
1052          * ePAPR compliant kernel
1053          */
1054         loadaddr = LOAD_UIMAGE_LOADADDR_INVALID;
1055         payload_size = load_uimage(filename, &bios_entry, &loadaddr, NULL,
1056                                    NULL, NULL);
1057         if (payload_size < 0) {
1058             error_report("could not load firmware '%s'", filename);
1059             exit(1);
1060         }
1061     }
1062 
1063     g_free(filename);
1064 
1065     if (kernel_as_payload) {
1066         kernel_base = loadaddr;
1067         kernel_size = payload_size;
1068     }
1069 
1070     cur_base = loadaddr + payload_size;
1071     if (cur_base < 32 * MiB) {
1072         /* u-boot occupies memory up to 32MB, so load blobs above */
1073         cur_base = 32 * MiB;
1074     }
1075 
1076     /* Load bare kernel only if no bios/u-boot has been provided */
1077     if (machine->kernel_filename && !kernel_as_payload) {
1078         kernel_base = cur_base;
1079         kernel_size = load_image_targphys(machine->kernel_filename,
1080                                           cur_base,
1081                                           ram_size - cur_base);
1082         if (kernel_size < 0) {
1083             error_report("could not load kernel '%s'",
1084                          machine->kernel_filename);
1085             exit(1);
1086         }
1087 
1088         cur_base += kernel_size;
1089     }
1090 
1091     /* Load initrd. */
1092     if (machine->initrd_filename) {
1093         initrd_base = (cur_base + INITRD_LOAD_PAD) & ~INITRD_PAD_MASK;
1094         initrd_size = load_image_targphys(machine->initrd_filename, initrd_base,
1095                                           ram_size - initrd_base);
1096 
1097         if (initrd_size < 0) {
1098             error_report("could not load initial ram disk '%s'",
1099                          machine->initrd_filename);
1100             exit(1);
1101         }
1102 
1103         cur_base = initrd_base + initrd_size;
1104     }
1105 
1106     /*
1107      * Reserve space for dtb behind the kernel image because Linux has a bug
1108      * where it can only handle the dtb if it's within the first 64MB of where
1109      * <kernel> starts. dtb cannot not reach initrd_base because INITRD_LOAD_PAD
1110      * ensures enough space between kernel and initrd.
1111      */
1112     dt_base = (loadaddr + payload_size + DTC_LOAD_PAD) & ~DTC_PAD_MASK;
1113     if (dt_base + DTB_MAX_SIZE > ram_size) {
1114             error_report("not enough memory for device tree");
1115             exit(1);
1116     }
1117 
1118     dt_size = ppce500_prep_device_tree(pms, dt_base,
1119                                        initrd_base, initrd_size,
1120                                        kernel_base, kernel_size);
1121     if (dt_size < 0) {
1122         error_report("couldn't load device tree");
1123         exit(1);
1124     }
1125     assert(dt_size < DTB_MAX_SIZE);
1126 
1127     boot_info = env->load_info;
1128     boot_info->entry = bios_entry;
1129     boot_info->dt_base = dt_base;
1130     boot_info->dt_size = dt_size;
1131 }
1132 
1133 static void e500_ccsr_initfn(Object *obj)
1134 {
1135     PPCE500CCSRState *ccsr = CCSR(obj);
1136     memory_region_init(&ccsr->ccsr_space, obj, "e500-ccsr",
1137                        MPC8544_CCSRBAR_SIZE);
1138 }
1139 
1140 static const TypeInfo e500_ccsr_info = {
1141     .name          = TYPE_CCSR,
1142     .parent        = TYPE_SYS_BUS_DEVICE,
1143     .instance_size = sizeof(PPCE500CCSRState),
1144     .instance_init = e500_ccsr_initfn,
1145 };
1146 
1147 static const TypeInfo ppce500_info = {
1148     .name          = TYPE_PPCE500_MACHINE,
1149     .parent        = TYPE_MACHINE,
1150     .abstract      = true,
1151     .instance_size = sizeof(PPCE500MachineState),
1152     .class_size    = sizeof(PPCE500MachineClass),
1153 };
1154 
1155 static void e500_register_types(void)
1156 {
1157     type_register_static(&e500_ccsr_info);
1158     type_register_static(&ppce500_info);
1159 }
1160 
1161 type_init(e500_register_types)
1162