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.
14 #include "qemu/osdep.h"
15 #include "qemu/units.h"
16 #include "qemu/datadir.h"
17 #include "qemu/error-report.h"
19 #include "hw/pci/pci.h"
20 #include "hw/boards.h"
21 #include "sysemu/kvm.h"
22 #include "sysemu/device_tree.h"
23 #include "hw/loader.h"
25 #include "hw/char/serial.h"
26 #include "hw/ppc/ppc.h"
27 #include "hw/pci-host/ppc4xx.h"
28 #include "sysemu/sysemu.h"
29 #include "sysemu/reset.h"
30 #include "hw/sysbus.h"
31 #include "hw/intc/ppc-uic.h"
32 #include "hw/qdev-properties.h"
33 #include "qapi/error.h"
37 #define BINARY_DEVICE_TREE_FILE "bamboo.dtb"
40 #define KERNEL_ADDR 0x1000000
41 #define FDT_ADDR 0x1800000
42 #define RAMDISK_ADDR 0x1900000
44 #define PPC440EP_PCI_CONFIG 0xeec00000
45 #define PPC440EP_PCI_INTACK 0xeed00000
46 #define PPC440EP_PCI_SPECIAL 0xeed00000
47 #define PPC440EP_PCI_REGS 0xef400000
48 #define PPC440EP_PCI_IO 0xe8000000
49 #define PPC440EP_PCI_IOLEN 0x00010000
53 static int bamboo_load_device_tree(MachineState
*machine
,
59 uint32_t mem_reg_property
[] = { 0, 0, cpu_to_be32(machine
->ram_size
) };
63 uint32_t tb_freq
= 400000000;
64 uint32_t clock_freq
= 400000000;
66 filename
= qemu_find_file(QEMU_FILE_TYPE_BIOS
, BINARY_DEVICE_TREE_FILE
);
70 fdt
= load_device_tree(filename
, &fdt_size
);
76 /* Manipulate device tree in memory. */
78 ret
= qemu_fdt_setprop(fdt
, "/memory", "reg", mem_reg_property
,
79 sizeof(mem_reg_property
));
81 fprintf(stderr
, "couldn't set /memory/reg\n");
83 ret
= qemu_fdt_setprop_cell(fdt
, "/chosen", "linux,initrd-start",
86 fprintf(stderr
, "couldn't set /chosen/linux,initrd-start\n");
88 ret
= qemu_fdt_setprop_cell(fdt
, "/chosen", "linux,initrd-end",
89 (initrd_base
+ initrd_size
));
91 fprintf(stderr
, "couldn't set /chosen/linux,initrd-end\n");
93 ret
= qemu_fdt_setprop_string(fdt
, "/chosen", "bootargs",
94 machine
->kernel_cmdline
);
96 fprintf(stderr
, "couldn't set /chosen/bootargs\n");
99 qemu_fdt_setprop_cell(fdt
, "/cpus/cpu@0", "clock-frequency",
101 qemu_fdt_setprop_cell(fdt
, "/cpus/cpu@0", "timebase-frequency",
104 rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE
, fdt
, fdt_size
, addr
);
106 /* Set ms->fdt for 'dumpdtb' QMP/HMP command */
112 /* Create reset TLB entries for BookE, spanning the 32bit addr space. */
113 static void mmubooke_create_initial_mapping(CPUPPCState
*env
,
117 ppcemb_tlb_t
*tlb
= &env
->tlb
.tlbe
[0];
120 tlb
->prot
= PAGE_VALID
| ((PAGE_READ
| PAGE_WRITE
| PAGE_EXEC
) << 4);
121 tlb
->size
= 1U << 31; /* up to 0x80000000 */
122 tlb
->EPN
= va
& TARGET_PAGE_MASK
;
123 tlb
->RPN
= pa
& TARGET_PAGE_MASK
;
126 tlb
= &env
->tlb
.tlbe
[1];
128 tlb
->prot
= PAGE_VALID
| ((PAGE_READ
| PAGE_WRITE
| PAGE_EXEC
) << 4);
129 tlb
->size
= 1U << 31; /* up to 0xffffffff */
130 tlb
->EPN
= 0x80000000 & TARGET_PAGE_MASK
;
131 tlb
->RPN
= 0x80000000 & TARGET_PAGE_MASK
;
135 static void main_cpu_reset(void *opaque
)
137 PowerPCCPU
*cpu
= opaque
;
138 CPUPPCState
*env
= &cpu
->env
;
141 env
->gpr
[1] = (16 * MiB
) - 8;
142 env
->gpr
[3] = FDT_ADDR
;
145 /* Create a mapping for the kernel. */
146 mmubooke_create_initial_mapping(env
, 0, 0);
149 static void bamboo_init(MachineState
*machine
)
151 const char *kernel_filename
= machine
->kernel_filename
;
152 const char *initrd_filename
= machine
->initrd_filename
;
153 MachineClass
*mc
= MACHINE_GET_CLASS(machine
);
154 unsigned int pci_irq_nrs
[4] = { 28, 27, 26, 25 };
155 MemoryRegion
*address_space_mem
= get_system_memory();
156 MemoryRegion
*isa
= g_new(MemoryRegion
, 1);
160 target_long initrd_size
= 0;
163 SysBusDevice
*uicsbd
;
167 error_report("machine %s does not support the KVM accelerator",
168 MACHINE_GET_CLASS(machine
)->name
);
172 cpu
= POWERPC_CPU(cpu_create(machine
->cpu_type
));
175 if (env
->mmu_model
!= POWERPC_MMU_BOOKE
) {
176 error_report("MMU model %i not supported by this machine",
181 qemu_register_reset(main_cpu_reset
, cpu
);
182 ppc_booke_timers_init(cpu
, 400000000, 0);
183 ppc_dcr_init(env
, NULL
, NULL
);
185 /* interrupt controller */
186 uicdev
= qdev_new(TYPE_PPC_UIC
);
187 ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(uicdev
), cpu
, &error_fatal
);
188 object_unref(OBJECT(uicdev
));
189 uicsbd
= SYS_BUS_DEVICE(uicdev
);
190 sysbus_connect_irq(uicsbd
, PPCUIC_OUTPUT_INT
,
191 qdev_get_gpio_in(DEVICE(cpu
), PPC40x_INPUT_INT
));
192 sysbus_connect_irq(uicsbd
, PPCUIC_OUTPUT_CINT
,
193 qdev_get_gpio_in(DEVICE(cpu
), PPC40x_INPUT_CINT
));
195 /* SDRAM controller */
196 dev
= qdev_new(TYPE_PPC4xx_SDRAM_DDR
);
197 object_property_set_link(OBJECT(dev
), "dram", OBJECT(machine
->ram
),
199 ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(dev
), cpu
, &error_fatal
);
200 object_unref(OBJECT(dev
));
201 /* XXX 440EP's ECC interrupts are on UIC1, but we've only created UIC0. */
202 sysbus_connect_irq(SYS_BUS_DEVICE(dev
), 0, qdev_get_gpio_in(uicdev
, 14));
203 /* Enable SDRAM memory regions, this should be done by the firmware */
204 ppc4xx_sdram_ddr_enable(PPC4xx_SDRAM_DDR(dev
));
207 dev
= sysbus_create_varargs(TYPE_PPC4xx_PCI_HOST
, PPC440EP_PCI_CONFIG
,
208 qdev_get_gpio_in(uicdev
, pci_irq_nrs
[0]),
209 qdev_get_gpio_in(uicdev
, pci_irq_nrs
[1]),
210 qdev_get_gpio_in(uicdev
, pci_irq_nrs
[2]),
211 qdev_get_gpio_in(uicdev
, pci_irq_nrs
[3]),
213 pcibus
= (PCIBus
*)qdev_get_child_bus(dev
, "pci.0");
215 error_report("couldn't create PCI controller");
219 memory_region_init_alias(isa
, NULL
, "isa_mmio",
220 get_system_io(), 0, PPC440EP_PCI_IOLEN
);
221 memory_region_add_subregion(get_system_memory(), PPC440EP_PCI_IO
, isa
);
223 if (serial_hd(0) != NULL
) {
224 serial_mm_init(address_space_mem
, 0xef600300, 0,
225 qdev_get_gpio_in(uicdev
, 0),
226 PPC_SERIAL_MM_BAUDBASE
, serial_hd(0),
229 if (serial_hd(1) != NULL
) {
230 serial_mm_init(address_space_mem
, 0xef600400, 0,
231 qdev_get_gpio_in(uicdev
, 1),
232 PPC_SERIAL_MM_BAUDBASE
, serial_hd(1),
238 * There are no PCI NICs on the Bamboo board, but there are
239 * PCI slots, so we can pick whatever default model we want.
241 pci_init_nic_devices(pcibus
, mc
->default_nic
);
245 if (kernel_filename
) {
246 hwaddr loadaddr
= LOAD_UIMAGE_LOADADDR_INVALID
;
247 success
= load_uimage(kernel_filename
, &entry
, &loadaddr
, NULL
,
251 success
= load_elf(kernel_filename
, NULL
, NULL
, NULL
, &elf_entry
,
252 NULL
, NULL
, NULL
, 1, PPC_ELF_MACHINE
, 0, 0);
255 /* XXX try again as binary */
257 error_report("could not load kernel '%s'", kernel_filename
);
263 if (initrd_filename
) {
264 initrd_size
= load_image_targphys(initrd_filename
, RAMDISK_ADDR
,
265 machine
->ram_size
- RAMDISK_ADDR
);
267 if (initrd_size
< 0) {
268 error_report("could not load ram disk '%s' at %x",
269 initrd_filename
, RAMDISK_ADDR
);
274 /* If we're loading a kernel directly, we must load the device tree too. */
275 if (kernel_filename
) {
276 if (bamboo_load_device_tree(machine
, FDT_ADDR
,
277 RAMDISK_ADDR
, initrd_size
) < 0) {
278 error_report("couldn't load device tree");
284 static void bamboo_machine_init(MachineClass
*mc
)
287 mc
->init
= bamboo_init
;
288 mc
->default_cpu_type
= POWERPC_CPU_TYPE_NAME("440epb");
289 mc
->default_ram_id
= "ppc4xx.sdram";
290 mc
->default_nic
= "e1000";
293 DEFINE_MACHINE("bamboo", bamboo_machine_init
)