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/error-report.h"
17 #include "qemu-common.h"
18 #include "qemu/datadir.h"
19 #include "qemu/error-report.h"
21 #include "hw/pci/pci.h"
22 #include "hw/boards.h"
23 #include "sysemu/kvm.h"
25 #include "sysemu/device_tree.h"
26 #include "hw/loader.h"
28 #include "exec/address-spaces.h"
29 #include "hw/char/serial.h"
30 #include "hw/ppc/ppc.h"
32 #include "sysemu/sysemu.h"
33 #include "sysemu/qtest.h"
34 #include "sysemu/reset.h"
35 #include "hw/sysbus.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
51 #define PPC440EP_SDRAM_NR_BANKS 4
53 static const ram_addr_t ppc440ep_sdram_bank_sizes
[] = {
54 256 * MiB
, 128 * MiB
, 64 * MiB
, 32 * MiB
, 16 * MiB
, 8 * MiB
, 0
59 static int bamboo_load_device_tree(hwaddr addr
,
63 const char *kernel_cmdline
)
66 uint32_t mem_reg_property
[] = { 0, 0, cpu_to_be32(ramsize
) };
70 uint32_t tb_freq
= 400000000;
71 uint32_t clock_freq
= 400000000;
73 filename
= qemu_find_file(QEMU_FILE_TYPE_BIOS
, BINARY_DEVICE_TREE_FILE
);
77 fdt
= load_device_tree(filename
, &fdt_size
);
83 /* Manipulate device tree in memory. */
85 ret
= qemu_fdt_setprop(fdt
, "/memory", "reg", mem_reg_property
,
86 sizeof(mem_reg_property
));
88 fprintf(stderr
, "couldn't set /memory/reg\n");
90 ret
= qemu_fdt_setprop_cell(fdt
, "/chosen", "linux,initrd-start",
93 fprintf(stderr
, "couldn't set /chosen/linux,initrd-start\n");
95 ret
= qemu_fdt_setprop_cell(fdt
, "/chosen", "linux,initrd-end",
96 (initrd_base
+ initrd_size
));
98 fprintf(stderr
, "couldn't set /chosen/linux,initrd-end\n");
100 ret
= qemu_fdt_setprop_string(fdt
, "/chosen", "bootargs",
103 fprintf(stderr
, "couldn't set /chosen/bootargs\n");
105 /* Copy data from the host device tree into the guest. Since the guest can
106 * directly access the timebase without host involvement, we must expose
107 * the correct frequencies. */
109 tb_freq
= kvmppc_get_tbfreq();
110 clock_freq
= kvmppc_get_clockfreq();
113 qemu_fdt_setprop_cell(fdt
, "/cpus/cpu@0", "clock-frequency",
115 qemu_fdt_setprop_cell(fdt
, "/cpus/cpu@0", "timebase-frequency",
118 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
= 1U << 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
= 1U << 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 * MiB
) - 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(MachineState
*machine
)
162 const char *kernel_filename
= machine
->kernel_filename
;
163 const char *kernel_cmdline
= machine
->kernel_cmdline
;
164 const char *initrd_filename
= machine
->initrd_filename
;
165 unsigned int pci_irq_nrs
[4] = { 28, 27, 26, 25 };
166 MemoryRegion
*address_space_mem
= get_system_memory();
167 MemoryRegion
*isa
= g_new(MemoryRegion
, 1);
168 MemoryRegion
*ram_memories
= g_new(MemoryRegion
, PPC440EP_SDRAM_NR_BANKS
);
169 hwaddr ram_bases
[PPC440EP_SDRAM_NR_BANKS
];
170 hwaddr ram_sizes
[PPC440EP_SDRAM_NR_BANKS
];
176 target_long initrd_size
= 0;
181 cpu
= POWERPC_CPU(cpu_create(machine
->cpu_type
));
184 if (env
->mmu_model
!= POWERPC_MMU_BOOKE
) {
185 error_report("MMU model %i not supported by this machine",
190 qemu_register_reset(main_cpu_reset
, cpu
);
191 ppc_booke_timers_init(cpu
, 400000000, 0);
192 ppc_dcr_init(env
, NULL
, NULL
);
194 /* interrupt controller */
195 irqs
= g_new0(qemu_irq
, PPCUIC_OUTPUT_NB
);
196 irqs
[PPCUIC_OUTPUT_INT
] = ((qemu_irq
*)env
->irq_inputs
)[PPC40x_INPUT_INT
];
197 irqs
[PPCUIC_OUTPUT_CINT
] = ((qemu_irq
*)env
->irq_inputs
)[PPC40x_INPUT_CINT
];
198 pic
= ppcuic_init(env
, irqs
, 0x0C0, 0, 1);
200 /* SDRAM controller */
201 memset(ram_bases
, 0, sizeof(ram_bases
));
202 memset(ram_sizes
, 0, sizeof(ram_sizes
));
203 ppc4xx_sdram_banks(machine
->ram
, PPC440EP_SDRAM_NR_BANKS
, ram_memories
,
204 ram_bases
, ram_sizes
, ppc440ep_sdram_bank_sizes
);
205 /* XXX 440EP's ECC interrupts are on UIC1, but we've only created UIC0. */
206 ppc4xx_sdram_init(env
, pic
[14], PPC440EP_SDRAM_NR_BANKS
, ram_memories
,
207 ram_bases
, ram_sizes
, 1);
210 dev
= sysbus_create_varargs(TYPE_PPC4xx_PCI_HOST_BRIDGE
,
212 pic
[pci_irq_nrs
[0]], pic
[pci_irq_nrs
[1]],
213 pic
[pci_irq_nrs
[2]], pic
[pci_irq_nrs
[3]],
215 pcibus
= (PCIBus
*)qdev_get_child_bus(dev
, "pci.0");
217 error_report("couldn't create PCI controller");
221 memory_region_init_alias(isa
, NULL
, "isa_mmio",
222 get_system_io(), 0, PPC440EP_PCI_IOLEN
);
223 memory_region_add_subregion(get_system_memory(), PPC440EP_PCI_IO
, isa
);
225 if (serial_hd(0) != NULL
) {
226 serial_mm_init(address_space_mem
, 0xef600300, 0, pic
[0],
227 PPC_SERIAL_MM_BAUDBASE
, serial_hd(0),
230 if (serial_hd(1) != NULL
) {
231 serial_mm_init(address_space_mem
, 0xef600400, 0, pic
[1],
232 PPC_SERIAL_MM_BAUDBASE
, serial_hd(1),
237 /* Register network interfaces. */
238 for (i
= 0; i
< nb_nics
; i
++) {
239 /* There are no PCI NICs on the Bamboo board, but there are
240 * PCI slots, so we can pick whatever default model we want. */
241 pci_nic_init_nofail(&nd_table
[i
], pcibus
, "e1000", NULL
);
246 if (kernel_filename
) {
247 hwaddr loadaddr
= LOAD_UIMAGE_LOADADDR_INVALID
;
248 success
= load_uimage(kernel_filename
, &entry
, &loadaddr
, NULL
,
252 success
= load_elf(kernel_filename
, NULL
, NULL
, NULL
, &elf_entry
,
253 NULL
, NULL
, NULL
, 1, PPC_ELF_MACHINE
, 0, 0);
256 /* XXX try again as binary */
258 error_report("could not load kernel '%s'", kernel_filename
);
264 if (initrd_filename
) {
265 initrd_size
= load_image_targphys(initrd_filename
, RAMDISK_ADDR
,
266 machine
->ram_size
- RAMDISK_ADDR
);
268 if (initrd_size
< 0) {
269 error_report("could not load ram disk '%s' at %x",
270 initrd_filename
, RAMDISK_ADDR
);
275 /* If we're loading a kernel directly, we must load the device tree too. */
276 if (kernel_filename
) {
277 if (bamboo_load_device_tree(FDT_ADDR
, machine
->ram_size
, RAMDISK_ADDR
,
278 initrd_size
, kernel_cmdline
) < 0) {
279 error_report("couldn't load device tree");
285 static void bamboo_machine_init(MachineClass
*mc
)
288 mc
->init
= bamboo_init
;
289 mc
->default_cpu_type
= POWERPC_CPU_TYPE_NAME("440epb");
290 mc
->default_ram_id
= "ppc4xx.sdram";
293 DEFINE_MACHINE("bamboo", bamboo_machine_init
)