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2c9fade2 AJ |
1 | /* |
2 | * Qemu PowerPC 440 Bamboo board emulation | |
3 | * | |
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> | |
9 | * | |
10 | * This work is licensed under the GNU GPL license version 2 or later. | |
11 | * | |
12 | */ | |
13 | ||
14 | #include "config.h" | |
15 | #include "qemu-common.h" | |
16 | #include "net.h" | |
17 | #include "hw.h" | |
18 | #include "pci.h" | |
19 | #include "virtio-blk.h" | |
5fc1503e | 20 | #include "virtio-console.h" |
2c9fade2 AJ |
21 | #include "boards.h" |
22 | #include "sysemu.h" | |
23 | #include "ppc440.h" | |
24 | #include "kvm.h" | |
25 | #include "kvm_ppc.h" | |
26 | #include "device_tree.h" | |
27 | ||
28 | #define BINARY_DEVICE_TREE_FILE "bamboo.dtb" | |
29 | ||
7ec632b4 | 30 | static void *bamboo_load_device_tree(target_phys_addr_t addr, |
2c9fade2 AJ |
31 | uint32_t ramsize, |
32 | target_phys_addr_t initrd_base, | |
33 | target_phys_addr_t initrd_size, | |
34 | const char *kernel_cmdline) | |
35 | { | |
36 | void *fdt = NULL; | |
37 | #ifdef HAVE_FDT | |
38 | uint32_t mem_reg_property[] = { 0, 0, ramsize }; | |
39 | char *path; | |
7ec632b4 | 40 | int fdt_size; |
2c9fade2 AJ |
41 | int pathlen; |
42 | int ret; | |
43 | ||
44 | pathlen = snprintf(NULL, 0, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE) + 1; | |
45 | path = qemu_malloc(pathlen); | |
2c9fade2 AJ |
46 | |
47 | snprintf(path, pathlen, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE); | |
48 | ||
7ec632b4 | 49 | fdt = load_device_tree(path, &fdt_size); |
2c9fade2 AJ |
50 | free(path); |
51 | if (fdt == NULL) | |
52 | goto out; | |
53 | ||
54 | /* Manipulate device tree in memory. */ | |
55 | ||
56 | ret = qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property, | |
57 | sizeof(mem_reg_property)); | |
58 | if (ret < 0) | |
59 | fprintf(stderr, "couldn't set /memory/reg\n"); | |
60 | ||
61 | ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start", | |
62 | initrd_base); | |
63 | if (ret < 0) | |
64 | fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n"); | |
65 | ||
66 | ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end", | |
67 | (initrd_base + initrd_size)); | |
68 | if (ret < 0) | |
69 | fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n"); | |
70 | ||
71 | ret = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", | |
72 | kernel_cmdline); | |
73 | if (ret < 0) | |
74 | fprintf(stderr, "couldn't set /chosen/bootargs\n"); | |
75 | ||
76 | if (kvm_enabled()) | |
77 | kvmppc_fdt_update(fdt); | |
78 | ||
7ec632b4 PB |
79 | cpu_physical_memory_write (addr, (void *)fdt, fdt_size); |
80 | ||
2c9fade2 AJ |
81 | out: |
82 | #endif | |
83 | ||
84 | return fdt; | |
85 | } | |
86 | ||
87 | static void bamboo_init(ram_addr_t ram_size, int vga_ram_size, | |
a147d62b | 88 | const char *boot_device, |
2c9fade2 AJ |
89 | const char *kernel_filename, |
90 | const char *kernel_cmdline, | |
91 | const char *initrd_filename, | |
92 | const char *cpu_model) | |
93 | { | |
94 | unsigned int pci_irq_nrs[4] = { 28, 27, 26, 25 }; | |
2c9fade2 AJ |
95 | PCIBus *pcibus; |
96 | CPUState *env; | |
97 | uint64_t elf_entry; | |
98 | uint64_t elf_lowaddr; | |
99 | target_ulong entry = 0; | |
100 | target_ulong loadaddr = 0; | |
101 | target_long kernel_size = 0; | |
102 | target_ulong initrd_base = 0; | |
103 | target_long initrd_size = 0; | |
104 | target_ulong dt_base = 0; | |
105 | void *fdt; | |
106 | int i; | |
107 | ||
108 | /* Setup CPU. */ | |
109 | env = ppc440ep_init(&ram_size, &pcibus, pci_irq_nrs, 1); | |
110 | ||
111 | if (pcibus) { | |
112 | int unit_id = 0; | |
113 | ||
114 | /* Add virtio block devices. */ | |
115 | while ((i = drive_get_index(IF_VIRTIO, 0, unit_id)) != -1) { | |
116 | virtio_blk_init(pcibus, drives_table[i].bdrv); | |
117 | unit_id++; | |
118 | } | |
119 | ||
5fc1503e AL |
120 | /* Add virtio console devices */ |
121 | for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) { | |
122 | if (virtcon_hds[i]) | |
123 | virtio_console_init(pcibus, virtcon_hds[i]); | |
124 | } | |
125 | ||
2c9fade2 AJ |
126 | /* Register network interfaces. */ |
127 | for (i = 0; i < nb_nics; i++) { | |
cb457d76 AL |
128 | /* There are no PCI NICs on the Bamboo board, but there are |
129 | * PCI slots, so we can pick whatever default model we want. */ | |
130 | pci_nic_init(pcibus, &nd_table[i], -1, "e1000"); | |
2c9fade2 AJ |
131 | } |
132 | } | |
133 | ||
134 | /* Load kernel. */ | |
135 | if (kernel_filename) { | |
136 | kernel_size = load_uimage(kernel_filename, &entry, &loadaddr, NULL); | |
137 | if (kernel_size < 0) { | |
138 | kernel_size = load_elf(kernel_filename, 0, &elf_entry, &elf_lowaddr, | |
139 | NULL); | |
140 | entry = elf_entry; | |
141 | loadaddr = elf_lowaddr; | |
142 | } | |
143 | /* XXX try again as binary */ | |
144 | if (kernel_size < 0) { | |
145 | fprintf(stderr, "qemu: could not load kernel '%s'\n", | |
146 | kernel_filename); | |
147 | exit(1); | |
148 | } | |
149 | } | |
150 | ||
151 | /* Load initrd. */ | |
152 | if (initrd_filename) { | |
153 | initrd_base = kernel_size + loadaddr; | |
dcac9679 PB |
154 | initrd_size = load_image_targphys(initrd_filename, initrd_base, |
155 | ram_size - initrd_base); | |
2c9fade2 AJ |
156 | |
157 | if (initrd_size < 0) { | |
158 | fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", | |
159 | initrd_filename); | |
160 | exit(1); | |
161 | } | |
162 | } | |
163 | ||
164 | /* If we're loading a kernel directly, we must load the device tree too. */ | |
165 | if (kernel_filename) { | |
166 | if (initrd_base) | |
167 | dt_base = initrd_base + initrd_size; | |
168 | else | |
169 | dt_base = kernel_size + loadaddr; | |
170 | ||
7ec632b4 | 171 | fdt = bamboo_load_device_tree(dt_base, ram_size, |
2c9fade2 AJ |
172 | initrd_base, initrd_size, kernel_cmdline); |
173 | if (fdt == NULL) { | |
174 | fprintf(stderr, "couldn't load device tree\n"); | |
175 | exit(1); | |
176 | } | |
177 | ||
178 | /* Set initial guest state. */ | |
179 | env->gpr[1] = (16<<20) - 8; | |
180 | env->gpr[3] = dt_base; | |
181 | env->nip = entry; | |
182 | /* XXX we currently depend on KVM to create some initial TLB entries. */ | |
183 | } | |
184 | ||
185 | if (kvm_enabled()) | |
186 | kvmppc_init(); | |
187 | } | |
188 | ||
189 | QEMUMachine bamboo_machine = { | |
190 | .name = "bamboo", | |
191 | .desc = "bamboo", | |
192 | .init = bamboo_init, | |
193 | .ram_require = 8<<20 | RAMSIZE_FIXED, | |
194 | }; |