root / hw / ppc440_bamboo.c @ 7ffa4767
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1 | 2c9fade2 | aurel32 | /*
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2 | 2c9fade2 | aurel32 | * Qemu PowerPC 440 Bamboo board emulation
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3 | 2c9fade2 | aurel32 | *
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4 | 2c9fade2 | aurel32 | * Copyright 2007 IBM Corporation.
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5 | 2c9fade2 | aurel32 | * Authors:
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6 | 2c9fade2 | aurel32 | * Jerone Young <jyoung5@us.ibm.com>
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7 | 2c9fade2 | aurel32 | * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
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8 | 2c9fade2 | aurel32 | * Hollis Blanchard <hollisb@us.ibm.com>
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9 | 2c9fade2 | aurel32 | *
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10 | 2c9fade2 | aurel32 | * This work is licensed under the GNU GPL license version 2 or later.
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11 | 2c9fade2 | aurel32 | *
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12 | 2c9fade2 | aurel32 | */
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13 | 2c9fade2 | aurel32 | |
14 | 2c9fade2 | aurel32 | #include "config.h" |
15 | 2c9fade2 | aurel32 | #include "qemu-common.h" |
16 | 2c9fade2 | aurel32 | #include "net.h" |
17 | 2c9fade2 | aurel32 | #include "hw.h" |
18 | 2c9fade2 | aurel32 | #include "pci.h" |
19 | 2c9fade2 | aurel32 | #include "virtio-blk.h" |
20 | 5fc1503e | aliguori | #include "virtio-console.h" |
21 | 2c9fade2 | aurel32 | #include "boards.h" |
22 | 2c9fade2 | aurel32 | #include "sysemu.h" |
23 | 2c9fade2 | aurel32 | #include "ppc440.h" |
24 | 2c9fade2 | aurel32 | #include "kvm.h" |
25 | 2c9fade2 | aurel32 | #include "kvm_ppc.h" |
26 | 2c9fade2 | aurel32 | #include "device_tree.h" |
27 | 2c9fade2 | aurel32 | |
28 | 2c9fade2 | aurel32 | #define BINARY_DEVICE_TREE_FILE "bamboo.dtb" |
29 | 2c9fade2 | aurel32 | |
30 | 2c9fade2 | aurel32 | static void *bamboo_load_device_tree(void *addr, |
31 | 2c9fade2 | aurel32 | uint32_t ramsize, |
32 | 2c9fade2 | aurel32 | target_phys_addr_t initrd_base, |
33 | 2c9fade2 | aurel32 | target_phys_addr_t initrd_size, |
34 | 2c9fade2 | aurel32 | const char *kernel_cmdline) |
35 | 2c9fade2 | aurel32 | { |
36 | 2c9fade2 | aurel32 | void *fdt = NULL; |
37 | 2c9fade2 | aurel32 | #ifdef HAVE_FDT
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38 | 2c9fade2 | aurel32 | uint32_t mem_reg_property[] = { 0, 0, ramsize }; |
39 | 2c9fade2 | aurel32 | char *path;
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40 | 2c9fade2 | aurel32 | int pathlen;
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41 | 2c9fade2 | aurel32 | int ret;
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42 | 2c9fade2 | aurel32 | |
43 | 2c9fade2 | aurel32 | pathlen = snprintf(NULL, 0, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE) + 1; |
44 | 2c9fade2 | aurel32 | path = qemu_malloc(pathlen); |
45 | 2c9fade2 | aurel32 | |
46 | 2c9fade2 | aurel32 | snprintf(path, pathlen, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE);
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47 | 2c9fade2 | aurel32 | |
48 | 2c9fade2 | aurel32 | fdt = load_device_tree(path, addr); |
49 | 2c9fade2 | aurel32 | free(path); |
50 | 2c9fade2 | aurel32 | if (fdt == NULL) |
51 | 2c9fade2 | aurel32 | goto out;
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52 | 2c9fade2 | aurel32 | |
53 | 2c9fade2 | aurel32 | /* Manipulate device tree in memory. */
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54 | 2c9fade2 | aurel32 | |
55 | 2c9fade2 | aurel32 | ret = qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property, |
56 | 2c9fade2 | aurel32 | sizeof(mem_reg_property));
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57 | 2c9fade2 | aurel32 | if (ret < 0) |
58 | 2c9fade2 | aurel32 | fprintf(stderr, "couldn't set /memory/reg\n");
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59 | 2c9fade2 | aurel32 | |
60 | 2c9fade2 | aurel32 | ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start", |
61 | 2c9fade2 | aurel32 | initrd_base); |
62 | 2c9fade2 | aurel32 | if (ret < 0) |
63 | 2c9fade2 | aurel32 | fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
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64 | 2c9fade2 | aurel32 | |
65 | 2c9fade2 | aurel32 | ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end", |
66 | 2c9fade2 | aurel32 | (initrd_base + initrd_size)); |
67 | 2c9fade2 | aurel32 | if (ret < 0) |
68 | 2c9fade2 | aurel32 | fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
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69 | 2c9fade2 | aurel32 | |
70 | 2c9fade2 | aurel32 | ret = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", |
71 | 2c9fade2 | aurel32 | kernel_cmdline); |
72 | 2c9fade2 | aurel32 | if (ret < 0) |
73 | 2c9fade2 | aurel32 | fprintf(stderr, "couldn't set /chosen/bootargs\n");
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74 | 2c9fade2 | aurel32 | |
75 | 2c9fade2 | aurel32 | if (kvm_enabled())
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76 | 2c9fade2 | aurel32 | kvmppc_fdt_update(fdt); |
77 | 2c9fade2 | aurel32 | |
78 | 2c9fade2 | aurel32 | out:
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79 | 2c9fade2 | aurel32 | #endif
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80 | 2c9fade2 | aurel32 | |
81 | 2c9fade2 | aurel32 | return fdt;
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82 | 2c9fade2 | aurel32 | } |
83 | 2c9fade2 | aurel32 | |
84 | 2c9fade2 | aurel32 | static void bamboo_init(ram_addr_t ram_size, int vga_ram_size, |
85 | a147d62b | blueswir1 | const char *boot_device, |
86 | 2c9fade2 | aurel32 | const char *kernel_filename, |
87 | 2c9fade2 | aurel32 | const char *kernel_cmdline, |
88 | 2c9fade2 | aurel32 | const char *initrd_filename, |
89 | 2c9fade2 | aurel32 | const char *cpu_model) |
90 | 2c9fade2 | aurel32 | { |
91 | 2c9fade2 | aurel32 | unsigned int pci_irq_nrs[4] = { 28, 27, 26, 25 }; |
92 | 2c9fade2 | aurel32 | PCIBus *pcibus; |
93 | 2c9fade2 | aurel32 | CPUState *env; |
94 | 2c9fade2 | aurel32 | uint64_t elf_entry; |
95 | 2c9fade2 | aurel32 | uint64_t elf_lowaddr; |
96 | 2c9fade2 | aurel32 | target_ulong entry = 0;
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97 | 2c9fade2 | aurel32 | target_ulong loadaddr = 0;
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98 | 2c9fade2 | aurel32 | target_long kernel_size = 0;
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99 | 2c9fade2 | aurel32 | target_ulong initrd_base = 0;
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100 | 2c9fade2 | aurel32 | target_long initrd_size = 0;
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101 | 2c9fade2 | aurel32 | target_ulong dt_base = 0;
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102 | 2c9fade2 | aurel32 | void *fdt;
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103 | 2c9fade2 | aurel32 | int i;
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104 | 2c9fade2 | aurel32 | |
105 | 2c9fade2 | aurel32 | /* Setup CPU. */
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106 | 2c9fade2 | aurel32 | env = ppc440ep_init(&ram_size, &pcibus, pci_irq_nrs, 1);
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107 | 2c9fade2 | aurel32 | |
108 | 2c9fade2 | aurel32 | if (pcibus) {
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109 | 2c9fade2 | aurel32 | int unit_id = 0; |
110 | 2c9fade2 | aurel32 | |
111 | 2c9fade2 | aurel32 | /* Add virtio block devices. */
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112 | 2c9fade2 | aurel32 | while ((i = drive_get_index(IF_VIRTIO, 0, unit_id)) != -1) { |
113 | 2c9fade2 | aurel32 | virtio_blk_init(pcibus, drives_table[i].bdrv); |
114 | 2c9fade2 | aurel32 | unit_id++; |
115 | 2c9fade2 | aurel32 | } |
116 | 2c9fade2 | aurel32 | |
117 | 5fc1503e | aliguori | /* Add virtio console devices */
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118 | 5fc1503e | aliguori | for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) { |
119 | 5fc1503e | aliguori | if (virtcon_hds[i])
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120 | 5fc1503e | aliguori | virtio_console_init(pcibus, virtcon_hds[i]); |
121 | 5fc1503e | aliguori | } |
122 | 5fc1503e | aliguori | |
123 | 2c9fade2 | aurel32 | /* Register network interfaces. */
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124 | 2c9fade2 | aurel32 | for (i = 0; i < nb_nics; i++) { |
125 | cb457d76 | aliguori | /* There are no PCI NICs on the Bamboo board, but there are
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126 | cb457d76 | aliguori | * PCI slots, so we can pick whatever default model we want. */
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127 | cb457d76 | aliguori | pci_nic_init(pcibus, &nd_table[i], -1, "e1000"); |
128 | 2c9fade2 | aurel32 | } |
129 | 2c9fade2 | aurel32 | } |
130 | 2c9fade2 | aurel32 | |
131 | 2c9fade2 | aurel32 | /* Load kernel. */
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132 | 2c9fade2 | aurel32 | if (kernel_filename) {
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133 | 2c9fade2 | aurel32 | kernel_size = load_uimage(kernel_filename, &entry, &loadaddr, NULL);
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134 | 2c9fade2 | aurel32 | if (kernel_size < 0) { |
135 | 2c9fade2 | aurel32 | kernel_size = load_elf(kernel_filename, 0, &elf_entry, &elf_lowaddr,
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136 | 2c9fade2 | aurel32 | NULL);
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137 | 2c9fade2 | aurel32 | entry = elf_entry; |
138 | 2c9fade2 | aurel32 | loadaddr = elf_lowaddr; |
139 | 2c9fade2 | aurel32 | } |
140 | 2c9fade2 | aurel32 | /* XXX try again as binary */
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141 | 2c9fade2 | aurel32 | if (kernel_size < 0) { |
142 | 2c9fade2 | aurel32 | fprintf(stderr, "qemu: could not load kernel '%s'\n",
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143 | 2c9fade2 | aurel32 | kernel_filename); |
144 | 2c9fade2 | aurel32 | exit(1);
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145 | 2c9fade2 | aurel32 | } |
146 | 2c9fade2 | aurel32 | } |
147 | 2c9fade2 | aurel32 | |
148 | 2c9fade2 | aurel32 | /* Load initrd. */
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149 | 2c9fade2 | aurel32 | if (initrd_filename) {
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150 | 2c9fade2 | aurel32 | initrd_base = kernel_size + loadaddr; |
151 | dcac9679 | pbrook | initrd_size = load_image_targphys(initrd_filename, initrd_base, |
152 | dcac9679 | pbrook | ram_size - initrd_base); |
153 | 2c9fade2 | aurel32 | |
154 | 2c9fade2 | aurel32 | if (initrd_size < 0) { |
155 | 2c9fade2 | aurel32 | fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
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156 | 2c9fade2 | aurel32 | initrd_filename); |
157 | 2c9fade2 | aurel32 | exit(1);
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158 | 2c9fade2 | aurel32 | } |
159 | 2c9fade2 | aurel32 | } |
160 | 2c9fade2 | aurel32 | |
161 | 2c9fade2 | aurel32 | /* If we're loading a kernel directly, we must load the device tree too. */
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162 | 2c9fade2 | aurel32 | if (kernel_filename) {
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163 | 2c9fade2 | aurel32 | if (initrd_base)
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164 | 2c9fade2 | aurel32 | dt_base = initrd_base + initrd_size; |
165 | 2c9fade2 | aurel32 | else
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166 | 2c9fade2 | aurel32 | dt_base = kernel_size + loadaddr; |
167 | 2c9fade2 | aurel32 | |
168 | 2c9fade2 | aurel32 | fdt = bamboo_load_device_tree(phys_ram_base + dt_base, ram_size, |
169 | 2c9fade2 | aurel32 | initrd_base, initrd_size, kernel_cmdline); |
170 | 2c9fade2 | aurel32 | if (fdt == NULL) { |
171 | 2c9fade2 | aurel32 | fprintf(stderr, "couldn't load device tree\n");
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172 | 2c9fade2 | aurel32 | exit(1);
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173 | 2c9fade2 | aurel32 | } |
174 | 2c9fade2 | aurel32 | |
175 | 2c9fade2 | aurel32 | /* Set initial guest state. */
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176 | 2c9fade2 | aurel32 | env->gpr[1] = (16<<20) - 8; |
177 | 2c9fade2 | aurel32 | env->gpr[3] = dt_base;
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178 | 2c9fade2 | aurel32 | env->nip = entry; |
179 | 2c9fade2 | aurel32 | /* XXX we currently depend on KVM to create some initial TLB entries. */
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180 | 2c9fade2 | aurel32 | } |
181 | 2c9fade2 | aurel32 | |
182 | 2c9fade2 | aurel32 | if (kvm_enabled())
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183 | 2c9fade2 | aurel32 | kvmppc_init(); |
184 | 2c9fade2 | aurel32 | } |
185 | 2c9fade2 | aurel32 | |
186 | 2c9fade2 | aurel32 | QEMUMachine bamboo_machine = { |
187 | 2c9fade2 | aurel32 | .name = "bamboo",
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188 | 2c9fade2 | aurel32 | .desc = "bamboo",
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189 | 2c9fade2 | aurel32 | .init = bamboo_init, |
190 | 2c9fade2 | aurel32 | .ram_require = 8<<20 | RAMSIZE_FIXED, |
191 | 2c9fade2 | aurel32 | }; |