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