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* Qemu PowerPC 440 Bamboo board emulation
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* Copyright 2007 IBM Corporation.
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* Jerone Young <jyoung5@us.ibm.com>
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* Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
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* Hollis Blanchard <hollisb@us.ibm.com>
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* This work is licensed under the GNU GPL license version 2 or later.
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#include "qemu-common.h"
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#include "virtio-blk.h"
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#include "virtio-console.h"
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#include "device_tree.h"
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#define BINARY_DEVICE_TREE_FILE "bamboo.dtb"
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static void *bamboo_load_device_tree(void *addr,
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target_phys_addr_t initrd_base,
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target_phys_addr_t initrd_size,
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const char *kernel_cmdline)
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uint32_t mem_reg_property[] = { 0, 0, ramsize };
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pathlen = snprintf(NULL, 0, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE) + 1;
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path = qemu_malloc(pathlen);
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snprintf(path, pathlen, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE);
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fdt = load_device_tree(path, addr);
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/* Manipulate device tree in memory. */
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ret = qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property,
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sizeof(mem_reg_property));
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fprintf(stderr, "couldn't set /memory/reg\n");
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ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start",
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fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
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ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end",
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(initrd_base + initrd_size));
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fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
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ret = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs",
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fprintf(stderr, "couldn't set /chosen/bootargs\n");
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kvmppc_fdt_update(fdt);
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static void bamboo_init(ram_addr_t ram_size, int vga_ram_size,
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const char *boot_device,
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const char *kernel_filename,
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const char *kernel_cmdline,
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const char *initrd_filename,
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const char *cpu_model)
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unsigned int pci_irq_nrs[4] = { 28, 27, 26, 25 };
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target_ulong entry = 0;
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target_ulong loadaddr = 0;
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target_long kernel_size = 0;
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target_ulong initrd_base = 0;
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target_long initrd_size = 0;
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target_ulong dt_base = 0;
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env = ppc440ep_init(&ram_size, &pcibus, pci_irq_nrs, 1);
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/* Add virtio block devices. */
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while ((i = drive_get_index(IF_VIRTIO, 0, unit_id)) != -1) {
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virtio_blk_init(pcibus, drives_table[i].bdrv);
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/* Add virtio console devices */
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for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
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virtio_console_init(pcibus, virtcon_hds[i]);
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/* Register network interfaces. */
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for (i = 0; i < nb_nics; i++) {
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/* There are no PCI NICs on the Bamboo board, but there are
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* PCI slots, so we can pick whatever default model we want. */
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pci_nic_init(pcibus, &nd_table[i], -1, "e1000");
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if (kernel_filename) {
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kernel_size = load_uimage(kernel_filename, &entry, &loadaddr, NULL);
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if (kernel_size < 0) {
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kernel_size = load_elf(kernel_filename, 0, &elf_entry, &elf_lowaddr,
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loadaddr = elf_lowaddr;
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/* XXX try again as binary */
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if (kernel_size < 0) {
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fprintf(stderr, "qemu: could not load kernel '%s'\n",
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if (initrd_filename) {
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initrd_base = kernel_size + loadaddr;
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initrd_size = load_image(initrd_filename, phys_ram_base + initrd_base);
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if (initrd_size < 0) {
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fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
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/* If we're loading a kernel directly, we must load the device tree too. */
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if (kernel_filename) {
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dt_base = initrd_base + initrd_size;
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dt_base = kernel_size + loadaddr;
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fdt = bamboo_load_device_tree(phys_ram_base + dt_base, ram_size,
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initrd_base, initrd_size, kernel_cmdline);
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fprintf(stderr, "couldn't load device tree\n");
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/* Set initial guest state. */
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env->gpr[1] = (16<<20) - 8;
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env->gpr[3] = dt_base;
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/* XXX we currently depend on KVM to create some initial TLB entries. */
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QEMUMachine bamboo_machine = {
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.ram_require = 8<<20 | RAMSIZE_FIXED,