root / hw / ppc440_bamboo.c @ 04088adb
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/*
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* Qemu PowerPC 440 Bamboo board emulation
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*
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* Copyright 2007 IBM Corporation.
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* Authors:
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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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*
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* This work is licensed under the GNU GPL license version 2 or later.
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*
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*/
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#include "config.h" |
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#include "qemu-common.h" |
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#include "net.h" |
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#include "hw.h" |
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#include "pci.h" |
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#include "boards.h" |
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#include "sysemu.h" |
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#include "ppc440.h" |
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#include "kvm.h" |
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#include "kvm_ppc.h" |
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#include "device_tree.h" |
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#include "loader.h" |
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#include "elf.h" |
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#define BINARY_DEVICE_TREE_FILE "bamboo.dtb" |
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static int bamboo_load_device_tree(target_phys_addr_t addr, |
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uint32_t ramsize, |
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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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{ |
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void *fdt = NULL; |
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#ifdef CONFIG_FDT
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uint32_t mem_reg_property[] = { 0, 0, ramsize }; |
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char *filename;
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int fdt_size;
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int ret;
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filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE); |
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if (!filename) {
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ret = -1;
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goto out;
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} |
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fdt = load_device_tree(filename, &fdt_size); |
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qemu_free(filename); |
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if (fdt == NULL) { |
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ret = -1;
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goto out;
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} |
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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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if (ret < 0) |
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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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initrd_base); |
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if (ret < 0) |
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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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if (ret < 0) |
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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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kernel_cmdline); |
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if (ret < 0) |
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fprintf(stderr, "couldn't set /chosen/bootargs\n");
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if (kvm_enabled())
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kvmppc_fdt_update(fdt); |
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ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr); |
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qemu_free(fdt); |
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out:
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#endif
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return ret;
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} |
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static void bamboo_init(ram_addr_t 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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{ |
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unsigned int pci_irq_nrs[4] = { 28, 27, 26, 25 }; |
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PCIBus *pcibus; |
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CPUState *env; |
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uint64_t elf_entry; |
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uint64_t elf_lowaddr; |
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target_phys_addr_t entry = 0;
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target_phys_addr_t 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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int i;
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/* Setup CPU. */
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env = ppc440ep_init(&ram_size, &pcibus, pci_irq_nrs, 1, cpu_model);
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if (pcibus) {
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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_nofail(&nd_table[i], "e1000", NULL); |
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} |
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} |
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/* Load kernel. */
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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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NULL, 1, ELF_MACHINE, 0); |
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entry = elf_entry; |
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loadaddr = elf_lowaddr; |
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} |
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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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kernel_filename); |
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exit(1);
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} |
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} |
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/* Load initrd. */
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if (initrd_filename) {
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initrd_base = kernel_size + loadaddr; |
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initrd_size = load_image_targphys(initrd_filename, initrd_base, |
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ram_size - 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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initrd_filename); |
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exit(1);
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} |
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} |
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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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if (initrd_base)
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dt_base = initrd_base + initrd_size; |
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else
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dt_base = kernel_size + loadaddr; |
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if (bamboo_load_device_tree(dt_base, ram_size,
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initrd_base, initrd_size, kernel_cmdline) < 0) {
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fprintf(stderr, "couldn't load device tree\n");
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exit(1);
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} |
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cpu_synchronize_state(env); |
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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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env->nip = entry; |
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/* XXX we currently depend on KVM to create some initial TLB entries. */
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} |
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if (kvm_enabled())
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kvmppc_init(); |
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} |
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static QEMUMachine bamboo_machine = {
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.name = "bamboo",
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.desc = "bamboo",
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.init = bamboo_init, |
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}; |
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static void bamboo_machine_init(void) |
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{ |
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qemu_register_machine(&bamboo_machine); |
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} |
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machine_init(bamboo_machine_init); |