diff options
Diffstat (limited to 'hw/ppc440_bamboo.c')
| -rw-r--r-- | hw/ppc440_bamboo.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/hw/ppc440_bamboo.c b/hw/ppc440_bamboo.c new file mode 100644 index 0000000..b16864f --- /dev/null +++ b/hw/ppc440_bamboo.c @@ -0,0 +1,204 @@ +/* + * Qemu PowerPC 440 Bamboo board emulation + * + * Copyright 2007 IBM Corporation. + * Authors: + * Jerone Young <jyoung5@us.ibm.com> + * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> + * Hollis Blanchard <hollisb@us.ibm.com> + * + * This work is licensed under the GNU GPL license version 2 or later. + * + */ + +#include "config.h" +#include "qemu-common.h" +#include "net.h" +#include "hw.h" +#include "pci.h" +#include "boards.h" +#include "sysemu.h" +#include "ppc440.h" +#include "kvm.h" +#include "kvm_ppc.h" +#include "device_tree.h" +#include "loader.h" +#include "elf.h" +#include "qemu-kvm.h" + +#define BINARY_DEVICE_TREE_FILE "bamboo.dtb" + +/* from u-boot */ +#define KERNEL_ADDR 0x1000000 +#define FDT_ADDR 0x1800000 +#define RAMDISK_ADDR 0x1900000 + +static int bamboo_load_device_tree(target_phys_addr_t addr, + uint32_t ramsize, + target_phys_addr_t initrd_base, + target_phys_addr_t initrd_size, + const char *kernel_cmdline) +{ + int ret = -1; +#ifdef CONFIG_FDT + uint32_t mem_reg_property[] = { 0, 0, ramsize }; + char *filename; + int fdt_size; + void *fdt; + + filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE); + if (!filename) { + goto out; + } + fdt = load_device_tree(filename, &fdt_size); + qemu_free(filename); + if (fdt == NULL) { + goto out; + } + + /* Manipulate device tree in memory. */ + + ret = qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property, + sizeof(mem_reg_property)); + if (ret < 0) + fprintf(stderr, "couldn't set /memory/reg\n"); + + ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start", + initrd_base); + if (ret < 0) + fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n"); + + ret = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end", + (initrd_base + initrd_size)); + if (ret < 0) + fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n"); + + ret = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs", + kernel_cmdline); + if (ret < 0) + fprintf(stderr, "couldn't set /chosen/bootargs\n"); + + if (kvm_enabled()) + kvmppc_fdt_update(fdt); + + ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr); + qemu_free(fdt); + +out: +#endif + + return ret; +} + +static void bamboo_init(ram_addr_t ram_size, + const char *boot_device, + const char *kernel_filename, + const char *kernel_cmdline, + const char *initrd_filename, + const char *cpu_model) +{ + unsigned int pci_irq_nrs[4] = { 28, 27, 26, 25 }; + PCIBus *pcibus; + CPUState *env; + uint64_t elf_entry; + uint64_t elf_lowaddr; + target_phys_addr_t entry = 0; + target_phys_addr_t loadaddr = 0; + target_long initrd_size = 0; + int success; + int i; + + /* Setup CPU. */ + env = ppc440ep_init(&ram_size, &pcibus, pci_irq_nrs, 1, cpu_model); + + if (pcibus) { + /* Register network interfaces. */ + for (i = 0; i < nb_nics; i++) { + /* There are no PCI NICs on the Bamboo board, but there are + * PCI slots, so we can pick whatever default model we want. */ + pci_nic_init_nofail(&nd_table[i], "e1000", NULL); + } + } + + /* Load kernel. */ + if (kernel_filename) { + success = load_uimage(kernel_filename, &entry, &loadaddr, NULL); + if (success < 0) { + success = load_elf(kernel_filename, NULL, NULL, &elf_entry, + &elf_lowaddr, NULL, 1, ELF_MACHINE, 0); + entry = elf_entry; + loadaddr = elf_lowaddr; + } + /* XXX try again as binary */ + if (success < 0) { + fprintf(stderr, "qemu: could not load kernel '%s'\n", + kernel_filename); + exit(1); + } + } + + /* Load initrd. */ + if (initrd_filename) { + initrd_size = load_image_targphys(initrd_filename, RAMDISK_ADDR, + ram_size - RAMDISK_ADDR); + + if (initrd_size < 0) { + fprintf(stderr, "qemu: could not load ram disk '%s' at %x\n", + initrd_filename, RAMDISK_ADDR); + exit(1); + } + } + + /* If we're loading a kernel directly, we must load the device tree too. */ + if (kernel_filename) { + if (bamboo_load_device_tree(FDT_ADDR, ram_size, RAMDISK_ADDR, + initrd_size, kernel_cmdline) < 0) { + fprintf(stderr, "couldn't load device tree\n"); + exit(1); + } + + cpu_synchronize_state(env); + + /* Set initial guest state. */ + env->gpr[1] = (16<<20) - 8; + env->gpr[3] = FDT_ADDR; + env->nip = entry; + /* XXX we currently depend on KVM to create some initial TLB entries. */ + } + + if (kvm_enabled()) + kvmppc_init(); +} + +static QEMUMachine bamboo_machine = { + .name = "bamboo-0.13", + .alias = "bamboo", + .desc = "bamboo", + .init = bamboo_init, +}; + +static QEMUMachine bamboo_machine_v0_12 = { + .name = "bamboo-0.12", + .desc = "bamboo", + .init = bamboo_init, + .compat_props = (GlobalProperty[]) { + { + .driver = "virtio-serial-pci", + .property = "max_ports", + .value = stringify(1), + },{ + .driver = "virtio-serial-pci", + .property = "vectors", + .value = stringify(0), + }, + { /* end of list */ } + }, +}; + +static void bamboo_machine_init(void) +{ + qemu_register_machine(&bamboo_machine); + qemu_register_machine(&bamboo_machine_v0_12); +} + +machine_init(bamboo_machine_init); |