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Annotation of qemu/hw/ppc440_bamboo.c, revision 1.1

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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