4 * Copyright IBM, Corp. 2012
9 * This work is licensed under the terms of the GNU GPL, version 2 or (at your
10 * option) any later version. See the COPYING file in the top-level directory.
14 #include "sysemu/sysemu.h"
17 #include "hw/loader.h"
18 #include "hw/sysbus.h"
20 #define KERN_IMAGE_START 0x010000UL
21 #define KERN_PARM_AREA 0x010480UL
22 #define INITRD_START 0x800000UL
23 #define INITRD_PARM_START 0x010408UL
24 #define INITRD_PARM_SIZE 0x010410UL
25 #define PARMFILE_START 0x001000UL
26 #define ZIPL_FILENAME "s390-zipl.rom"
27 #define ZIPL_IMAGE_START 0x009000UL
28 #define IPL_PSW_MASK (PSW_MASK_32 | PSW_MASK_64)
30 #define TYPE_S390_IPL "s390-ipl"
31 #define S390_IPL(obj) \
32 OBJECT_CHECK(S390IPLState, (obj), TYPE_S390_IPL)
34 #define S390_IPL_CLASS(klass) \
35 OBJECT_CLASS_CHECK(S390IPLState, (klass), TYPE_S390_IPL)
36 #define S390_IPL_GET_CLASS(obj) \
37 OBJECT_GET_CLASS(S390IPLState, (obj), TYPE_S390_IPL)
40 typedef struct S390IPLClass {
42 SysBusDeviceClass parent_class;
45 void (*parent_reset) (SysBusDevice *dev);
48 typedef struct S390IPLState {
50 SysBusDevice parent_obj;
60 static void s390_ipl_cpu(uint64_t pswaddr)
62 S390CPU *cpu = S390_CPU(qemu_get_cpu(0));
63 CPUS390XState *env = &cpu->env;
65 env->psw.addr = pswaddr;
66 env->psw.mask = IPL_PSW_MASK;
67 s390_add_running_cpu(cpu);
70 static int s390_ipl_init(SysBusDevice *dev)
72 S390IPLState *ipl = S390_IPL(dev);
73 ram_addr_t kernel_size = 0;
76 ram_addr_t bios_size = 0;
79 /* Load zipl bootloader */
80 if (bios_name == NULL) {
81 bios_name = ZIPL_FILENAME;
84 bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
85 bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START, 4096);
86 ipl->start_addr = ZIPL_IMAGE_START;
87 g_free(bios_filename);
89 if ((long)bios_size < 0) {
90 hw_error("could not load bootloader '%s'\n", bios_name);
93 if (bios_size > 4096) {
94 hw_error("stage1 bootloader is > 4k\n");
98 kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL, NULL,
99 NULL, 1, ELF_MACHINE, 0);
100 if (kernel_size == -1UL) {
101 kernel_size = load_image_targphys(ipl->kernel, 0, ram_size);
103 if (kernel_size == -1UL) {
104 fprintf(stderr, "could not load kernel '%s'\n", ipl->kernel);
107 /* we have to overwrite values in the kernel image, which are "rom" */
108 strcpy(rom_ptr(KERN_PARM_AREA), ipl->cmdline);
111 * we can not rely on the ELF entry point, since up to 3.2 this
112 * value was 0x800 (the SALIPL loader) and it wont work. For
113 * all (Linux) cases 0x10000 (KERN_IMAGE_START) should be fine.
115 ipl->start_addr = KERN_IMAGE_START;
118 ram_addr_t initrd_offset, initrd_size;
120 initrd_offset = INITRD_START;
121 while (kernel_size + 0x100000 > initrd_offset) {
122 initrd_offset += 0x100000;
124 initrd_size = load_image_targphys(ipl->initrd, initrd_offset,
125 ram_size - initrd_offset);
126 if (initrd_size == -1UL) {
127 fprintf(stderr, "qemu: could not load initrd '%s'\n", ipl->initrd);
131 /* we have to overwrite values in the kernel image, which are "rom" */
132 stq_p(rom_ptr(INITRD_PARM_START), initrd_offset);
133 stq_p(rom_ptr(INITRD_PARM_SIZE), initrd_size);
139 static Property s390_ipl_properties[] = {
140 DEFINE_PROP_STRING("kernel", S390IPLState, kernel),
141 DEFINE_PROP_STRING("initrd", S390IPLState, initrd),
142 DEFINE_PROP_STRING("cmdline", S390IPLState, cmdline),
143 DEFINE_PROP_END_OF_LIST(),
146 static void s390_ipl_reset(DeviceState *dev)
148 S390IPLState *ipl = S390_IPL(dev);
150 s390_ipl_cpu(ipl->start_addr);
153 static void s390_ipl_class_init(ObjectClass *klass, void *data)
155 DeviceClass *dc = DEVICE_CLASS(klass);
156 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
158 k->init = s390_ipl_init;
159 dc->props = s390_ipl_properties;
160 dc->reset = s390_ipl_reset;
164 static const TypeInfo s390_ipl_info = {
165 .class_init = s390_ipl_class_init,
166 .parent = TYPE_SYS_BUS_DEVICE,
168 .instance_size = sizeof(S390IPLState),
171 static void s390_ipl_register_types(void)
173 type_register_static(&s390_ipl_info);
176 type_init(s390_ipl_register_types)