static void lx_init(const LxBoardDesc *board, MachineState *machine)
{
#ifdef TARGET_WORDS_BIGENDIAN
int be = 1;
#else
int be = 0;
#endif
MemoryRegion *system_memory = get_system_memory();
XtensaCPU *cpu = NULL;
CPUXtensaState *env = NULL;
MemoryRegion *ram, *rom, *system_io;
DriveInfo *dinfo;
pflash_t *flash = NULL;
QemuOpts *machine_opts = qemu_get_machine_opts();
const char *cpu_model = machine->cpu_model;
const char *kernel_filename = qemu_opt_get(machine_opts, "kernel");
const char *kernel_cmdline = qemu_opt_get(machine_opts, "append");
const char *dtb_filename = qemu_opt_get(machine_opts, "dtb");
const char *initrd_filename = qemu_opt_get(machine_opts, "initrd");
int n;
if (!cpu_model) {
cpu_model = XTENSA_DEFAULT_CPU_MODEL;
}
for (n = 0; n < smp_cpus; n++) {
cpu = cpu_xtensa_init(cpu_model);
if (cpu == NULL) {
error_report("unable to find CPU definition '%s'",
cpu_model);
exit(EXIT_FAILURE);
}
env = &cpu->env;
env->sregs[PRID] = n;
qemu_register_reset(lx60_reset, cpu);
/* Need MMU initialized prior to ELF loading,
* so that ELF gets loaded into virtual addresses
*/
cpu_reset(CPU(cpu));
}
ram = g_malloc(sizeof(*ram));
memory_region_init_ram(ram, NULL, "lx60.dram", machine->ram_size,
&error_fatal);
vmstate_register_ram_global(ram);
memory_region_add_subregion(system_memory, 0, ram);
system_io = g_malloc(sizeof(*system_io));
memory_region_init_io(system_io, NULL, &lx60_io_ops, NULL, "lx60.io",
224 * 1024 * 1024);
memory_region_add_subregion(system_memory, 0xf0000000, system_io);
lx60_fpga_init(system_io, 0x0d020000);
if (nd_table[0].used) {
lx60_net_init(system_io, 0x0d030000, 0x0d030400, 0x0d800000,
xtensa_get_extint(env, 1), nd_table);
}
if (!serial_hds[0]) {
serial_hds[0] = qemu_chr_new("serial0", "null", NULL);
}
serial_mm_init(system_io, 0x0d050020, 2, xtensa_get_extint(env, 0),
115200, serial_hds[0], DEVICE_NATIVE_ENDIAN);
dinfo = drive_get(IF_PFLASH, 0, 0);
if (dinfo) {
flash = xtfpga_flash_init(system_io, board, dinfo, be);
}
/* Use presence of kernel file name as 'boot from SRAM' switch. */
if (kernel_filename) {
uint32_t entry_point = env->pc;
size_t bp_size = 3 * get_tag_size(0); /* first/last and memory tags */
uint32_t tagptr = 0xfe000000 + board->sram_size;
uint32_t cur_tagptr;
BpMemInfo memory_location = {
.type = tswap32(MEMORY_TYPE_CONVENTIONAL),
.start = tswap32(0),
.end = tswap32(machine->ram_size),
};
uint32_t lowmem_end = machine->ram_size < 0x08000000 ?
machine->ram_size : 0x08000000;
uint32_t cur_lowmem = QEMU_ALIGN_UP(lowmem_end / 2, 4096);
rom = g_malloc(sizeof(*rom));
memory_region_init_ram(rom, NULL, "lx60.sram", board->sram_size,
&error_fatal);
vmstate_register_ram_global(rom);
memory_region_add_subregion(system_memory, 0xfe000000, rom);
if (kernel_cmdline) {
bp_size += get_tag_size(strlen(kernel_cmdline) + 1);
}
if (dtb_filename) {
bp_size += get_tag_size(sizeof(uint32_t));
}
if (initrd_filename) {
bp_size += get_tag_size(sizeof(BpMemInfo));
}
/* Put kernel bootparameters to the end of that SRAM */
tagptr = (tagptr - bp_size) & ~0xff;
cur_tagptr = put_tag(tagptr, BP_TAG_FIRST, 0, NULL);
cur_tagptr = put_tag(cur_tagptr, BP_TAG_MEMORY,
sizeof(memory_location), &memory_location);
if (kernel_cmdline) {
cur_tagptr = put_tag(cur_tagptr, BP_TAG_COMMAND_LINE,
strlen(kernel_cmdline) + 1, kernel_cmdline);
}
if (dtb_filename) {
int fdt_size;
void *fdt = load_device_tree(dtb_filename, &fdt_size);
uint32_t dtb_addr = tswap32(cur_lowmem);
if (!fdt) {
error_report("could not load DTB '%s'", dtb_filename);
exit(EXIT_FAILURE);
}
cpu_physical_memory_write(cur_lowmem, fdt, fdt_size);
cur_tagptr = put_tag(cur_tagptr, BP_TAG_FDT,
sizeof(dtb_addr), &dtb_addr);
cur_lowmem = QEMU_ALIGN_UP(cur_lowmem + fdt_size, 4096);
}
if (initrd_filename) {
BpMemInfo initrd_location = { 0 };
int initrd_size = load_ramdisk(initrd_filename, cur_lowmem,
lowmem_end - cur_lowmem);
if (initrd_size < 0) {
initrd_size = load_image_targphys(initrd_filename,
cur_lowmem,
lowmem_end - cur_lowmem);
}
if (initrd_size < 0) {
error_report("could not load initrd '%s'", initrd_filename);
exit(EXIT_FAILURE);
}
initrd_location.start = tswap32(cur_lowmem);
initrd_location.end = tswap32(cur_lowmem + initrd_size);
cur_tagptr = put_tag(cur_tagptr, BP_TAG_INITRD,
sizeof(initrd_location), &initrd_location);
cur_lowmem = QEMU_ALIGN_UP(cur_lowmem + initrd_size, 4096);
}
cur_tagptr = put_tag(cur_tagptr, BP_TAG_LAST, 0, NULL);
env->regs[2] = tagptr;
uint64_t elf_entry;
uint64_t elf_lowaddr;
int success = load_elf(kernel_filename, translate_phys_addr, cpu,
&elf_entry, &elf_lowaddr, NULL, be, EM_XTENSA, 0, 0);
if (success > 0) {
entry_point = elf_entry;
} else {
hwaddr ep;
int is_linux;
success = load_uimage(kernel_filename, &ep, NULL, &is_linux,
translate_phys_addr, cpu);
if (success > 0 && is_linux) {
entry_point = ep;
} else {
error_report("could not load kernel '%s'",
kernel_filename);
exit(EXIT_FAILURE);
}
}
if (entry_point != env->pc) {
static const uint8_t jx_a0[] = {
#ifdef TARGET_WORDS_BIGENDIAN
0x0a, 0, 0,
#else
0xa0, 0, 0,
#endif
};
env->regs[0] = entry_point;
cpu_physical_memory_write(env->pc, jx_a0, sizeof(jx_a0));
}
} else {
if (flash) {
MemoryRegion *flash_mr = pflash_cfi01_get_memory(flash);
MemoryRegion *flash_io = g_malloc(sizeof(*flash_io));
memory_region_init_alias(flash_io, NULL, "lx60.flash",
flash_mr, board->flash_boot_base,
board->flash_size - board->flash_boot_base < 0x02000000 ?
board->flash_size - board->flash_boot_base : 0x02000000);
memory_region_add_subregion(system_memory, 0xfe000000,
flash_io);
}
}
}
static void xtfpga_init(const XtfpgaBoardDesc *board, MachineState *machine)
{
#ifdef TARGET_WORDS_BIGENDIAN
int be = 1;
#else
int be = 0;
#endif
MemoryRegion *system_memory = get_system_memory();
XtensaCPU *cpu = NULL;
CPUXtensaState *env = NULL;
MemoryRegion *system_io;
DriveInfo *dinfo;
pflash_t *flash = NULL;
QemuOpts *machine_opts = qemu_get_machine_opts();
const char *kernel_filename = qemu_opt_get(machine_opts, "kernel");
const char *kernel_cmdline = qemu_opt_get(machine_opts, "append");
const char *dtb_filename = qemu_opt_get(machine_opts, "dtb");
const char *initrd_filename = qemu_opt_get(machine_opts, "initrd");
const unsigned system_io_size = 224 * 1024 * 1024;
int n;
for (n = 0; n < smp_cpus; n++) {
cpu = XTENSA_CPU(cpu_create(machine->cpu_type));
env = &cpu->env;
env->sregs[PRID] = n;
qemu_register_reset(xtfpga_reset, cpu);
/* Need MMU initialized prior to ELF loading,
* so that ELF gets loaded into virtual addresses
*/
cpu_reset(CPU(cpu));
}
if (env) {
XtensaMemory sysram = env->config->sysram;
sysram.location[0].size = machine->ram_size;
xtensa_create_memory_regions(&env->config->instrom, "xtensa.instrom",
system_memory);
xtensa_create_memory_regions(&env->config->instram, "xtensa.instram",
system_memory);
xtensa_create_memory_regions(&env->config->datarom, "xtensa.datarom",
system_memory);
xtensa_create_memory_regions(&env->config->dataram, "xtensa.dataram",
system_memory);
xtensa_create_memory_regions(&sysram, "xtensa.sysram",
system_memory);
}
system_io = g_malloc(sizeof(*system_io));
memory_region_init_io(system_io, NULL, &xtfpga_io_ops, NULL, "xtfpga.io",
system_io_size);
memory_region_add_subregion(system_memory, board->io[0], system_io);
if (board->io[1]) {
MemoryRegion *io = g_malloc(sizeof(*io));
memory_region_init_alias(io, NULL, "xtfpga.io.cached",
system_io, 0, system_io_size);
memory_region_add_subregion(system_memory, board->io[1], io);
}
xtfpga_fpga_init(system_io, 0x0d020000);
if (nd_table[0].used) {
xtfpga_net_init(system_io, 0x0d030000, 0x0d030400, 0x0d800000,
xtensa_get_extint(env, 1), nd_table);
}
if (!serial_hds[0]) {
serial_hds[0] = qemu_chr_new("serial0", "null");
}
serial_mm_init(system_io, 0x0d050020, 2, xtensa_get_extint(env, 0),
115200, serial_hds[0], DEVICE_NATIVE_ENDIAN);
dinfo = drive_get(IF_PFLASH, 0, 0);
if (dinfo) {
flash = xtfpga_flash_init(system_io, board, dinfo, be);
}
/* Use presence of kernel file name as 'boot from SRAM' switch. */
if (kernel_filename) {
uint32_t entry_point = env->pc;
size_t bp_size = 3 * get_tag_size(0); /* first/last and memory tags */
uint32_t tagptr = env->config->sysrom.location[0].addr +
board->sram_size;
uint32_t cur_tagptr;
BpMemInfo memory_location = {
.type = tswap32(MEMORY_TYPE_CONVENTIONAL),
.start = tswap32(env->config->sysram.location[0].addr),
.end = tswap32(env->config->sysram.location[0].addr +
machine->ram_size),
};
uint32_t lowmem_end = machine->ram_size < 0x08000000 ?
machine->ram_size : 0x08000000;
uint32_t cur_lowmem = QEMU_ALIGN_UP(lowmem_end / 2, 4096);
lowmem_end += env->config->sysram.location[0].addr;
cur_lowmem += env->config->sysram.location[0].addr;
xtensa_create_memory_regions(&env->config->sysrom, "xtensa.sysrom",
system_memory);
if (kernel_cmdline) {
bp_size += get_tag_size(strlen(kernel_cmdline) + 1);
}
if (dtb_filename) {
bp_size += get_tag_size(sizeof(uint32_t));
}
if (initrd_filename) {
bp_size += get_tag_size(sizeof(BpMemInfo));
}
/* Put kernel bootparameters to the end of that SRAM */
tagptr = (tagptr - bp_size) & ~0xff;
cur_tagptr = put_tag(tagptr, BP_TAG_FIRST, 0, NULL);
cur_tagptr = put_tag(cur_tagptr, BP_TAG_MEMORY,
sizeof(memory_location), &memory_location);
if (kernel_cmdline) {
cur_tagptr = put_tag(cur_tagptr, BP_TAG_COMMAND_LINE,
strlen(kernel_cmdline) + 1, kernel_cmdline);
}
#ifdef CONFIG_FDT
if (dtb_filename) {
int fdt_size;
void *fdt = load_device_tree(dtb_filename, &fdt_size);
uint32_t dtb_addr = tswap32(cur_lowmem);
if (!fdt) {
error_report("could not load DTB '%s'", dtb_filename);
exit(EXIT_FAILURE);
}
cpu_physical_memory_write(cur_lowmem, fdt, fdt_size);
cur_tagptr = put_tag(cur_tagptr, BP_TAG_FDT,
sizeof(dtb_addr), &dtb_addr);
cur_lowmem = QEMU_ALIGN_UP(cur_lowmem + fdt_size, 4096);
}
#else
if (dtb_filename) {
error_report("could not load DTB '%s': "
"FDT support is not configured in QEMU",
dtb_filename);
exit(EXIT_FAILURE);
}
#endif
if (initrd_filename) {
BpMemInfo initrd_location = { 0 };
int initrd_size = load_ramdisk(initrd_filename, cur_lowmem,
lowmem_end - cur_lowmem);
if (initrd_size < 0) {
initrd_size = load_image_targphys(initrd_filename,
cur_lowmem,
lowmem_end - cur_lowmem);
}
if (initrd_size < 0) {
error_report("could not load initrd '%s'", initrd_filename);
exit(EXIT_FAILURE);
}
initrd_location.start = tswap32(cur_lowmem);
initrd_location.end = tswap32(cur_lowmem + initrd_size);
cur_tagptr = put_tag(cur_tagptr, BP_TAG_INITRD,
sizeof(initrd_location), &initrd_location);
cur_lowmem = QEMU_ALIGN_UP(cur_lowmem + initrd_size, 4096);
}
cur_tagptr = put_tag(cur_tagptr, BP_TAG_LAST, 0, NULL);
env->regs[2] = tagptr;
uint64_t elf_entry;
uint64_t elf_lowaddr;
int success = load_elf(kernel_filename, translate_phys_addr, cpu,
&elf_entry, &elf_lowaddr, NULL, be, EM_XTENSA, 0, 0);
if (success > 0) {
entry_point = elf_entry;
} else {
hwaddr ep;
int is_linux;
success = load_uimage(kernel_filename, &ep, NULL, &is_linux,
translate_phys_addr, cpu);
if (success > 0 && is_linux) {
entry_point = ep;
} else {
error_report("could not load kernel '%s'",
kernel_filename);
exit(EXIT_FAILURE);
}
}
if (entry_point != env->pc) {
uint8_t boot[] = {
#ifdef TARGET_WORDS_BIGENDIAN
0x60, 0x00, 0x08, /* j 1f */
0x00, /* .literal_position */
0x00, 0x00, 0x00, 0x00, /* .literal entry_pc */
0x00, 0x00, 0x00, 0x00, /* .literal entry_a2 */
/* 1: */
0x10, 0xff, 0xfe, /* l32r a0, entry_pc */
0x12, 0xff, 0xfe, /* l32r a2, entry_a2 */
0x0a, 0x00, 0x00, /* jx a0 */
#else
0x06, 0x02, 0x00, /* j 1f */
0x00, /* .literal_position */
0x00, 0x00, 0x00, 0x00, /* .literal entry_pc */
0x00, 0x00, 0x00, 0x00, /* .literal entry_a2 */
/* 1: */
0x01, 0xfe, 0xff, /* l32r a0, entry_pc */
0x21, 0xfe, 0xff, /* l32r a2, entry_a2 */
0xa0, 0x00, 0x00, /* jx a0 */
#endif
};
uint32_t entry_pc = tswap32(entry_point);
uint32_t entry_a2 = tswap32(tagptr);
memcpy(boot + 4, &entry_pc, sizeof(entry_pc));
memcpy(boot + 8, &entry_a2, sizeof(entry_a2));
cpu_physical_memory_write(env->pc, boot, sizeof(boot));
}
} else {
if (flash) {
MemoryRegion *flash_mr = pflash_cfi01_get_memory(flash);
MemoryRegion *flash_io = g_malloc(sizeof(*flash_io));
uint32_t size = env->config->sysrom.location[0].size;
if (board->flash->size - board->flash->boot_base < size) {
size = board->flash->size - board->flash->boot_base;
}
memory_region_init_alias(flash_io, NULL, "xtfpga.flash",
flash_mr, board->flash->boot_base, size);
memory_region_add_subregion(system_memory,
env->config->sysrom.location[0].addr,
flash_io);
} else {
xtensa_create_memory_regions(&env->config->sysrom, "xtensa.sysrom",
system_memory);
}
}
}