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);
g_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);
g_free(fdt);
out:
#endif
return ret;
}
static void *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)
{
void *fdt = NULL;
#ifdef HAVE_FDT
uint32_t mem_reg_property[] = { 0, 0, ramsize };
char *path;
int fdt_size;
int pathlen;
int ret;
pathlen = snprintf(NULL, 0, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE) + 1;
path = qemu_malloc(pathlen);
snprintf(path, pathlen, "%s/%s", bios_dir, BINARY_DEVICE_TREE_FILE);
fdt = load_device_tree(path, &fdt_size);
free(path);
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);
cpu_physical_memory_write (addr, (void *)fdt, fdt_size);
out:
#endif
return fdt;
}
int qemu_devtree_setprop_phandle(void *fdt, const char *node_path,
const char *property,
const char *target_node_path)
{
uint32_t phandle = qemu_devtree_get_phandle(fdt, target_node_path);
return qemu_devtree_setprop_cell(fdt, node_path, property, phandle);
}
static void dt_serial_create(void *fdt, unsigned long long offset,
const char *soc, const char *mpic,
const char *alias, int idx, bool defcon)
{
char ser[128];
snprintf(ser, sizeof(ser), "%s/serial@%llx", soc, offset);
qemu_devtree_add_subnode(fdt, ser);
qemu_devtree_setprop_string(fdt, ser, "device_type", "serial");
qemu_devtree_setprop_string(fdt, ser, "compatible", "ns16550");
qemu_devtree_setprop_cells(fdt, ser, "reg", offset, 0x100);
qemu_devtree_setprop_cell(fdt, ser, "cell-index", idx);
qemu_devtree_setprop_cell(fdt, ser, "clock-frequency", 0);
qemu_devtree_setprop_cells(fdt, ser, "interrupts", 42, 2);
qemu_devtree_setprop_phandle(fdt, ser, "interrupt-parent", mpic);
qemu_devtree_setprop_string(fdt, "/aliases", alias, ser);
if (defcon) {
qemu_devtree_setprop_string(fdt, "/chosen", "linux,stdout-path", ser);
}
}
static int kvmppc_copy_host_cell(void *fdt, const char *node, const char *prop)
{
uint32_t cell;
int ret;
ret = kvmppc_read_host_property(node, prop, &cell, sizeof(cell));
if (ret < 0) {
fprintf(stderr, "couldn't read host %s/%s\n", node, prop);
goto out;
}
ret = qemu_devtree_setprop_cell(fdt, node, prop, cell);
if (ret < 0) {
fprintf(stderr, "couldn't set guest %s/%s\n", node, prop);
goto out;
}
out:
return ret;
}
static int mpc8544_load_device_tree(CPUPPCState *env,
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, cpu_to_be32(ramsize)};
char *filename;
int fdt_size;
void *fdt;
uint8_t hypercall[16];
uint32_t clock_freq = 400000000;
uint32_t tb_freq = 400000000;
int i;
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
if (!filename) {
goto out;
}
fdt = load_device_tree(filename, &fdt_size);
g_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");
if (initrd_size) {
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()) {
/* Read out host's frequencies */
clock_freq = kvmppc_get_clockfreq();
tb_freq = kvmppc_get_tbfreq();
/* indicate KVM hypercall interface */
qemu_devtree_setprop_string(fdt, "/hypervisor", "compatible",
"linux,kvm");
kvmppc_get_hypercall(env, hypercall, sizeof(hypercall));
qemu_devtree_setprop(fdt, "/hypervisor", "hcall-instructions",
hypercall, sizeof(hypercall));
}
/* We need to generate the cpu nodes in reverse order, so Linux can pick
the first node as boot node and be happy */
for (i = smp_cpus - 1; i >= 0; i--) {
char cpu_name[128];
uint64_t cpu_release_addr = cpu_to_be64(MPC8544_SPIN_BASE + (i * 0x20));
for (env = first_cpu; env != NULL; env = env->next_cpu) {
if (env->cpu_index == i) {
break;
}
}
if (!env) {
continue;
}
snprintf(cpu_name, sizeof(cpu_name), "/cpus/PowerPC,8544@%x", env->cpu_index);
qemu_devtree_add_subnode(fdt, cpu_name);
qemu_devtree_setprop_cell(fdt, cpu_name, "clock-frequency", clock_freq);
qemu_devtree_setprop_cell(fdt, cpu_name, "timebase-frequency", tb_freq);
qemu_devtree_setprop_string(fdt, cpu_name, "device_type", "cpu");
qemu_devtree_setprop_cell(fdt, cpu_name, "reg", env->cpu_index);
qemu_devtree_setprop_cell(fdt, cpu_name, "d-cache-line-size",
env->dcache_line_size);
qemu_devtree_setprop_cell(fdt, cpu_name, "i-cache-line-size",
env->icache_line_size);
qemu_devtree_setprop_cell(fdt, cpu_name, "d-cache-size", 0x8000);
qemu_devtree_setprop_cell(fdt, cpu_name, "i-cache-size", 0x8000);
qemu_devtree_setprop_cell(fdt, cpu_name, "bus-frequency", 0);
if (env->cpu_index) {
qemu_devtree_setprop_string(fdt, cpu_name, "status", "disabled");
qemu_devtree_setprop_string(fdt, cpu_name, "enable-method", "spin-table");
qemu_devtree_setprop(fdt, cpu_name, "cpu-release-addr",
&cpu_release_addr, sizeof(cpu_release_addr));
} else {
qemu_devtree_setprop_string(fdt, cpu_name, "status", "okay");
}
}
ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
g_free(fdt);
out:
#endif
return ret;
}
static int ppce500_load_device_tree(CPUPPCState *env,
PPCE500Params *params,
hwaddr addr,
hwaddr initrd_base,
hwaddr initrd_size)
{
int ret = -1;
uint64_t mem_reg_property[] = { 0, cpu_to_be64(params->ram_size) };
int fdt_size;
void *fdt;
uint8_t hypercall[16];
uint32_t clock_freq = 400000000;
uint32_t tb_freq = 400000000;
int i;
const char *toplevel_compat = NULL; /* user override */
char compatible_sb[] = "fsl,mpc8544-immr\0simple-bus";
char soc[128];
char mpic[128];
uint32_t mpic_ph;
uint32_t msi_ph;
char gutil[128];
char pci[128];
char msi[128];
uint32_t *pci_map = NULL;
int len;
uint32_t pci_ranges[14] =
{
0x2000000, 0x0, 0xc0000000,
0x0, 0xc0000000,
0x0, 0x20000000,
0x1000000, 0x0, 0x0,
0x0, 0xe1000000,
0x0, 0x10000,
};
QemuOpts *machine_opts;
const char *dtb_file = NULL;
machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
if (machine_opts) {
dtb_file = qemu_opt_get(machine_opts, "dtb");
toplevel_compat = qemu_opt_get(machine_opts, "dt_compatible");
}
if (dtb_file) {
char *filename;
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, dtb_file);
if (!filename) {
goto out;
}
fdt = load_device_tree(filename, &fdt_size);
if (!fdt) {
goto out;
}
goto done;
}
fdt = create_device_tree(&fdt_size);
if (fdt == NULL) {
goto out;
}
/* Manipulate device tree in memory. */
qemu_devtree_setprop_cell(fdt, "/", "#address-cells", 2);
qemu_devtree_setprop_cell(fdt, "/", "#size-cells", 2);
qemu_devtree_add_subnode(fdt, "/memory");
qemu_devtree_setprop_string(fdt, "/memory", "device_type", "memory");
qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property,
sizeof(mem_reg_property));
qemu_devtree_add_subnode(fdt, "/chosen");
if (initrd_size) {
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",
params->kernel_cmdline);
if (ret < 0)
fprintf(stderr, "couldn't set /chosen/bootargs\n");
if (kvm_enabled()) {
/* Read out host's frequencies */
clock_freq = kvmppc_get_clockfreq();
tb_freq = kvmppc_get_tbfreq();
/* indicate KVM hypercall interface */
qemu_devtree_add_subnode(fdt, "/hypervisor");
qemu_devtree_setprop_string(fdt, "/hypervisor", "compatible",
"linux,kvm");
kvmppc_get_hypercall(env, hypercall, sizeof(hypercall));
qemu_devtree_setprop(fdt, "/hypervisor", "hcall-instructions",
hypercall, sizeof(hypercall));
}
/* Create CPU nodes */
qemu_devtree_add_subnode(fdt, "/cpus");
qemu_devtree_setprop_cell(fdt, "/cpus", "#address-cells", 1);
qemu_devtree_setprop_cell(fdt, "/cpus", "#size-cells", 0);
/* We need to generate the cpu nodes in reverse order, so Linux can pick
the first node as boot node and be happy */
for (i = smp_cpus - 1; i >= 0; i--) {
char cpu_name[128];
uint64_t cpu_release_addr = MPC8544_SPIN_BASE + (i * 0x20);
for (env = first_cpu; env != NULL; env = env->next_cpu) {
if (env->cpu_index == i) {
break;
}
}
if (!env) {
continue;
}
snprintf(cpu_name, sizeof(cpu_name), "/cpus/PowerPC,8544@%x", env->cpu_index);
qemu_devtree_add_subnode(fdt, cpu_name);
qemu_devtree_setprop_cell(fdt, cpu_name, "clock-frequency", clock_freq);
qemu_devtree_setprop_cell(fdt, cpu_name, "timebase-frequency", tb_freq);
qemu_devtree_setprop_string(fdt, cpu_name, "device_type", "cpu");
qemu_devtree_setprop_cell(fdt, cpu_name, "reg", env->cpu_index);
qemu_devtree_setprop_cell(fdt, cpu_name, "d-cache-line-size",
env->dcache_line_size);
qemu_devtree_setprop_cell(fdt, cpu_name, "i-cache-line-size",
env->icache_line_size);
qemu_devtree_setprop_cell(fdt, cpu_name, "d-cache-size", 0x8000);
qemu_devtree_setprop_cell(fdt, cpu_name, "i-cache-size", 0x8000);
qemu_devtree_setprop_cell(fdt, cpu_name, "bus-frequency", 0);
if (env->cpu_index) {
qemu_devtree_setprop_string(fdt, cpu_name, "status", "disabled");
qemu_devtree_setprop_string(fdt, cpu_name, "enable-method", "spin-table");
qemu_devtree_setprop_u64(fdt, cpu_name, "cpu-release-addr",
cpu_release_addr);
} else {
qemu_devtree_setprop_string(fdt, cpu_name, "status", "okay");
}
}
qemu_devtree_add_subnode(fdt, "/aliases");
/* XXX These should go into their respective devices' code */
snprintf(soc, sizeof(soc), "/soc@%llx", MPC8544_CCSRBAR_BASE);
qemu_devtree_add_subnode(fdt, soc);
qemu_devtree_setprop_string(fdt, soc, "device_type", "soc");
qemu_devtree_setprop(fdt, soc, "compatible", compatible_sb,
sizeof(compatible_sb));
qemu_devtree_setprop_cell(fdt, soc, "#address-cells", 1);
qemu_devtree_setprop_cell(fdt, soc, "#size-cells", 1);
qemu_devtree_setprop_cells(fdt, soc, "ranges", 0x0,
MPC8544_CCSRBAR_BASE >> 32, MPC8544_CCSRBAR_BASE,
MPC8544_CCSRBAR_SIZE);
/* XXX should contain a reasonable value */
qemu_devtree_setprop_cell(fdt, soc, "bus-frequency", 0);
snprintf(mpic, sizeof(mpic), "%s/pic@%llx", soc, MPC8544_MPIC_REGS_OFFSET);
qemu_devtree_add_subnode(fdt, mpic);
qemu_devtree_setprop_string(fdt, mpic, "device_type", "open-pic");
qemu_devtree_setprop_string(fdt, mpic, "compatible", "chrp,open-pic");
qemu_devtree_setprop_cells(fdt, mpic, "reg", MPC8544_MPIC_REGS_OFFSET,
0x40000);
qemu_devtree_setprop_cell(fdt, mpic, "#address-cells", 0);
qemu_devtree_setprop_cell(fdt, mpic, "#interrupt-cells", 2);
mpic_ph = qemu_devtree_alloc_phandle(fdt);
qemu_devtree_setprop_cell(fdt, mpic, "phandle", mpic_ph);
qemu_devtree_setprop_cell(fdt, mpic, "linux,phandle", mpic_ph);
qemu_devtree_setprop(fdt, mpic, "interrupt-controller", NULL, 0);
/*
* We have to generate ser1 first, because Linux takes the first
* device it finds in the dt as serial output device. And we generate
* devices in reverse order to the dt.
*/
dt_serial_create(fdt, MPC8544_SERIAL1_REGS_OFFSET,
soc, mpic, "serial1", 1, false);
dt_serial_create(fdt, MPC8544_SERIAL0_REGS_OFFSET,
soc, mpic, "serial0", 0, true);
snprintf(gutil, sizeof(gutil), "%s/global-utilities@%llx", soc,
MPC8544_UTIL_OFFSET);
qemu_devtree_add_subnode(fdt, gutil);
qemu_devtree_setprop_string(fdt, gutil, "compatible", "fsl,mpc8544-guts");
qemu_devtree_setprop_cells(fdt, gutil, "reg", MPC8544_UTIL_OFFSET, 0x1000);
qemu_devtree_setprop(fdt, gutil, "fsl,has-rstcr", NULL, 0);
snprintf(msi, sizeof(msi), "/%s/msi@%llx", soc, MPC8544_MSI_REGS_OFFSET);
qemu_devtree_add_subnode(fdt, msi);
qemu_devtree_setprop_string(fdt, msi, "compatible", "fsl,mpic-msi");
qemu_devtree_setprop_cells(fdt, msi, "reg", MPC8544_MSI_REGS_OFFSET, 0x200);
msi_ph = qemu_devtree_alloc_phandle(fdt);
qemu_devtree_setprop_cells(fdt, msi, "msi-available-ranges", 0x0, 0x100);
qemu_devtree_setprop_phandle(fdt, msi, "interrupt-parent", mpic);
qemu_devtree_setprop_cells(fdt, msi, "interrupts",
0xe0, 0x0,
0xe1, 0x0,
0xe2, 0x0,
0xe3, 0x0,
0xe4, 0x0,
0xe5, 0x0,
0xe6, 0x0,
0xe7, 0x0);
qemu_devtree_setprop_cell(fdt, msi, "phandle", msi_ph);
qemu_devtree_setprop_cell(fdt, msi, "linux,phandle", msi_ph);
snprintf(pci, sizeof(pci), "/pci@%llx", MPC8544_PCI_REGS_BASE);
qemu_devtree_add_subnode(fdt, pci);
qemu_devtree_setprop_cell(fdt, pci, "cell-index", 0);
qemu_devtree_setprop_string(fdt, pci, "compatible", "fsl,mpc8540-pci");
qemu_devtree_setprop_string(fdt, pci, "device_type", "pci");
qemu_devtree_setprop_cells(fdt, pci, "interrupt-map-mask", 0xf800, 0x0,
0x0, 0x7);
pci_map = pci_map_create(fdt, qemu_devtree_get_phandle(fdt, mpic),
params->pci_first_slot, params->pci_nr_slots,
&len);
qemu_devtree_setprop(fdt, pci, "interrupt-map", pci_map, len);
qemu_devtree_setprop_phandle(fdt, pci, "interrupt-parent", mpic);
qemu_devtree_setprop_cells(fdt, pci, "interrupts", 24, 2);
qemu_devtree_setprop_cells(fdt, pci, "bus-range", 0, 255);
for (i = 0; i < 14; i++) {
pci_ranges[i] = cpu_to_be32(pci_ranges[i]);
}
qemu_devtree_setprop_cell(fdt, pci, "fsl,msi", msi_ph);
qemu_devtree_setprop(fdt, pci, "ranges", pci_ranges, sizeof(pci_ranges));
qemu_devtree_setprop_cells(fdt, pci, "reg", MPC8544_PCI_REGS_BASE >> 32,
MPC8544_PCI_REGS_BASE, 0, 0x1000);
qemu_devtree_setprop_cell(fdt, pci, "clock-frequency", 66666666);
qemu_devtree_setprop_cell(fdt, pci, "#interrupt-cells", 1);
qemu_devtree_setprop_cell(fdt, pci, "#size-cells", 2);
qemu_devtree_setprop_cell(fdt, pci, "#address-cells", 3);
qemu_devtree_setprop_string(fdt, "/aliases", "pci0", pci);
params->fixup_devtree(params, fdt);
if (toplevel_compat) {
qemu_devtree_setprop(fdt, "/", "compatible", toplevel_compat,
strlen(toplevel_compat) + 1);
}
done:
qemu_devtree_dumpdtb(fdt, fdt_size);
ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
if (ret < 0) {
goto out;
}
g_free(fdt);
ret = fdt_size;
out:
g_free(pci_map);
return ret;
}
static int mpc8544_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, 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()) {
struct dirent *dirp;
DIR *dp;
char buf[128];
if ((dp = opendir("/proc/device-tree/cpus/")) == NULL) {
printf("Can't open directory /proc/device-tree/cpus/\n");
ret = -1;
goto out;
}
buf[0] = '\0';
while ((dirp = readdir(dp)) != NULL) {
if (strncmp(dirp->d_name, "PowerPC", 7) == 0) {
snprintf(buf, 128, "/cpus/%s", dirp->d_name);
break;
}
}
closedir(dp);
if (buf[0] == '\0') {
printf("Unknow host!\n");
ret = -1;
goto out;
}
mpc8544_copy_soc_cell(fdt, buf, "clock-frequency");
mpc8544_copy_soc_cell(fdt, buf, "timebase-frequency");
}
ret = rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
qemu_free(fdt);
out:
#endif
return ret;
}
static int bamboo_load_device_tree(hwaddr addr,
uint32_t ramsize,
hwaddr initrd_base,
hwaddr initrd_size,
const char *kernel_cmdline)
{
int ret = -1;
uint32_t mem_reg_property[] = { 0, 0, cpu_to_be32(ramsize) };
char *filename;
int fdt_size;
void *fdt;
uint32_t tb_freq = 400000000;
uint32_t clock_freq = 400000000;
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, BINARY_DEVICE_TREE_FILE);
if (!filename) {
goto out;
}
fdt = load_device_tree(filename, &fdt_size);
g_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");
/* Copy data from the host device tree into the guest. Since the guest can
* directly access the timebase without host involvement, we must expose
* the correct frequencies. */
if (kvm_enabled()) {
tb_freq = kvmppc_get_tbfreq();
clock_freq = kvmppc_get_clockfreq();
}
qemu_devtree_setprop_cell(fdt, "/cpus/cpu@0", "clock-frequency",
clock_freq);
qemu_devtree_setprop_cell(fdt, "/cpus/cpu@0", "timebase-frequency",
tb_freq);
rom_add_blob_fixed(BINARY_DEVICE_TREE_FILE, fdt, fdt_size, addr);
g_free(fdt);
return 0;
out:
return ret;
}