struct data data_append_re(struct data d, const struct fdt_reserve_entry *re)
{
struct fdt_reserve_entry bere;
bere.address = cpu_to_fdt64(re->address);
bere.size = cpu_to_fdt64(re->size);
return data_append_data(d, &bere, sizeof(bere));
}
static int ft_hs_fixup_dram(void *fdt, bd_t *bd)
{
const char *path, *subpath;
int offs;
u32 sec_mem_start = CONFIG_TI_SECURE_EMIF_REGION_START;
u32 sec_mem_size = CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE;
fdt64_t temp[2];
/* If start address is zero, place at end of DRAM */
if (0 == sec_mem_start)
sec_mem_start =
(CONFIG_SYS_SDRAM_BASE +
(omap_sdram_size() - sec_mem_size));
/* Delete any original secure_reserved node */
path = "/reserved-memory/secure_reserved";
offs = fdt_path_offset(fdt, path);
if (offs >= 0)
fdt_del_node(fdt, offs);
/* Add new secure_reserved node */
path = "/reserved-memory";
offs = fdt_path_offset(fdt, path);
if (offs < 0) {
debug("Node %s not found\n", path);
path = "/";
subpath = "reserved-memory";
fdt_path_offset(fdt, path);
offs = fdt_add_subnode(fdt, offs, subpath);
if (offs < 0) {
printf("Could not create %s%s node.\n", path, subpath);
return 1;
}
path = "/reserved-memory";
offs = fdt_path_offset(fdt, path);
}
subpath = "secure_reserved";
offs = fdt_add_subnode(fdt, offs, subpath);
if (offs < 0) {
printf("Could not create %s%s node.\n", path, subpath);
return 1;
}
temp[0] = cpu_to_fdt64(((u64)sec_mem_start));
temp[1] = cpu_to_fdt64(((u64)sec_mem_size));
fdt_setprop_string(fdt, offs, "compatible",
"ti,dra7-secure-memory");
fdt_setprop_string(fdt, offs, "status", "okay");
fdt_setprop(fdt, offs, "no-map", NULL, 0);
fdt_setprop(fdt, offs, "reg", temp, sizeof(temp));
return 0;
}
struct data data_append_integer(struct data d, uint64_t value, int bits)
{
uint8_t value_8;
uint16_t value_16;
uint32_t value_32;
uint64_t value_64;
switch (bits) {
case 8:
value_8 = value;
return data_append_data(d, &value_8, 1);
case 16:
value_16 = cpu_to_fdt16(value);
return data_append_data(d, &value_16, 2);
case 32:
value_32 = cpu_to_fdt32(value);
return data_append_data(d, &value_32, 4);
case 64:
value_64 = cpu_to_fdt64(value);
return data_append_data(d, &value_64, 8);
default:
die("Invalid literal size (%d)\n", bits);
}
}
static void trace_add_dt_props(void)
{
unsigned int i;
u64 *prop, tmask;
prop = malloc(sizeof(u64) * 2 * debug_descriptor.num_traces);
for (i = 0; i < debug_descriptor.num_traces; i++) {
prop[i * 2] = cpu_to_fdt64(debug_descriptor.trace_phys[i]);
prop[i * 2 + 1] = cpu_to_fdt64(debug_descriptor.trace_size[i]);
}
dt_add_property(opal_node, "ibm,opal-traces",
prop, sizeof(u64) * 2 * i);
free(prop);
tmask = (uint64_t)&debug_descriptor.trace_mask;
dt_add_property_cells(opal_node, "ibm,opal-trace-mask",
hi32(tmask), lo32(tmask));
}
/*
* Replace a reserve map entry in the nth slot.
*/
int fdt_replace_reservemap_entry(void *fdt, int n, uint64_t addr, uint64_t size)
{
struct fdt_reserve_entry *re;
int used;
int total;
int err;
err = fdt_num_reservemap(fdt, &used, &total);
if (err != 0)
return err;
if (n >= total)
return -FDT_ERR_NOSPACE;
re = (struct fdt_reserve_entry *)
(fdt + fdt_off_mem_rsvmap(fdt) +
(n * sizeof(struct fdt_reserve_entry)));
re->address = cpu_to_fdt64(addr);
re->size = cpu_to_fdt64(size);
return 0;
}
int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size)
{
struct fdt_reserve_entry *re;
unsigned int offset;
FDT_SW_CHECK_HEADER(fdt);
if (fdt_size_dt_struct(fdt))
return -FDT_ERR_BADSTATE;
offset = fdt_off_dt_struct(fdt);
if ((offset + sizeof(*re)) > fdt_totalsize(fdt))
return -FDT_ERR_NOSPACE;
re = (struct fdt_reserve_entry *)((char *)fdt + offset);
re->address = cpu_to_fdt64(addr);
re->size = cpu_to_fdt64(size);
fdt_set_off_dt_struct(fdt, offset + sizeof(*re));
return 0;
}
static void generate_virtio_mmio_node(void *fdt, struct virtio_mmio *vmmio)
{
char dev_name[DEVICE_NAME_MAX_LEN];
u64 addr = vmmio->addr;
u64 reg_prop[] = {
cpu_to_fdt64(addr),
cpu_to_fdt64(VIRTIO_MMIO_IO_SIZE)
};
u32 irq_prop[] = {
cpu_to_fdt32(GIC_FDT_IRQ_TYPE_SPI),
cpu_to_fdt32(vmmio->irq - GIC_SPI_IRQ_BASE),
cpu_to_fdt32(GIC_FDT_IRQ_FLAGS_EDGE_LO_HI),
};
snprintf(dev_name, DEVICE_NAME_MAX_LEN, "virtio@%llx", addr);
_FDT(fdt_begin_node(fdt, dev_name));
_FDT(fdt_property_string(fdt, "compatible", "virtio,mmio"));
_FDT(fdt_property(fdt, "reg", reg_prop, sizeof(reg_prop)));
_FDT(fdt_property(fdt, "interrupts", irq_prop, sizeof(irq_prop)));
_FDT(fdt_end_node(fdt));
}
int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size)
{
struct fdt_reserve_entry *re;
int err = check_header_sw(fdt);
int offset;
if (err)
return err;
if (fdt_size_dt_struct(fdt))
return -FDT_ERR_BADSTATE;
offset = fdt_off_dt_struct(fdt);
if ((offset + sizeof(*re)) > fdt_totalsize(fdt))
return -FDT_ERR_NOSPACE;
re = (struct fdt_reserve_entry *)(fdt + offset);
re->address = cpu_to_fdt64(addr);
re->size = cpu_to_fdt64(size);
fdt_set_off_dt_struct(fdt, offset + sizeof(*re));
return 0;
}
/*
* fdt_pack_reg - pack address and size array into the "reg"-suitable stream
*/
static int fdt_pack_reg(const void *fdt, void *buf, u64 *address, u64 *size,
int n)
{
int i;
int address_cells = fdt_address_cells(fdt, 0);
int size_cells = fdt_size_cells(fdt, 0);
char *p = buf;
for (i = 0; i < n; i++) {
if (address_cells == 2)
*(fdt64_t *)p = cpu_to_fdt64(address[i]);
else
*(fdt32_t *)p = cpu_to_fdt32(address[i]);
p += 4 * address_cells;
if (size_cells == 2)
*(fdt64_t *)p = cpu_to_fdt64(size[i]);
else
*(fdt32_t *)p = cpu_to_fdt32(size[i]);
p += 4 * size_cells;
}
return p - (char *)buf;
}
void ft_fixup_cpu(void *blob)
{
int off;
__maybe_unused u64 spin_tbl_addr = (u64)get_spin_tbl_addr();
fdt32_t *reg;
int addr_cells;
u64 val, core_id;
size_t *boot_code_size = &(__secondary_boot_code_size);
off = fdt_path_offset(blob, "/cpus");
if (off < 0) {
puts("couldn't find /cpus node\n");
return;
}
of_bus_default_count_cells(blob, off, &addr_cells, NULL);
off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
while (off != -FDT_ERR_NOTFOUND) {
reg = (fdt32_t *)fdt_getprop(blob, off, "reg", 0);
core_id = of_read_number(reg, addr_cells);
if (reg) {
if (core_id == 0 || (is_core_online(core_id))) {
val = spin_tbl_addr;
val += id_to_core(core_id) *
SPIN_TABLE_ELEM_SIZE;
val = cpu_to_fdt64(val);
fdt_setprop_string(blob, off, "enable-method",
"spin-table");
fdt_setprop(blob, off, "cpu-release-addr",
&val, sizeof(val));
} else {
debug("skipping offline core\n");
}
} else {
puts("Warning: found cpu node without reg property\n");
}
off = fdt_node_offset_by_prop_value(blob, off, "device_type",
"cpu", 4);
}
fdt_add_mem_rsv(blob, (uintptr_t)&secondary_boot_code,
*boot_code_size);
}
/*
* Convert and fold provided ATAGs into the provided FDT.
*
* REturn values:
* = 0 -> pretend success
* = 1 -> bad ATAG (may retry with another possible ATAG pointer)
* < 0 -> error from libfdt
*/
int atags_to_fdt(void *atag_list, void *fdt, int total_space)
{
struct tag *atag = atag_list;
/* In the case of 64 bits memory size, need to reserve 2 cells for
* address and size for each bank */
uint32_t mem_reg_property[2 * 2 * NR_BANKS];
int memcount = 0;
int ret, memsize;
/* make sure we've got an aligned pointer */
if ((u32)atag_list & 0x3)
return 1;
/* if we get a DTB here we're done already */
if (*(u32 *)atag_list == fdt32_to_cpu(FDT_MAGIC))
return 0;
/* validate the ATAG */
if (atag->hdr.tag != ATAG_CORE ||
(atag->hdr.size != tag_size(tag_core) &&
atag->hdr.size != 2))
return 1;
/* let's give it all the room it could need */
ret = fdt_open_into(fdt, fdt, total_space);
if (ret < 0)
return ret;
for_each_tag(atag, atag_list) {
if (atag->hdr.tag == ATAG_CMDLINE) {
/* Append the ATAGS command line to the device tree
* command line.
* NB: This means that if the same parameter is set in
* the device tree and in the tags, the one from the
* tags will be chosen.
*/
if (do_extend_cmdline)
merge_fdt_bootargs(fdt,
atag->u.cmdline.cmdline);
else
setprop_string(fdt, "/chosen", "bootargs",
atag->u.cmdline.cmdline);
} else if (atag->hdr.tag == ATAG_MEM) {
if (memcount >= sizeof(mem_reg_property)/4)
continue;
if (!atag->u.mem.size)
continue;
memsize = get_cell_size(fdt);
if (memsize == 2) {
/* if memsize is 2, that means that
* each data needs 2 cells of 32 bits,
* so the data are 64 bits */
uint64_t *mem_reg_prop64 =
(uint64_t *)mem_reg_property;
mem_reg_prop64[memcount++] =
cpu_to_fdt64(atag->u.mem.start);
mem_reg_prop64[memcount++] =
cpu_to_fdt64(atag->u.mem.size);
} else {
mem_reg_property[memcount++] =
cpu_to_fdt32(atag->u.mem.start);
mem_reg_property[memcount++] =
cpu_to_fdt32(atag->u.mem.size);
}
} else if (atag->hdr.tag == ATAG_INITRD2) {
uint32_t initrd_start, initrd_size;
initrd_start = atag->u.initrd.start;
initrd_size = atag->u.initrd.size;
setprop_cell(fdt, "/chosen", "linux,initrd-start",
initrd_start);
setprop_cell(fdt, "/chosen", "linux,initrd-end",
initrd_start + initrd_size);
}
}
if (memcount) {
setprop(fdt, "/memory", "reg", mem_reg_property,
4 * memcount * memsize);
}
return fdt_pack(fdt);
}
static void fdt_fixup_gic(void *blob)
{
int offset, err;
u64 reg[8];
struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
unsigned int val;
struct ccsr_scfg __iomem *scfg = (void *)CONFIG_SYS_FSL_SCFG_ADDR;
int align_64k = 0;
val = gur_in32(&gur->svr);
if (!IS_SVR_DEV(val, SVR_DEV(SVR_LS1043A))) {
align_64k = 1;
} else if (SVR_REV(val) != REV1_0) {
val = scfg_in32(&scfg->gic_align) & (0x01 << GIC_ADDR_BIT);
if (!val)
align_64k = 1;
}
offset = fdt_subnode_offset(blob, 0, "interrupt-controller@1400000");
if (offset < 0) {
printf("WARNING: fdt_subnode_offset can't find node %s: %s\n",
"interrupt-controller@1400000", fdt_strerror(offset));
return;
}
/* Fixup gic node align with 64K */
if (align_64k) {
reg[0] = cpu_to_fdt64(GICD_BASE_64K);
reg[1] = cpu_to_fdt64(GICD_SIZE_64K);
reg[2] = cpu_to_fdt64(GICC_BASE_64K);
reg[3] = cpu_to_fdt64(GICC_SIZE_64K);
reg[4] = cpu_to_fdt64(GICH_BASE_64K);
reg[5] = cpu_to_fdt64(GICH_SIZE_64K);
reg[6] = cpu_to_fdt64(GICV_BASE_64K);
reg[7] = cpu_to_fdt64(GICV_SIZE_64K);
} else {
/* Fixup gic node align with default */
reg[0] = cpu_to_fdt64(GICD_BASE);
reg[1] = cpu_to_fdt64(GICD_SIZE);
reg[2] = cpu_to_fdt64(GICC_BASE);
reg[3] = cpu_to_fdt64(GICC_SIZE);
reg[4] = cpu_to_fdt64(GICH_BASE);
reg[5] = cpu_to_fdt64(GICH_SIZE);
reg[6] = cpu_to_fdt64(GICV_BASE);
reg[7] = cpu_to_fdt64(GICV_SIZE);
}
err = fdt_setprop(blob, offset, "reg", reg, sizeof(reg));
if (err < 0) {
printf("WARNING: fdt_setprop can't set %s from node %s: %s\n",
"reg", "interrupt-controller@1400000",
fdt_strerror(err));
return;
}
return;
}
void ft_fixup_cpu(void *blob)
{
int off;
__maybe_unused u64 spin_tbl_addr = (u64)get_spin_tbl_addr();
fdt32_t *reg;
int addr_cells;
u64 val, core_id;
size_t *boot_code_size = &(__secondary_boot_code_size);
u32 mask = cpu_pos_mask();
int off_prev = -1;
off = fdt_path_offset(blob, "/cpus");
if (off < 0) {
puts("couldn't find /cpus node\n");
return;
}
fdt_support_default_count_cells(blob, off, &addr_cells, NULL);
off = fdt_node_offset_by_prop_value(blob, off_prev, "device_type",
"cpu", 4);
while (off != -FDT_ERR_NOTFOUND) {
reg = (fdt32_t *)fdt_getprop(blob, off, "reg", 0);
if (reg) {
core_id = fdt_read_number(reg, addr_cells);
if (!test_bit(id_to_core(core_id), &mask)) {
fdt_del_node(blob, off);
off = off_prev;
}
}
off_prev = off;
off = fdt_node_offset_by_prop_value(blob, off_prev,
"device_type", "cpu", 4);
}
#if defined(CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT) && \
defined(CONFIG_SEC_FIRMWARE_ARMV8_PSCI)
int node;
u32 psci_ver;
/* Check the psci version to determine if the psci is supported */
psci_ver = sec_firmware_support_psci_version();
if (psci_ver == 0xffffffff) {
/* remove psci DT node */
node = fdt_path_offset(blob, "/psci");
if (node >= 0)
goto remove_psci_node;
node = fdt_node_offset_by_compatible(blob, -1, "arm,psci");
if (node >= 0)
goto remove_psci_node;
node = fdt_node_offset_by_compatible(blob, -1, "arm,psci-0.2");
if (node >= 0)
goto remove_psci_node;
node = fdt_node_offset_by_compatible(blob, -1, "arm,psci-1.0");
if (node >= 0)
goto remove_psci_node;
remove_psci_node:
if (node >= 0)
fdt_del_node(blob, node);
} else {
return;
}
#endif
off = fdt_path_offset(blob, "/cpus");
if (off < 0) {
puts("couldn't find /cpus node\n");
return;
}
fdt_support_default_count_cells(blob, off, &addr_cells, NULL);
off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
while (off != -FDT_ERR_NOTFOUND) {
reg = (fdt32_t *)fdt_getprop(blob, off, "reg", 0);
if (reg) {
core_id = fdt_read_number(reg, addr_cells);
if (core_id == 0 || (is_core_online(core_id))) {
val = spin_tbl_addr;
val += id_to_core(core_id) *
SPIN_TABLE_ELEM_SIZE;
val = cpu_to_fdt64(val);
fdt_setprop_string(blob, off, "enable-method",
"spin-table");
fdt_setprop(blob, off, "cpu-release-addr",
&val, sizeof(val));
} else {
debug("skipping offline core\n");
}
} else {
puts("Warning: found cpu node without reg property\n");
}
off = fdt_node_offset_by_prop_value(blob, off, "device_type",
"cpu", 4);
}
fdt_add_mem_rsv(blob, (uintptr_t)&secondary_boot_code,
*boot_code_size);
#if defined(CONFIG_EFI_LOADER) && !defined(CONFIG_SPL_BUILD)
efi_add_memory_map((uintptr_t)&secondary_boot_code,
ALIGN(*boot_code_size, EFI_PAGE_SIZE) >> EFI_PAGE_SHIFT,
EFI_RESERVED_MEMORY_TYPE, false);
#endif
}
efi_status_t update_fdt(efi_system_table_t *sys_table, void *orig_fdt,
unsigned long orig_fdt_size,
void *fdt, int new_fdt_size, char *cmdline_ptr,
u64 initrd_addr, u64 initrd_size,
efi_memory_desc_t *memory_map,
unsigned long map_size, unsigned long desc_size,
u32 desc_ver)
{
int node, prev, num_rsv;
int status;
u32 fdt_val32;
u64 fdt_val64;
/* Do some checks on provided FDT, if it exists*/
if (orig_fdt) {
if (fdt_check_header(orig_fdt)) {
pr_efi_err(sys_table, "Device Tree header not valid!\n");
return EFI_LOAD_ERROR;
}
/*
* We don't get the size of the FDT if we get if from a
* configuration table.
*/
if (orig_fdt_size && fdt_totalsize(orig_fdt) > orig_fdt_size) {
pr_efi_err(sys_table, "Truncated device tree! foo!\n");
return EFI_LOAD_ERROR;
}
}
if (orig_fdt)
status = fdt_open_into(orig_fdt, fdt, new_fdt_size);
else
status = fdt_create_empty_tree(fdt, new_fdt_size);
if (status != 0)
goto fdt_set_fail;
/*
* Delete any memory nodes present. We must delete nodes which
* early_init_dt_scan_memory may try to use.
*/
prev = 0;
for (;;) {
const char *type;
int len;
node = fdt_next_node(fdt, prev, NULL);
if (node < 0)
break;
type = fdt_getprop(fdt, node, "device_type", &len);
if (type && strncmp(type, "memory", len) == 0) {
fdt_del_node(fdt, node);
continue;
}
prev = node;
}
/*
* Delete all memory reserve map entries. When booting via UEFI,
* kernel will use the UEFI memory map to find reserved regions.
*/
num_rsv = fdt_num_mem_rsv(fdt);
while (num_rsv-- > 0)
fdt_del_mem_rsv(fdt, num_rsv);
node = fdt_subnode_offset(fdt, 0, "chosen");
if (node < 0) {
node = fdt_add_subnode(fdt, 0, "chosen");
if (node < 0) {
status = node; /* node is error code when negative */
goto fdt_set_fail;
}
}
if ((cmdline_ptr != NULL) && (strlen(cmdline_ptr) > 0)) {
status = fdt_setprop(fdt, node, "bootargs", cmdline_ptr,
strlen(cmdline_ptr) + 1);
if (status)
goto fdt_set_fail;
}
/* Set initrd address/end in device tree, if present */
if (initrd_size != 0) {
u64 initrd_image_end;
u64 initrd_image_start = cpu_to_fdt64(initrd_addr);
status = fdt_setprop(fdt, node, "linux,initrd-start",
&initrd_image_start, sizeof(u64));
if (status)
goto fdt_set_fail;
initrd_image_end = cpu_to_fdt64(initrd_addr + initrd_size);
status = fdt_setprop(fdt, node, "linux,initrd-end",
&initrd_image_end, sizeof(u64));
if (status)
goto fdt_set_fail;
}
/* Add FDT entries for EFI runtime services in chosen node. */
node = fdt_subnode_offset(fdt, 0, "chosen");
fdt_val64 = cpu_to_fdt64((u64)(unsigned long)sys_table);
status = fdt_setprop(fdt, node, "linux,uefi-system-table",
&fdt_val64, sizeof(fdt_val64));
if (status)
goto fdt_set_fail;
fdt_val64 = cpu_to_fdt64((u64)(unsigned long)memory_map);
status = fdt_setprop(fdt, node, "linux,uefi-mmap-start",
&fdt_val64, sizeof(fdt_val64));
if (status)
goto fdt_set_fail;
fdt_val32 = cpu_to_fdt32(map_size);
status = fdt_setprop(fdt, node, "linux,uefi-mmap-size",
&fdt_val32, sizeof(fdt_val32));
if (status)
goto fdt_set_fail;
fdt_val32 = cpu_to_fdt32(desc_size);
status = fdt_setprop(fdt, node, "linux,uefi-mmap-desc-size",
&fdt_val32, sizeof(fdt_val32));
if (status)
goto fdt_set_fail;
fdt_val32 = cpu_to_fdt32(desc_ver);
status = fdt_setprop(fdt, node, "linux,uefi-mmap-desc-ver",
&fdt_val32, sizeof(fdt_val32));
if (status)
goto fdt_set_fail;
/*
* Add kernel version banner so stub/kernel match can be
* verified.
*/
status = fdt_setprop_string(fdt, node, "linux,uefi-stub-kern-ver",
linux_banner);
if (status)
goto fdt_set_fail;
return EFI_SUCCESS;
fdt_set_fail:
if (status == -FDT_ERR_NOSPACE)
return EFI_BUFFER_TOO_SMALL;
return EFI_LOAD_ERROR;
}
/*
* Convert and fold provided ATAGs into the provided FDT.
*
* REturn values:
* = 0 -> pretend success
* = 1 -> bad ATAG (may retry with another possible ATAG pointer)
* < 0 -> error from libfdt
*/
int atags_to_fdt(void *atag_list, void *fdt, int total_space)
{
struct tag *atag = atag_list;
/* In the case of 64 bits memory size, need to reserve 2 cells for
* address and size for each bank */
uint32_t mem_reg_property[2 * 2 * NR_BANKS];
int memcount = 0;
int ret, memsize;
/* make sure we've got an aligned pointer */
if ((u32)atag_list & 0x3)
return 1;
/* if we get a DTB here we're done already */
if (*(u32 *)atag_list == fdt32_to_cpu(FDT_MAGIC))
return 0;
/* validate the ATAG */
if (atag->hdr.tag != ATAG_CORE ||
(atag->hdr.size != tag_size(tag_core) &&
atag->hdr.size != 2))
return 1;
/* let's give it all the room it could need */
ret = fdt_open_into(fdt, fdt, total_space);
if (ret < 0)
return ret;
for_each_tag(atag, atag_list) {
if (atag->hdr.tag == ATAG_CMDLINE) {
/* Append the ATAGS command line to the device tree
* command line.
* NB: This means that if the same parameter is set in
* the device tree and in the tags, the one from the
* tags will be chosen.
*/
if (do_extend_cmdline)
merge_fdt_bootargs(fdt,
atag->u.cmdline.cmdline);
else
setprop_string(fdt, "/chosen", "bootargs",
atag->u.cmdline.cmdline);
} else if (atag->hdr.tag == ATAG_MEM) {
if (memcount >= sizeof(mem_reg_property)/4)
continue;
if (!atag->u.mem.size)
continue;
memsize = get_cell_size(fdt);
if (memsize == 2) {
/* if memsize is 2, that means that
* each data needs 2 cells of 32 bits,
* so the data are 64 bits */
uint64_t *mem_reg_prop64 =
(uint64_t *)mem_reg_property;
mem_reg_prop64[memcount++] =
cpu_to_fdt64(atag->u.mem.start);
mem_reg_prop64[memcount++] =
cpu_to_fdt64(atag->u.mem.size);
} else {
mem_reg_property[memcount++] =
cpu_to_fdt32(atag->u.mem.start);
mem_reg_property[memcount++] =
cpu_to_fdt32(atag->u.mem.size);
}
} else if (atag->hdr.tag == ATAG_INITRD2) {
uint32_t initrd_start, initrd_size;
initrd_start = atag->u.initrd.start;
initrd_size = atag->u.initrd.size;
setprop_cell(fdt, "/chosen", "linux,initrd-start",
initrd_start);
setprop_cell(fdt, "/chosen", "linux,initrd-end",
initrd_start + initrd_size);
} else if (atag->hdr.tag == ATAG_BLUETOOTH) {
setprop_values(fdt, "/chosen", "linux,bt_mac",
(unsigned char *)(&atag->u), (atag->hdr.size-2)*sizeof(__u32));
} else if (atag->hdr.tag == ATAG_MSM_WIFI) {
#define NVS_MAX_SIZE 0x800U
#define NVS_LEN_OFFSET 0x0C
#define NVS_DATA_OFFSET 0x40
char append[] = "\nsd_oobonly=1\nbtc_params80=0\nbtc_params6=30\n";
__u32 len = 0;
__u32 full_len = (atag->hdr.size-2)*sizeof(__u32);
// check that we have enought space for get len
if (full_len > NVS_LEN_OFFSET)
memcpy(&len, (unsigned char *)(&atag->u) + NVS_LEN_OFFSET, sizeof(len));
// len is less than full block size
if (len > (NVS_MAX_SIZE - NVS_DATA_OFFSET))
len = (NVS_MAX_SIZE - NVS_DATA_OFFSET);
// len is less than atag block size
if (len > full_len)
len = full_len;
// we have enought space for add additional params
if ((len + strlen(append) + 1) <= full_len) {
// block is finished by zero
if (((unsigned char *)(&atag->u))[NVS_DATA_OFFSET + len] == 0)
len --;
//copy additional params
memcpy(
(unsigned char *)(&atag->u) + NVS_DATA_OFFSET + len,
append,
strlen(append) + 1
);
len += strlen(append);
len ++;
}
// finaly save new wifi calibration
setprop_values(fdt, "/chosen", "linux,wifi-calibration",
(unsigned char *)(&atag->u) + NVS_DATA_OFFSET, len);
} else if (atag->hdr.tag == ATAG_MSM_AWB_CAL) {
setprop_values(fdt, "/chosen", "linux,awb_cal",
(unsigned char *)(&atag->u), (atag->hdr.size-2)*sizeof(__u32));
} else if (atag->hdr.tag == ATAG_MFG_GPIO_TABLE) {
setprop_values(fdt, "/chosen", "linux,gpio_table",
(unsigned char *)(&atag->u), (atag->hdr.size-2)*sizeof(__u32));
} else if (atag->hdr.tag == ATAG_MSM_PARTITION) {
setprop_values(fdt, "/chosen", "linux,msm_partitions",
(unsigned char *)(&atag->u), (atag->hdr.size-2)*sizeof(__u32));
} else if (atag->hdr.tag == ATAG_MEMSIZE) {
setprop_cell(fdt, "/chosen", "linux,memsize",
atag->u.revision.rev);
} else if (atag->hdr.tag == ATAG_ALS) {
setprop_cell(fdt, "/chosen", "linux,als_calibration",
atag->u.als_kadc.kadc);
} else if (atag->hdr.tag == ATAG_ENGINEERID) {
setprop_cell(fdt, "/chosen", "linux,engineerid",
atag->u.revision.rev);
} else if (atag->hdr.tag == ATAG_SMI) {
setprop_cell(fdt, "/chosen", "linux,smi",
atag->u.mem.size);
} else if (atag->hdr.tag == ATAG_HWID) {
setprop_cell(fdt, "/chosen", "linux,hwid",
atag->u.revision.rev);
} else if (atag->hdr.tag == ATAG_SKUID) {
setprop_cell(fdt, "/chosen", "linux,skuid",
atag->u.revision.rev);
} else if (atag->hdr.tag == ATAG_HERO_PANEL_TYPE) {
setprop_cell(fdt, "/chosen", "linux,panel_type",
atag->u.revision.rev);
} else if (atag->hdr.tag == ATAG_GS) {
setprop_cell(fdt, "/chosen", "linux,gs_calibration",
atag->u.revision.rev);
} else if (atag->hdr.tag == ATAG_REVISION) {
__u32 revision[2];
revision[0] = cpu_to_fdt32(atag->u.revision.rev);
revision[1] = cpu_to_fdt32(atag->u.revision.rev);
if (atag->hdr.size > 3) {
revision[1] = cpu_to_fdt32(atag->u.revision.rev2);
}
setprop_values(fdt, "/chosen", "linux,revision",
revision, sizeof(revision));
} else if (atag->hdr.tag == ATAG_PS) {
__u32 ps_settings[2];
ps_settings[0] = cpu_to_fdt32(atag->u.serialnr.low);
ps_settings[1] = cpu_to_fdt32(atag->u.serialnr.high);
setprop_values(fdt, "/chosen", "linux,ps_calibration",
ps_settings, sizeof(ps_settings));
} else if (atag->hdr.tag == ATAG_PS_TYPE) {
setprop_cell(fdt, "/chosen", "linux,ps_type",
atag->u.revision.rev);
}
}
if (memcount) {
setprop(fdt, "/memory", "reg", mem_reg_property,
4 * memcount * memsize);
}
return fdt_pack(fdt);
}
void
fixup_memory(struct sys_info *si)
{
struct mem_region *curmr;
uint32_t addr_cells, size_cells;
uint32_t *addr_cellsp, *reg, *size_cellsp;
int err, i, len, memory, realmrno, root;
uint8_t *buf, *sb;
root = fdt_path_offset(fdtp, "/");
if (root < 0) {
sprintf(command_errbuf, "Could not find root node !");
return;
}
memory = fdt_path_offset(fdtp, "/memory");
if (memory <= 0) {
/* Create proper '/memory' node. */
memory = fdt_add_subnode(fdtp, root, "memory");
if (memory <= 0) {
sprintf(command_errbuf, "Could not fixup '/memory' "
"node, error code : %d!\n", memory);
return;
}
err = fdt_setprop(fdtp, memory, "device_type", "memory",
sizeof("memory"));
if (err < 0)
return;
}
addr_cellsp = (uint32_t *)fdt_getprop(fdtp, root, "#address-cells",
NULL);
size_cellsp = (uint32_t *)fdt_getprop(fdtp, root, "#size-cells", NULL);
if (addr_cellsp == NULL || size_cellsp == NULL) {
sprintf(command_errbuf, "Could not fixup '/memory' node : "
"%s %s property not found in root node!\n",
(!addr_cellsp) ? "#address-cells" : "",
(!size_cellsp) ? "#size-cells" : "");
return;
}
addr_cells = fdt32_to_cpu(*addr_cellsp);
size_cells = fdt32_to_cpu(*size_cellsp);
/* Count valid memory regions entries in sysinfo. */
realmrno = si->mr_no;
for (i = 0; i < si->mr_no; i++)
if (si->mr[i].start == 0 && si->mr[i].size == 0)
realmrno--;
if (realmrno == 0) {
sprintf(command_errbuf, "Could not fixup '/memory' node : "
"sysinfo doesn't contain valid memory regions info!\n");
return;
}
if ((reg = (uint32_t *)fdt_getprop(fdtp, memory, "reg",
&len)) != NULL) {
if (fdt_reg_valid(reg, len, addr_cells, size_cells) == 0)
/*
* Do not apply fixup if existing 'reg' property
* seems to be valid.
*/
return;
}
len = (addr_cells + size_cells) * realmrno * sizeof(uint32_t);
sb = buf = (uint8_t *)malloc(len);
if (!buf)
return;
bzero(buf, len);
for (i = 0; i < si->mr_no; i++) {
curmr = &si->mr[i];
if (curmr->size != 0) {
/* Ensure endianess, and put cells into a buffer */
if (addr_cells == 2)
*(uint64_t *)buf =
cpu_to_fdt64(curmr->start);
else
*(uint32_t *)buf =
cpu_to_fdt32(curmr->start);
buf += sizeof(uint32_t) * addr_cells;
if (size_cells == 2)
*(uint64_t *)buf =
cpu_to_fdt64(curmr->size);
else
*(uint32_t *)buf =
cpu_to_fdt32(curmr->size);
buf += sizeof(uint32_t) * size_cells;
}
}
/* Set property */
if ((err = fdt_setprop(fdtp, memory, "reg", sb, len)) < 0)
sprintf(command_errbuf, "Could not fixup '/memory' node.\n");
}
STATIC
EFI_STATUS
PrepareFdt (
IN OUT VOID *Fdt,
IN UINTN FdtSize
)
{
EFI_STATUS Status;
INT32 Node;
INT32 CpuNode;
UINTN Index;
ARM_CORE_INFO *ArmCoreInfoTable;
UINTN ArmCoreCount;
INT32 MapNode;
INT32 ClusterNode;
INT32 PmuNode;
PMU_INTERRUPT PmuInt;
INT32 Phandle[NUM_CORES];
UINT32 ClusterIndex;
UINT32 CoreIndex;
UINT32 ClusterCount;
UINT32 CoresInCluster;
UINT32 ClusterId;
UINTN MpId;
CHAR8 Name[10];
AMD_MP_CORE_INFO_PROTOCOL *AmdMpCoreInfoProtocol;
//
// Setup Arm Mpcore Info if it is a multi-core or multi-cluster platforms.
//
// For 'cpus' and 'cpu' device tree nodes bindings, refer to this file
// in the kernel documentation:
// Documentation/devicetree/bindings/arm/cpus.txt
//
Status = gBS->LocateProtocol (
&gAmdMpCoreInfoProtocolGuid,
NULL,
(VOID **)&AmdMpCoreInfoProtocol
);
ASSERT_EFI_ERROR (Status);
// Get pointer to ARM core info table
ArmCoreInfoTable = AmdMpCoreInfoProtocol->GetArmCoreInfoTable (&ArmCoreCount);
ASSERT (ArmCoreInfoTable != NULL);
ASSERT (ArmCoreCount <= NUM_CORES);
// Get Id from primary CPU
MpId = (UINTN)ArmReadMpidr ();
// Create /pmu node
PmuNode = fdt_add_subnode(Fdt, 0, "pmu");
if (PmuNode >= 0) {
fdt_setprop_string (Fdt, PmuNode, "compatible", "arm,armv8-pmuv3");
// append PMU interrupts
for (Index = 0; Index < ArmCoreCount; Index++) {
MpId = (UINTN)GET_MPID (ArmCoreInfoTable[Index].ClusterId,
ArmCoreInfoTable[Index].CoreId);
Status = AmdMpCoreInfoProtocol->GetPmuSpiFromMpId (MpId, &PmuInt.IntId);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR,
"FDT: Error getting PMU interrupt for MpId '0x%x'\n", MpId));
return Status;
}
PmuInt.Flag = cpu_to_fdt32 (PMU_INT_FLAG_SPI);
PmuInt.IntId = cpu_to_fdt32 (PmuInt.IntId);
PmuInt.Type = cpu_to_fdt32 (PMU_INT_TYPE_HIGH_LEVEL);
fdt_appendprop (Fdt, PmuNode, "interrupts", &PmuInt, sizeof(PmuInt));
}
} else {
DEBUG ((DEBUG_ERROR, "FDT: Error creating 'pmu' node\n"));
return EFI_INVALID_PARAMETER;
}
// Create /cpus noide
Node = fdt_add_subnode (Fdt, 0, "cpus");
if (Node >= 0) {
// Configure the 'cpus' node
fdt_setprop_string (Fdt, Node, "name", "cpus");
fdt_setprop_cell (Fdt, Node, "#address-cells", sizeof (UINTN) / 4);
fdt_setprop_cell (Fdt, Node, "#size-cells", 0);
} else {
DEBUG ((DEBUG_ERROR, "FDT: Error creating 'cpus' node\n"));
return EFI_INVALID_PARAMETER;
}
//
// Walk the processor table in reverse order for proper listing in FDT
//
Index = ArmCoreCount;
while (Index--) {
// Create 'cpu' node
AsciiSPrint (Name, sizeof (Name), "CPU%d", Index);
CpuNode = fdt_add_subnode (Fdt, Node, Name);
if (CpuNode < 0) {
DEBUG ((DEBUG_ERROR, "FDT: Error on creating '%a' node\n", Name));
return EFI_INVALID_PARAMETER;
}
Phandle[Index] = fdt_alloc_phandle (Fdt);
fdt_setprop_cell (Fdt, CpuNode, "phandle", Phandle[Index]);
fdt_setprop_cell (Fdt, CpuNode, "linux,phandle", Phandle[Index]);
fdt_setprop_string (Fdt, CpuNode, "enable-method", "psci");
MpId = (UINTN)GET_MPID (ArmCoreInfoTable[Index].ClusterId,
ArmCoreInfoTable[Index].CoreId);
MpId = cpu_to_fdt64 (MpId);
fdt_setprop (Fdt, CpuNode, "reg", &MpId, sizeof (MpId));
fdt_setprop_string (Fdt, CpuNode, "compatible", "arm,armv8");
fdt_setprop_string (Fdt, CpuNode, "device_type", "cpu");
}
// Create /cpu-map node
MapNode = fdt_add_subnode (Fdt, Node, "cpu-map");
if (MapNode >= 0) {
ClusterIndex = ArmCoreCount - 1;
ClusterCount = NumberOfClustersInTable (ArmCoreInfoTable,
ArmCoreCount);
while (ClusterCount--) {
// Create 'cluster' node
AsciiSPrint (Name, sizeof (Name), "cluster%d", ClusterCount);
ClusterNode = fdt_add_subnode (Fdt, MapNode, Name);
if (ClusterNode < 0) {
DEBUG ((DEBUG_ERROR, "FDT: Error creating '%a' node\n", Name));
return EFI_INVALID_PARAMETER;
}
ClusterId = ArmCoreInfoTable[ClusterIndex].ClusterId;
CoreIndex = ClusterIndex;
CoresInCluster = NumberOfCoresInCluster (ArmCoreInfoTable,
ArmCoreCount,
ClusterId);
while (CoresInCluster--) {
// Create 'core' node
AsciiSPrint (Name, sizeof (Name), "core%d", CoresInCluster);
CpuNode = fdt_add_subnode (Fdt, ClusterNode, Name);
if (CpuNode < 0) {
DEBUG ((DEBUG_ERROR, "FDT: Error creating '%a' node\n", Name));
return EFI_INVALID_PARAMETER;
}
fdt_setprop_cell (Fdt, CpuNode, "cpu", Phandle[CoreIndex]);
// iterate to next core in cluster
if (CoresInCluster) {
do {
--CoreIndex;
} while (ClusterId != ArmCoreInfoTable[CoreIndex].ClusterId);
}
}
// iterate to next cluster
if (ClusterCount) {
do {
--ClusterIndex;
} while (ClusterInRange (ArmCoreInfoTable,
ArmCoreInfoTable[ClusterIndex].ClusterId,
ClusterIndex + 1,
ArmCoreCount - 1));
}
}
} else {
DEBUG ((DEBUG_ERROR,"FDT: Error creating 'cpu-map' node\n"));
return EFI_INVALID_PARAMETER;
}
SetSocIdStatus (Fdt);
SetXgbeStatus (Fdt);
// Update the real size of the Device Tree
fdt_pack (Fdt);
return EFI_SUCCESS;
}
static int setup_fdt(struct kvm *kvm)
{
struct device_header *dev_hdr;
u8 staging_fdt[FDT_MAX_SIZE];
u32 gic_phandle = fdt__alloc_phandle();
u64 mem_reg_prop[] = {
cpu_to_fdt64(kvm->arch.memory_guest_start),
cpu_to_fdt64(kvm->ram_size),
};
void *fdt = staging_fdt;
void *fdt_dest = guest_flat_to_host(kvm,
kvm->arch.dtb_guest_start);
void (*generate_mmio_fdt_nodes)(void *, struct device_header *,
void (*)(void *, u8));
void (*generate_cpu_peripheral_fdt_nodes)(void *, struct kvm *, u32)
= kvm->cpus[0]->generate_fdt_nodes;
/* Create new tree without a reserve map */
_FDT(fdt_create(fdt, FDT_MAX_SIZE));
_FDT(fdt_finish_reservemap(fdt));
/* Header */
_FDT(fdt_begin_node(fdt, ""));
_FDT(fdt_property_cell(fdt, "interrupt-parent", gic_phandle));
_FDT(fdt_property_string(fdt, "compatible", "linux,dummy-virt"));
_FDT(fdt_property_cell(fdt, "#address-cells", 0x2));
_FDT(fdt_property_cell(fdt, "#size-cells", 0x2));
/* /chosen */
_FDT(fdt_begin_node(fdt, "chosen"));
_FDT(fdt_property_cell(fdt, "linux,pci-probe-only", 1));
_FDT(fdt_property_string(fdt, "bootargs", kern_cmdline));
/* Initrd */
if (kvm->arch.initrd_size != 0) {
u32 ird_st_prop = cpu_to_fdt64(kvm->arch.initrd_guest_start);
u32 ird_end_prop = cpu_to_fdt64(kvm->arch.initrd_guest_start +
kvm->arch.initrd_size);
_FDT(fdt_property(fdt, "linux,initrd-start",
&ird_st_prop, sizeof(ird_st_prop)));
_FDT(fdt_property(fdt, "linux,initrd-end",
&ird_end_prop, sizeof(ird_end_prop)));
}
_FDT(fdt_end_node(fdt));
/* Memory */
_FDT(fdt_begin_node(fdt, "memory"));
_FDT(fdt_property_string(fdt, "device_type", "memory"));
_FDT(fdt_property(fdt, "reg", mem_reg_prop, sizeof(mem_reg_prop)));
_FDT(fdt_end_node(fdt));
/* CPU and peripherals (interrupt controller, timers, etc) */
generate_cpu_nodes(fdt, kvm);
if (generate_cpu_peripheral_fdt_nodes)
generate_cpu_peripheral_fdt_nodes(fdt, kvm, gic_phandle);
/* Virtio MMIO devices */
dev_hdr = device__first_dev(DEVICE_BUS_MMIO);
while (dev_hdr) {
generate_mmio_fdt_nodes = dev_hdr->data;
generate_mmio_fdt_nodes(fdt, dev_hdr, generate_irq_prop);
dev_hdr = device__next_dev(dev_hdr);
}
/* IOPORT devices (!) */
dev_hdr = device__first_dev(DEVICE_BUS_IOPORT);
while (dev_hdr) {
generate_mmio_fdt_nodes = dev_hdr->data;
generate_mmio_fdt_nodes(fdt, dev_hdr, generate_irq_prop);
dev_hdr = device__next_dev(dev_hdr);
}
/* PCI host controller */
pci__generate_fdt_nodes(fdt, gic_phandle);
/* PSCI firmware */
_FDT(fdt_begin_node(fdt, "psci"));
_FDT(fdt_property_string(fdt, "compatible", "arm,psci"));
_FDT(fdt_property_string(fdt, "method", "hvc"));
_FDT(fdt_property_cell(fdt, "cpu_suspend", KVM_PSCI_FN_CPU_SUSPEND));
_FDT(fdt_property_cell(fdt, "cpu_off", KVM_PSCI_FN_CPU_OFF));
_FDT(fdt_property_cell(fdt, "cpu_on", KVM_PSCI_FN_CPU_ON));
_FDT(fdt_property_cell(fdt, "migrate", KVM_PSCI_FN_MIGRATE));
_FDT(fdt_end_node(fdt));
/* Finalise. */
_FDT(fdt_end_node(fdt));
_FDT(fdt_finish(fdt));
_FDT(fdt_open_into(fdt, fdt_dest, FDT_MAX_SIZE));
_FDT(fdt_pack(fdt_dest));
if (kvm->cfg.arch.dump_dtb_filename)
dump_fdt(kvm->cfg.arch.dump_dtb_filename, fdt_dest);
return 0;
}
/**
* elf_exec_load - load ELF executable image
* @lowest_load_addr: On return, will be the address where the first PT_LOAD
* section will be loaded in memory.
*
* Return:
* 0 on success, negative value on failure.
*/
static int elf_exec_load(struct kimage *image, struct elfhdr *ehdr,
struct elf_info *elf_info,
unsigned long *lowest_load_addr)
{
unsigned long base = 0, lowest_addr = UINT_MAX;
int ret;
size_t i;
struct kexec_buf kbuf = { .image = image, .buf_max = ppc64_rma_size,
.top_down = false };
/* Read in the PT_LOAD segments. */
for (i = 0; i < ehdr->e_phnum; i++) {
unsigned long load_addr;
size_t size;
const struct elf_phdr *phdr;
phdr = &elf_info->proghdrs[i];
if (phdr->p_type != PT_LOAD)
continue;
size = phdr->p_filesz;
if (size > phdr->p_memsz)
size = phdr->p_memsz;
kbuf.buffer = (void *) elf_info->buffer + phdr->p_offset;
kbuf.bufsz = size;
kbuf.memsz = phdr->p_memsz;
kbuf.buf_align = phdr->p_align;
kbuf.buf_min = phdr->p_paddr + base;
ret = kexec_add_buffer(&kbuf);
if (ret)
goto out;
load_addr = kbuf.mem;
if (load_addr < lowest_addr)
lowest_addr = load_addr;
}
/* Update entry point to reflect new load address. */
ehdr->e_entry += base;
*lowest_load_addr = lowest_addr;
ret = 0;
out:
return ret;
}
void *elf64_load(struct kimage *image, char *kernel_buf,
unsigned long kernel_len, char *initrd,
unsigned long initrd_len, char *cmdline,
unsigned long cmdline_len)
{
int i, ret;
unsigned int fdt_size;
unsigned long kernel_load_addr, purgatory_load_addr;
unsigned long initrd_load_addr, fdt_load_addr, stack_top;
void *fdt;
const void *slave_code;
struct elfhdr ehdr;
struct elf_info elf_info;
struct fdt_reserve_entry *rsvmap;
struct kexec_buf kbuf = { .image = image, .buf_min = 0,
.buf_max = ppc64_rma_size };
ret = build_elf_exec_info(kernel_buf, kernel_len, &ehdr, &elf_info);
if (ret)
goto out;
ret = elf_exec_load(image, &ehdr, &elf_info, &kernel_load_addr);
if (ret)
goto out;
pr_debug("Loaded the kernel at 0x%lx\n", kernel_load_addr);
ret = kexec_load_purgatory(image, 0, ppc64_rma_size, true,
&purgatory_load_addr);
if (ret) {
pr_err("Loading purgatory failed.\n");
goto out;
}
pr_debug("Loaded purgatory at 0x%lx\n", purgatory_load_addr);
if (initrd != NULL) {
kbuf.buffer = initrd;
kbuf.bufsz = kbuf.memsz = initrd_len;
kbuf.buf_align = PAGE_SIZE;
kbuf.top_down = false;
ret = kexec_add_buffer(&kbuf);
if (ret)
goto out;
initrd_load_addr = kbuf.mem;
pr_debug("Loaded initrd at 0x%lx\n", initrd_load_addr);
}
fdt_size = fdt_totalsize(initial_boot_params) * 2;
fdt = kmalloc(fdt_size, GFP_KERNEL);
if (!fdt) {
pr_err("Not enough memory for the device tree.\n");
ret = -ENOMEM;
goto out;
}
ret = fdt_open_into(initial_boot_params, fdt, fdt_size);
if (ret < 0) {
pr_err("Error setting up the new device tree.\n");
ret = -EINVAL;
goto out;
}
ret = setup_new_fdt(image, fdt, initrd_load_addr, initrd_len, cmdline);
if (ret)
goto out;
/*
* Documentation/devicetree/booting-without-of.txt says we need to
* add a reservation entry for the device tree block, but
* early_init_fdt_reserve_self reserves the memory even if there's no
* such entry. We'll add a reservation entry anyway, to be safe and
* compliant.
*
* Use dummy values, we will correct them in a moment.
*/
ret = fdt_add_mem_rsv(fdt, 1, 1);
if (ret) {
pr_err("Error reserving device tree memory: %s\n",
fdt_strerror(ret));
ret = -EINVAL;
goto out;
}
fdt_pack(fdt);
kbuf.buffer = fdt;
kbuf.bufsz = kbuf.memsz = fdt_size;
kbuf.buf_align = PAGE_SIZE;
kbuf.top_down = true;
ret = kexec_add_buffer(&kbuf);
if (ret)
goto out;
fdt_load_addr = kbuf.mem;
/*
* Fix fdt reservation, now that we now where it will be loaded
* and how big it is.
*/
rsvmap = fdt + fdt_off_mem_rsvmap(fdt);
i = fdt_num_mem_rsv(fdt) - 1;
rsvmap[i].address = cpu_to_fdt64(fdt_load_addr);
rsvmap[i].size = cpu_to_fdt64(fdt_totalsize(fdt));
pr_debug("Loaded device tree at 0x%lx\n", fdt_load_addr);
kbuf.memsz = PURGATORY_STACK_SIZE;
kbuf.buf_align = PAGE_SIZE;
kbuf.top_down = true;
ret = kexec_locate_mem_hole(&kbuf);
if (ret) {
pr_err("Couldn't find free memory for the purgatory stack.\n");
ret = -ENOMEM;
goto out;
}
stack_top = kbuf.mem + PURGATORY_STACK_SIZE - 1;
pr_debug("Purgatory stack is at 0x%lx\n", stack_top);
slave_code = elf_info.buffer + elf_info.proghdrs[0].p_offset;
ret = setup_purgatory(image, slave_code, fdt, kernel_load_addr,
fdt_load_addr, stack_top,
find_debug_console(fdt));
if (ret)
pr_err("Error setting up the purgatory.\n");
out:
elf_free_info(&elf_info);
/* Make kimage_file_post_load_cleanup free the fdt buffer for us. */
return ret ? ERR_PTR(ret) : fdt;
}
struct kexec_file_ops kexec_elf64_ops = {
.probe = elf64_probe,
.load = elf64_load,
};
efi_status_t update_fdt(efi_system_table_t *sys_table, void *orig_fdt,
unsigned long orig_fdt_size,
void *fdt, int new_fdt_size, char *cmdline_ptr,
u64 initrd_addr, u64 initrd_size,
efi_memory_desc_t *memory_map,
unsigned long map_size, unsigned long desc_size,
u32 desc_ver)
{
int node, num_rsv;
int status;
u32 fdt_val32;
u64 fdt_val64;
/* Do some checks on provided FDT, if it exists*/
if (orig_fdt) {
if (fdt_check_header(orig_fdt)) {
pr_efi_err(sys_table, "Device Tree header not valid!\n");
return EFI_LOAD_ERROR;
}
/*
* We don't get the size of the FDT if we get if from a
* configuration table.
*/
if (orig_fdt_size && fdt_totalsize(orig_fdt) > orig_fdt_size) {
pr_efi_err(sys_table, "Truncated device tree! foo!\n");
return EFI_LOAD_ERROR;
}
}
if (orig_fdt)
status = fdt_open_into(orig_fdt, fdt, new_fdt_size);
else
status = fdt_create_empty_tree(fdt, new_fdt_size);
if (status != 0)
goto fdt_set_fail;
/*
* Delete all memory reserve map entries. When booting via UEFI,
* kernel will use the UEFI memory map to find reserved regions.
*/
num_rsv = fdt_num_mem_rsv(fdt);
while (num_rsv-- > 0)
fdt_del_mem_rsv(fdt, num_rsv);
node = fdt_subnode_offset(fdt, 0, "chosen");
if (node < 0) {
node = fdt_add_subnode(fdt, 0, "chosen");
if (node < 0) {
status = node; /* node is error code when negative */
goto fdt_set_fail;
}
}
if ((cmdline_ptr != NULL) && (strlen(cmdline_ptr) > 0)) {
status = fdt_setprop(fdt, node, "bootargs", cmdline_ptr,
strlen(cmdline_ptr) + 1);
if (status)
goto fdt_set_fail;
}
/* Set initrd address/end in device tree, if present */
if (initrd_size != 0) {
u64 initrd_image_end;
u64 initrd_image_start = cpu_to_fdt64(initrd_addr);
status = fdt_setprop(fdt, node, "linux,initrd-start",
&initrd_image_start, sizeof(u64));
if (status)
goto fdt_set_fail;
initrd_image_end = cpu_to_fdt64(initrd_addr + initrd_size);
status = fdt_setprop(fdt, node, "linux,initrd-end",
&initrd_image_end, sizeof(u64));
if (status)
goto fdt_set_fail;
}
/* Add FDT entries for EFI runtime services in chosen node. */
node = fdt_subnode_offset(fdt, 0, "chosen");
fdt_val64 = cpu_to_fdt64((u64)(unsigned long)sys_table);
status = fdt_setprop(fdt, node, "linux,uefi-system-table",
&fdt_val64, sizeof(fdt_val64));
if (status)
goto fdt_set_fail;
fdt_val64 = cpu_to_fdt64((u64)(unsigned long)memory_map);
status = fdt_setprop(fdt, node, "linux,uefi-mmap-start",
&fdt_val64, sizeof(fdt_val64));
if (status)
goto fdt_set_fail;
fdt_val32 = cpu_to_fdt32(map_size);
status = fdt_setprop(fdt, node, "linux,uefi-mmap-size",
&fdt_val32, sizeof(fdt_val32));
if (status)
goto fdt_set_fail;
fdt_val32 = cpu_to_fdt32(desc_size);
status = fdt_setprop(fdt, node, "linux,uefi-mmap-desc-size",
&fdt_val32, sizeof(fdt_val32));
if (status)
goto fdt_set_fail;
fdt_val32 = cpu_to_fdt32(desc_ver);
status = fdt_setprop(fdt, node, "linux,uefi-mmap-desc-ver",
&fdt_val32, sizeof(fdt_val32));
if (status)
goto fdt_set_fail;
if (IS_ENABLED(CONFIG_RANDOMIZE_BASE)) {
efi_status_t efi_status;
efi_status = efi_get_random_bytes(sys_table, sizeof(fdt_val64),
(u8 *)&fdt_val64);
if (efi_status == EFI_SUCCESS) {
status = fdt_setprop(fdt, node, "kaslr-seed",
&fdt_val64, sizeof(fdt_val64));
if (status)
goto fdt_set_fail;
} else if (efi_status != EFI_NOT_FOUND) {
return efi_status;
}
}
return EFI_SUCCESS;
fdt_set_fail:
if (status == -FDT_ERR_NOSPACE)
return EFI_BUFFER_TOO_SMALL;
return EFI_LOAD_ERROR;
}
int atags_to_fdt(void *atag_list, void *fdt, int total_space)
{
struct tag *atag = atag_list;
/* In the case of 64 bits memory size, need to reserve 2 cells for
* address and size for each bank */
/* IAMROOT-12A:
* ------------
* 64비트 시스템의 경우 한 개 뱅크당 주소와 사이즈((2 + 2) x sizeof(int32))
*/
uint32_t mem_reg_property[2 * 2 * NR_BANKS];
int memcount = 0;
int ret, memsize;
/* make sure we've got an aligned pointer */
if ((u32)atag_list & 0x3)
return 1;
/* IAMROOT-12A:
* ------------
* atag/DTB 포인터에서 DTB 매직넘버를 발견하면 이미 DTB가 존재하는 것으로 파악이되어
* ATAG를 컨버전할 필요 없으므로 성공으로 리턴
*/
/* if we get a DTB here we're done already */
if (*(u32 *)atag_list == fdt32_to_cpu(FDT_MAGIC))
return 0;
/* IAMROOT-12A:
* ------------
* 처음에 오는 태크가 ATAG_CORE가 아니거나 사이즈가 맞지않으면 실패(1)로 리턴
*/
/* validate the ATAG */
if (atag->hdr.tag != ATAG_CORE ||
(atag->hdr.size != tag_size(tag_core) &&
atag->hdr.size != 2))
return 1;
/* let's give it all the room it could need */
ret = fdt_open_into(fdt, fdt, total_space);
if (ret < 0)
return ret;
/* IAMROOT-12A:
* ------------
* atag_list는 atag 개채의 묶음.
* for_each_tag()를 수행 시 atag에 하나의 ATAG를 가리키는 포인터가 담김
* 태그는 3개(ATAG_CMDLINE, ATAG_MEM, ATAG_INITRD2)만 디바이스트리로 컨버전
* - ATAG_CMDLINE(cmdline) ---> DTB:/chosen 노드 -> bootargs 프로퍼티
* - ATAG_MEM(u.mem.start & u.mem.size x N뱅크) ---> DTB:/memory 노드 -> reg 프로퍼티
* - ATAG_INITRD2(u.initrd.start & u.initrd.size) ---> DTB:/chosen 노드 -> linux,initrd-start
* ---> DTB:/chosen 노드 -> linux,initrd-end
*/
for_each_tag(atag, atag_list) {
if (atag->hdr.tag == ATAG_CMDLINE) {
/* Append the ATAGS command line to the device tree
* command line.
* NB: This means that if the same parameter is set in
* the device tree and in the tags, the one from the
* tags will be chosen.
*/
if (do_extend_cmdline)
merge_fdt_bootargs(fdt,
atag->u.cmdline.cmdline);
else
setprop_string(fdt, "/chosen", "bootargs",
atag->u.cmdline.cmdline);
} else if (atag->hdr.tag == ATAG_MEM) {
if (memcount >= sizeof(mem_reg_property)/4)
continue;
if (!atag->u.mem.size)
continue;
memsize = get_cell_size(fdt);
/* IAMROOT-12A:
* ------------
* memsize=2인 경우 64비트
* ATAG_MEM은 여러 개가 존재할 수 있다.
*/
if (memsize == 2) {
/* if memsize is 2, that means that
* each data needs 2 cells of 32 bits,
* so the data are 64 bits */
uint64_t *mem_reg_prop64 =
(uint64_t *)mem_reg_property;
mem_reg_prop64[memcount++] =
cpu_to_fdt64(atag->u.mem.start);
mem_reg_prop64[memcount++] =
cpu_to_fdt64(atag->u.mem.size);
} else {
mem_reg_property[memcount++] =
cpu_to_fdt32(atag->u.mem.start);
mem_reg_property[memcount++] =
cpu_to_fdt32(atag->u.mem.size);
}
} else if (atag->hdr.tag == ATAG_INITRD2) {
uint32_t initrd_start, initrd_size;
initrd_start = atag->u.initrd.start;
initrd_size = atag->u.initrd.size;
setprop_cell(fdt, "/chosen", "linux,initrd-start",
initrd_start);
setprop_cell(fdt, "/chosen", "linux,initrd-end",
initrd_start + initrd_size);
}
}
if (memcount) {
setprop(fdt, "/memory", "reg", mem_reg_property,
4 * memcount * memsize);
}
return fdt_pack(fdt);
}
EFI_STATUS
PrepareFdt (
IN CONST CHAR8* CommandLineArguments,
IN EFI_PHYSICAL_ADDRESS InitrdImage,
IN UINTN InitrdImageSize,
IN OUT EFI_PHYSICAL_ADDRESS *FdtBlobBase,
IN OUT UINTN *FdtBlobSize
)
{
EFI_STATUS Status;
EFI_PHYSICAL_ADDRESS NewFdtBlobBase;
EFI_PHYSICAL_ADDRESS NewFdtBlobAllocation;
UINTN NewFdtBlobSize;
VOID* fdt;
INTN err;
INTN node;
INT32 lenp;
CONST VOID* BootArg;
EFI_PHYSICAL_ADDRESS InitrdImageStart;
EFI_PHYSICAL_ADDRESS InitrdImageEnd;
UINTN Index;
UINTN MemoryMapSize;
EFI_MEMORY_DESCRIPTOR *MemoryMap;
EFI_MEMORY_DESCRIPTOR *MemoryMapPtr;
UINTN MapKey;
UINTN DescriptorSize;
UINT32 DescriptorVersion;
UINTN Pages;
UINTN OriginalFdtSize;
NewFdtBlobAllocation = 0;
//
// Sanity checks on the original FDT blob.
//
err = fdt_check_header ((VOID*)(UINTN)(*FdtBlobBase));
if (err != 0) {
Print (L"ERROR: Device Tree header not valid (err:%d)\n", err);
return EFI_INVALID_PARAMETER;
}
// The original FDT blob might have been loaded partially.
// Check that it is not the case.
OriginalFdtSize = (UINTN)fdt_totalsize ((VOID*)(UINTN)(*FdtBlobBase));
if (OriginalFdtSize > *FdtBlobSize) {
Print (L"ERROR: Incomplete FDT. Only %d/%d bytes have been loaded.\n",
*FdtBlobSize, OriginalFdtSize);
return EFI_INVALID_PARAMETER;
}
//
// Relocate the FDT to its final location.
//
Status = RelocateFdt (*FdtBlobBase, OriginalFdtSize,
&NewFdtBlobBase, &NewFdtBlobSize, &NewFdtBlobAllocation);
if (EFI_ERROR (Status)) {
goto FAIL_RELOCATE_FDT;
}
fdt = (VOID*)(UINTN)NewFdtBlobBase;
node = fdt_subnode_offset (fdt, 0, "chosen");
if (node < 0) {
// The 'chosen' node does not exist, create it
node = fdt_add_subnode (fdt, 0, "chosen");
if (node < 0) {
DEBUG ((EFI_D_ERROR, "Error on finding 'chosen' node\n"));
Status = EFI_INVALID_PARAMETER;
goto FAIL_COMPLETE_FDT;
}
}
DEBUG_CODE_BEGIN ();
BootArg = fdt_getprop (fdt, node, "bootargs", &lenp);
if (BootArg != NULL) {
DEBUG ((EFI_D_ERROR, "BootArg: %a\n", BootArg));
}
DEBUG_CODE_END ();
//
// Set Linux CmdLine
//
if ((CommandLineArguments != NULL) && (AsciiStrLen (CommandLineArguments) > 0)) {
err = fdt_setprop (fdt, node, "bootargs", CommandLineArguments,
AsciiStrSize (CommandLineArguments));
if (err) {
DEBUG ((EFI_D_ERROR, "Fail to set new 'bootarg' (err:%d)\n", err));
}
}
//
// Set Linux Initrd
//
if (InitrdImageSize != 0) {
InitrdImageStart = cpu_to_fdt64 (InitrdImage);
err = fdt_setprop (fdt, node, "linux,initrd-start",
&InitrdImageStart, sizeof (EFI_PHYSICAL_ADDRESS));
if (err) {
DEBUG ((EFI_D_ERROR, "Fail to set new 'linux,initrd-start' (err:%d)\n", err));
}
InitrdImageEnd = cpu_to_fdt64 (InitrdImage + InitrdImageSize);
err = fdt_setprop (fdt, node, "linux,initrd-end",
&InitrdImageEnd, sizeof (EFI_PHYSICAL_ADDRESS));
if (err) {
DEBUG ((EFI_D_ERROR, "Fail to set new 'linux,initrd-start' (err:%d)\n", err));
}
}
//
// Add the memory regions reserved by the UEFI Firmware
//
// Retrieve the UEFI Memory Map
MemoryMap = NULL;
MemoryMapSize = 0;
Status = gBS->GetMemoryMap (&MemoryMapSize, MemoryMap, &MapKey, &DescriptorSize, &DescriptorVersion);
if (Status == EFI_BUFFER_TOO_SMALL) {
// The UEFI specification advises to allocate more memory for the MemoryMap buffer between successive
// calls to GetMemoryMap(), since allocation of the new buffer may potentially increase memory map size.
Pages = EFI_SIZE_TO_PAGES (MemoryMapSize) + 1;
MemoryMap = AllocatePages (Pages);
if (MemoryMap == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto FAIL_COMPLETE_FDT;
}
Status = gBS->GetMemoryMap (&MemoryMapSize, MemoryMap, &MapKey, &DescriptorSize, &DescriptorVersion);
}
// Go through the list and add the reserved region to the Device Tree
if (!EFI_ERROR (Status)) {
MemoryMapPtr = MemoryMap;
for (Index = 0; Index < (MemoryMapSize / DescriptorSize); Index++) {
if (IsLinuxReservedRegion ((EFI_MEMORY_TYPE)MemoryMapPtr->Type)) {
DEBUG ((DEBUG_VERBOSE, "Reserved region of type %d [0x%lX, 0x%lX]\n",
MemoryMapPtr->Type,
(UINTN)MemoryMapPtr->PhysicalStart,
(UINTN)(MemoryMapPtr->PhysicalStart + MemoryMapPtr->NumberOfPages * EFI_PAGE_SIZE)));
err = fdt_add_mem_rsv (fdt, MemoryMapPtr->PhysicalStart, MemoryMapPtr->NumberOfPages * EFI_PAGE_SIZE);
if (err != 0) {
Print (L"Warning: Fail to add 'memreserve' (err:%d)\n", err);
}
}
MemoryMapPtr = (EFI_MEMORY_DESCRIPTOR*)((UINTN)MemoryMapPtr + DescriptorSize);
}
}
// Update the real size of the Device Tree
fdt_pack ((VOID*)(UINTN)(NewFdtBlobBase));
*FdtBlobBase = NewFdtBlobBase;
*FdtBlobSize = (UINTN)fdt_totalsize ((VOID*)(UINTN)(NewFdtBlobBase));
return EFI_SUCCESS;
FAIL_COMPLETE_FDT:
gBS->FreePages (NewFdtBlobAllocation, EFI_SIZE_TO_PAGES (NewFdtBlobSize));
FAIL_RELOCATE_FDT:
*FdtBlobSize = (UINTN)fdt_totalsize ((VOID*)(UINTN)(*FdtBlobBase));
// Return success even if we failed to update the FDT blob.
// The original one is still valid.
return EFI_SUCCESS;
}
struct data data_append_addr(struct data d, uint64_t addr)
{
uint64_t beaddr = cpu_to_fdt64(addr);
return data_append_data(d, &beaddr, sizeof(beaddr));
}
void
fdt_fixup_memory(struct fdt_mem_region *region, size_t num)
{
struct fdt_mem_region *curmr;
uint32_t addr_cells, size_cells;
uint32_t *addr_cellsp, *size_cellsp;
int err, i, len, memory, root;
size_t realmrno;
uint8_t *buf, *sb;
uint64_t rstart, rsize;
int reserved;
root = fdt_path_offset(fdtp, "/");
if (root < 0) {
sprintf(command_errbuf, "Could not find root node !");
return;
}
memory = fdt_path_offset(fdtp, "/memory");
if (memory <= 0) {
/* Create proper '/memory' node. */
memory = fdt_add_subnode(fdtp, root, "memory");
if (memory <= 0) {
sprintf(command_errbuf, "Could not fixup '/memory' "
"node, error code : %d!\n", memory);
return;
}
err = fdt_setprop(fdtp, memory, "device_type", "memory",
sizeof("memory"));
if (err < 0)
return;
}
addr_cellsp = (uint32_t *)fdt_getprop(fdtp, root, "#address-cells",
NULL);
size_cellsp = (uint32_t *)fdt_getprop(fdtp, root, "#size-cells", NULL);
if (addr_cellsp == NULL || size_cellsp == NULL) {
sprintf(command_errbuf, "Could not fixup '/memory' node : "
"%s %s property not found in root node!\n",
(!addr_cellsp) ? "#address-cells" : "",
(!size_cellsp) ? "#size-cells" : "");
return;
}
addr_cells = fdt32_to_cpu(*addr_cellsp);
size_cells = fdt32_to_cpu(*size_cellsp);
/*
* Convert memreserve data to memreserve property
* Check if property already exists
*/
reserved = fdt_num_mem_rsv(fdtp);
if (reserved &&
(fdt_getprop(fdtp, root, "memreserve", NULL) == NULL)) {
len = (addr_cells + size_cells) * reserved * sizeof(uint32_t);
sb = buf = (uint8_t *)malloc(len);
if (!buf)
return;
bzero(buf, len);
for (i = 0; i < reserved; i++) {
if (fdt_get_mem_rsv(fdtp, i, &rstart, &rsize))
break;
if (rsize) {
/* Ensure endianess, and put cells into a buffer */
if (addr_cells == 2)
*(uint64_t *)buf =
cpu_to_fdt64(rstart);
else
*(uint32_t *)buf =
cpu_to_fdt32(rstart);
buf += sizeof(uint32_t) * addr_cells;
if (size_cells == 2)
*(uint64_t *)buf =
cpu_to_fdt64(rsize);
else
*(uint32_t *)buf =
cpu_to_fdt32(rsize);
buf += sizeof(uint32_t) * size_cells;
}
}
/* Set property */
if ((err = fdt_setprop(fdtp, root, "memreserve", sb, len)) < 0)
printf("Could not fixup 'memreserve' property.\n");
free(sb);
}
/* Count valid memory regions entries in sysinfo. */
realmrno = num;
for (i = 0; i < num; i++)
if (region[i].start == 0 && region[i].size == 0)
realmrno--;
if (realmrno == 0) {
sprintf(command_errbuf, "Could not fixup '/memory' node : "
"sysinfo doesn't contain valid memory regions info!\n");
return;
}
len = (addr_cells + size_cells) * realmrno * sizeof(uint32_t);
sb = buf = (uint8_t *)malloc(len);
if (!buf)
return;
bzero(buf, len);
for (i = 0; i < num; i++) {
curmr = ®ion[i];
if (curmr->size != 0) {
/* Ensure endianess, and put cells into a buffer */
if (addr_cells == 2)
*(uint64_t *)buf =
cpu_to_fdt64(curmr->start);
else
*(uint32_t *)buf =
cpu_to_fdt32(curmr->start);
buf += sizeof(uint32_t) * addr_cells;
if (size_cells == 2)
*(uint64_t *)buf =
cpu_to_fdt64(curmr->size);
else
*(uint32_t *)buf =
cpu_to_fdt32(curmr->size);
buf += sizeof(uint32_t) * size_cells;
}
}
/* Set property */
if ((err = fdt_setprop(fdtp, memory, "reg", sb, len)) < 0)
sprintf(command_errbuf, "Could not fixup '/memory' node.\n");
free(sb);
}
