static void compare_mem_rsv(void *fdt1, void *fdt2)
{
int i;
uint64_t addr1, size1, addr2, size2;
int err;
if (fdt_num_mem_rsv(fdt1) != fdt_num_mem_rsv(fdt2))
MISMATCH("Trees have different number of reserve entries");
qsort((char *)fdt1 + fdt_off_mem_rsvmap(fdt1), fdt_num_mem_rsv(fdt1),
sizeof(struct fdt_reserve_entry), mem_rsv_cmp);
qsort((char *)fdt2 + fdt_off_mem_rsvmap(fdt2), fdt_num_mem_rsv(fdt2),
sizeof(struct fdt_reserve_entry), mem_rsv_cmp);
for (i = 0; i < fdt_num_mem_rsv(fdt1); i++) {
CHECK(fdt_get_mem_rsv(fdt1, i, &addr1, &size1));
CHECK(fdt_get_mem_rsv(fdt2, i, &addr2, &size2));
if ((addr1 != addr2) || (size1 != size2))
MISMATCH("Mismatch in reserve entry %d: "
"(0x%llx, 0x%llx) != (0x%llx, 0x%llx)", i,
(unsigned long long)addr1,
(unsigned long long)size1,
(unsigned long long)addr2,
(unsigned long long)size2);
}
}
static void __init early_print_info(void)
{
struct meminfo *mi = &bootinfo.mem;
struct bootmodules *mods = &bootinfo.modules;
int i, nr_rsvd;
for ( i = 0; i < mi->nr_banks; i++ )
printk("RAM: %"PRIpaddr" - %"PRIpaddr"\n",
mi->bank[i].start,
mi->bank[i].start + mi->bank[i].size - 1);
printk("\n");
for ( i = 0 ; i < mods->nr_mods; i++ )
printk("MODULE[%d]: %"PRIpaddr" - %"PRIpaddr" %-12s %s\n",
i,
mods->module[i].start,
mods->module[i].start + mods->module[i].size,
boot_module_kind_as_string(mods->module[i].kind),
mods->module[i].cmdline);
nr_rsvd = fdt_num_mem_rsv(device_tree_flattened);
for ( i = 0; i < nr_rsvd; i++ )
{
paddr_t s, e;
if ( fdt_get_mem_rsv(device_tree_flattened, i, &s, &e) < 0 )
continue;
/* fdt_get_mem_rsv returns length */
e += s;
printk(" RESVD[%d]: %"PRIpaddr" - %"PRIpaddr"\n",
i, s, e);
}
printk("\n");
}
static void dt_unreserved_regions(paddr_t s, paddr_t e,
void (*cb)(paddr_t, paddr_t), int first)
{
int i, nr = fdt_num_mem_rsv(device_tree_flattened);
for ( i = first; i < nr ; i++ )
{
paddr_t r_s, r_e;
if ( fdt_get_mem_rsv(device_tree_flattened, i, &r_s, &r_e ) < 0 )
/* If we can't read it, pretend it doesn't exist... */
continue;
r_e += r_s; /* fdt_get_mem_rsc returns length */
if ( s < r_e && r_s < e )
{
dt_unreserved_regions(r_e, e, cb, i+1);
dt_unreserved_regions(s, r_s, cb, i+1);
return;
}
}
cb(s, e);
}
int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end)
{
int nodeoffset;
int err, j, total;
int is_u64;
uint64_t addr, size;
/* just return if the size of initrd is zero */
if (initrd_start == initrd_end)
return 0;
/* find or create "/chosen" node. */
nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen");
if (nodeoffset < 0)
return nodeoffset;
total = fdt_num_mem_rsv(fdt);
/*
* Look for an existing entry and update it. If we don't find
* the entry, we will j be the next available slot.
*/
for (j = 0; j < total; j++) {
err = fdt_get_mem_rsv(fdt, j, &addr, &size);
if (addr == initrd_start) {
fdt_del_mem_rsv(fdt, j);
break;
}
}
err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start);
if (err < 0) {
printf("fdt_initrd: %s\n", fdt_strerror(err));
return err;
}
is_u64 = (fdt_address_cells(fdt, 0) == 2);
err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-start",
(uint64_t)initrd_start, is_u64);
if (err < 0) {
printf("WARNING: could not set linux,initrd-start %s.\n",
fdt_strerror(err));
return err;
}
err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-end",
(uint64_t)initrd_end, is_u64);
if (err < 0) {
printf("WARNING: could not set linux,initrd-end %s.\n",
fdt_strerror(err));
return err;
}
return 0;
}
/*
* Returns the end address of the highest region in the range s..e
* with required size and alignment that does not conflict with the
* modules from first_mod to nr_modules.
*
* For non-recursive callers first_mod should normally be 0 (all
* modules and Xen itself) or 1 (all modules but not Xen).
*/
static paddr_t __init consider_modules(paddr_t s, paddr_t e,
uint32_t size, paddr_t align,
int first_mod)
{
const struct dt_module_info *mi = &early_info.modules;
int i;
int nr_rsvd;
s = (s+align-1) & ~(align-1);
e = e & ~(align-1);
if ( s > e || e - s < size )
return 0;
/* First check the boot modules */
for ( i = first_mod; i <= mi->nr_mods; i++ )
{
paddr_t mod_s = mi->module[i].start;
paddr_t mod_e = mod_s + mi->module[i].size;
if ( s < mod_e && mod_s < e )
{
mod_e = consider_modules(mod_e, e, size, align, i+1);
if ( mod_e )
return mod_e;
return consider_modules(s, mod_s, size, align, i+1);
}
}
/* Now check any fdt reserved areas. */
nr_rsvd = fdt_num_mem_rsv(device_tree_flattened);
for ( ; i < mi->nr_mods + nr_rsvd; i++ )
{
paddr_t mod_s, mod_e;
if ( fdt_get_mem_rsv(device_tree_flattened,
i - mi->nr_mods,
&mod_s, &mod_e ) < 0 )
/* If we can't read it, pretend it doesn't exist... */
continue;
/* fdt_get_mem_rsv returns length */
mod_e += mod_s;
if ( s < mod_e && mod_s < e )
{
mod_e = consider_modules(mod_e, e, size, align, i+1);
if ( mod_e )
return mod_e;
return consider_modules(s, mod_s, size, align, i+1);
}
}
return e;
}
static void compare_mem_rsv(const void *fdt1, const void *fdt2)
{
int i;
uint64_t addr1, size1, addr2, size2;
int err;
if (fdt_num_mem_rsv(fdt1) != fdt_num_mem_rsv(fdt2))
MISMATCH("Trees have different number of reserve entries");
for (i = 0; i < fdt_num_mem_rsv(fdt1); i++) {
CHECK(fdt_get_mem_rsv(fdt1, i, &addr1, &size1));
CHECK(fdt_get_mem_rsv(fdt2, i, &addr2, &size2));
if ((addr1 != addr2) || (size1 != size2))
MISMATCH("Mismatch in reserve entry %d: "
"(0x%llx, 0x%llx) != (0x%llx, 0x%llx)", i,
(unsigned long long)addr1,
(unsigned long long)size1,
(unsigned long long)addr2,
(unsigned long long)size2);
}
}
/**
* boot_fdt_add_mem_rsv_regions - Mark the memreserve sections as unusable
* @lmb: pointer to lmb handle, will be used for memory mgmt
* @fdt_blob: pointer to fdt blob base address
*
* Adds the memreserve regions in the dtb to the lmb block. Adding the
* memreserve regions prevents u-boot from using them to store the initrd
* or the fdt blob.
*/
void boot_fdt_add_mem_rsv_regions(struct lmb *lmb, void *fdt_blob)
{
uint64_t addr, size;
int i, total;
if (fdt_check_header(fdt_blob) != 0)
return;
total = fdt_num_mem_rsv(fdt_blob);
for (i = 0; i < total; i++) {
if (fdt_get_mem_rsv(fdt_blob, i, &addr, &size) != 0)
continue;
printf(" reserving fdt memory region: addr=%llx size=%llx\n",
(unsigned long long)addr, (unsigned long long)size);
lmb_reserve(lmb, addr, size);
}
}
/**
* early_init_fdt_scan_reserved_mem() - create reserved memory regions
*
* This function grabs memory from early allocator for device exclusive use
* defined in device tree structures. It should be called by arch specific code
* once the early allocator (i.e. memblock) has been fully activated.
*/
void __init early_init_fdt_scan_reserved_mem(void)
{
int n;
u64 base, size;
if (!initial_boot_params)
return;
/* Process header /memreserve/ fields */
for (n = 0; ; n++) {
fdt_get_mem_rsv(initial_boot_params, n, &base, &size);
if (!size)
break;
early_init_dt_reserve_memory_arch(base, size, 0);
}
of_scan_flat_dt(__fdt_scan_reserved_mem, NULL);
fdt_init_reserved_mem();
}
/* Resize the fdt to its actual size + a bit of padding */
int fdt_shrink_to_minimum(void *blob, uint extrasize)
{
int i;
uint64_t addr, size;
int total, ret;
uint actualsize;
if (!blob)
return 0;
total = fdt_num_mem_rsv(blob);
for (i = 0; i < total; i++) {
fdt_get_mem_rsv(blob, i, &addr, &size);
if (addr == (uintptr_t)blob) {
fdt_del_mem_rsv(blob, i);
break;
}
}
/*
* Calculate the actual size of the fdt
* plus the size needed for 5 fdt_add_mem_rsv, one
* for the fdt itself and 4 for a possible initrd
* ((initrd-start + initrd-end) * 2 (name & value))
*/
actualsize = fdt_off_dt_strings(blob) +
fdt_size_dt_strings(blob) + 5 * sizeof(struct fdt_reserve_entry);
actualsize += extrasize;
/* Make it so the fdt ends on a page boundary */
actualsize = ALIGN(actualsize + ((uintptr_t)blob & 0xfff), 0x1000);
actualsize = actualsize - ((uintptr_t)blob & 0xfff);
/* Change the fdt header to reflect the correct size */
fdt_set_totalsize(blob, actualsize);
/* Add the new reservation */
ret = fdt_add_mem_rsv(blob, (uintptr_t)blob, actualsize);
if (ret < 0)
return ret;
return actualsize;
}
/**
* early_init_fdt_scan_reserved_mem() - create reserved memory regions
*
* This function grabs memory from early allocator for device exclusive use
* defined in device tree structures. It should be called by arch specific code
* once the early allocator (i.e. memblock) has been fully activated.
*/
void __init early_init_fdt_scan_reserved_mem(void)
{
int n;
u64 base, size;
if (!initial_boot_params)
return;
/* Reserve the dtb region */
// boot_param = dtb 시작 영역(가상주소)
// dtb 영역을 reserved영역으로 잡아줌.
early_init_dt_reserve_memory_arch(__pa(initial_boot_params), // DTB(fdt header. structure block, ..., string block)영역 전체를 reserved 영역으로 잡아줌,
fdt_totalsize(initial_boot_params),
0);
/*
* End Driving ...
*
* 2016. 05. 14. (토) 18:13:02 KST
* name : sim man seop
*
* */
/* Sat May 21 15:36:17 KST 2016
* name : daehee
* Start Driving ...
*
*/
// DBT가 컴파일되서 바이너리로 생성되어 FDT형태로 메모리에 적재된다.
/* Process header /memreserve/ fields */
for (n = 0; ; n++) {
fdt_get_mem_rsv(initial_boot_params, n, &base, &size); // FDT내의 memory reservation region내에 주소와 사이즈가 있는데, 주소를 따라가서 reserved 영역으로 만들어 줌,
if (!size)
break;
early_init_dt_reserve_memory_arch(base, size, 0);
}
of_scan_flat_dt(__fdt_scan_reserved_mem, NULL);
fdt_init_reserved_mem();
}
int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force)
{
int nodeoffset;
int err, j, total;
u32 tmp;
const char *path;
uint64_t addr, size;
/* Find the "chosen" node. */
nodeoffset = fdt_path_offset (fdt, "/chosen");
/* If there is no "chosen" node in the blob return */
if (nodeoffset < 0) {
printf("fdt_initrd: %s\n", fdt_strerror(nodeoffset));
return nodeoffset;
}
/* just return if initrd_start/end aren't valid */
if ((initrd_start == 0) || (initrd_end == 0))
return 0;
total = fdt_num_mem_rsv(fdt);
/*
* Look for an existing entry and update it. If we don't find
* the entry, we will j be the next available slot.
*/
for (j = 0; j < total; j++) {
err = fdt_get_mem_rsv(fdt, j, &addr, &size);
if (addr == initrd_start) {
fdt_del_mem_rsv(fdt, j);
break;
}
}
err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start + 1);
if (err < 0) {
printf("fdt_initrd: %s\n", fdt_strerror(err));
return err;
}
path = fdt_getprop(fdt, nodeoffset, "linux,initrd-start", NULL);
if ((path == NULL) || force) {
tmp = __cpu_to_be32(initrd_start);
err = fdt_setprop(fdt, nodeoffset,
"linux,initrd-start", &tmp, sizeof(tmp));
if (err < 0) {
printf("WARNING: "
"could not set linux,initrd-start %s.\n",
fdt_strerror(err));
return err;
}
tmp = __cpu_to_be32(initrd_end);
err = fdt_setprop(fdt, nodeoffset,
"linux,initrd-end", &tmp, sizeof(tmp));
if (err < 0) {
printf("WARNING: could not set linux,initrd-end %s.\n",
fdt_strerror(err));
return err;
}
}
return 0;
}
void dt_platform_init_fdt(void *fdt)
{
int rv;
system_fdt = fdt;
printf("fdt_platform_init %p\n", fdt);
// Check header
if ((rv = fdt_check_header(fdt))) {
panic("Bad FDT: %s\n", fdt_strerror(rv));
}
// Process memory reservations
printf("rsv %p\n", fdt);
int num_rsv = fdt_num_mem_rsv(fdt);
for (int i = 0; i < num_rsv; i++) {
printf("get\n");
gd_memory_map_entry ent;
ent.type = gd_reserved_memory_type;
ent.attributes = 0;
fdt_get_mem_rsv(fdt, i, &ent.physical_start, &ent.size);
printf("got\n");
ent.virtual_start = ent.physical_start;
printf("Adding reserved memory region: %" PRIX64 " len=%" PRIX64 "\n",
ent.physical_start, ent.size);
mmap_add_entry(ent);
}
// Process root note memory entries
printf("root\n");
int root = fdt_next_node(fdt, -1, NULL);
unsigned addr_cells = fdt_address_cells(fdt, root);
unsigned size_cells = fdt_size_cells(fdt, root);
unsigned cells = addr_cells + size_cells;
int mem_offs = fdt_subnode_offset(fdt, root, "memory");
if (mem_offs < 0) {
panic("Unable to locate memory node (%s)\n", fdt_strerror(mem_offs));
}
int memlen;
const uint32_t *p = fdt_getprop(system_fdt, mem_offs, "reg", &memlen);
for (int i = 0; i < memlen / 4; i+= cells) {
uint64_t base_addr = 0, base_size = 0;
if (addr_cells == 1) {
base_addr = fdt32_to_cpu(p[i]);
} else if (addr_cells == 2) {
base_addr = fdt64_to_cpu(((uint64_t) p[i + 1]) << 32 | p[i]);
}
if (size_cells == 1) {
base_size = fdt32_to_cpu(p[i + addr_cells]);
} else if (size_cells == 2) {
base_size = fdt64_to_cpu(((uint64_t) p[i + addr_cells + 1]) << 32
| p[i + addr_cells]);
}
printf("Adding memory range %16" PRIX64 " len %16" PRIX64 "\n",
base_addr, base_size);
gd_memory_map_entry ent = { 0 };
ent.type = gd_conventional_memory;
ent.attributes = 0;
ent.virtual_start = ent.physical_start = base_addr;
ent.size = base_size;
mmap_add_entry(ent);
}
dt_root = add_device_fdt(NULL, fdt, root, 0);
}
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, *reg, *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;
}
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 < 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);
}
STATIC
VOID
DumpFdt (
IN VOID* FdtBlob
)
{
struct fdt_header *bph;
UINT32 off_dt;
UINT32 off_str;
CONST CHAR8* p_struct;
CONST CHAR8* p_strings;
CONST CHAR8* p;
CONST CHAR8* s;
CONST CHAR8* t;
UINT32 tag;
UINTN sz;
UINTN depth;
UINTN shift;
UINT32 version;
{
// Can 'memreserve' be printed by below code?
INTN num = fdt_num_mem_rsv (FdtBlob);
INTN i, err;
UINT64 addr = 0, size = 0;
for (i = 0; i < num; i++) {
err = fdt_get_mem_rsv (FdtBlob, i, &addr, &size);
if (err) {
DEBUG ((EFI_D_ERROR, "Error (%d) : Cannot get memreserve section (%d)\n", err, i));
}
else {
Print (L"/memreserve/ \t0x%lx \t0x%lx;\n", addr, size);
}
}
}
depth = 0;
shift = 4;
bph = FdtBlob;
off_dt = fdt32_to_cpu (bph->off_dt_struct);
off_str = fdt32_to_cpu (bph->off_dt_strings);
p_struct = (CONST CHAR8*)FdtBlob + off_dt;
p_strings = (CONST CHAR8*)FdtBlob + off_str;
version = fdt32_to_cpu (bph->version);
p = p_struct;
while ((tag = fdt32_to_cpu (GET_CELL (p))) != FDT_END) {
if (tag == FDT_BEGIN_NODE) {
s = p;
p = PALIGN (p + AsciiStrLen (s) + 1, 4);
if (*s == '\0')
s = "/";
Print (L"%*s%a {\n", depth * shift, L" ", s);
depth++;
continue;
}
if (tag == FDT_END_NODE) {
depth--;
Print (L"%*s};\n", depth * shift, L" ");
continue;
}
if (tag == FDT_NOP) {
Print (L"%*s// [NOP]\n", depth * shift, L" ");
continue;
}
if (tag != FDT_PROP) {
Print (L"%*s ** Unknown tag 0x%08x\n", depth * shift, L" ", tag);
break;
}
sz = fdt32_to_cpu (GET_CELL (p));
s = p_strings + fdt32_to_cpu (GET_CELL (p));
if (version < 16 && sz >= 8)
p = PALIGN (p, 8);
t = p;
p = PALIGN (p + sz, 4);
Print (L"%*s%a", depth * shift, L" ", s);
PrintData (t, sz);
Print (L";\n");
}
}
/*
* Flattened Device Tree command, see the help for parameter definitions.
*/
int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
if (argc < 2) {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
/********************************************************************
* Set the address of the fdt
********************************************************************/
if (argv[1][0] == 'a') {
/*
* Set the address [and length] of the fdt.
*/
if (argc == 2) {
if (!fdt_valid()) {
return 1;
}
printf("The address of the fdt is %p\n", working_fdt);
return 0;
}
working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
if (!fdt_valid()) {
return 1;
}
if (argc >= 4) {
int len;
int err;
/*
* Optional new length
*/
len = simple_strtoul(argv[3], NULL, 16);
if (len < fdt_totalsize(working_fdt)) {
printf ("New length %d < existing length %d, "
"ignoring.\n",
len, fdt_totalsize(working_fdt));
} else {
/*
* Open in place with a new length.
*/
err = fdt_open_into(working_fdt, working_fdt, len);
if (err != 0) {
printf ("libfdt fdt_open_into(): %s\n",
fdt_strerror(err));
}
}
}
/********************************************************************
* Move the working_fdt
********************************************************************/
} else if (strncmp(argv[1], "mo", 2) == 0) {
struct fdt_header *newaddr;
int len;
int err;
if (argc < 4) {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
/*
* Set the address and length of the fdt.
*/
working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
if (!fdt_valid()) {
return 1;
}
newaddr = (struct fdt_header *)simple_strtoul(argv[3],NULL,16);
/*
* If the user specifies a length, use that. Otherwise use the
* current length.
*/
if (argc <= 4) {
len = fdt_totalsize(working_fdt);
} else {
len = simple_strtoul(argv[4], NULL, 16);
if (len < fdt_totalsize(working_fdt)) {
printf ("New length 0x%X < existing length "
"0x%X, aborting.\n",
len, fdt_totalsize(working_fdt));
return 1;
}
}
/*
* Copy to the new location.
*/
err = fdt_open_into(working_fdt, newaddr, len);
if (err != 0) {
printf ("libfdt fdt_open_into(): %s\n",
fdt_strerror(err));
return 1;
}
working_fdt = newaddr;
/********************************************************************
* Make a new node
********************************************************************/
} else if (strncmp(argv[1], "mk", 2) == 0) {
char *pathp; /* path */
char *nodep; /* new node to add */
int nodeoffset; /* node offset from libfdt */
int err;
/*
* Parameters: Node path, new node to be appended to the path.
*/
if (argc < 4) {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
pathp = argv[2];
nodep = argv[3];
nodeoffset = fdt_path_offset (working_fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt fdt_path_offset() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
err = fdt_add_subnode(working_fdt, nodeoffset, nodep);
if (err < 0) {
printf ("libfdt fdt_add_subnode(): %s\n",
fdt_strerror(err));
return 1;
}
/********************************************************************
* Set the value of a property in the working_fdt.
********************************************************************/
} else if (argv[1][0] == 's') {
char *pathp; /* path */
char *prop; /* property */
int nodeoffset; /* node offset from libfdt */
static char data[SCRATCHPAD]; /* storage for the property */
int len; /* new length of the property */
int ret; /* return value */
/*
* Parameters: Node path, property, optional value.
*/
if (argc < 4) {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
pathp = argv[2];
prop = argv[3];
if (argc == 4) {
len = 0;
} else {
ret = fdt_parse_prop(&argv[4], argc - 4, data, &len);
if (ret != 0)
return ret;
}
nodeoffset = fdt_path_offset (working_fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt fdt_path_offset() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
ret = fdt_setprop(working_fdt, nodeoffset, prop, data, len);
if (ret < 0) {
printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret));
return 1;
}
/********************************************************************
* Print (recursive) / List (single level)
********************************************************************/
} else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
int depth = MAX_LEVEL; /* how deep to print */
char *pathp; /* path */
char *prop; /* property */
int ret; /* return value */
static char root[2] = "/";
/*
* list is an alias for print, but limited to 1 level
*/
if (argv[1][0] == 'l') {
depth = 1;
}
/*
* Get the starting path. The root node is an oddball,
* the offset is zero and has no name.
*/
if (argc == 2)
pathp = root;
else
pathp = argv[2];
if (argc > 3)
prop = argv[3];
else
prop = NULL;
ret = fdt_print(pathp, prop, depth);
if (ret != 0)
return ret;
/********************************************************************
* Remove a property/node
********************************************************************/
} else if (strncmp(argv[1], "rm", 2) == 0) {
int nodeoffset; /* node offset from libfdt */
int err;
/*
* Get the path. The root node is an oddball, the offset
* is zero and has no name.
*/
nodeoffset = fdt_path_offset (working_fdt, argv[2]);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt fdt_path_offset() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
/*
* Do the delete. A fourth parameter means delete a property,
* otherwise delete the node.
*/
if (argc > 3) {
err = fdt_delprop(working_fdt, nodeoffset, argv[3]);
if (err < 0) {
printf("libfdt fdt_delprop(): %s\n",
fdt_strerror(err));
return err;
}
} else {
err = fdt_del_node(working_fdt, nodeoffset);
if (err < 0) {
printf("libfdt fdt_del_node(): %s\n",
fdt_strerror(err));
return err;
}
}
/********************************************************************
* Display header info
********************************************************************/
} else if (argv[1][0] == 'h') {
u32 version = fdt_version(working_fdt);
printf("magic:\t\t\t0x%x\n", fdt_magic(working_fdt));
printf("totalsize:\t\t0x%x (%d)\n", fdt_totalsize(working_fdt),
fdt_totalsize(working_fdt));
printf("off_dt_struct:\t\t0x%x\n",
fdt_off_dt_struct(working_fdt));
printf("off_dt_strings:\t\t0x%x\n",
fdt_off_dt_strings(working_fdt));
printf("off_mem_rsvmap:\t\t0x%x\n",
fdt_off_mem_rsvmap(working_fdt));
printf("version:\t\t%d\n", version);
printf("last_comp_version:\t%d\n",
fdt_last_comp_version(working_fdt));
if (version >= 2)
printf("boot_cpuid_phys:\t0x%x\n",
fdt_boot_cpuid_phys(working_fdt));
if (version >= 3)
printf("size_dt_strings:\t0x%x\n",
fdt_size_dt_strings(working_fdt));
if (version >= 17)
printf("size_dt_struct:\t\t0x%x\n",
fdt_size_dt_struct(working_fdt));
printf("number mem_rsv:\t\t0x%x\n",
fdt_num_mem_rsv(working_fdt));
printf("\n");
/********************************************************************
* Set boot cpu id
********************************************************************/
} else if (strncmp(argv[1], "boo", 3) == 0) {
unsigned long tmp = simple_strtoul(argv[2], NULL, 16);
fdt_set_boot_cpuid_phys(working_fdt, tmp);
/********************************************************************
* memory command
********************************************************************/
} else if (strncmp(argv[1], "me", 2) == 0) {
uint64_t addr, size;
int err;
#ifdef CFG_64BIT_STRTOUL
addr = simple_strtoull(argv[2], NULL, 16);
size = simple_strtoull(argv[3], NULL, 16);
#else
addr = simple_strtoul(argv[2], NULL, 16);
size = simple_strtoul(argv[3], NULL, 16);
#endif
err = fdt_fixup_memory(working_fdt, addr, size);
if (err < 0)
return err;
/********************************************************************
* mem reserve commands
********************************************************************/
} else if (strncmp(argv[1], "rs", 2) == 0) {
if (argv[2][0] == 'p') {
uint64_t addr, size;
int total = fdt_num_mem_rsv(working_fdt);
int j, err;
printf("index\t\t start\t\t size\n");
printf("-------------------------------"
"-----------------\n");
for (j = 0; j < total; j++) {
err = fdt_get_mem_rsv(working_fdt, j, &addr, &size);
if (err < 0) {
printf("libfdt fdt_get_mem_rsv(): %s\n",
fdt_strerror(err));
return err;
}
printf(" %x\t%08x%08x\t%08x%08x\n", j,
(u32)(addr >> 32),
(u32)(addr & 0xffffffff),
(u32)(size >> 32),
(u32)(size & 0xffffffff));
}
} else if (argv[2][0] == 'a') {
/*
* Flattened Device Tree command, see the help for parameter definitions.
*/
static int do_fdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
if (argc < 2)
return CMD_RET_USAGE;
/*
* Set the address of the fdt
*/
if (strncmp(argv[1], "ad", 2) == 0) {
unsigned long addr;
int control = 0;
struct fdt_header *blob;
/*
* Set the address [and length] of the fdt.
*/
argc -= 2;
argv += 2;
/* Temporary #ifdef - some archs don't have fdt_blob yet */
#ifdef CONFIG_OF_CONTROL
if (argc && !strcmp(*argv, "-c")) {
control = 1;
argc--;
argv++;
}
#endif
if (argc == 0) {
if (control)
blob = (struct fdt_header *)gd->fdt_blob;
else
blob = working_fdt;
if (!blob || !fdt_valid(&blob))
return 1;
printf("The address of the fdt is %#08lx\n",
control ? (ulong)map_to_sysmem(blob) :
getenv_hex("fdtaddr", 0));
return 0;
}
addr = simple_strtoul(argv[0], NULL, 16);
blob = map_sysmem(addr, 0);
if (!fdt_valid(&blob))
return 1;
if (control)
gd->fdt_blob = blob;
else
set_working_fdt_addr(addr);
if (argc >= 2) {
int len;
int err;
/*
* Optional new length
*/
len = simple_strtoul(argv[1], NULL, 16);
if (len < fdt_totalsize(blob)) {
printf ("New length %d < existing length %d, "
"ignoring.\n",
len, fdt_totalsize(blob));
} else {
/*
* Open in place with a new length.
*/
err = fdt_open_into(blob, blob, len);
if (err != 0) {
printf ("libfdt fdt_open_into(): %s\n",
fdt_strerror(err));
}
}
}
return CMD_RET_SUCCESS;
}
if (!working_fdt) {
puts(
"No FDT memory address configured. Please configure\n"
"the FDT address via \"fdt addr <address>\" command.\n"
"Aborting!\n");
return CMD_RET_FAILURE;
}
/*
* Move the working_fdt
*/
if (strncmp(argv[1], "mo", 2) == 0) {
struct fdt_header *newaddr;
int len;
int err;
if (argc < 4)
return CMD_RET_USAGE;
/*
* Set the address and length of the fdt.
*/
working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16);
if (!fdt_valid(&working_fdt))
return 1;
newaddr = (struct fdt_header *)simple_strtoul(argv[3],NULL,16);
/*
* If the user specifies a length, use that. Otherwise use the
* current length.
*/
if (argc <= 4) {
len = fdt_totalsize(working_fdt);
} else {
len = simple_strtoul(argv[4], NULL, 16);
if (len < fdt_totalsize(working_fdt)) {
printf ("New length 0x%X < existing length "
"0x%X, aborting.\n",
len, fdt_totalsize(working_fdt));
return 1;
}
}
/*
* Copy to the new location.
*/
err = fdt_open_into(working_fdt, newaddr, len);
if (err != 0) {
printf ("libfdt fdt_open_into(): %s\n",
fdt_strerror(err));
return 1;
}
working_fdt = newaddr;
/*
* Make a new node
*/
} else if (strncmp(argv[1], "mk", 2) == 0) {
char *pathp; /* path */
char *nodep; /* new node to add */
int nodeoffset; /* node offset from libfdt */
int err;
/*
* Parameters: Node path, new node to be appended to the path.
*/
if (argc < 4)
return CMD_RET_USAGE;
pathp = argv[2];
nodep = argv[3];
nodeoffset = fdt_path_offset (working_fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt fdt_path_offset() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
err = fdt_add_subnode(working_fdt, nodeoffset, nodep);
if (err < 0) {
printf ("libfdt fdt_add_subnode(): %s\n",
fdt_strerror(err));
return 1;
}
/*
* Set the value of a property in the working_fdt.
*/
} else if (argv[1][0] == 's') {
char *pathp; /* path */
char *prop; /* property */
int nodeoffset; /* node offset from libfdt */
static char data[SCRATCHPAD]; /* storage for the property */
int len; /* new length of the property */
int ret; /* return value */
/*
* Parameters: Node path, property, optional value.
*/
if (argc < 4)
return CMD_RET_USAGE;
pathp = argv[2];
prop = argv[3];
if (argc == 4) {
len = 0;
} else {
ret = fdt_parse_prop(&argv[4], argc - 4, data, &len);
if (ret != 0)
return ret;
}
nodeoffset = fdt_path_offset (working_fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt fdt_path_offset() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
ret = fdt_setprop(working_fdt, nodeoffset, prop, data, len);
if (ret < 0) {
printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret));
return 1;
}
/********************************************************************
* Get the value of a property in the working_fdt.
********************************************************************/
} else if (argv[1][0] == 'g') {
char *subcmd; /* sub-command */
char *pathp; /* path */
char *prop; /* property */
char *var; /* variable to store result */
int nodeoffset; /* node offset from libfdt */
const void *nodep; /* property node pointer */
int len = 0; /* new length of the property */
/*
* Parameters: Node path, property, optional value.
*/
if (argc < 5)
return CMD_RET_USAGE;
subcmd = argv[2];
if (argc < 6 && subcmd[0] != 's')
return CMD_RET_USAGE;
var = argv[3];
pathp = argv[4];
prop = argv[5];
nodeoffset = fdt_path_offset(working_fdt, pathp);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf("libfdt fdt_path_offset() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
if (subcmd[0] == 'n' || (subcmd[0] == 's' && argc == 5)) {
int reqIndex = -1;
int startDepth = fdt_node_depth(
working_fdt, nodeoffset);
int curDepth = startDepth;
int curIndex = -1;
int nextNodeOffset = fdt_next_node(
working_fdt, nodeoffset, &curDepth);
if (subcmd[0] == 'n')
reqIndex = simple_strtoul(argv[5], NULL, 16);
while (curDepth > startDepth) {
if (curDepth == startDepth + 1)
curIndex++;
if (subcmd[0] == 'n' && curIndex == reqIndex) {
const char *nodeName = fdt_get_name(
working_fdt, nextNodeOffset, NULL);
setenv(var, (char *)nodeName);
return 0;
}
nextNodeOffset = fdt_next_node(
working_fdt, nextNodeOffset, &curDepth);
if (nextNodeOffset < 0)
break;
}
if (subcmd[0] == 's') {
/* get the num nodes at this level */
setenv_ulong(var, curIndex + 1);
} else {
/* node index not found */
printf("libfdt node not found\n");
return 1;
}
} else {
nodep = fdt_getprop(
working_fdt, nodeoffset, prop, &len);
if (len == 0) {
/* no property value */
setenv(var, "");
return 0;
} else if (len > 0) {
if (subcmd[0] == 'v') {
int ret;
ret = fdt_value_setenv(nodep, len, var);
if (ret != 0)
return ret;
} else if (subcmd[0] == 'a') {
/* Get address */
char buf[11];
sprintf(buf, "0x%p", nodep);
setenv(var, buf);
} else if (subcmd[0] == 's') {
/* Get size */
char buf[11];
sprintf(buf, "0x%08X", len);
setenv(var, buf);
} else
return CMD_RET_USAGE;
return 0;
} else {
printf("libfdt fdt_getprop(): %s\n",
fdt_strerror(len));
return 1;
}
}
/*
* Print (recursive) / List (single level)
*/
} else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
int depth = MAX_LEVEL; /* how deep to print */
char *pathp; /* path */
char *prop; /* property */
int ret; /* return value */
static char root[2] = "/";
/*
* list is an alias for print, but limited to 1 level
*/
if (argv[1][0] == 'l') {
depth = 1;
}
/*
* Get the starting path. The root node is an oddball,
* the offset is zero and has no name.
*/
if (argc == 2)
pathp = root;
else
pathp = argv[2];
if (argc > 3)
prop = argv[3];
else
prop = NULL;
ret = fdt_print(pathp, prop, depth);
if (ret != 0)
return ret;
/*
* Remove a property/node
*/
} else if (strncmp(argv[1], "rm", 2) == 0) {
int nodeoffset; /* node offset from libfdt */
int err;
/*
* Get the path. The root node is an oddball, the offset
* is zero and has no name.
*/
nodeoffset = fdt_path_offset (working_fdt, argv[2]);
if (nodeoffset < 0) {
/*
* Not found or something else bad happened.
*/
printf ("libfdt fdt_path_offset() returned %s\n",
fdt_strerror(nodeoffset));
return 1;
}
/*
* Do the delete. A fourth parameter means delete a property,
* otherwise delete the node.
*/
if (argc > 3) {
err = fdt_delprop(working_fdt, nodeoffset, argv[3]);
if (err < 0) {
printf("libfdt fdt_delprop(): %s\n",
fdt_strerror(err));
return err;
}
} else {
err = fdt_del_node(working_fdt, nodeoffset);
if (err < 0) {
printf("libfdt fdt_del_node(): %s\n",
fdt_strerror(err));
return err;
}
}
/*
* Display header info
*/
} else if (argv[1][0] == 'h') {
u32 version = fdt_version(working_fdt);
printf("magic:\t\t\t0x%x\n", fdt_magic(working_fdt));
printf("totalsize:\t\t0x%x (%d)\n", fdt_totalsize(working_fdt),
fdt_totalsize(working_fdt));
printf("off_dt_struct:\t\t0x%x\n",
fdt_off_dt_struct(working_fdt));
printf("off_dt_strings:\t\t0x%x\n",
fdt_off_dt_strings(working_fdt));
printf("off_mem_rsvmap:\t\t0x%x\n",
fdt_off_mem_rsvmap(working_fdt));
printf("version:\t\t%d\n", version);
printf("last_comp_version:\t%d\n",
fdt_last_comp_version(working_fdt));
if (version >= 2)
printf("boot_cpuid_phys:\t0x%x\n",
fdt_boot_cpuid_phys(working_fdt));
if (version >= 3)
printf("size_dt_strings:\t0x%x\n",
fdt_size_dt_strings(working_fdt));
if (version >= 17)
printf("size_dt_struct:\t\t0x%x\n",
fdt_size_dt_struct(working_fdt));
printf("number mem_rsv:\t\t0x%x\n",
fdt_num_mem_rsv(working_fdt));
printf("\n");
/*
* Set boot cpu id
*/
} else if (strncmp(argv[1], "boo", 3) == 0) {
unsigned long tmp = simple_strtoul(argv[2], NULL, 16);
fdt_set_boot_cpuid_phys(working_fdt, tmp);
/*
* memory command
*/
} else if (strncmp(argv[1], "me", 2) == 0) {
uint64_t addr, size;
int err;
addr = simple_strtoull(argv[2], NULL, 16);
size = simple_strtoull(argv[3], NULL, 16);
err = fdt_fixup_memory(working_fdt, addr, size);
if (err < 0)
return err;
/*
* mem reserve commands
*/
} else if (strncmp(argv[1], "rs", 2) == 0) {
if (argv[2][0] == 'p') {
uint64_t addr, size;
int total = fdt_num_mem_rsv(working_fdt);
int j, err;
printf("index\t\t start\t\t size\n");
printf("-------------------------------"
"-----------------\n");
for (j = 0; j < total; j++) {
err = fdt_get_mem_rsv(working_fdt, j, &addr, &size);
if (err < 0) {
printf("libfdt fdt_get_mem_rsv(): %s\n",
fdt_strerror(err));
return err;
}
printf(" %x\t%08x%08x\t%08x%08x\n", j,
(u32)(addr >> 32),
(u32)(addr & 0xffffffff),
(u32)(size >> 32),
(u32)(size & 0xffffffff));
}
} else if (argv[2][0] == 'a') {
int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
{
int nodeoffset;
int err;
u32 tmp; /* used to set 32 bit integer properties */
char *str; /* used to set string properties */
err = fdt_check_header(fdt);
if (err < 0) {
printf("fdt_chosen: %s\n", fdt_strerror(err));
return err;
}
if (initrd_start && initrd_end) {
uint64_t addr, size;
int total = fdt_num_mem_rsv(fdt);
int j;
/*
* Look for an existing entry and update it. If we don't find
* the entry, we will j be the next available slot.
*/
for (j = 0; j < total; j++) {
err = fdt_get_mem_rsv(fdt, j, &addr, &size);
if (addr == initrd_start) {
fdt_del_mem_rsv(fdt, j);
break;
}
}
err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start + 1);
if (err < 0) {
printf("fdt_chosen: %s\n", fdt_strerror(err));
return err;
}
}
/*
* Find the "chosen" node.
*/
nodeoffset = fdt_path_offset (fdt, "/chosen");
/*
* If we have a "chosen" node already the "force the writing"
* is not set, our job is done.
*/
if ((nodeoffset >= 0) && !force)
return 0;
/*
* No "chosen" node in the blob: create it.
*/
if (nodeoffset < 0) {
/*
* Create a new node "/chosen" (offset 0 is root level)
*/
nodeoffset = fdt_add_subnode(fdt, 0, "chosen");
if (nodeoffset < 0) {
printf("WARNING: could not create /chosen %s.\n",
fdt_strerror(nodeoffset));
return nodeoffset;
}
}
/*
* Update pre-existing properties, create them if non-existant.
*/
str = getenv("bootargs");
if (str != NULL) {
err = fdt_setprop(fdt, nodeoffset,
"bootargs", str, strlen(str)+1);
if (err < 0)
printf("WARNING: could not set bootargs %s.\n",
fdt_strerror(err));
}
if (initrd_start && initrd_end) {
tmp = __cpu_to_be32(initrd_start);
err = fdt_setprop(fdt, nodeoffset,
"linux,initrd-start", &tmp, sizeof(tmp));
if (err < 0)
printf("WARNING: "
"could not set linux,initrd-start %s.\n",
fdt_strerror(err));
tmp = __cpu_to_be32(initrd_end);
err = fdt_setprop(fdt, nodeoffset,
"linux,initrd-end", &tmp, sizeof(tmp));
if (err < 0)
printf("WARNING: could not set linux,initrd-end %s.\n",
fdt_strerror(err));
}
#ifdef OF_STDOUT_PATH
err = fdt_setprop(fdt, nodeoffset,
"linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1);
if (err < 0)
printf("WARNING: could not set linux,stdout-path %s.\n",
fdt_strerror(err));
#endif
return err;
}
