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Diffstat (limited to 'lib/fdtdec.c')
-rw-r--r--lib/fdtdec.c88
1 files changed, 81 insertions, 7 deletions
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index e8775df..7c7e673 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -691,20 +691,25 @@ char *fdtdec_get_config_string(const void *blob, const char *prop_name)
return (char *)nodep;
}
-int fdtdec_decode_region(const void *blob, int node,
- const char *prop_name, void **ptrp, size_t *size)
+int fdtdec_decode_region(const void *blob, int node, const char *prop_name,
+ fdt_addr_t *basep, fdt_size_t *sizep)
{
const fdt_addr_t *cell;
int len;
- debug("%s: %s\n", __func__, prop_name);
+ debug("%s: %s: %s\n", __func__, fdt_get_name(blob, node, NULL),
+ prop_name);
cell = fdt_getprop(blob, node, prop_name, &len);
- if (!cell || (len != sizeof(fdt_addr_t) * 2))
+ if (!cell || (len < sizeof(fdt_addr_t) * 2)) {
+ debug("cell=%p, len=%d\n", cell, len);
return -1;
+ }
+
+ *basep = fdt_addr_to_cpu(*cell);
+ *sizep = fdt_size_to_cpu(cell[1]);
+ debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep,
+ (ulong)*sizep);
- *ptrp = map_sysmem(fdt_addr_to_cpu(*cell), *size);
- *size = fdt_size_to_cpu(cell[1]);
- debug("%s: size=%zx\n", __func__, *size);
return 0;
}
@@ -720,6 +725,7 @@ int fdtdec_decode_region(const void *blob, int node,
int fdtdec_read_fmap_entry(const void *blob, int node, const char *name,
struct fmap_entry *entry)
{
+ const char *prop;
u32 reg[2];
if (fdtdec_get_int_array(blob, node, "reg", reg, 2)) {
@@ -728,6 +734,13 @@ int fdtdec_read_fmap_entry(const void *blob, int node, const char *name,
}
entry->offset = reg[0];
entry->length = reg[1];
+ entry->used = fdtdec_get_int(blob, node, "used", entry->length);
+ prop = fdt_getprop(blob, node, "compress", NULL);
+ entry->compress_algo = prop && !strcmp(prop, "lzo") ?
+ FMAP_COMPRESS_LZO : FMAP_COMPRESS_NONE;
+ prop = fdt_getprop(blob, node, "hash", &entry->hash_size);
+ entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE;
+ entry->hash = (uint8_t *)prop;
return 0;
}
@@ -802,4 +815,65 @@ int fdtdec_pci_get_bdf(const void *fdt, int node, int *bdf)
return 0;
}
+
+int fdtdec_decode_memory_region(const void *blob, int config_node,
+ const char *mem_type, const char *suffix,
+ fdt_addr_t *basep, fdt_size_t *sizep)
+{
+ char prop_name[50];
+ const char *mem;
+ fdt_size_t size, offset_size;
+ fdt_addr_t base, offset;
+ int node;
+
+ if (config_node == -1) {
+ config_node = fdt_path_offset(blob, "/config");
+ if (config_node < 0) {
+ debug("%s: Cannot find /config node\n", __func__);
+ return -ENOENT;
+ }
+ }
+ if (!suffix)
+ suffix = "";
+
+ snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type,
+ suffix);
+ mem = fdt_getprop(blob, config_node, prop_name, NULL);
+ if (!mem) {
+ debug("%s: No memory type for '%s', using /memory\n", __func__,
+ prop_name);
+ mem = "/memory";
+ }
+
+ node = fdt_path_offset(blob, mem);
+ if (node < 0) {
+ debug("%s: Failed to find node '%s': %s\n", __func__, mem,
+ fdt_strerror(node));
+ return -ENOENT;
+ }
+
+ /*
+ * Not strictly correct - the memory may have multiple banks. We just
+ * use the first
+ */
+ if (fdtdec_decode_region(blob, node, "reg", &base, &size)) {
+ debug("%s: Failed to decode memory region %s\n", __func__,
+ mem);
+ return -EINVAL;
+ }
+
+ snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type,
+ suffix);
+ if (fdtdec_decode_region(blob, config_node, prop_name, &offset,
+ &offset_size)) {
+ debug("%s: Failed to decode memory region '%s'\n", __func__,
+ prop_name);
+ return -EINVAL;
+ }
+
+ *basep = base + offset;
+ *sizep = offset_size;
+
+ return 0;
+}
#endif