+unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
+{
+ int i;
+
+ unsigned num_entries = min((unsigned)lib_sysinfo.n_memranges, max_entries);
+ if (num_entries < lib_sysinfo.n_memranges) {
+ printf("Warning: Limiting e820 map to %d entries.\n",
+ num_entries);
+ }
+ for (i = 0; i < num_entries; i++) {
+ struct memrange *memrange = &lib_sysinfo.memrange[i];
+
+ entries[i].addr = memrange->base;
+ entries[i].size = memrange->size;
+ entries[i].type = memrange->type;
+ }
+ return num_entries;
+}
+
+/*
+ * This function looks for the highest region of memory lower than 4GB which
+ * has enough space for U-Boot where U-Boot is aligned on a page boundary. It
+ * overrides the default implementation found elsewhere which simply picks the
+ * end of ram, wherever that may be. The location of the stack, the relocation
+ * address, and how far U-Boot is moved by relocation are set in the global
+ * data structure.
+ */
+ulong board_get_usable_ram_top(ulong total_size)