x86: Allow installing an e820 when booting from coreboot
Move this code into a generic location so that it can be used by other x86
boards which want to boot from coreboot. Also ensure that this is called
if booting from coreboot.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h
index a66c0d2..850a0a7 100644
--- a/arch/x86/include/asm/e820.h
+++ b/arch/x86/include/asm/e820.h
@@ -22,9 +22,23 @@
#define ISA_START_ADDRESS 0xa0000
#define ISA_END_ADDRESS 0x100000
-/* Implementation defined function to install an e820 map */
+/* Implementation-defined function to install an e820 map */
unsigned int install_e820_map(unsigned int max_entries,
struct e820_entry *);
+
+/**
+ * cb_install_e820_map() - Install e820 map provided by coreboot sysinfo
+ *
+ * This should be used when booting from coreboot, since in that case the
+ * memory areas are provided by coreboot in its sysinfo.
+ *
+ * @max_entries: Maximum number of entries to write
+ * @entries: Place to put entires
+ * @return number of entries written
+ */
+unsigned int cb_install_e820_map(unsigned int max_entries,
+ struct e820_entry *entries);
+
#endif /* __ASSEMBLY__ */
#endif /* _ASM_X86_E820_H */