libpayload: multiboot - support meminfo flag
Some simple implementation of the MultiBoot protocol may not pass a
memory map (MULTIBOOT_FLAGS_MMAP missing in the flags) but just the two
values for low and high memory, indicated by the MULTIBOOT_FLAGS_MEMINFO
flag.
Support those kind of boot loaders too, instead of falling back to the
hard-coded values in lib_get_sysinfo().
Tested with a multiboot enhanced version of FILO.
Change-Id: I22cf9e3ec0075aff040390bd177c5cd22d439b81
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Reviewed-on: https://review.coreboot.org/18350
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/payloads/libpayload/include/multiboot_tables.h b/payloads/libpayload/include/multiboot_tables.h
index ac27f8a..3b42675 100644
--- a/payloads/libpayload/include/multiboot_tables.h
+++ b/payloads/libpayload/include/multiboot_tables.h
@@ -35,6 +35,7 @@
#define MULTIBOOT_MAGIC 0x2BADB002UL
#define MULTIBOOT_FLAGS_MMAP (1 << 6)
#define MULTIBOOT_FLAGS_CMDLINE (1 << 2)
+#define MULTIBOOT_FLAGS_MEMINFO (1 << 0)
struct multiboot_header {
u32 flags;
u32 mem_lower;