support smbios

alloc buffer in fseg memory and fill it with smbios anchor and
tables which read from the fw_cfg, then check type0 table and
rebuild it if it's not exist.

mainly inspired by the seabios, and borrowed some code from it.

Reviewed-by: Ben Luo <luoben@linux.alibaba.com>
Signed-off-by: kaihuan.pkh <kaihuan.pkh@alibaba-inc.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/string.c b/string.c
index 8d1cb7a..e3ebfa7 100644
--- a/string.c
+++ b/string.c
@@ -132,3 +132,11 @@ long atol(const char *ptr)
 
     return acc;
 }
+
+uint8_t csum8(uint8_t *buf, uint32_t len)
+{
+	uint32_t s = 0;
+	while (len-- > 0)
+		s += *buf++;
+	return s;
+}