[U-Boot] [PATCH 1/3] common: hash: Manually relocate struct hash_algo

[Michal Simek]

From: T Karthik Reddy <t.karthik.reddy at xilinx.com>

This patch adds manual relocation for struct hash_algo if
CONFIG_NEEDS_MANUAL_RELOC is enabled.

Signed-off-by: T Karthik Reddy <t.karthik.reddy at xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu at xilinx.com>
Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---

 common/hash.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/common/hash.c b/common/hash.c
index d33e329897e1..d0d825e38986 100644
--- a/common/hash.c
+++ b/common/hash.c
@@ -30,6 +30,12 @@
 #include <u-boot/sha256.h>
 #include <u-boot/md5.h>
 
+#if !defined(USE_HOSTCC) && defined(CONFIG_NEEDS_MANUAL_RELOC)
+DECLARE_GLOBAL_DATA_PTR;
+#endif
+
+static void reloc_update(void);
+
 #if defined(CONFIG_SHA1) && !defined(CONFIG_SHA_PROG_HW_ACCEL)
 static int hash_init_sha1(struct hash_algo *algo, void **ctxp)
 {
@@ -215,10 +221,31 @@ static struct hash_algo hash_algo[] = {
 #define multi_hash()	0
 #endif
 
+static void reloc_update(void)
+{
+#if !defined(USE_HOSTCC) && defined(CONFIG_NEEDS_MANUAL_RELOC)
+	int i;
+	static bool done;
+
+	if (!done) {
+		done = true;
+		for (i = 0; i < ARRAY_SIZE(hash_algo); i++) {
+			hash_algo[i].name += gd->reloc_off;
+			hash_algo[i].hash_func_ws += gd->reloc_off;
+			hash_algo[i].hash_init += gd->reloc_off;
+			hash_algo[i].hash_update += gd->reloc_off;
+			hash_algo[i].hash_finish += gd->reloc_off;
+		}
+	}
+#endif
+}
+
 int hash_lookup_algo(const char *algo_name, struct hash_algo **algop)
 {
 	int i;
 
+	reloc_update();
+
 	for (i = 0; i < ARRAY_SIZE(hash_algo); i++) {
 		if (!strcmp(algo_name, hash_algo[i].name)) {
 			*algop = &hash_algo[i];
@@ -235,6 +262,8 @@ int hash_progressive_lookup_algo(const char *algo_name,
 {
 	int i;
 
+	reloc_update();
+
 	for (i = 0; i < ARRAY_SIZE(hash_algo); i++) {
 		if (!strcmp(algo_name, hash_algo[i].name)) {
 			if (hash_algo[i].hash_init) {
-- 
2.17.1