From 365af27f0dec5013c9749ee397e9274ff32e06c4 Mon Sep 17 00:00:00 2001
From: Ovidiu Panait <ovidiu.panait@windriver.com>
Date: Fri, 24 Jul 2020 14:12:24 +0300
Subject: [PATCH] blkcache: Extend blkcache_init to cover
 CONFIG_NEEDS_MANUAL_RELOC

Extend manual relocation of block_cache list pointers to all platforms that
enable CONFIG_NEEDS_MANUAL_RELOC. Remove m68k-specific checks and provide a
single implementation that adds gd->reloc_off to the pre-relocation
pointers.

Acked-by: Angelo Dureghello <angelo.dureghello@timesys.com>
Tested-by: Angelo Dureghello <angelo.dureghello@timesys.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Eric Nelson <eric@nelint.com>
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
[trini: Add guard around DECLARE_GLOBAL_DATA_PTR to avoid size growth]
Signed-off-by: Tom Rini <trini@konsulko.com>
---
 common/board_r.c         |  2 +-
 drivers/block/blkcache.c | 15 +++++++++------
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/common/board_r.c b/common/board_r.c
index 3b2c6e0..53792e9 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -848,7 +848,7 @@ static init_fnc_t init_sequence_r[] = {
 #if defined(CONFIG_PRAM)
 	initr_mem,
 #endif
-#if defined(CONFIG_M68K) && defined(CONFIG_BLOCK_CACHE)
+#if defined(CONFIG_NEEDS_MANUAL_RELOC) && defined(CONFIG_BLOCK_CACHE)
 	blkcache_init,
 #endif
 	run_main_loop,
diff --git a/drivers/block/blkcache.c b/drivers/block/blkcache.c
index b6fc72f..eca6619 100644
--- a/drivers/block/blkcache.c
+++ b/drivers/block/blkcache.c
@@ -12,6 +12,10 @@
 #include <linux/ctype.h>
 #include <linux/list.h>
 
+#ifdef CONFIG_NEEDS_MANUAL_RELOC
+DECLARE_GLOBAL_DATA_PTR;
+#endif
+
 struct block_cache_node {
 	struct list_head lh;
 	int iftype;
@@ -22,21 +26,20 @@ struct block_cache_node {
 	char *cache;
 };
 
-#ifndef CONFIG_M68K
 static LIST_HEAD(block_cache);
-#else
-static struct list_head block_cache;
-#endif
 
 static struct block_cache_stats _stats = {
 	.max_blocks_per_entry = 8,
 	.max_entries = 32
 };
 
-#ifdef CONFIG_M68K
+#ifdef CONFIG_NEEDS_MANUAL_RELOC
 int blkcache_init(void)
 {
-	INIT_LIST_HEAD(&block_cache);
+	struct list_head *head = &block_cache;
+
+	head->next = (uintptr_t)head->next + gd->reloc_off;
+	head->prev = (uintptr_t)head->prev + gd->reloc_off;
 
 	return 0;
 }
-- 
2.7.4