From ba974a0137edc86cff9727a83cf6be154ab18ef0 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Sun, 26 Apr 2020 09:12:57 -0600
Subject: [PATCH] board: Add a gd flag for chain loading
When U-Boot is run from another boot loader, much of the low-level init
needs to be skipped.
Add a flag for this and adjust ll_boot_init() to use it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---
include/asm-generic/global_data.h | 1 +
include/init.h | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h
index d9e220cfe3..8c78792cc9 100644
--- a/include/asm-generic/global_data.h
+++ b/include/asm-generic/global_data.h
@@ -166,5 +166,6 @@ typedef struct global_data {
#define GD_FLG_SPL_EARLY_INIT 0x04000 /* Early SPL init is done */
#define GD_FLG_LOG_READY 0x08000 /* Log system is ready for use */
#define GD_FLG_WDT_READY 0x10000 /* Watchdog is ready for use */
+#define GD_FLG_SKIP_LL_INIT 0x20000 /* Don't perform low-level init */
#endif /* __ASM_GENERIC_GBL_DATA_H */
diff --git a/include/init.h b/include/init.h
index 9ef88c966b..b5a167b6ed 100644
--- a/include/init.h
+++ b/include/init.h
@@ -20,7 +20,7 @@ struct global_data;
#ifdef CONFIG_EFI_STUB
#define ll_boot_init() false
#else
-#define ll_boot_init() true
+#define ll_boot_init() (!(gd->flags & GD_FLG_SKIP_LL_INIT))
#endif
/*
--
2.39.5