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board: Add a gd flag for chain loading

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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>
This commit is contained in:
Simon Glass
2020-04-26 09:12:57 -06:00
committed by Bin Meng
parent f1f4438218
commit ba974a0137
2 changed files with 2 additions and 1 deletions
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1
include/asm-generic/global_data.h
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@@ -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 */

2
include/init.h
View File

@@ -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
/*