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4415f1d1f1
Set up a location driver for each supported environment location. At present this just points to the global functions and is not used. A later patch will switch this over to use private functions in each driver. There are several special cases here in various drivers to handle peculiarities of certain boards: 1. Some boards define CONFIG_ENV_IS_IN_FAT and CONFIG_SPL_ENV_SUPPORT but do not actually load the environment in SPL. The env load code was optimised out before but with the driver, it is not. Therefore a special case is added to env/fat.c. The correct fix (depending on board testing might be to disable CONFIG_SPL_ENV_SUPPORT. 2. A similar situations happens with CONFIG_ENV_IS_IN_FLASH. Some boards do not actually load the environment in SPL, so to reduce code size we need to drop that code. A similar fix may be possible with these boards, or it may be possible to adjust the environment CONFIG settings. Added to the above is that the CONFIG_SPL_ENV_SUPPORT option does not apply when the environment is in flash. Obviously the above has been discovered through painful and time-consuming trial and error. Hopefully board maintainers can take a look and figure out what is actually needed. Signed-off-by: Simon Glass <sjg@chromium.org>
42 lines
724 B
C
42 lines
724 B
C
/*
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* (C) Copyright 2000-2010
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Andreas Heppel <aheppel@sysgo.de>
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <command.h>
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#include <environment.h>
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#include <linux/stddef.h>
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DECLARE_GLOBAL_DATA_PTR;
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env_t *env_ptr;
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void env_relocate_spec(void)
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{
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}
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/*
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* Initialize Environment use
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*
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* We are still running from ROM, so data use is limited
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*/
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int env_init(void)
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{
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gd->env_addr = (ulong)&default_environment[0];
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gd->env_valid = 0;
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return 0;
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}
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U_BOOT_ENV_LOCATION(nowhere) = {
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.location = ENVL_NOWHERE,
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.load = env_relocate_spec,
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.init = env_init,
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};
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