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env: Allow to set default_environment[] from board code via compile option DEFAULT_ENV_IS_RW

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This change allows board code to modify default_environment[] array when
compile option DEFAULT_ENV_IS_RW is specified in board config file.

Some board default variables depend on runtime configuration which is not
known at compile time. Therefore allow to set default_environment[] array
as non-const and allow board code to modify it when it is needed.

Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Andre Heider <a.heider@gmail.com>
This commit is contained in:
Pali Rohár 2020-12-23 12:21:28 +01:00 committed by Stefan Roese
parent 3936fd9986
commit 93f4048bc2
2 changed files with 6 additions and 0 deletions
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2
include/env_default.h
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@ -19,6 +19,8 @@ env_t embedded_environment __UBOOT_ENV_SECTION__(environment) = {
{
#elif defined(DEFAULT_ENV_INSTANCE_STATIC)
static char default_environment[] = {
#elif defined(DEFAULT_ENV_IS_RW)
uchar default_environment[] = {
#else
const uchar default_environment[] = {
#endif

4
include/env_internal.h
View file

@ -111,7 +111,11 @@ typedef struct environment_s {
extern env_t embedded_environment;
#endif /* ENV_IS_EMBEDDED */
#ifdef DEFAULT_ENV_IS_RW
extern unsigned char default_environment[];
#else
extern const unsigned char default_environment[];
#endif
#ifndef DO_DEPS_ONLY