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binman: Add binman symbol support to SPL

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Allow SPL to access binman symbols and use this to get the address of
U-Boot. This falls back to CONFIG_SYS_TEXT_BASE if the binman symbol
is not available.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2017-11-13 18:55:03 -07:00
parent cf2a8fd66d
commit 8bee2d251a
3 changed files with 38 additions and 2 deletions
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13
include/binman_sym.h
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@@ -37,6 +37,17 @@
_type binman_symname(_entry_name, _prop_name) \
__attribute__((aligned(4), unused, section(".binman_sym")))
/**
* binman_sym_extern() - Declare a extern symbol that will be used at run-time
*
* @_type: Type f the symbol (e.g. unsigned long)
* @entry_name: Name of the entry to look for (e.g. 'u_boot_spl')
* @_prop_name: Property value to get from that entry (e.g. 'pos')
*/
#define binman_sym_extern(_type, _entry_name, _prop_name) \
extern _type binman_symname(_entry_name, _prop_name) \
__attribute__((aligned(4), unused, section(".binman_sym")))
/**
* binman_sym_declare_optional() - Declare an optional symbol
*
@@ -73,6 +84,8 @@
#define binman_sym_declare_optional(_type, _entry_name, _prop_name)
#define binman_sym_extern(_type, _entry_name, _prop_name)
#define binman_sym(_type, _entry_name, _prop_name) BINMAN_SYM_MISSING
#endif /* BINMAN */