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rmodules: use rmodtool to create rmodules

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Start using the rmodtool for generating rmodules.
rmodule_link() has been changed to create 2 rules:
one for the passed in <name>, the other for creating
<name>.rmod which is an ELF file in the format of
an rmodule.

Since the header is not compiled and linked together
with an rmodule there needs to be a way of marking
which symbol is the entry point. __rmodule_entry is
the symbol used for knowing the entry point. There
was a little churn in SMM modules to ensure an
rmodule entry point symbol takes a single argument.

Change-Id: Ie452ed866f6596bf13f137f5b832faa39f48d26e
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/5379
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
This commit is contained in:
Aaron Durbin
2014-03-10 16:13:58 -05:00
committed by Stefan Reinauer
parent 4fde5a66b4
commit 3eb8eb7eba
25 changed files with 121 additions and 261 deletions
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25
src/include/rmodule.h
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@@ -21,6 +21,7 @@
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include <rmodule-defs.h>
enum {
@@ -50,11 +51,6 @@ int rmodule_load_alignment(const struct rmodule *m);
int rmodule_calc_region(unsigned int region_alignment, size_t rmodule_size,
size_t *region_size, int *load_offset);
#define DEFINE_RMODULE_HEADER(name_, entry_, type_) \
struct rmodule_header name_ \
__attribute__ ((section (".module_header"))) = \
RMODULE_HEADER(entry_, type_)
/* Support for loading rmodule stages. This API is only available when
* using dynamic cbmem because it uses the dynamic cbmem API to obtain
* the backing store region for the stage. */
@@ -84,17 +80,12 @@ struct rmodule {
void *relocations;
};
/* These are the symbols assumed that every module contains. The linker script
* provides these symbols. */
extern char _relocations_begin_offset[];
extern char _relocations_end_offset[];
extern char _payload_end_offset[];
extern char _payload_begin_offset[];
extern char _bss[];
extern char _ebss[];
extern char _module_program_size[];
extern char _module_link_start_addr[];
extern char _module_params_begin[];
extern char _module_params_end[];
#if IS_ENABLED(CONFIG_RELOCATABLE_MODULES)
/* Rmodules have an entry point of named __rmodule_entry. */
#define RMODULE_ENTRY(entry_) \
void __rmodule_entry(void *) __attribute__((alias (STRINGIFY(entry_))))
#else
#define RMODULE_ENTRY(entry_)
#endif
#endif /* RMODULE_H */