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assets: abstract away the firmware assets used for booting

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As there can be more than one source of firmware assets this
patch generalizes the notion of locating a particular asset.
struct asset is added along with some helper functions for
working on assets as a first class citizen.

Change-Id: I2ce575d1e5259aed4c34c3dcfd438abe9db1d7b9
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/10264
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
This commit is contained in:
Aaron Durbin
2015-05-20 12:08:55 -05:00
committed by Patrick Georgi
parent 6a452eff90
commit ac12c66cf9
14 changed files with 272 additions and 155 deletions
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55
src/include/program_loading.h
View File

@ -22,7 +22,7 @@
#include <stdint.h>
#include <stddef.h>
#include <region.h>
#include <assets.h>
enum {
/* Last segment of program. Can be used to take different actions for
@ -34,40 +34,49 @@ enum {
* set on the last segment loaded. */
void arch_segment_loaded(uintptr_t start, size_t size, int flags);
enum prog_type {
PROG_VERSTAGE,
PROG_ROMSTAGE,
PROG_RAMSTAGE,
PROG_REFCODE,
PROG_PAYLOAD,
PROG_BL31,
};
/* Representation of a program. */
struct prog {
enum prog_type type;
const char *name;
/* Source of program content to load. After loading program it
* represents the memory region of the stages and payload. For
* architectures that use a bounce buffer then it would represent
* the bounce buffer. */
struct region_device rdev;
/* The region_device within the asset is the source of program content
* to load. After loading program it represents the memory region of
* the stages and payload. For architectures that use a bounce buffer
* then it would represent the bounce buffer. */
struct asset asset;
/* Entry to program with optional argument. It's up to the architecture
* to decide if argument is passed. */
void (*entry)(void *);
void *arg;
};
#define PROG_INIT(type_, name_) \
{ \
.asset = ASSET_INIT(type_, name_), \
}
static inline const char *prog_name(const struct prog *prog)
{
return asset_name(&prog->asset);
}
static inline enum asset_type prog_type(const struct prog *prog)
{
return asset_type(&prog->asset);
}
static inline struct region_device *prog_rdev(struct prog *prog)
{
return asset_rdev(&prog->asset);
}
/* Only valid for loaded programs. */
static inline size_t prog_size(const struct prog *prog)
{
return region_device_sz(&prog->rdev);
return asset_size(&prog->asset);
}
/* Only valid for loaded programs. */
static inline void *prog_start(const struct prog *prog)
{
return rdev_mmap_full(&prog->rdev);
return asset_mmap(&prog->asset);
}
static inline void *prog_entry(const struct prog *prog)
@ -86,7 +95,7 @@ extern const struct mem_region_device addrspace_32bit;
static inline void prog_memory_init(struct prog *prog, uintptr_t ptr,
size_t size)
{
rdev_chain(&prog->rdev, &addrspace_32bit.rdev, ptr, size);
rdev_chain(&prog->asset.rdev, &addrspace_32bit.rdev, ptr, size);
}
static inline void prog_set_area(struct prog *prog, void *start, size_t size)
@ -101,7 +110,11 @@ static inline void prog_set_entry(struct prog *prog, void *e, void *arg)
}
/* Locate the identified program to run. Return 0 on success. < 0 on error. */
int prog_locate(struct prog *prog);
static inline int prog_locate(struct prog *prog)
{
return asset_locate(&prog->asset);
}
/* Run the program described by prog. */
void prog_run(struct prog *prog);
/* Per architecture implementation running a program. */