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/* SPDX-License-Identifier: GPL-2.0-only */
#include <cbfs.h>
#include <cbmem.h>
#include <rmodule.h>
#include <stage_cache.h>
#include <amdblocks/agesawrapper.h>
#include <amdblocks/image.h>
static void *agesa_map_raw_file(const char *name, size_t *size)
{
enum cbfs_type type = CBFS_TYPE_RAW;
return cbfs_type_map(name, size, &type);
}
static void *agesa_map_stage_file_early(const char *name, size_t *size)
{
enum cbfs_type type = CBFS_TYPE_STAGE;
return cbfs_type_map(name, size, &type);
}
static void *agesa_map_stage_file_ramstage(const char *name, size_t *size)
{
struct prog prog = PROG_INIT(PROG_REFCODE, name);
struct rmod_stage_load rmod_agesa = {
.cbmem_id = CBMEM_ID_REFCODE,
.prog = &prog,
};
if (resume_from_stage_cache()) {
stage_cache_load_stage(STAGE_REFCODE, &prog);
} else {
if (rmodule_stage_load(&rmod_agesa) < 0)
return NULL;
stage_cache_add(STAGE_REFCODE, &prog);
}
*size = prog_size(&prog);
return prog_start(&prog);
}
static void *agesa_map_stage_file(const char *name, size_t *size)
{
if (!ENV_RAMSTAGE || !CONFIG(AGESA_SPLIT_MEMORY_FILES))
return agesa_map_stage_file_early(name, size);
return agesa_map_stage_file_ramstage(name, size);
}
static const char *get_agesa_cbfs_name(void)
{
if (!CONFIG(AGESA_SPLIT_MEMORY_FILES))
return CONFIG_AGESA_CBFS_NAME;
if (!ENV_RAMSTAGE)
return CONFIG_AGESA_PRE_MEMORY_CBFS_NAME;
return CONFIG_AGESA_POST_MEMORY_CBFS_NAME;
}
const void *agesawrapper_locate_module(const char name[8])
{
const void *agesa;
const AMD_IMAGE_HEADER *image;
size_t file_size;
const char *fname;
/* Assume boot device is memory mapped so the mapping can leak. */
assert(CONFIG(BOOT_DEVICE_MEMORY_MAPPED));
fname = get_agesa_cbfs_name();
if (CONFIG(AGESA_BINARY_PI_AS_STAGE))
agesa = agesa_map_stage_file(fname, &file_size);
else
agesa = agesa_map_raw_file(fname, &file_size);
if (!agesa)
return NULL;
image = amd_find_image(agesa, agesa + file_size, 4096, name);
if (!image)
return NULL;
return (AMD_MODULE_HEADER *)image->ModuleInfoOffset;
}
static MODULE_ENTRY agesa_dispatcher;
MODULE_ENTRY agesa_get_dispatcher(void)
{
const AMD_MODULE_HEADER *module;
static const char id[8] = AGESA_ID;
if (agesa_dispatcher != NULL)
return agesa_dispatcher;
module = agesawrapper_locate_module(id);
if (!module)
return NULL;
agesa_dispatcher = module->ModuleDispatcher;
return agesa_dispatcher;
}
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