coreboot-kgpe-d16/src/include/program_loading.h

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/*
* This file is part of the coreboot project.
*
* Copyright 2015 Google Inc.
* Copyright (C) 2014 Imagination Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
Remove address from GPLv2 headers As per discussion with lawyers[tm], it's not a good idea to shorten the license header too much - not for legal reasons but because there are tools that look for them, and giving them a standard pattern simplifies things. However, we got confirmation that we don't have to update every file ever added to coreboot whenever the FSF gets a new lease, but can drop the address instead. util/kconfig is excluded because that's imported code that we may want to synchronize every now and then. $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *MA[, ]*02110-1301[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 59 Temple Place[-, ]*Suite 330, Boston, MA *02111-1307[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.:Foundation, Inc.:" {} + $ find * -type f -a \! -name \*.patch \ -a \! -name \*_shipped \ -a \! -name LICENSE_GPL \ -a \! -name LGPL.txt \ -a \! -name COPYING \ -a \! -name DISCLAIMER \ -exec sed -i "/Foundation, Inc./ N;s:Foundation, Inc.* USA\.* *:Foundation, Inc. :;s:Foundation, Inc. $:Foundation, Inc.:" {} + Change-Id: Icc968a5a5f3a5df8d32b940f9cdb35350654bef9 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/9233 Tested-by: build bot (Jenkins) Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
2015-03-26 15:17:45 +01:00
* Foundation, Inc.
*/
#ifndef PROGRAM_LOADING_H
#define PROGRAM_LOADING_H
#include <stdint.h>
#include <stddef.h>
#include <assets.h>
enum {
/* Last segment of program. Can be used to take different actions for
* cache maintenance of a program load. */
SEG_FINAL = 1 << 0,
};
/* Called for each segment of a program loaded. The SEG_FINAL flag will be
* set on the last segment loaded. */
void arch_segment_loaded(uintptr_t start, size_t size, int flags);
/* Representation of a program. */
struct prog {
/* 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 asset_size(&prog->asset);
}
/* Only valid for loaded programs. */
static inline void *prog_start(const struct prog *prog)
{
return asset_mmap(&prog->asset);
}
static inline void *prog_entry(const struct prog *prog)
{
return prog->entry;
}
static inline void *prog_entry_arg(const struct prog *prog)
{
return prog->arg;
}
/* region_device representing the 32-bit flat address space. */
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->asset.rdev, &addrspace_32bit.rdev, ptr, size);
}
static inline void prog_set_area(struct prog *prog, void *start, size_t size)
{
prog_memory_init(prog, (uintptr_t)start, size);
}
static inline void prog_set_entry(struct prog *prog, void *e, void *arg)
{
prog->entry = e;
prog->arg = arg;
}
/* Locate the identified program to run. Return 0 on success. < 0 on error. */
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. */
void arch_prog_run(struct prog *prog);
/* Platform (SoC/chipset) specific overrides for running a program. This is
* called prior to calling the arch_prog_run. Thus, if there is anything
* special that needs to be done by the platform similar to the architecture
* code it needs to that as well. */
void platform_prog_run(struct prog *prog);
struct prog_loader_ops {
const char *name;
/* Determine if the loader is the active one. If so returns 1 else 0
* or < 0 on error. */
int (*is_loader_active)(struct prog *prog);
/* Returns < 0 on error or 0 on success. This function locates
* the rdev representing the file data associated with the passed in
* prog. */
int (*locate)(struct prog *prog);
};
/************************
* ROMSTAGE LOADING *
************************/
/* Run romstage from bootblock. */
void run_romstage(void);
/************************
* RAMSTAGE LOADING *
************************/
/* Run ramstage from romstage. */
void run_ramstage(void);
/* Called when the stage cache couldn't load ramstage on resume. */
void ramstage_cache_invalid(void);
/***********************
* PAYLOAD LOADING *
***********************/
/* Load payload into memory in preparation to run. */
void payload_load(void);
/* Run the loaded payload. */
void payload_run(void);
/* Mirror the payload to be loaded. */
void mirror_payload(struct prog *payload);
/* Defined in src/lib/selfboot.c */
void *selfload(struct prog *payload);
#endif /* PROGRAM_LOADING_H */