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lib: Add FIT payload support

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* Add support for parsing and booting FIT payloads.
* Build fit loader code from depthcharge.
* Fix coding style.
* Add Kconfig option to add compiletime support for FIT.
* Add support for initrd.
* Add default compat strings
* Apply optional devicetree fixups using dt_apply_fixups

Starting at this point the CBFS payload/ can be either SELF or FIT.

Tested on Cavium SoC: Parses and loads a Linux kernel 4.16.3.
Tested on Cavium SoC: Parses and loads a Linux kernel 4.15.0.
Tested on Cavium SoC: Parses and loads a Linux kernel 4.1.52.

Change-Id: I0f27b92a5e074966f893399eb401eb97d784850d
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/25019
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
This commit is contained in:
Patrick Rudolph
2018-04-19 14:39:07 +02:00
committed by Philipp Deppenwiese
parent 8c986ab263
commit a892cde653
9 changed files with 840 additions and 261 deletions
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99
src/include/fit.h
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@ -1,8 +1,8 @@
/*
* Copyright 2013 Google Inc.
* Copyright 2018-present Facebook, Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
* Taken from depthcharge: src/boot/fit.h
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
@ -15,64 +15,85 @@
* GNU General Public License for more details.
*/
#ifndef __BOOT_FIT_H__
#define __BOOT_FIT_H__
#ifndef __LIB_FIT_H__
#define __LIB_FIT_H__
#include <stddef.h>
#include <stdint.h>
#include <device_tree.h>
#include <list.h>
#include <program_loading.h>
#include "base/device_tree.h"
#include "base/list.h"
typedef enum CompressionType
{
CompressionInvalid,
CompressionNone,
CompressionLzma,
CompressionLz4,
} CompressionType;
typedef struct FitImageNode
struct fit_image_node
{
const char *name;
void *data;
uint32_t size;
CompressionType compression;
int compression;
ListNode list_node;
} FitImageNode;
struct list_node list_node;
};
typedef struct FitConfigNode
struct fit_config_node
{
const char *name;
const char *kernel;
FitImageNode *kernel_node;
struct fit_image_node *kernel_node;
const char *fdt;
FitImageNode *fdt_node;
struct fit_image_node *fdt_node;
const char *ramdisk;
FitImageNode *ramdisk_node;
FdtProperty compat;
struct fit_image_node *ramdisk_node;
struct fdt_property compat;
int compat_rank;
int compat_pos;
const char *compat_string;
ListNode list_node;
} FitConfigNode;
struct list_node list_node;
};
/*
* Updates the cmdline in the devicetree.
*/
void fit_update_chosen(struct device_tree *tree, char *cmd_line);
/*
* Add a compat string to the list of supported board ids.
* Has to be called before fit_load().
* The most common use-case would be to implement it on board level.
* Strings that were added first have a higher priority on finding a match.
*/
void fit_add_compat_string(const char *str);
/*
* Updates the memory section in the devicetree.
*/
void fit_update_memory(struct device_tree *tree);
/*
* Do architecture specific payload placements and fixups.
* Set entrypoint and first argument (if any).
* @param payload The payload, to set the entry point
* @param config The extracted FIT config
* @param kernel out-argument where to place the kernel
* @param fdt out-argument where to place the devicetree
* @param initrd out-argument where to place the initrd (optional)
* @return True if all config nodes could be placed, the corresponding
* regions have been updated and the entry point has been set.
* False on error.
*/
bool fit_payload_arch(struct prog *payload, struct fit_config_node *config,
struct region *kernel,
struct region *fdt,
struct region *initrd);
/*
* Unpack a FIT image into memory, choosing the right configuration through the
* compatible string set by fit_add_compat() and unflattening the corresponding
* kernel device tree.
* compatible string set by fit_add_compat() and return the selected config
* node.
*/
FitImageNode *fit_load(void *fit, char *cmd_line, DeviceTree **dt);
struct fit_config_node *fit_load(void *fit);
/*
* Add a compatible string for the preferred kernel DT to the list for this
* platform. This should be called before the first fit_load() so it will be
* ranked as a better match than the default compatible strings. |compat| must
* stay accessible throughout depthcharge's runtime (i.e. not stack-allocated)!
*/
void fit_add_compat(const char *compat);
void fit_add_ramdisk(struct device_tree *tree, void *ramdisk_addr,
size_t ramdisk_size);
void fit_add_ramdisk(DeviceTree *tree, void *ramdisk_addr, size_t ramdisk_size);
#endif /* __BOOT_FIT_H__ */
#endif /* __LIB_FIT_H__ */