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/* Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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.
*/
#ifndef __MSM_PERIPHERAL_LOADER_H
#define __MSM_PERIPHERAL_LOADER_H
#include <linux/dma-attrs.h>
struct device;
struct module;
struct pil_priv;
/**
* struct pil_desc - PIL descriptor
* @name: string used for pil_get()
* @dev: parent device
* @ops: callback functions
* @owner: module the descriptor belongs to
* @proxy_timeout: delay in ms until proxy vote is removed
* @flags: bitfield for image flags
* @priv: DON'T USE - internal only
* @attrs: DMA attributes to be used during dma allocation.
* @proxy_unvote_irq: IRQ to trigger a proxy unvote. proxy_timeout
* is ignored if this is set.
* @map_fw_mem: Custom function used to map physical address space to virtual.
* This defaults to ioremap if not specified.
* @unmap_fw_mem: Custom function used to undo mapping by map_fw_mem.
* This defaults to iounmap if not specified.
*/
struct pil_desc {
const char *name;
struct device *dev;
const struct pil_reset_ops *ops;
struct module *owner;
unsigned long proxy_timeout;
unsigned long flags;
#define PIL_SKIP_ENTRY_CHECK BIT(0)
struct pil_priv *priv;
struct dma_attrs attrs;
unsigned int proxy_unvote_irq;
void * (*map_fw_mem)(phys_addr_t phys, size_t size, void *data);
void (*unmap_fw_mem)(void *virt, size_t size, void *data);
void *map_data;
};
/**
* struct pil_image_info - info in IMEM about image and where it is loaded
* @name: name of image (may or may not be NULL terminated)
* @start: indicates physical address where image starts (little endian)
* @size: size of image (little endian)
*/
struct pil_image_info {
char name[8];
__le64 start;
__le32 size;
} __attribute__((__packed__));
/**
* struct pil_reset_ops - PIL operations
* @init_image: prepare an image for authentication
* @mem_setup: prepare the image memory region
* @verify_blob: authenticate a program segment, called once for each loadable
* program segment (optional)
* @proxy_vote: make proxy votes before auth_and_reset (optional)
* @auth_and_reset: boot the processor
* @proxy_unvote: remove any proxy votes (optional)
* @deinit_image: restore actions performed in init_image if necessary
* @shutdown: shutdown the processor
*/
struct pil_reset_ops {
int (*init_image)(struct pil_desc *pil, const u8 *metadata,
size_t size);
int (*mem_setup)(struct pil_desc *pil, phys_addr_t addr, size_t size);
int (*verify_blob)(struct pil_desc *pil, phys_addr_t phy_addr,
size_t size);
int (*proxy_vote)(struct pil_desc *pil);
int (*auth_and_reset)(struct pil_desc *pil);
void (*proxy_unvote)(struct pil_desc *pil);
int (*deinit_image)(struct pil_desc *pil);
int (*shutdown)(struct pil_desc *pil);
};
#ifdef CONFIG_MSM_PIL
extern int pil_desc_init(struct pil_desc *desc);
extern int pil_boot(struct pil_desc *desc);
extern void pil_shutdown(struct pil_desc *desc);
extern void pil_desc_release(struct pil_desc *desc);
extern phys_addr_t pil_get_entry_addr(struct pil_desc *desc);
extern int pil_do_ramdump(struct pil_desc *desc, void *ramdump_dev);
#else
static inline int pil_desc_init(struct pil_desc *desc) { return 0; }
static inline int pil_boot(struct pil_desc *desc) { return 0; }
static inline void pil_shutdown(struct pil_desc *desc) { }
static inline void pil_desc_release(struct pil_desc *desc) { }
static inline phys_addr_t pil_get_entry_addr(struct pil_desc *desc)
{
return 0;
}
static inline int pil_do_ramdump(struct pil_desc *desc, void *ramdump_dev)
{
return 0;
}
#endif
#endif
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