Lines Matching +full:device +full:- +full:sram

1 // SPDX-License-Identifier: GPL-2.0-only
3  * SRAM protect-exec region helper functions
5  * Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com/
9 #include <linux/device.h>
12 #include <linux/sram.h>
17 #include "sram.h"
22 int sram_check_protect_exec(struct sram_dev *sram, struct sram_reserve *block,  in sram_check_protect_exec()  argument
25 	unsigned long base = (unsigned long)part->base;  in sram_check_protect_exec()
26 	unsigned long end = base + block->size;  in sram_check_protect_exec()
29 		dev_err(sram->dev,  in sram_check_protect_exec()
30 			"SRAM pool marked with 'protect-exec' is not page aligned and will not be created.\n");  in sram_check_protect_exec()
31 		return -ENOMEM;  in sram_check_protect_exec()
40 	list_add_tail(&part->list, &exec_pool_list);  in sram_add_protect_exec()
47  * sram_exec_copy - copy data to a protected executable region of sram
49  * @pool: struct gen_pool retrieved that is part of this sram
57  * This helper function allows sram driver to act as central control location
58  * of 'protect-exec' pools which are normal sram pools but are always set
59  * read-only and executable except when copying data to them, at which point
60  * they are set to read-write non-executable, to make sure no memory is
61  * writeable and executable at the same time. This region must be page-aligned
84 		if (p->pool == pool)  in sram_exec_copy()
95 	base = (unsigned long)part->base;  in sram_exec_copy()
98 	mutex_lock(&part->lock);  in sram_exec_copy()
113 	mutex_unlock(&part->lock);  in sram_exec_copy()
118 	mutex_unlock(&part->lock);  in sram_exec_copy()