cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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main.c (1883B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * BCM47XX NAND flash driver
      4 *
      5 * Copyright (C) 2012 Rafał Miłecki <zajec5@gmail.com>
      6 */
      7
      8#include "bcm47xxnflash.h"
      9
     10#include <linux/module.h>
     11#include <linux/kernel.h>
     12#include <linux/slab.h>
     13#include <linux/platform_device.h>
     14#include <linux/bcma/bcma.h>
     15
     16MODULE_DESCRIPTION("NAND flash driver for BCMA bus");
     17MODULE_LICENSE("GPL");
     18MODULE_AUTHOR("Rafał Miłecki");
     19
     20static const char *probes[] = { "bcm47xxpart", NULL };
     21
     22static int bcm47xxnflash_probe(struct platform_device *pdev)
     23{
     24	struct bcma_nflash *nflash = dev_get_platdata(&pdev->dev);
     25	struct bcm47xxnflash *b47n;
     26	struct mtd_info *mtd;
     27	int err = 0;
     28
     29	b47n = devm_kzalloc(&pdev->dev, sizeof(*b47n), GFP_KERNEL);
     30	if (!b47n)
     31		return -ENOMEM;
     32
     33	nand_set_controller_data(&b47n->nand_chip, b47n);
     34	mtd = nand_to_mtd(&b47n->nand_chip);
     35	mtd->dev.parent = &pdev->dev;
     36	b47n->cc = container_of(nflash, struct bcma_drv_cc, nflash);
     37
     38	if (b47n->cc->core->bus->chipinfo.id == BCMA_CHIP_ID_BCM4706) {
     39		err = bcm47xxnflash_ops_bcm4706_init(b47n);
     40	} else {
     41		pr_err("Device not supported\n");
     42		err = -ENOTSUPP;
     43	}
     44	if (err) {
     45		pr_err("Initialization failed: %d\n", err);
     46		return err;
     47	}
     48
     49	platform_set_drvdata(pdev, b47n);
     50
     51	err = mtd_device_parse_register(mtd, probes, NULL, NULL, 0);
     52	if (err) {
     53		pr_err("Failed to register MTD device: %d\n", err);
     54		return err;
     55	}
     56
     57	return 0;
     58}
     59
     60static int bcm47xxnflash_remove(struct platform_device *pdev)
     61{
     62	struct bcm47xxnflash *nflash = platform_get_drvdata(pdev);
     63	struct nand_chip *chip = &nflash->nand_chip;
     64	int ret;
     65
     66	ret = mtd_device_unregister(nand_to_mtd(chip));
     67	WARN_ON(ret);
     68	nand_cleanup(chip);
     69
     70	return 0;
     71}
     72
     73static struct platform_driver bcm47xxnflash_driver = {
     74	.probe	= bcm47xxnflash_probe,
     75	.remove = bcm47xxnflash_remove,
     76	.driver = {
     77		.name = "bcma_nflash",
     78	},
     79};
     80
     81module_platform_driver(bcm47xxnflash_driver);