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e67af182c2
Add linux/sizes.h to prevent build failure on non ARM architectures as: CC [M] drivers/remoteproc/qcom_mdt_loader.o In file included from include/linux/cache.h:4:0, from include/linux/printk.h:8, from include/linux/kernel.h:13, from include/asm-generic/bug.h:13, from arch/x86/include/asm/bug.h:35, from include/linux/bug.h:4, from include/linux/thread_info.h:11, from arch/x86/include/asm/elf.h:7, from include/linux/elf.h:4, from drivers/remoteproc/qcom_mdt_loader.c:18: drivers/remoteproc/qcom_mdt_loader.c: In function ‘qcom_mdt_parse’: drivers/remoteproc/qcom_mdt_loader.c:90:52: error: ‘SZ_4K’ undeclared (first use in this function) Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
181 lines
4.4 KiB
C
181 lines
4.4 KiB
C
/*
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* Qualcomm Peripheral Image Loader
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*
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* Copyright (C) 2016 Linaro Ltd
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* Copyright (C) 2015 Sony Mobile Communications Inc
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* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/elf.h>
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#include <linux/firmware.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/remoteproc.h>
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#include <linux/sizes.h>
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#include <linux/slab.h>
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#include "remoteproc_internal.h"
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#include "qcom_mdt_loader.h"
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/**
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* qcom_mdt_find_rsc_table() - provide dummy resource table for remoteproc
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* @rproc: remoteproc handle
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* @fw: firmware header
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* @tablesz: outgoing size of the table
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*
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* Returns a dummy table.
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*/
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struct resource_table *qcom_mdt_find_rsc_table(struct rproc *rproc,
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const struct firmware *fw,
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int *tablesz)
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{
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static struct resource_table table = { .ver = 1, };
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*tablesz = sizeof(table);
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return &table;
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}
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EXPORT_SYMBOL_GPL(qcom_mdt_find_rsc_table);
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/**
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* qcom_mdt_parse() - extract useful parameters from the mdt header
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* @fw: firmware handle
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* @fw_addr: optional reference for base of the firmware's memory region
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* @fw_size: optional reference for size of the firmware's memory region
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* @fw_relocate: optional reference for flagging if the firmware is relocatable
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*
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* Returns 0 on success, negative errno otherwise.
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*/
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int qcom_mdt_parse(const struct firmware *fw, phys_addr_t *fw_addr,
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size_t *fw_size, bool *fw_relocate)
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{
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const struct elf32_phdr *phdrs;
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const struct elf32_phdr *phdr;
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const struct elf32_hdr *ehdr;
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phys_addr_t min_addr = (phys_addr_t)ULLONG_MAX;
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phys_addr_t max_addr = 0;
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bool relocate = false;
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int i;
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ehdr = (struct elf32_hdr *)fw->data;
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phdrs = (struct elf32_phdr *)(ehdr + 1);
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for (i = 0; i < ehdr->e_phnum; i++) {
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phdr = &phdrs[i];
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if (phdr->p_type != PT_LOAD)
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continue;
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if ((phdr->p_flags & QCOM_MDT_TYPE_MASK) == QCOM_MDT_TYPE_HASH)
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continue;
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if (!phdr->p_memsz)
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continue;
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if (phdr->p_flags & QCOM_MDT_RELOCATABLE)
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relocate = true;
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if (phdr->p_paddr < min_addr)
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min_addr = phdr->p_paddr;
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if (phdr->p_paddr + phdr->p_memsz > max_addr)
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max_addr = ALIGN(phdr->p_paddr + phdr->p_memsz, SZ_4K);
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}
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if (fw_addr)
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*fw_addr = min_addr;
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if (fw_size)
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*fw_size = max_addr - min_addr;
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if (fw_relocate)
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*fw_relocate = relocate;
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return 0;
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}
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EXPORT_SYMBOL_GPL(qcom_mdt_parse);
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/**
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* qcom_mdt_load() - load the firmware which header is defined in fw
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* @rproc: rproc handle
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* @fw: frimware object for the header
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* @firmware: filename of the firmware, for building .bXX names
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*
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* Returns 0 on success, negative errno otherwise.
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*/
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int qcom_mdt_load(struct rproc *rproc,
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const struct firmware *fw,
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const char *firmware)
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{
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const struct elf32_phdr *phdrs;
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const struct elf32_phdr *phdr;
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const struct elf32_hdr *ehdr;
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size_t fw_name_len;
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char *fw_name;
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void *ptr;
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int ret;
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int i;
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ehdr = (struct elf32_hdr *)fw->data;
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phdrs = (struct elf32_phdr *)(ehdr + 1);
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fw_name_len = strlen(firmware);
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if (fw_name_len <= 4)
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return -EINVAL;
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fw_name = kstrdup(firmware, GFP_KERNEL);
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if (!fw_name)
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return -ENOMEM;
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for (i = 0; i < ehdr->e_phnum; i++) {
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phdr = &phdrs[i];
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if (phdr->p_type != PT_LOAD)
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continue;
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if ((phdr->p_flags & QCOM_MDT_TYPE_MASK) == QCOM_MDT_TYPE_HASH)
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continue;
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if (!phdr->p_memsz)
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continue;
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ptr = rproc_da_to_va(rproc, phdr->p_paddr, phdr->p_memsz);
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if (!ptr) {
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dev_err(&rproc->dev, "segment outside memory range\n");
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ret = -EINVAL;
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break;
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}
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if (phdr->p_filesz) {
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sprintf(fw_name + fw_name_len - 3, "b%02d", i);
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ret = request_firmware(&fw, fw_name, &rproc->dev);
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if (ret) {
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dev_err(&rproc->dev, "failed to load %s\n",
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fw_name);
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break;
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}
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memcpy(ptr, fw->data, fw->size);
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release_firmware(fw);
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}
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if (phdr->p_memsz > phdr->p_filesz)
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memset(ptr + phdr->p_filesz, 0, phdr->p_memsz - phdr->p_filesz);
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}
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kfree(fw_name);
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return ret;
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}
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EXPORT_SYMBOL_GPL(qcom_mdt_load);
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MODULE_DESCRIPTION("Firmware parser for Qualcomm MDT format");
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MODULE_LICENSE("GPL v2");
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