remoteproc: qcom: mdt_loader: Refactor MDT loader
Pushing the SCM calls into the MDT loader reduces duplication in the callers and allows for non-remoteproc clients to use the helper for parsing and loading MDT files. Cc: Andy Gross <andy.gross@linaro.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>hifive-unleashed-5.1
Bjorn Andersson
parent
3e8b571a9a
commit
7f0dd07a9b
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@ -75,35 +75,9 @@ struct qcom_adsp {
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static int adsp_load(struct rproc *rproc, const struct firmware *fw)
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{
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struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
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phys_addr_t fw_addr;
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size_t fw_size;
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bool relocate;
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int ret;
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ret = qcom_scm_pas_init_image(adsp->pas_id, fw->data, fw->size);
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if (ret) {
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dev_err(&rproc->dev, "invalid firmware metadata\n");
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return ret;
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}
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ret = qcom_mdt_parse(fw, &fw_addr, &fw_size, &relocate);
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if (ret) {
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dev_err(&rproc->dev, "failed to parse mdt header\n");
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return ret;
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}
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if (relocate) {
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adsp->mem_reloc = fw_addr;
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ret = qcom_scm_pas_mem_setup(adsp->pas_id,
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adsp->mem_phys, fw_size);
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if (ret) {
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dev_err(&rproc->dev, "unable to setup memory for image\n");
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return ret;
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}
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}
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return qcom_mdt_load(rproc, fw, rproc->firmware);
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return qcom_mdt_load(adsp->dev, fw, rproc->firmware, adsp->pas_id,
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adsp->mem_region, adsp->mem_phys, adsp->mem_size);
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}
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static const struct rproc_fw_ops adsp_fw_ops = {
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@ -15,35 +15,44 @@
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* GNU General Public License for more details.
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*/
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#include <linux/device.h>
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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/qcom_scm.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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static bool mdt_phdr_valid(const struct elf32_phdr *phdr)
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{
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if (phdr->p_type != PT_LOAD)
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return false;
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if ((phdr->p_flags & QCOM_MDT_TYPE_MASK) == QCOM_MDT_TYPE_HASH)
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return false;
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if (!phdr->p_memsz)
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return false;
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return true;
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}
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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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* qcom_mdt_get_size() - acquire size of the memory region needed to load mdt
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* @fw: firmware object for the mdt file
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*
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* Returns 0 on success, negative errno otherwise.
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* Returns size of the loaded firmware blob, or -EINVAL on failure.
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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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ssize_t qcom_mdt_get_size(const struct firmware *fw)
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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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@ -52,18 +61,9 @@ int qcom_mdt_parse(const struct firmware *fw, phys_addr_t *fw_addr,
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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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if (!mdt_phdr_valid(phdr))
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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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@ -71,39 +71,44 @@ int qcom_mdt_parse(const struct firmware *fw, phys_addr_t *fw_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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return min_addr < max_addr ? max_addr - min_addr : -EINVAL;
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}
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EXPORT_SYMBOL_GPL(qcom_mdt_parse);
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EXPORT_SYMBOL_GPL(qcom_mdt_get_size);
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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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* qcom_mdt_load() - load the firmware which header is loaded as fw
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* @dev: device handle to associate resources with
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* @fw: firmware object for the mdt file
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* @firmware: name of the firmware, for construction of segment file names
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* @pas_id: PAS identifier
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* @mem_region: allocated memory region to load firmware into
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* @mem_phys: physical address of allocated memory region
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* @mem_size: size of the allocated memory region
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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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int qcom_mdt_load(struct device *dev, const struct firmware *fw,
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const char *firmware, int pas_id, void *mem_region,
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phys_addr_t mem_phys, size_t mem_size)
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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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const struct firmware *seg_fw;
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phys_addr_t mem_reloc;
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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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size_t fw_name_len;
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size_t offset;
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char *fw_name;
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bool relocate = false;
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void *ptr;
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int ret;
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int i;
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if (!fw || !mem_region || !mem_phys || !mem_size)
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return -EINVAL;
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ehdr = (struct elf32_hdr *)fw->data;
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phdrs = (struct elf32_phdr *)(ehdr + 1);
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@ -115,31 +120,68 @@ int qcom_mdt_load(struct rproc *rproc,
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if (!fw_name)
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return -ENOMEM;
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ret = qcom_scm_pas_init_image(pas_id, fw->data, fw->size);
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if (ret) {
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dev_err(dev, "invalid firmware metadata\n");
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goto out;
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}
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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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if (!mdt_phdr_valid(phdr))
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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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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 (relocate) {
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ret = qcom_scm_pas_mem_setup(pas_id, mem_phys, max_addr - min_addr);
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if (ret) {
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dev_err(dev, "unable to setup relocation\n");
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goto out;
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}
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/*
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* The image is relocatable, so offset each segment based on
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* the lowest segment address.
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*/
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mem_reloc = min_addr;
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} else {
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/*
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* Image is not relocatable, so offset each segment based on
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* the allocated physical chunk of memory.
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*/
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mem_reloc = mem_phys;
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}
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for (i = 0; i < ehdr->e_phnum; i++) {
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phdr = &phdrs[i];
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if (!mdt_phdr_valid(phdr))
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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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offset = phdr->p_paddr - mem_reloc;
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if (offset < 0 || offset + phdr->p_memsz > mem_size) {
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dev_err(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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ptr = mem_region + offset;
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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(&seg_fw, fw_name, &rproc->dev);
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ret = request_firmware(&seg_fw, fw_name, 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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dev_err(dev, "failed to load %s\n", fw_name);
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break;
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}
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@ -152,6 +194,7 @@ int qcom_mdt_load(struct rproc *rproc,
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memset(ptr + phdr->p_filesz, 0, phdr->p_memsz - phdr->p_filesz);
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}
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out:
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kfree(fw_name);
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return ret;
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@ -5,8 +5,9 @@
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#define QCOM_MDT_TYPE_HASH (2 << 24)
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#define QCOM_MDT_RELOCATABLE BIT(27)
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int qcom_mdt_load(struct rproc *rproc, const struct firmware *fw, const char *fw_name);
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int qcom_mdt_parse(const struct firmware *fw, phys_addr_t *fw_addr, size_t *fw_size, bool *fw_relocate);
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ssize_t qcom_mdt_get_size(const struct firmware *fw);
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int qcom_mdt_load(struct device *dev, const struct firmware *fw,
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const char *fw_name, int pas_id, void *mem_region,
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phys_addr_t mem_phys, size_t mem_size);
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#endif
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@ -153,34 +153,9 @@ void qcom_wcnss_assign_iris(struct qcom_wcnss *wcnss,
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static int wcnss_load(struct rproc *rproc, const struct firmware *fw)
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{
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struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
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phys_addr_t fw_addr;
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size_t fw_size;
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bool relocate;
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int ret;
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ret = qcom_scm_pas_init_image(WCNSS_PAS_ID, fw->data, fw->size);
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if (ret) {
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dev_err(&rproc->dev, "invalid firmware metadata\n");
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return ret;
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}
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ret = qcom_mdt_parse(fw, &fw_addr, &fw_size, &relocate);
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if (ret) {
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dev_err(&rproc->dev, "failed to parse mdt header\n");
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return ret;
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}
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if (relocate) {
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wcnss->mem_reloc = fw_addr;
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ret = qcom_scm_pas_mem_setup(WCNSS_PAS_ID, wcnss->mem_phys, fw_size);
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if (ret) {
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dev_err(&rproc->dev, "unable to setup memory for image\n");
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return ret;
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}
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}
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return qcom_mdt_load(rproc, fw, rproc->firmware);
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return qcom_mdt_load(wcnss->dev, fw, rproc->firmware, WCNSS_PAS_ID,
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wcnss->mem_region, wcnss->mem_phys, wcnss->mem_size);
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}
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static const struct rproc_fw_ops wcnss_fw_ops = {
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