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https://github.com/linux-msm/qdl.git
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8f7987f756
On some newer platforms the device ignore the configure request to disable ZLP, causing the Firehose program request to stall, when the device is waiting for a ZLP to end a transfer. Mitigate this by circumventing the qcserial driver and drive the USB traffic directly using USBFS. The tool will attempt to detach qcserial from the device, in case it's already attached, so no changes are needed in the kernel or system configuration. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
115 lines
3.4 KiB
C
115 lines
3.4 KiB
C
/*
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* Copyright (c) 2016-2017, Linaro Ltd.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <errno.h>
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#include <string.h>
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#include <libxml/parser.h>
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#include <libxml/tree.h>
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#include "patch.h"
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#include "qdl.h"
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static struct patch *patches;
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static struct patch *patches_last;
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int patch_load(const char *patch_file)
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{
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struct patch *patch;
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xmlNode *node;
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xmlNode *root;
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xmlDoc *doc;
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int errors;
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doc = xmlReadFile(patch_file, NULL, 0);
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if (!doc) {
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fprintf(stderr, "[PATCH] failed to parse %s\n", patch_file);
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return -EINVAL;
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}
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root = xmlDocGetRootElement(doc);
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for (node = root->children; node ; node = node->next) {
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if (node->type != XML_ELEMENT_NODE)
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continue;
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if (xmlStrcmp(node->name, (xmlChar*)"patch")) {
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fprintf(stderr, "[PATCH] unrecognized tag \"%s\", ignoring\n", node->name);
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continue;
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}
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errors = 0;
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patch = calloc(1, sizeof(struct patch));
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patch->sector_size = attr_as_unsigned(node, "SECTOR_SIZE_IN_BYTES", &errors);
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patch->byte_offset = attr_as_unsigned(node, "byte_offset", &errors);
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patch->filename = attr_as_string(node, "filename", &errors);
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patch->partition = attr_as_unsigned(node, "physical_partition_number", &errors);
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patch->size_in_bytes = attr_as_unsigned(node, "size_in_bytes", &errors);
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patch->start_sector = attr_as_string(node, "start_sector", &errors);
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patch->value = attr_as_string(node, "value", &errors);
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patch->what = attr_as_string(node, "what", &errors);
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if (errors) {
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fprintf(stderr, "[PATCH] errors while parsing patch\n");
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free(patch);
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continue;
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}
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if (patches) {
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patches_last->next = patch;
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patches_last = patch;
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} else {
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patches = patch;
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patches_last = patch;
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}
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}
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xmlFreeDoc(doc);
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return 0;
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}
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int patch_execute(struct qdl_device *qdl, int (*apply)(struct qdl_device *qdl, struct patch *patch))
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{
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struct patch *patch;
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int ret;
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for (patch = patches; patch; patch = patch->next) {
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if (strcmp(patch->filename, "DISK"))
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continue;
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ret = apply(qdl, patch);
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if (ret)
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return ret;
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}
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return 0;
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}
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