123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
/*
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* am33xx_bbu_nand_xloadslots.c - barebox update handler for
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* the nand xload slots.
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*
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* Copyright (c) 2014 Wadim Egorov <w.egorov@phytec.de>, Phytec
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* 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 <common.h>
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#include <malloc.h>
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#include <errno.h>
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#include <bbu.h>
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#include <fs.h>
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#include <fcntl.h>
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#include <filetype.h>
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struct nand_bbu_handler {
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struct bbu_handler bbu_handler;
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char **devicefile;
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int num_devicefiles;
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};
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static int write_image(const char *devfile, const void *image, size_t size)
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{
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int fd = 0;
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int ret = 0;
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fd = open(devfile, O_WRONLY);
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if (fd < 0) {
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pr_err("could not open %s: %s\n", devfile,
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errno_str());
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return fd;
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}
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ret = erase(fd, ~0, 0);
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if (ret < 0) {
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pr_err("could not erase %s: %s\n", devfile,
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errno_str());
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close(fd);
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return ret;
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}
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ret = write(fd, image, size);
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if (ret < 0) {
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pr_err("could not write to fd %s: %s\n", devfile,
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errno_str());
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close(fd);
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return ret;
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}
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close(fd);
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return 0;
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}
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/*
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* This handler updates all given xload slots in nand with an image.
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*/
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static int nand_xloadslots_update_handler(struct bbu_handler *handler,
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struct bbu_data *data)
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{
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int ret = 0;
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const void *image = data->image;
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size_t size = data->len;
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struct nand_bbu_handler *nh;
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int i = 0;
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if (file_detect_type(image, size) != filetype_ch_image) {
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pr_err("%s is not a valid ch-image\n", data->imagefile);
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return -EINVAL;
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}
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nh = container_of(handler, struct nand_bbu_handler, bbu_handler);
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/* check if the devicefile has been overwritten */
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if (strcmp(data->devicefile, nh->devicefile[0]) != 0) {
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ret = bbu_confirm(data);
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if (ret != 0)
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return ret;
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ret = write_image(data->devicefile, image, size);
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if (ret != 0)
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return ret;
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} else {
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for (i = 0; i < nh->num_devicefiles; i++) {
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ret = write_image(nh->devicefile[i], image, size);
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if (ret != 0)
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return ret;
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}
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}
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return 0;
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}
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int am33xx_bbu_nand_xloadslots_register_handler(const char *name,
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char **devicefile,
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int num_devicefiles)
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{
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struct nand_bbu_handler *handler;
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int ret;
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handler = xzalloc(sizeof(*handler));
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handler->devicefile = devicefile;
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handler->num_devicefiles = num_devicefiles;
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handler->bbu_handler.devicefile = devicefile[0];
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handler->bbu_handler.handler = nand_xloadslots_update_handler;
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handler->bbu_handler.name = name;
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ret = bbu_register_handler(&handler->bbu_handler);
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if (ret)
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free(handler);
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return ret;
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}
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