mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
154 lines
3.3 KiB
C
154 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
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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 <div64.h>
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#include <dfu.h>
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#include <spi.h>
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#include <spi_flash.h>
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static int dfu_get_medium_size_sf(struct dfu_entity *dfu, u64 *size)
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{
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*size = dfu->data.sf.size;
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return 0;
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}
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static int dfu_read_medium_sf(struct dfu_entity *dfu, u64 offset, void *buf,
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long *len)
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{
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return spi_flash_read(dfu->data.sf.dev, dfu->data.sf.start + offset,
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*len, buf);
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}
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static u64 find_sector(struct dfu_entity *dfu, u64 start, u64 offset)
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{
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return (lldiv((start + offset), dfu->data.sf.dev->sector_size)) *
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dfu->data.sf.dev->sector_size;
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}
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static int dfu_write_medium_sf(struct dfu_entity *dfu,
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u64 offset, void *buf, long *len)
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{
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int ret;
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ret = spi_flash_erase(dfu->data.sf.dev,
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find_sector(dfu, dfu->data.sf.start, offset),
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dfu->data.sf.dev->sector_size);
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if (ret)
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return ret;
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ret = spi_flash_write(dfu->data.sf.dev, dfu->data.sf.start + offset,
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*len, buf);
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if (ret)
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return ret;
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return 0;
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}
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static int dfu_flush_medium_sf(struct dfu_entity *dfu)
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{
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return 0;
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}
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static unsigned int dfu_polltimeout_sf(struct dfu_entity *dfu)
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{
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return DFU_DEFAULT_POLL_TIMEOUT;
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}
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static void dfu_free_entity_sf(struct dfu_entity *dfu)
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{
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spi_flash_free(dfu->data.sf.dev);
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}
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static struct spi_flash *parse_dev(char *devstr)
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{
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unsigned int bus;
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unsigned int cs;
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unsigned int speed = CONFIG_SF_DEFAULT_SPEED;
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unsigned int mode = CONFIG_SF_DEFAULT_MODE;
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char *s, *endp;
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struct spi_flash *dev;
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s = strsep(&devstr, ":");
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if (!s || !*s || (bus = simple_strtoul(s, &endp, 0), *endp)) {
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printf("Invalid SPI bus %s\n", s);
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return NULL;
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}
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s = strsep(&devstr, ":");
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if (!s || !*s || (cs = simple_strtoul(s, &endp, 0), *endp)) {
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printf("Invalid SPI chip-select %s\n", s);
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return NULL;
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}
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s = strsep(&devstr, ":");
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if (s && *s) {
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speed = simple_strtoul(s, &endp, 0);
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if (*endp || !speed) {
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printf("Invalid SPI speed %s\n", s);
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return NULL;
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}
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}
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s = strsep(&devstr, ":");
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if (s && *s) {
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mode = simple_strtoul(s, &endp, 0);
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if (*endp || mode > 3) {
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printf("Invalid SPI mode %s\n", s);
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return NULL;
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}
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}
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dev = spi_flash_probe(bus, cs, speed, mode);
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if (!dev) {
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printf("Failed to create SPI flash at %d:%d:%d:%d\n",
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bus, cs, speed, mode);
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return NULL;
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}
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return dev;
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}
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int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char *s)
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{
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char *st;
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char *devstr_bkup = strdup(devstr);
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dfu->data.sf.dev = parse_dev(devstr_bkup);
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free(devstr_bkup);
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if (!dfu->data.sf.dev)
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return -ENODEV;
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dfu->dev_type = DFU_DEV_SF;
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dfu->max_buf_size = dfu->data.sf.dev->sector_size;
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st = strsep(&s, " ");
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if (!strcmp(st, "raw")) {
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dfu->layout = DFU_RAW_ADDR;
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dfu->data.sf.start = simple_strtoul(s, &s, 16);
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s++;
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dfu->data.sf.size = simple_strtoul(s, &s, 16);
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} else {
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printf("%s: Memory layout (%s) not supported!\n", __func__, st);
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spi_flash_free(dfu->data.sf.dev);
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return -1;
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}
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dfu->get_medium_size = dfu_get_medium_size_sf;
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dfu->read_medium = dfu_read_medium_sf;
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dfu->write_medium = dfu_write_medium_sf;
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dfu->flush_medium = dfu_flush_medium_sf;
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dfu->poll_timeout = dfu_polltimeout_sf;
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dfu->free_entity = dfu_free_entity_sf;
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/* initial state */
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dfu->inited = 0;
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return 0;
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}
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