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https://github.com/AsahiLinux/u-boot
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6f12ebf6ea
This allows SPI Flash to be programmed using DFU. Signed-off-by: Stephen Warren <swarren@nvidia.com>
139 lines
2.9 KiB
C
139 lines
2.9 KiB
C
/*
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* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0+
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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_flash.h>
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static long dfu_get_medium_size_sf(struct dfu_entity *dfu)
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{
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return dfu->data.sf.size;
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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, offset, *len, buf);
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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, offset, *len);
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if (ret)
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return ret;
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ret = spi_flash_write(dfu->data.sf.dev, offset, *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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dfu->data.sf.dev = parse_dev(devstr);
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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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