mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 18:59:44 +00:00
dd64827eb6
Devices are not all identified by a single integer. To support this, defer the parsing of the device string to the IO backed, so that it can apply the appropriate rules. SPI devices are specified as controller:chip_select. SPI/SF support will be added soon. MMC devices can also be specified as controller[.hwpart][:partition] in many commands, although we don't support that syntax in DFU. Signed-off-by: Stephen Warren <swarren@nvidia.com>
78 lines
1.7 KiB
C
78 lines
1.7 KiB
C
/*
|
|
* (C) Copyright 2013
|
|
* Afzal Mohammed <afzal.mohd.ma@gmail.com>
|
|
*
|
|
* Reference: dfu_mmc.c
|
|
* Copyright (C) 2012 Samsung Electronics
|
|
* author: Lukasz Majewski <l.majewski@samsung.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <malloc.h>
|
|
#include <errno.h>
|
|
#include <dfu.h>
|
|
|
|
static int dfu_transfer_medium_ram(enum dfu_op op, struct dfu_entity *dfu,
|
|
u64 offset, void *buf, long *len)
|
|
{
|
|
if (dfu->layout != DFU_RAM_ADDR) {
|
|
error("unsupported layout: %s\n", dfu_get_layout(dfu->layout));
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (offset > dfu->data.ram.size) {
|
|
error("request exceeds allowed area\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (op == DFU_OP_WRITE)
|
|
memcpy(dfu->data.ram.start + offset, buf, *len);
|
|
else
|
|
memcpy(buf, dfu->data.ram.start + offset, *len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dfu_write_medium_ram(struct dfu_entity *dfu, u64 offset,
|
|
void *buf, long *len)
|
|
{
|
|
return dfu_transfer_medium_ram(DFU_OP_WRITE, dfu, offset, buf, len);
|
|
}
|
|
|
|
long dfu_get_medium_size_ram(struct dfu_entity *dfu)
|
|
{
|
|
return dfu->data.ram.size;
|
|
}
|
|
|
|
static int dfu_read_medium_ram(struct dfu_entity *dfu, u64 offset,
|
|
void *buf, long *len)
|
|
{
|
|
return dfu_transfer_medium_ram(DFU_OP_READ, dfu, offset, buf, len);
|
|
}
|
|
|
|
int dfu_fill_entity_ram(struct dfu_entity *dfu, char *devstr, char *s)
|
|
{
|
|
char *st;
|
|
|
|
dfu->dev_type = DFU_DEV_RAM;
|
|
st = strsep(&s, " ");
|
|
if (strcmp(st, "ram")) {
|
|
error("unsupported device: %s\n", st);
|
|
return -ENODEV;
|
|
}
|
|
|
|
dfu->layout = DFU_RAM_ADDR;
|
|
dfu->data.ram.start = (void *)simple_strtoul(s, &s, 16);
|
|
s++;
|
|
dfu->data.ram.size = simple_strtoul(s, &s, 16);
|
|
|
|
dfu->write_medium = dfu_write_medium_ram;
|
|
dfu->get_medium_size = dfu_get_medium_size_ram;
|
|
dfu->read_medium = dfu_read_medium_ram;
|
|
|
|
dfu->inited = 0;
|
|
|
|
return 0;
|
|
}
|