u-boot/drivers/dfu/dfu_ram.c
Heinrich Schuchardt 73f4ebb659 dfu: fix dfu tftp on sandbox
The environment variable loadaddr is in the virtual address space of the
sandbox. To get the actual memory address where the FIT image has been
loaded we have to convert this address according to the memory mapping of
the sandbox.

Equally the addresses in the *.its file have to be converted when used in
the dfu_ram driver.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-09-01 14:47:43 +02:00

87 lines
2 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (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>
*/
#include <common.h>
#include <malloc.h>
#include <mapmem.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) {
pr_err("unsupported layout: %s\n", dfu_get_layout(dfu->layout));
return -EINVAL;
}
if (offset > dfu->data.ram.size) {
pr_err("request exceeds allowed area\n");
return -EINVAL;
}
if (op == DFU_OP_WRITE)
memcpy(map_sysmem(dfu->data.ram.start + offset, 0), buf, *len);
else
memcpy(buf, map_sysmem(dfu->data.ram.start + offset, 0), *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);
}
int dfu_get_medium_size_ram(struct dfu_entity *dfu, u64 *size)
{
*size = dfu->data.ram.size;
return 0;
}
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)
{
const char *argv[3];
const char **parg = argv;
for (; parg < argv + sizeof(argv) / sizeof(*argv); ++parg) {
*parg = strsep(&s, " ");
if (*parg == NULL) {
pr_err("Invalid number of arguments.\n");
return -ENODEV;
}
}
dfu->dev_type = DFU_DEV_RAM;
if (strcmp(argv[0], "ram")) {
pr_err("unsupported device: %s\n", argv[0]);
return -ENODEV;
}
dfu->layout = DFU_RAM_ADDR;
dfu->data.ram.start = simple_strtoul(argv[1], NULL, 16);
dfu->data.ram.size = simple_strtoul(argv[2], NULL, 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;
}