upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
149 lines
2.9 KiB
149 lines
2.9 KiB
/*
|
|
* Copyright (c) 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <libfdt.h>
|
|
#include <malloc.h>
|
|
#include <mapmem.h>
|
|
#include <regmap.h>
|
|
#include <asm/io.h>
|
|
#include <dm/of_addr.h>
|
|
#include <linux/ioport.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static struct regmap *regmap_alloc_count(int count)
|
|
{
|
|
struct regmap *map;
|
|
|
|
map = malloc(sizeof(struct regmap));
|
|
if (!map)
|
|
return NULL;
|
|
if (count <= 1) {
|
|
map->range = &map->base_range;
|
|
} else {
|
|
map->range = malloc(count * sizeof(struct regmap_range));
|
|
if (!map->range) {
|
|
free(map);
|
|
return NULL;
|
|
}
|
|
}
|
|
map->range_count = count;
|
|
|
|
return map;
|
|
}
|
|
|
|
#if CONFIG_IS_ENABLED(OF_PLATDATA)
|
|
int regmap_init_mem_platdata(struct udevice *dev, u32 *reg, int count,
|
|
struct regmap **mapp)
|
|
{
|
|
struct regmap_range *range;
|
|
struct regmap *map;
|
|
|
|
map = regmap_alloc_count(count);
|
|
if (!map)
|
|
return -ENOMEM;
|
|
|
|
map->base = *reg;
|
|
for (range = map->range; count > 0; reg += 2, range++, count--) {
|
|
range->start = *reg;
|
|
range->size = reg[1];
|
|
}
|
|
|
|
*mapp = map;
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
int regmap_init_mem(struct udevice *dev, struct regmap **mapp)
|
|
{
|
|
struct regmap_range *range;
|
|
struct regmap *map;
|
|
int count;
|
|
int addr_len, size_len, both_len;
|
|
int len;
|
|
int index;
|
|
ofnode node = dev_ofnode(dev);
|
|
struct resource r;
|
|
|
|
addr_len = dev_read_simple_addr_cells(dev->parent);
|
|
size_len = dev_read_simple_size_cells(dev->parent);
|
|
both_len = addr_len + size_len;
|
|
|
|
len = dev_read_size(dev, "reg");
|
|
if (len < 0)
|
|
return len;
|
|
len /= sizeof(fdt32_t);
|
|
count = len / both_len;
|
|
if (!count)
|
|
return -EINVAL;
|
|
|
|
map = regmap_alloc_count(count);
|
|
if (!map)
|
|
return -ENOMEM;
|
|
|
|
for (range = map->range, index = 0; count > 0;
|
|
count--, range++, index++) {
|
|
fdt_size_t sz;
|
|
if (of_live_active()) {
|
|
of_address_to_resource(ofnode_to_np(node), index, &r);
|
|
range->start = r.start;
|
|
range->size = r.end - r.start + 1;
|
|
} else {
|
|
range->start = fdtdec_get_addr_size_fixed(gd->fdt_blob,
|
|
dev_of_offset(dev), "reg", index,
|
|
addr_len, size_len, &sz, true);
|
|
range->size = sz;
|
|
}
|
|
}
|
|
map->base = map->range[0].start;
|
|
|
|
*mapp = map;
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
void *regmap_get_range(struct regmap *map, unsigned int range_num)
|
|
{
|
|
struct regmap_range *range;
|
|
|
|
if (range_num >= map->range_count)
|
|
return NULL;
|
|
range = &map->range[range_num];
|
|
|
|
return map_sysmem(range->start, range->size);
|
|
}
|
|
|
|
int regmap_uninit(struct regmap *map)
|
|
{
|
|
if (map->range_count > 1)
|
|
free(map->range);
|
|
free(map);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int regmap_read(struct regmap *map, uint offset, uint *valp)
|
|
{
|
|
uint32_t *ptr = map_physmem(map->base + offset, 4, MAP_NOCACHE);
|
|
|
|
*valp = le32_to_cpu(readl(ptr));
|
|
|
|
return 0;
|
|
}
|
|
|
|
int regmap_write(struct regmap *map, uint offset, uint val)
|
|
{
|
|
uint32_t *ptr = map_physmem(map->base + offset, 4, MAP_NOCACHE);
|
|
|
|
writel(cpu_to_le32(val), ptr);
|
|
|
|
return 0;
|
|
}
|
|
|