void
do_hw_attach_regs (struct hw *hw)
{
static const char *(reg_property_names[]) = {
"attach-addresses",
"assigned-addresses",
"reg",
"alternate-reg" ,
NULL
};
const char **reg_property_name;
int nr_valid_reg_properties = 0;
for (reg_property_name = reg_property_names;
*reg_property_name != NULL;
reg_property_name++)
{
if (hw_find_property (hw, *reg_property_name) != NULL)
{
reg_property_spec reg;
int reg_entry;
for (reg_entry = 0;
hw_find_reg_array_property (hw, *reg_property_name, reg_entry,
®);
reg_entry++)
{
unsigned_word attach_address;
int attach_space;
unsigned attach_size;
if (!hw_unit_address_to_attach_address (hw_parent (hw),
®.address,
&attach_space,
&attach_address,
hw))
continue;
if (!hw_unit_size_to_attach_size (hw_parent (hw),
®.size,
&attach_size, hw))
continue;
hw_attach_address (hw_parent (hw),
0,
attach_space, attach_address, attach_size,
hw);
nr_valid_reg_properties++;
}
/* if first option matches don't try for any others */
if (reg_property_name == reg_property_names)
break;
}
}
}
static void
attach_m68hc11eepr_regs (struct hw *me,
struct m68hc11eepr *controller)
{
unsigned_word attach_address;
int attach_space;
unsigned attach_size;
reg_property_spec reg;
if (hw_find_property (me, "reg") == NULL)
hw_abort (me, "Missing \"reg\" property");
if (!hw_find_reg_array_property (me, "reg", 0, ®))
hw_abort (me, "\"reg\" property must contain one addr/size entry");
hw_unit_address_to_attach_address (hw_parent (me),
®.address,
&attach_space,
&attach_address,
me);
hw_unit_size_to_attach_size (hw_parent (me),
®.size,
&attach_size, me);
/* Attach the two IO registers that control the EEPROM.
The EEPROM is only attached at reset time because it may
be enabled/disabled by the EEON bit in the CONFIG register. */
hw_attach_address (hw_parent (me), M6811_IO_LEVEL,
io_map, M6811_PPROG, 1, me);
hw_attach_address (hw_parent (me), M6811_IO_LEVEL,
io_map, M6811_CONFIG, 1, me);
if (hw_find_property (me, "file") == NULL)
controller->file_name = "m6811.eeprom";
else
controller->file_name = hw_find_string_property (me, "file");
controller->attach_space = attach_space;
controller->base_address = attach_address;
controller->eeprom = (char*) hw_malloc (me, attach_size + 1);
controller->eeprom_min_cycles = 10000;
controller->size = attach_size + 1;
controller->mapped = 0;
m6811eepr_memory_rw (controller, O_RDONLY);
}
static void
attach_tx3904sio_regs (struct hw *me,
struct tx3904sio *controller)
{
unsigned_word attach_address;
int attach_space;
unsigned attach_size;
reg_property_spec reg;
if (hw_find_property (me, "reg") == NULL)
hw_abort (me, "Missing \"reg\" property");
if (!hw_find_reg_array_property (me, "reg", 0, ®))
hw_abort (me, "\"reg\" property must contain one addr/size entry");
hw_unit_address_to_attach_address (hw_parent (me),
®.address,
&attach_space,
&attach_address,
me);
hw_unit_size_to_attach_size (hw_parent (me),
®.size,
&attach_size, me);
hw_attach_address (hw_parent (me), 0,
attach_space, attach_address, attach_size,
me);
if(hw_find_property(me, "backend") != NULL)
{
const char* value = hw_find_string_property(me, "backend");
if(! strcmp(value, "tcp"))
controller->backend = sio_tcp;
else if(! strcmp(value, "stdio"))
controller->backend = sio_stdio;
else
hw_abort(me, "illegal value for backend parameter `%s': use tcp or stdio", value);
}
controller->base_address = attach_address;
}
static void
attach_tx3904tmr_regs (struct hw *me,
struct tx3904tmr *controller)
{
unsigned_word attach_address;
int attach_space;
unsigned attach_size;
reg_property_spec reg;
if (hw_find_property (me, "reg") == NULL)
hw_abort (me, "Missing \"reg\" property");
if (!hw_find_reg_array_property (me, "reg", 0, ®))
hw_abort (me, "\"reg\" property must contain one addr/size entry");
hw_unit_address_to_attach_address (hw_parent (me),
®.address,
&attach_space,
&attach_address,
me);
hw_unit_size_to_attach_size (hw_parent (me),
®.size,
&attach_size, me);
hw_attach_address (hw_parent (me), 0,
attach_space, attach_address, attach_size,
me);
if(hw_find_property(me, "clock") != NULL)
controller->clock_ticks = (unsigned_4) hw_find_integer_property(me, "clock");
if(hw_find_property(me, "ext") != NULL)
controller->ext_ticks = (unsigned_4) hw_find_integer_property(me, "ext");
controller->base_address = attach_address;
}
static void
attach_nvram_regs (struct hw *me, struct nvram *controller)
{
unsigned_word attach_address;
int attach_space;
unsigned attach_size;
reg_property_spec reg;
int result, oerrno;
/* Get ram bank description (base and size). */
if (hw_find_property (me, "reg") == NULL)
hw_abort (me, "Missing \"reg\" property");
if (!hw_find_reg_array_property (me, "reg", 0, ®))
hw_abort (me, "\"reg\" property must contain one addr/size entry");
hw_unit_address_to_attach_address (hw_parent (me),
®.address,
&attach_space,
&attach_address,
me);
hw_unit_size_to_attach_size (hw_parent (me),
®.size,
&attach_size, me);
hw_attach_address (hw_parent (me), 0,
attach_space, attach_address, attach_size,
me);
controller->mode = NVRAM_SAVE_ALL;
controller->base_address = attach_address;
controller->size = attach_size;
controller->fd = -1;
/* Get the file where the ram content must be loaded/saved. */
if(hw_find_property (me, "file") == NULL)
hw_abort (me, "Missing \"file\" property");
controller->file_name = hw_find_string_property (me, "file");
/* Get the mode which defines how to save the memory. */
if(hw_find_property (me, "mode") != NULL)
{
const char *value = hw_find_string_property (me, "mode");
if (strcmp (value, "map") == 0)
controller->mode = NVRAM_MAP_FILE;
else if (strcmp (value, "save-modified") == 0)
controller->mode = NVRAM_SAVE_MODIFIED;
else if (strcmp (value, "save-all") == 0)
controller->mode = NVRAM_SAVE_ALL;
else
hw_abort (me, "illegal value for mode parameter `%s': "
"use map, save-modified or save-all", value);
}
/* Initialize the ram by loading/mapping the file in memory.
If the file does not exist, create and give it some content. */
switch (controller->mode)
{
case NVRAM_MAP_FILE:
hw_abort (me, "'map' mode is not yet implemented, use 'save-modified'");
break;
case NVRAM_SAVE_MODIFIED:
case NVRAM_SAVE_ALL:
controller->data = (char*) hw_malloc (me, attach_size);
if (controller->data == 0)
hw_abort (me, "Not enough memory, try to use the mode 'map'");
memset (controller->data, 0, attach_size);
controller->fd = open (controller->file_name, O_RDWR);
if (controller->fd < 0)
{
controller->fd = open (controller->file_name,
O_RDWR | O_CREAT, 0644);
if (controller->fd < 0)
hw_abort (me, "Cannot open or create file '%s'",
controller->file_name);
result = write (controller->fd, controller->data, attach_size);
if (result != attach_size)
{
oerrno = errno;
hw_free (me, controller->data);
close (controller->fd);
errno = oerrno;
hw_abort (me, "Failed to save the ram content");
}
}
else
{
result = read (controller->fd, controller->data, attach_size);
if (result != attach_size)
{
oerrno = errno;
hw_free (me, controller->data);
close (controller->fd);
errno = oerrno;
hw_abort (me, "Failed to load the ram content");
}
}
if (controller->mode == NVRAM_SAVE_ALL)
{
close (controller->fd);
controller->fd = -1;
}
break;
default:
break;
}
}
/* Device tree options:
Required:
.../reg <addr> <len>
.../cmdset <primary; integer> [alt; integer]
Optional:
.../size <device size (must be pow of 2)>
.../width <8|16|32>
.../write_size <integer (must be pow of 2)>
.../erase_regions <number blocks> <block size> \
[<number blocks> <block size> ...]
.../voltage <vcc min> <vcc max> <vpp min> <vpp max>
.../timeouts <typ unit write> <typ buf write> \
<typ block erase> <typ chip erase> \
<max unit write> <max buf write> \
<max block erase> <max chip erase>
.../file <file> [ro|rw]
Defaults:
size: <len> from "reg"
width: 8
write_size: 0 (not supported)
erase_region: 1 (can only erase whole chip)
voltage: 0.0V (for all)
timeouts: typ: 1µs, not supported, 1ms, not supported
max: 1µs, 1ms, 1ms, not supported
TODO: Verify user args are valid (e.g. voltage is 8 bits). */
static void
attach_cfi_regs (struct hw *me, struct cfi *cfi)
{
address_word attach_address;
int attach_space;
unsigned attach_size;
reg_property_spec reg;
bool fd_writable;
int i, ret, fd;
signed_cell ival;
if (hw_find_property (me, "reg") == NULL)
hw_abort (me, "Missing \"reg\" property");
if (hw_find_property (me, "cmdset") == NULL)
hw_abort (me, "Missing \"cmdset\" property");
if (!hw_find_reg_array_property (me, "reg", 0, ®))
hw_abort (me, "\"reg\" property must contain three addr/size entries");
hw_unit_address_to_attach_address (hw_parent (me),
®.address,
&attach_space, &attach_address, me);
hw_unit_size_to_attach_size (hw_parent (me), ®.size, &attach_size, me);
hw_attach_address (hw_parent (me),
0, attach_space, attach_address, attach_size, me);
/* Extract the desired flash command set. */
ret = hw_find_integer_array_property (me, "cmdset", 0, &ival);
if (ret != 1 && ret != 2)
hw_abort (me, "\"cmdset\" property takes 1 or 2 entries");
cfi_encode_16bit (cfi->query.p_id, ival);
for (i = 0; i < ARRAY_SIZE (cfi_cmdsets); ++i)
if (cfi_cmdsets[i]->id == ival)
cfi->cmdset = cfi_cmdsets[i];
if (cfi->cmdset == NULL)
hw_abort (me, "cmdset %u not supported", ival);
if (ret == 2)
{
hw_find_integer_array_property (me, "cmdset", 1, &ival);
cfi_encode_16bit (cfi->query.a_id, ival);
}
/* Extract the desired device size. */
if (hw_find_property (me, "size"))
cfi->dev_size = hw_find_integer_property (me, "size");
else
cfi->dev_size = attach_size;
cfi->query.dev_size = log2 (cfi->dev_size);
/* Extract the desired flash width. */
if (hw_find_property (me, "width"))
{
cfi->width = hw_find_integer_property (me, "width");
if (cfi->width != 8 && cfi->width != 16 && cfi->width != 32)
hw_abort (me, "\"width\" must be 8 or 16 or 32, not %u", cfi->width);
}
else
/* Default to 8 bit. */
cfi->width = 8;
/* Turn 8/16/32 into 1/2/4. */
cfi->width /= 8;
/* Extract optional write buffer size. */
if (hw_find_property (me, "write_size"))
{
ival = hw_find_integer_property (me, "write_size");
cfi_encode_16bit (cfi->query.max_buf_write_len, log2 (ival));
}
/* Extract optional erase regions. */
if (hw_find_property (me, "erase_regions"))
{
ret = hw_find_integer_array_property (me, "erase_regions", 0, &ival);
if (ret % 2)
hw_abort (me, "\"erase_regions\" must be specified in sets of 2");
cfi->erase_region_info = HW_NALLOC (me, unsigned char, ret / 2);
cfi->erase_regions = HW_NALLOC (me, struct cfi_erase_region, ret / 2);
for (i = 0; i < ret; i += 2)
{
unsigned blocks, size;
hw_find_integer_array_property (me, "erase_regions", i, &ival);
blocks = ival;
hw_find_integer_array_property (me, "erase_regions", i + 1, &ival);
size = ival;
cfi_add_erase_region (me, cfi, blocks, size);
}
}
