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#include <common.h>
#include <command.h>
#include <init.h>
#include <driver.h>
#include <malloc.h>
#include <errno.h>
#include <partition.h>
#include <xfuncs.h>
struct device_d *dev_add_partition(struct device_d *dev, unsigned long offset, size_t size, char *name)
{
struct partition *part;
if (offset + size > dev->size)
return NULL;
part = xzalloc(sizeof(struct partition));
strcpy(part->device.name, "partition");
part->device.map_base = dev->map_base + offset;
part->device.size = size;
part->device.type_data = part;
get_free_deviceid(part->device.id, name);
part->offset = offset;
part->physdev = dev;
register_device(&part->device);
if (part->device.driver)
return &part->device;
free(part);
return 0;
}
static void dev_del_partitions(struct device_d *dev)
{
struct device_d *p;
char buf[MAX_DRIVER_NAME];
int i = 0;
/* This is lame. Devices should to able to have children */
while(1) {
sprintf(buf, "%s.%d", dev->id, i);
p = device_from_spec_str(buf, NULL);
if (p)
unregister_device(p);
else
break;
i++;
}
}
int mtd_part_do_parse_one (struct partition *part, const char *str, char **endp)
{
ulong size;
char *end;
char buf[MAX_DRIVER_NAME];
int ro = 0;
memset(buf, 0, MAX_DRIVER_NAME);
if (*str == '-') {
size = part->physdev->size - part->offset;
end = (char *)str + 1;
} else {
size = strtoul_suffix(str, &end, 0);
}
if (size + part->offset > part->physdev->size) {
printf("partition end is beyond device\n");
return -EINVAL;
}
str = end;
if (*str == '(') {
str++;
end = strchr(str, ')');
if (!end) {
printf("could not find matching ')'\n");
return -EINVAL;
}
if (end - str >= MAX_DRIVER_NAME) {
printf("device name too long\n");
return -EINVAL;
}
memcpy(part->name, str, end - str);
end++;
}
str = end;
if (*str == 'r' && *(str + 1) == 'o') {
ro = 1;
end = (char *)(str + 2);
}
if (endp)
*endp = end;
strcpy(part->device.name, "partition");
part->device.size = size;
return 0;
}
int do_addpart ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
struct partition *part;
struct device_d *dev;
char *endp;
int num = 0;
unsigned long offset;
if (argc != 2) {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
dev = device_from_spec_str(argv[1], &endp);
if (!dev) {
printf("no such device: %s\n",argv[1]);
return 1;
}
dev_del_partitions(dev);
offset = 0;
while (1) {
part = xzalloc(sizeof(struct partition));
part->offset = offset;
part->physdev = dev;
part->num = num;
part->device.map_base = dev->map_base + offset;
if(mtd_part_do_parse_one(part, endp, &endp)) {
dev_del_partitions(dev);
free(part);
return 1;
}
offset += part->device.size;
part->device.type_data = part;
sprintf(part->device.id, "%s.%d", dev->id, num);
register_device(&part->device);
num++;
if(!*endp)
break;
if(*endp != ',') {
printf("parse error\n");
return 1;
}
endp++;
}
return 0;
}
int do_delpart ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
struct device_d *dev;
if (argc != 2) {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
dev = device_from_spec_str(argv[1], NULL);
if (!dev) {
printf("no such device: %s\n",argv[1]);
return 1;
}
dev_del_partitions(dev);
return 0;
}
U_BOOT_CMD_START(addpart)
.maxargs = 2,
.cmd = do_addpart,
.usage = "addpart - add a partition table to a device\n",
U_BOOT_CMD_END
U_BOOT_CMD_START(delpart)
.maxargs = 2,
.cmd = do_delpart,
.usage = "delpart - delete a partition table from a device\n",
U_BOOT_CMD_END
static int part_probe(struct device_d *dev)
{
struct partition *part = dev->type_data;
printf("registering partition %s on device %s (size=0x%08x, name=%s)\n",
dev->id, part->physdev->id, dev->size, part->name);
return 0;
}
static int part_erase(struct device_d *dev, size_t count, unsigned long offset)
{
struct partition *part = dev->type_data;
if (part->physdev->driver->erase)
return part->physdev->driver->erase(part->physdev, count, offset + part->offset);
return -1;
}
static ssize_t part_read(struct device_d *dev, void *buf, size_t count, unsigned long offset, ulong flags)
{
struct partition *part = dev->type_data;
return dev_read(part->physdev, buf, count, offset + part->offset, flags);
}
static ssize_t part_write(struct device_d *dev, const void *buf, size_t count, unsigned long offset, ulong flags)
{
struct partition *part = dev->type_data;
return dev_write(part->physdev, buf, count, offset + part->offset, flags);
}
struct driver_d part_driver = {
.name = "partition",
.probe = part_probe,
.read = part_read,
.write = part_write,
.erase = part_erase,
};
static int partition_init(void)
{
return register_driver(&part_driver);
}
device_initcall(partition_init);
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