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/*
* Copyright © 2011 Keith Packard <keithp@keithp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <ao.h>
#include <ao_storage.h>
uint8_t
ao_storage_read(ao_pos_t pos, __xdata void *buf, uint16_t len) __reentrant
{
uint16_t this_len;
uint16_t this_off;
ao_storage_setup();
if (pos >= ao_storage_total || pos + len > ao_storage_total)
return 0;
while (len) {
/* Compute portion of transfer within
* a single block
*/
this_off = (uint16_t) pos & (ao_storage_unit - 1);
this_len = ao_storage_unit - this_off;
if (this_len > len)
this_len = len;
if (!ao_storage_device_read(pos, buf, this_len))
return 0;
/* See how much is left */
buf += this_len;
len -= this_len;
pos += this_len;
}
return 1;
}
uint8_t
ao_storage_write(ao_pos_t pos, __xdata void *buf, uint16_t len) __reentrant
{
uint16_t this_len;
uint16_t this_off;
ao_storage_setup();
if (pos >= ao_storage_total || pos + len > ao_storage_total)
return 0;
while (len) {
/* Compute portion of transfer within
* a single block
*/
this_off = (uint16_t) pos & (ao_storage_unit - 1);
this_len = ao_storage_unit - this_off;
if (this_len > len)
this_len = len;
if (!ao_storage_device_write(pos, buf, this_len))
return 0;
/* See how much is left */
buf += this_len;
len -= this_len;
pos += this_len;
}
return 1;
}
static __xdata uint8_t storage_data[8];
static void
ao_storage_dump(void) __reentrant
{
uint8_t i, j;
ao_cmd_hex();
if (ao_cmd_status != ao_cmd_success)
return;
for (i = 0; ; i += 8) {
if (ao_storage_read(((uint32_t) (ao_cmd_lex_i) << 8) + i,
storage_data,
8)) {
ao_cmd_put16((uint16_t) i);
for (j = 0; j < 8; j++) {
putchar(' ');
ao_cmd_put8(storage_data[j]);
}
putchar ('\n');
}
if (i == 248)
break;
}
}
#if HAS_STORAGE_DEBUG
/* not enough space for this today
*/
static void
ao_storage_store(void) __reentrant
{
uint16_t block;
uint8_t i;
uint16_t len;
static __xdata uint8_t b;
uint32_t addr;
ao_cmd_hex();
block = ao_cmd_lex_i;
ao_cmd_hex();
i = ao_cmd_lex_i;
addr = ((uint32_t) block << 8) | i;
ao_cmd_hex();
len = ao_cmd_lex_i;
if (ao_cmd_status != ao_cmd_success)
return;
while (len--) {
ao_cmd_hex();
if (ao_cmd_status != ao_cmd_success)
return;
b = ao_cmd_lex_i;
ao_storage_write(addr, &b, 1);
addr++;
}
}
#endif
void
ao_storage_zap(void) __reentrant
{
ao_cmd_hex();
if (ao_cmd_status != ao_cmd_success)
return;
ao_storage_erase((uint32_t) ao_cmd_lex_i << 8);
}
void
ao_storage_zapall(void) __reentrant
{
uint32_t pos;
ao_cmd_white();
if (!ao_match_word("DoIt"))
return;
for (pos = 0; pos < ao_storage_log_max; pos += ao_storage_block)
ao_storage_erase(pos);
}
void
ao_storage_info(void) __reentrant
{
ao_storage_setup();
printf("Storage size: %ld\n", (long) ao_storage_total);
printf("Storage erase unit: %ld\n", (long) ao_storage_block);
ao_storage_device_info();
}
__code struct ao_cmds ao_storage_cmds[] = {
{ ao_storage_info, "f\0Show storage" },
{ ao_storage_dump, "e <block>\0Dump flash" },
#if HAS_STORAGE_DEBUG
{ ao_storage_store, "w <block> <start> <len> <data> ...\0Write data to flash" },
#endif
{ ao_storage_zap, "z <block>\0Erase <block>" },
{ ao_storage_zapall,"Z <key>\0Erase all. <key> is doit with D&I" },
{ 0, NULL },
};
void
ao_storage_init(void)
{
ao_storage_device_init();
ao_cmd_register(&ao_storage_cmds[0]);
}
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