352 lines
9.7 KiB
C
352 lines
9.7 KiB
C
/***************************************************************************
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* Copyright (C) 2007 by Pavel Chromy *
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* chromy@asix.cz *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "imp.h"
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#include "ocl.h"
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#include <target/embeddedice.h>
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struct ocl_priv {
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struct arm_jtag *jtag_info;
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unsigned int buflen;
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unsigned int bufalign;
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};
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static int ocl_erase_check(struct flash_bank *bank)
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{
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return ERROR_OK;
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}
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static int ocl_protect_check(struct flash_bank *bank)
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{
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return ERROR_OK;
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}
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/* flash_bank ocl 0 0 0 0 <target#> */
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FLASH_BANK_COMMAND_HANDLER(ocl_flash_bank_command)
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{
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struct arm7_9_common *arm7_9;
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struct ocl_priv *ocl;
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if (CMD_ARGC < 6)
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return ERROR_COMMAND_SYNTAX_ERROR;
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arm7_9 = target_to_arm7_9(bank->target);
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if (!is_arm7_9(arm7_9))
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return ERROR_TARGET_INVALID;
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ocl = bank->driver_priv = malloc(sizeof(struct ocl_priv));
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ocl->jtag_info = &arm7_9->jtag_info;
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ocl->buflen = 0;
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ocl->bufalign = 1;
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return ERROR_OK;
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}
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static int ocl_erase(struct flash_bank *bank, int first, int last)
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{
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struct ocl_priv *ocl = bank->driver_priv;
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int retval;
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uint32_t dcc_buffer[3];
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/* check preconditions */
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if (bank->num_sectors == 0)
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return ERROR_FLASH_BANK_NOT_PROBED;
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if (bank->target->state != TARGET_RUNNING) {
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LOG_ERROR("target has to be running to communicate with the loader");
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return ERROR_TARGET_NOT_RUNNING;
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}
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if ((first == 0) && (last == bank->num_sectors - 1)) {
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dcc_buffer[0] = OCL_ERASE_ALL;
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retval = embeddedice_send(ocl->jtag_info, dcc_buffer, 1);
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if (retval != ERROR_OK)
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return retval;
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} else {
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dcc_buffer[0] = OCL_ERASE_BLOCK;
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dcc_buffer[1] = first;
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dcc_buffer[2] = last;
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retval = embeddedice_send(ocl->jtag_info, dcc_buffer, 3);
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if (retval != ERROR_OK)
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return retval;
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}
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/* wait for response, fixed timeout of 1 s */
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retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 1000);
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if (retval != ERROR_OK)
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return retval;
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/* receive response */
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retval = embeddedice_receive(ocl->jtag_info, dcc_buffer + 1, 1);
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if (retval != ERROR_OK)
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return retval;
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if (dcc_buffer[1] != OCL_CMD_DONE) {
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if (dcc_buffer[0] == OCL_ERASE_ALL)
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LOG_ERROR("loader response to OCL_ERASE_ALL 0x%08" PRIx32 "", dcc_buffer[1]);
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else
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LOG_ERROR("loader response to OCL_ERASE_BLOCK 0x%08" PRIx32 "", dcc_buffer[1]);
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return ERROR_FLASH_OPERATION_FAILED;
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}
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return ERROR_OK;
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}
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static int ocl_protect(struct flash_bank *bank, int set, int first, int last)
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{
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return ERROR_OK;
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}
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static int ocl_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
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{
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struct ocl_priv *ocl = bank->driver_priv;
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int retval;
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uint32_t *dcc_buffer;
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uint32_t *dcc_bufptr;
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int byteofs;
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int runlen;
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uint32_t chksum;
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int i;
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/* check preconditions */
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if (ocl->buflen == 0 || ocl->bufalign == 0)
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return ERROR_FLASH_BANK_NOT_PROBED;
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if (bank->target->state != TARGET_RUNNING) {
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LOG_ERROR("target has to be running to communicate with the loader");
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return ERROR_TARGET_NOT_RUNNING;
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}
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/* allocate buffer for max. ocl buffer + overhead */
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dcc_buffer = malloc(sizeof(uint32_t)*(ocl->buflen/4 + 3));
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while (count) {
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if (count + (offset % ocl->bufalign) > ocl->buflen)
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runlen = ocl->buflen - (offset % ocl->bufalign);
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else
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runlen = count;
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dcc_buffer[0] = OCL_FLASH_BLOCK | runlen;
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dcc_buffer[1] = offset;
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dcc_bufptr = &dcc_buffer[2];
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*dcc_bufptr = 0xffffffff;
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byteofs = (offset % ocl->bufalign) % 4;
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chksum = OCL_CHKS_INIT;
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/* copy data to DCC buffer in proper byte order and properly aligned */
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for (i = 0; i < runlen; i++) {
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switch (byteofs++) {
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case 0:
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*dcc_bufptr &= *(buffer++) | 0xffffff00;
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break;
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case 1:
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*dcc_bufptr &= ((*(buffer++)) << 8) | 0xffff00ff;
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break;
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case 2:
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*dcc_bufptr &= ((*(buffer++)) << 16) | 0xff00ffff;
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break;
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case 3:
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*dcc_bufptr &= ((*(buffer++)) << 24) | 0x00ffffff;
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chksum ^= *(dcc_bufptr++);
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*dcc_bufptr = 0xffffffff;
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byteofs = 0;
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break;
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}
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}
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/* add the remaining word to checksum */
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if (byteofs)
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chksum ^= *(dcc_bufptr++);
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*(dcc_bufptr++) = chksum;
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/* send the data */
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retval = embeddedice_send(ocl->jtag_info, dcc_buffer, dcc_bufptr-dcc_buffer);
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if (retval != ERROR_OK) {
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free(dcc_buffer);
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return retval;
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}
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/* wait for response, fixed timeout of 1 s */
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retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 1000);
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if (retval != ERROR_OK) {
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free(dcc_buffer);
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return retval;
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}
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/* receive response */
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retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1);
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if (retval != ERROR_OK) {
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free(dcc_buffer);
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return retval;
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}
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if (dcc_buffer[0] != OCL_CMD_DONE) {
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LOG_ERROR("loader response to OCL_FLASH_BLOCK 0x%08" PRIx32 "", dcc_buffer[0]);
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free(dcc_buffer);
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return ERROR_FLASH_OPERATION_FAILED;
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}
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count -= runlen;
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offset += runlen;
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}
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free(dcc_buffer);
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return ERROR_OK;
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}
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static int ocl_probe(struct flash_bank *bank)
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{
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struct ocl_priv *ocl = bank->driver_priv;
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int retval;
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uint32_t dcc_buffer[1];
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int sectsize;
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int i;
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/* purge pending data in DCC */
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embeddedice_receive(ocl->jtag_info, dcc_buffer, 1);
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dcc_buffer[0] = OCL_PROBE;
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retval = embeddedice_send(ocl->jtag_info, dcc_buffer, 1);
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if (retval != ERROR_OK)
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return retval;
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/* wait for response, fixed timeout of 1 s */
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retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 1000);
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if (retval != ERROR_OK)
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return retval;
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/* receive response */
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retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1);
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if (retval != ERROR_OK)
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return retval;
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if (dcc_buffer[0] != OCL_CMD_DONE) {
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LOG_ERROR("loader response to OCL_PROBE 0x%08" PRIx32 "", dcc_buffer[0]);
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return ERROR_FLASH_OPERATION_FAILED;
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}
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/* receive and fill in parameters, detection of loader is important, receive it one by one */
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retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 0);
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if (retval != ERROR_OK)
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return retval;
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retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1);
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if (retval != ERROR_OK)
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return retval;
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bank->base = dcc_buffer[0];
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retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 0);
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if (retval != ERROR_OK)
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return retval;
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retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1);
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if (retval != ERROR_OK)
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return retval;
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bank->size = dcc_buffer[0];
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retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 0);
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if (retval != ERROR_OK)
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return retval;
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retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1);
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if (retval != ERROR_OK)
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return retval;
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bank->num_sectors = dcc_buffer[0];
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retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 0);
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if (retval != ERROR_OK)
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return retval;
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retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1);
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if (retval != ERROR_OK)
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return retval;
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ocl->buflen = dcc_buffer[0] & 0xffff;
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ocl->bufalign = dcc_buffer[0] >> 16;
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bank->sectors = realloc(bank->sectors, sizeof(struct flash_sector)*bank->num_sectors);
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if (bank->num_sectors == 0) {
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LOG_ERROR("number of sectors shall be non zero value");
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return ERROR_FLASH_BANK_INVALID;
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}
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if (bank->size % bank->num_sectors) {
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LOG_ERROR("bank size not divisible by number of sectors");
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return ERROR_FLASH_BANK_INVALID;
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}
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sectsize = bank->size / bank->num_sectors;
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for (i = 0; i < bank->num_sectors; i++) {
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bank->sectors[i].offset = i * sectsize;
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bank->sectors[i].size = sectsize;
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bank->sectors[i].is_erased = -1;
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bank->sectors[i].is_protected = -1;
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}
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if (ocl->bufalign == 0)
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ocl->bufalign = 1;
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if (ocl->buflen == 0) {
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LOG_ERROR("buflen shall be non zero value");
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return ERROR_FLASH_BANK_INVALID;
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}
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if ((ocl->bufalign > ocl->buflen) || (ocl->buflen % ocl->bufalign)) {
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LOG_ERROR("buflen is not multiple of bufalign");
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return ERROR_FLASH_BANK_INVALID;
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}
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if (ocl->buflen % 4) {
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LOG_ERROR("buflen shall be divisible by 4");
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return ERROR_FLASH_BANK_INVALID;
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}
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return ERROR_OK;
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}
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static int ocl_info(struct flash_bank *bank, char *buf, int buf_size)
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{
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return ERROR_OK;
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}
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static int ocl_auto_probe(struct flash_bank *bank)
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{
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struct ocl_priv *ocl = bank->driver_priv;
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if (ocl->buflen == 0 || ocl->bufalign == 0)
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return ERROR_FLASH_BANK_NOT_PROBED;
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return ERROR_OK;
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}
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struct flash_driver ocl_flash = {
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.name = "ocl",
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.flash_bank_command = ocl_flash_bank_command,
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.erase = ocl_erase,
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.protect = ocl_protect,
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.write = ocl_write,
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.read = default_flash_read,
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.probe = ocl_probe,
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.erase_check = ocl_erase_check,
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.protect_check = ocl_protect_check,
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.info = ocl_info,
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.auto_probe = ocl_auto_probe,
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};
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