403 lines
11 KiB
C
403 lines
11 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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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 "replacements.h"
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#include "ocl.h"
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#include "flash.h"
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#include "target.h"
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#include "log.h"
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#include "binarybuffer.h"
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#include "types.h"
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#include "embeddedice.h"
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#include "arm7_9_common.h"
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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int ocl_register_commands(struct command_context_s *cmd_ctx);
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int ocl_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
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int ocl_erase(struct flash_bank_s *bank, int first, int last);
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int ocl_protect(struct flash_bank_s *bank, int set, int first, int last);
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int ocl_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
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int ocl_probe(struct flash_bank_s *bank);
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int ocl_erase_check(struct flash_bank_s *bank);
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int ocl_protect_check(struct flash_bank_s *bank);
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int ocl_info(struct flash_bank_s *bank, char *buf, int buf_size);
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int ocl_auto_probe(struct flash_bank_s *bank);
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flash_driver_t ocl_flash =
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{
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.name = "ocl",
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.register_commands = ocl_register_commands,
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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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.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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typedef struct ocl_priv_s
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{
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arm_jtag_t *jtag_info;
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int buflen;
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int bufalign;
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} ocl_priv_t;
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int ocl_register_commands(struct command_context_s *cmd_ctx)
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{
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return ERROR_OK;
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}
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int ocl_erase_check(struct flash_bank_s *bank)
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{
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return ERROR_OK;
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}
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int ocl_protect_check(struct flash_bank_s *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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int ocl_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
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{
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int retval;
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armv4_5_common_t *armv4_5;
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arm7_9_common_t *arm7_9;
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ocl_priv_t *ocl;
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if (argc < 6)
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{
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LOG_WARNING("incomplete flash_bank ocl configuration");
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return ERROR_FLASH_BANK_INVALID;
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}
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if ((retval = arm7_9_get_arch_pointers(bank->target, &armv4_5, &arm7_9)) != ERROR_OK)
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return retval;
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ocl = bank->driver_priv = malloc(sizeof(ocl_priv_t));
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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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int ocl_erase(struct flash_bank_s *bank, int first, int last)
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{
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ocl_priv_t *ocl = bank->driver_priv;
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int retval;
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u32 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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{
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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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{
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dcc_buffer[0] = OCL_ERASE_ALL;
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if ((retval = embeddedice_send(ocl->jtag_info, dcc_buffer, 1) != ERROR_OK))
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return retval;
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}
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else
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{
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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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if ((retval = embeddedice_send(ocl->jtag_info, dcc_buffer, 3) != 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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if ((retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 1000) != ERROR_OK))
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{
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if (retval == ERROR_TARGET_TIMEOUT)
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LOG_ERROR("loader not responding");
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return retval;
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}
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/* receive response */
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if ((retval = embeddedice_receive(ocl->jtag_info, dcc_buffer+1, 1) != ERROR_OK))
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return retval;
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if (dcc_buffer[1] != OCL_CMD_DONE)
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{
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if (dcc_buffer[0] == OCL_ERASE_ALL)
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LOG_ERROR("loader response to OCL_ERASE_ALL 0x%08lX", dcc_buffer[1]);
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else
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LOG_ERROR("loader response to OCL_ERASE_BLOCK 0x%08lX", 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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int ocl_protect(struct flash_bank_s *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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int ocl_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
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{
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ocl_priv_t *ocl = bank->driver_priv;
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int retval;
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u32 *dcc_buffer;
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u32 *dcc_bufptr;
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int byteofs;
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int runlen;
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u32 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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{
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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(u32)*(ocl->buflen/4+3));
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while (count)
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{
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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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{
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switch (byteofs++)
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{
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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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if ((retval = embeddedice_send(ocl->jtag_info, dcc_buffer, dcc_bufptr-dcc_buffer)) != ERROR_OK)
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{
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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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if ((retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 1000) != ERROR_OK))
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{
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if (retval == ERROR_TARGET_TIMEOUT)
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LOG_ERROR("loader not responding");
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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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if ((retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1) != ERROR_OK))
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{
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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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{
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LOG_ERROR("loader response to OCL_FLASH_BLOCK 0x%08lX", 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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int ocl_probe(struct flash_bank_s *bank)
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{
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ocl_priv_t *ocl = bank->driver_priv;
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int retval;
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u32 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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if ((retval = embeddedice_send(ocl->jtag_info, dcc_buffer, 1) != ERROR_OK))
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return retval;
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/* wait for response, fixed timeout of 1 s */
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if ((retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 1000) != ERROR_OK))
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{
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if (retval == ERROR_TARGET_TIMEOUT)
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LOG_ERROR("loader not responding");
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return retval;
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}
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/* receive response */
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if ((retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1) != ERROR_OK))
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return retval;
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if (dcc_buffer[0] != OCL_CMD_DONE)
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{
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LOG_ERROR("loader response to OCL_PROBE 0x%08lX", 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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if ((retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 0) != ERROR_OK)
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|| (retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1) != ERROR_OK))
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return retval;
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bank->base = dcc_buffer[0];
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if ((retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 0) != ERROR_OK)
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|| (retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1) != ERROR_OK))
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return retval;
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bank->size = dcc_buffer[0];
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if ((retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 0) != ERROR_OK)
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|| (retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1) != ERROR_OK))
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return retval;
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bank->num_sectors = dcc_buffer[0];
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if ((retval = embeddedice_handshake(ocl->jtag_info, EICE_COMM_CTRL_WBIT, 0) != ERROR_OK)
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|| (retval = embeddedice_receive(ocl->jtag_info, dcc_buffer, 1) != 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(flash_sector_t)*bank->num_sectors);
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if (bank->num_sectors == 0)
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{
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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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{
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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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{
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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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{
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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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{
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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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int ocl_info(struct flash_bank_s *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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int ocl_auto_probe(struct flash_bank_s *bank)
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{
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ocl_priv_t *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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