- reverted some of the changes that possibly broke arm926ejs. Waiting

[openocd.git] / src / flash / ecos.c

/***************************************************************************
 *   Copyright (C) 2008 Øyvind Harboe                                      *
 *   oyvind.harboe@zylin.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; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   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.             *
 ***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <string.h>

#include "replacements.h"


#include "flash.h"

#include "target.h"

#include "flash.h"
#include "target.h"
#include "log.h"
#include "binarybuffer.h"
#include "../target/embeddedice.h"
#include "types.h"



int ecosflash_register_commands(struct command_context_s *cmd_ctx);
int ecosflash_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
int ecosflash_erase(struct flash_bank_s *bank, int first, int last);
int ecosflash_protect(struct flash_bank_s *bank, int set, int first, int last);
int ecosflash_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
int ecosflash_probe(struct flash_bank_s *bank);
int ecosflash_protect_check(struct flash_bank_s *bank);
int ecosflash_info(struct flash_bank_s *bank, char *buf, int buf_size);

u32 ecosflash_get_flash_status(flash_bank_t *bank);
void ecosflash_set_flash_mode(flash_bank_t *bank,int mode);
u32 ecosflash_wait_status_busy(flash_bank_t *bank, u32 waitbits, int timeout);
int ecosflash_handle_gpnvm_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);

flash_driver_t ecosflash_flash =
{
        .name = "ecosflash",
        .register_commands = ecosflash_register_commands,
        .flash_bank_command = ecosflash_flash_bank_command,
        .erase = ecosflash_erase,
        .protect = ecosflash_protect,
        .write = ecosflash_write,
        .probe = ecosflash_probe,
        .auto_probe = ecosflash_probe,
        .erase_check = default_flash_blank_check,
        .protect_check = ecosflash_protect_check,
        .info = ecosflash_info
};

typedef struct ecosflash_flash_bank_s
{
        struct target_s *target;
        working_area_t *write_algorithm;
        working_area_t *erase_check_algorithm;
        char *driverPath;
        u32 start_address;
} ecosflash_flash_bank_t;

static const int sectorSize=0x10000;

char *
flash_errmsg(int err);

#ifndef __ECOS
#define FLASH_ERR_OK              0x00  /* No error - operation complete */
#define FLASH_ERR_INVALID         0x01  /* Invalid FLASH address */
#define FLASH_ERR_ERASE           0x02  /* Error trying to erase */
#define FLASH_ERR_LOCK            0x03  /* Error trying to lock/unlock */
#define FLASH_ERR_PROGRAM         0x04  /* Error trying to program */
#define FLASH_ERR_PROTOCOL        0x05  /* Generic error */
#define FLASH_ERR_PROTECT         0x06  /* Device/region is write-protected */
#define FLASH_ERR_NOT_INIT        0x07  /* FLASH info not yet initialized */
#define FLASH_ERR_HWR             0x08  /* Hardware (configuration?) problem */
#define FLASH_ERR_ERASE_SUSPEND   0x09  /* Device is in erase suspend mode */
#define FLASH_ERR_PROGRAM_SUSPEND 0x0a  /* Device is in in program suspend mode */
#define FLASH_ERR_DRV_VERIFY      0x0b  /* Driver failed to verify data */
#define FLASH_ERR_DRV_TIMEOUT     0x0c  /* Driver timed out waiting for device */
#define FLASH_ERR_DRV_WRONG_PART  0x0d  /* Driver does not support device */
#define FLASH_ERR_LOW_VOLTAGE     0x0e  /* Not enough juice to complete job */


char *
flash_errmsg(int err)
{
    switch (err) {
    case FLASH_ERR_OK:
        return "No error - operation complete";
    case FLASH_ERR_ERASE_SUSPEND:
        return "Device is in erase suspend state";
    case FLASH_ERR_PROGRAM_SUSPEND:
        return "Device is in program suspend state";
    case FLASH_ERR_INVALID:
        return "Invalid FLASH address";
    case FLASH_ERR_ERASE:
        return "Error trying to erase";
    case FLASH_ERR_LOCK:
        return "Error trying to lock/unlock";
    case FLASH_ERR_PROGRAM:
        return "Error trying to program";
    case FLASH_ERR_PROTOCOL:
        return "Generic error";
    case FLASH_ERR_PROTECT:
        return "Device/region is write-protected";
    case FLASH_ERR_NOT_INIT:
        return "FLASH sub-system not initialized";
    case FLASH_ERR_DRV_VERIFY:
        return "Data verify failed after operation";
    case FLASH_ERR_DRV_TIMEOUT:
        return "Driver timed out waiting for device";
    case FLASH_ERR_DRV_WRONG_PART:
        return "Driver does not support device";
    case FLASH_ERR_LOW_VOLTAGE:
        return "Device reports low voltage";
    default:
        return "Unknown error";
    }
}
#endif

/* flash bank ecosflash <base> <size> <chip_width> <bus_width> <target#> <driverPath>
 */
int ecosflash_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
{
        ecosflash_flash_bank_t *info;
        
        if (argc < 7)
        {
                LOG_WARNING("incomplete flash_bank ecosflash configuration");
                return ERROR_FLASH_BANK_INVALID;
        }
        
        info = malloc(sizeof(ecosflash_flash_bank_t));
        if(info == NULL)
        {
                LOG_ERROR("no memory for flash bank info");
                exit(-1);
        }
        bank->driver_priv = info;
        info->driverPath=strdup(args[6]);

        /* eCos flash sector sizes are not exposed to OpenOCD, use 0x10000 as 
         * a way to improve impeadance matach between OpenOCD and eCos flash
         * driver.
         */
        int i = 0;
        u32 offset = 0;
        bank->num_sectors=bank->size/sectorSize;
        bank->sectors = malloc(sizeof(flash_sector_t) * bank->num_sectors);
        for (i = 0; i < bank->num_sectors; i++)
        {
                bank->sectors[i].offset = offset;
                bank->sectors[i].size = sectorSize;
                offset += bank->sectors[i].size;
                bank->sectors[i].is_erased = -1;
                bank->sectors[i].is_protected = 0;
        }
        
        info->target = get_target_by_num(strtoul(args[5], NULL, 0));
        if (info->target == NULL)
        {
                LOG_ERROR("no target '%i' configured", (int)strtoul(args[5], NULL, 0));
                exit(-1);
        }
        return ERROR_OK;
}


int loadDriver(ecosflash_flash_bank_t *info)
{
        u32 buf_cnt;
        u32 image_size;
        image_t image;  
        
        image.base_address_set = 0;
        image.start_address_set = 0;
        target_t *target=info->target;
        
        if (image_open(&image, info->driverPath, NULL) != ERROR_OK)
        {
                return ERROR_FLASH_BANK_INVALID;
        }
        
        info->start_address=image.start_address;
        
        image_size = 0x0;
        int i;
        for (i = 0; i < image.num_sections; i++)
        {
                void *buffer = malloc(image.sections[i].size);
                int retval;
                if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
                {
                        free(buffer);
                        image_close(&image);
                        return retval;
                }
                target_write_buffer(target, image.sections[i].base_address, buf_cnt, buffer);
                image_size += buf_cnt;
                LOG_DEBUG("%u byte written at address 0x%8.8x", buf_cnt, image.sections[i].base_address);
                
                free(buffer);
        }

        image_close(&image);

        return ERROR_OK;
}


static int const OFFSET_ERASE=0x0;
static int const OFFSET_ERASE_SIZE=0x8;
static int const OFFSET_FLASH=0xc;
static int const OFFSET_FLASH_SIZE=0x8;
static int const OFFSET_GET_WORKAREA=0x18;
static int const OFFSET_GET_WORKAREA_SIZE=0x4;


int runCode(ecosflash_flash_bank_t *info, 
                u32 codeStart, u32 codeStop, u32 r0, u32 r1, u32 r2, 
                u32 *result,
                /* timeout in ms */
                int timeout)
{
        target_t *target=info->target;

        reg_param_t reg_params[3];
        armv4_5_algorithm_t armv4_5_info;
        armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
        armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
        armv4_5_info.core_state = ARMV4_5_STATE_ARM;
        
        init_reg_param(&reg_params[0], "r0", 32, PARAM_IN_OUT);
        init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
        init_reg_param(&reg_params[2], "r2", 32, PARAM_OUT);
        
        buf_set_u32(reg_params[0].value, 0, 32, r0);
        buf_set_u32(reg_params[1].value, 0, 32, r1);
        buf_set_u32(reg_params[2].value, 0, 32, r2);
        
        int retval;
        if ((retval = target->type->run_algorithm(target, 0, NULL, 3, reg_params,
                        codeStart,
                        codeStop, timeout, 
                        &armv4_5_info)) != ERROR_OK)
        {
                LOG_ERROR("error executing eCos flash algorithm");
                return retval;
        }
        
        *result=buf_get_u32(reg_params[0].value, 0, 32);
        
        destroy_reg_param(&reg_params[0]);
        destroy_reg_param(&reg_params[1]);
        destroy_reg_param(&reg_params[2]);
        
        return ERROR_OK;
}

int eCosBoard_erase(ecosflash_flash_bank_t *info, u32 address, u32 len)
{
        int retval;
        int timeout = (len / 20480 + 1) * 1000; /*asume 20 KB/s*/ 

        retval=loadDriver(info);
        if (retval!=ERROR_OK)
                return retval;
        
        u32 flashErr;
        retval=runCode(info, 
                        info->start_address+OFFSET_ERASE,
                        info->start_address+OFFSET_ERASE+OFFSET_ERASE_SIZE,
                        address,
                        len,
                        0,
                        &flashErr,
                        timeout
                        );
        if (retval!=ERROR_OK)
                return retval;
        
        if (flashErr != 0x0)
        {
                LOG_ERROR("Flash erase failed with %d (%s)\n", flashErr, flash_errmsg(flashErr));
                return ERROR_FAIL;
        }

        return ERROR_OK;
}

int eCosBoard_flash(ecosflash_flash_bank_t *info, void *data, u32 address, u32 len)
{
        target_t *target=info->target;
        const int chunk=8192;
        int retval=ERROR_OK;
        int timeout = (chunk / 20480 + 1) * 1000; /*asume 20 KB/s + 1 second*/
        
        retval=loadDriver(info);
        if (retval!=ERROR_OK)
                return retval;
        
        u32 buffer;
        retval=runCode(info, 
                        info->start_address+OFFSET_GET_WORKAREA,
                        info->start_address+OFFSET_GET_WORKAREA+OFFSET_GET_WORKAREA_SIZE,
                        0,
                        0,
                        0,
                        &buffer,
                        1000);
        if (retval!=ERROR_OK)
                return retval;
        
        
        int i;
    for (i=0; i<len; i+=chunk)
    {
                int t=len-i;
                if (t>chunk)
                {
                        t=chunk;
                }
                
                int retval;
        retval=target_write_buffer(target, buffer, t, ((u8 *)data)+i);
        if (retval != ERROR_OK)
                return retval;
        
        u32 flashErr;
        retval=runCode(info, 
                        info->start_address+OFFSET_FLASH,
                        info->start_address+OFFSET_FLASH+OFFSET_FLASH_SIZE,
                        buffer,
                        address+i,
                        t,
                        &flashErr,
                        timeout);
        if (retval != ERROR_OK)
                return retval;

                if (flashErr != 0x0)
                {
                        LOG_ERROR("Flash prog failed with %d (%s)\n", flashErr, flash_errmsg(flashErr));
                        return ERROR_FAIL;
                }
    }
        return ERROR_OK;
}


int ecosflash_probe(struct flash_bank_s *bank)
{
        return ERROR_OK;
}


int ecosflash_register_commands(struct command_context_s *cmd_ctx)
{
        register_command(cmd_ctx, NULL, "ecosflash", NULL, COMMAND_ANY, NULL);
        
        return ERROR_OK;
}

/*
static void command(flash_bank_t *bank, u8 cmd, u8 *cmd_buf)
{
        ecosflash_flash_bank_t *info = bank->driver_priv;
        int i;
        
        if (info->target->endianness == TARGET_LITTLE_ENDIAN)
        {
                for (i = bank->bus_width; i > 0; i--)
                {
                        *cmd_buf++ = (i & (bank->chip_width - 1)) ? 0x0 : cmd;
                }
        }
        else
        {
                for (i = 1; i <= bank->bus_width; i++)
                {
                        *cmd_buf++ = (i & (bank->chip_width - 1)) ? 0x0 : cmd;
                }
        }
}
*/

u32 ecosflash_address(struct flash_bank_s *bank, u32 address)
{
        u32 retval = 0;
        switch(bank->bus_width)
        {
                case 4:
                        retval = address & 0xfffffffc;
                case 2:
                        retval = address & 0xfffffffe;
                case 1:
                        retval = address;
        }
        
        return retval + bank->base;
} 


int ecosflash_erase(struct flash_bank_s *bank, int first, int last)
{
        struct flash_bank_s *c=bank;
        ecosflash_flash_bank_t *info = bank->driver_priv;
        return eCosBoard_erase(info, c->base+first*sectorSize, sectorSize*(last-first+1)); 
}

int ecosflash_protect(struct flash_bank_s *bank, int set, int first, int last)
{
        return ERROR_OK;
}


int ecosflash_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
{
        ecosflash_flash_bank_t *info = bank->driver_priv;
        struct flash_bank_s *c=bank;
        return eCosBoard_flash(info, buffer, c->base+offset, count);
}


int ecosflash_protect_check(struct flash_bank_s *bank)
{
        return ERROR_OK;
}

int ecosflash_info(struct flash_bank_s *bank, char *buf, int buf_size)
{
        ecosflash_flash_bank_t *info = bank->driver_priv;
        snprintf(buf, buf_size, "eCos flash driver: %s", info->driverPath);
        return ERROR_OK;
}


u32 ecosflash_get_flash_status(flash_bank_t *bank)
{
        return ERROR_OK;
}

void ecosflash_set_flash_mode(flash_bank_t *bank,int mode)
{
        
}

u32 ecosflash_wait_status_busy(flash_bank_t *bank, u32 waitbits, int timeout)
{
        return ERROR_OK;
}

int ecosflash_handle_gpnvm_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
        return ERROR_OK;
}