boot.c

周立功MAGICARM2200--ZLG_BOOT

/****************************************Copyright (c)**************************************************
**                               Guangzou ZLG-MCU Development Co.,LTD.
**                                      graduate school
**                                 http://www.zlgmcu.com
**
**--------------File Info-------------------------------------------------------------------------------
** File name:			boot.c
** Last modified Date:  2005-02-24
** Last Version:		1.0
** Descriptions:		zlg/boot v1.0
**
**------------------------------------------------------------------------------------------------------
** Created by:			Chenmingji
** Created date:		2005-02-24
** Version:				1.0
** Descriptions:		The original version
**
**------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
** Version:
** Descriptions:
**
********************************************************************************************************/
#define IN_BOOT
#include "config.h"
static uint8 Cmdload(char *Parameter, uint8 PLen);
static uint8 CmdSet(char *Parameter, uint8 PLen);
static uint8 CmdRun(char *Parameter, uint8 PLen);
static uint8 CmdSfr(char *Parameter, uint8 PLen);
static uint8 CmdSfrh(char *Parameter, uint8 PLen);
static uint8 CmdSfrb(char *Parameter, uint8 PLen);

#define REG_CPSR      0

#define USR_R13       1
#define USR_R14       2

#define UND_R13       3
#define UND_R14       4

#define SVC_R13       5
#define SVC_R14       6

#define IRQ_R13       7
#define IRQ_R14       8

#define FIQ_R8        9
#define FIQ_R9        10
#define FIQ_R10       11
#define FIQ_R11       12
#define FIQ_R12       13
#define FIQ_R13       14
#define FIQ_R14       15

#define USR_R0        16
#define USR_R1        17
#define USR_R2        18
#define USR_R3        19
#define USR_R4        20
#define USR_R5        21
#define USR_R6        22
#define USR_R7        23
#define USR_R8        24
#define USR_R9        25
#define USR_R10       26
#define USR_R11       27
#define USR_R12       28
#define ABT_R13       29
#define ABT_R14       30
#define PC_REG        31

uint32 Regs[32];

typedef struct 
{
    char *RegName;
    uint8 Index;
}_REG;

const static _REG RegTable[] = 
{
            {"CPSR",  REG_CPSR},
            {"R0",  USR_R0},
            {"R1",  USR_R1},
            {"R2",  USR_R2},
            {"R3",  USR_R3},
            {"R4",  USR_R4},
            {"R5",  USR_R5},
            {"R6",  USR_R6},
            {"R7",  USR_R7},
            {"R8",  USR_R8},
            {"R9",  USR_R9},
            {"R10",  USR_R10},
            {"R11",  USR_R11},
            {"R12",  USR_R12},
            {"R13",  USR_R13},
            {"R14",  USR_R14},
            {"R15",  PC_REG},
            {"SP",  USR_R13},
            {"LR",  USR_R14},
            {"PC",  PC_REG},

            {"R13_UND",  UND_R13},
            {"R14_UND",  UND_R14},
            {"SP_UND",  UND_R13},
            {"LR_UND",  UND_R14},

            {"R13_SVC",  SVC_R13},
            {"R14_SVC",  SVC_R14},
            {"SP_SVC",  SVC_R13},
            {"LR_SVC",  SVC_R14},

            {"R13_IRQ",  IRQ_R13},
            {"R14_IRQ",  IRQ_R14},
            {"SP_IRQ",  IRQ_R13},
            {"LR_IRQ",  IRQ_R14},

            {"R13_ABT",  ABT_R13},
            {"R14_ABT",  ABT_R14},
            {"SP_ABT",  ABT_R13},
            {"LR_ABT",  ABT_R14},

            {"R8_FIQ",  FIQ_R8},
            {"R9_FIQ",  FIQ_R9},
            {"R10_FIQ",  FIQ_R10},
            {"R11_FIQ",  FIQ_R11},
            {"R12_FIQ",  FIQ_R12},
            {"R13_FIQ",  FIQ_R13},
            {"R14_FIQ",  FIQ_R14},
            {"SP_FIQ",  FIQ_R13},
            {"LR_FIQ",  FIQ_R14},

            {NULL, 0}
};

typedef struct 
{
    char *CmdName;
    uint8 (* Cmd)(char *Parameter, uint8 PLen);
}_CMD;

const static _CMD CmdData[] = 
{
            {"LOAD", Cmdload},
            {"RUN", CmdRun},
            {"SET", CmdSet},
            {"SFR", CmdSfr},
            {"SFRW", CmdSfr},
            {"SFRH", CmdSfrh},
            {"SFRB", CmdSfrb},
            {NULL, NULL}
};

/*********************************************************************************************************
** Function name: Cmdload
** Descriptions:  load data in ram
** Input:Parameter: Parameter string
**       PLen: Parameter string length
** Output: TRUE:  OK
**        FALSE: NOT OK
** Created by:   chenmingji
** Created Date: 2005-02-24
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date: 
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
        static uint8 Cmdload(char *Parameter, uint8 PLen)
{
    HANDLE Handle;
    uint32 Addr, Length;
    char Ch;
    
    if (PLen < 1)
    {
        return FALSE;
    }
    PLen--;
    
    Parameter++;
    sscanf(Parameter, "0X%X", &Addr);
    if (Addr >= BOTTOM_OF_USR)
    {
        return FALSE;
    }

    Length = BOTTOM_OF_USR - Addr;

    do
    {
        Ch = *Parameter++;
        if (Ch == ' ')
        {
            break;
        }
    }while (--PLen != 0);

    if (PLen == 0)
    {
        return FALSE;
    }

    Handle = FileOpen(Parameter, "r");
    if (Handle == Not_Open_FILE)
    {
        return FALSE;
    }
    
    FileRead((void *)Addr, Length, Handle);
    FileClose(Handle);
    return TRUE;
}

/*********************************************************************************************************
** Function name: CmdSet
** Descriptions:  Set register cmd
** Input:Parameter: Parameter string
**       PLen: Parameter string length
** Output: TRUE:  OK
**        FALSE: NOT OK
** Created by:   chenmingji
** Created Date: 2005-02-24
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date: 
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
        static uint8 CmdSet(char *Parameter, uint8 PLen)
{
    const _REG *reg;
    char *cp1, *cp2;
    char temp;
    unsigned int i;
    uint32 Data;
    
    if (PLen < 1)
    {
        return FALSE;
    }

    Parameter++;
    PLen--;
    reg = RegTable;
    while (reg->RegName != NULL)
    {
        cp1 = reg->RegName;
        cp2 = Parameter;
        i = PLen;
        do
        {
            temp = *cp2;
            if (temp == ' ' || temp == '=')
            {
                cp2++;
                sscanf(cp2, "0X%X", &Data);
                Regs[reg->Index] = Data;
                return TRUE;
            }
            if (temp == 0)
            {
                break;
            }
            if (*cp1 == temp)
            {
                cp1++;
                cp2++;
                continue;
            }
            break;
        } while (--i != 0);
        reg++;
    }

    return FALSE;
}


/*********************************************************************************************************
** Function name: CmdSfr
** Descriptions:  Set 32bit register cmd
** Input:Parameter: Parameter string
**       PLen: Parameter string length
** Output: TRUE:  OK
**        FALSE: NOT OK
** Created by:   chenmingji
** Created Date: 2005-02-24
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified Date: