btflash.c

strongarm的bootloader

/****************************************************************************/
/* Copyright 2000 Compaq Computer Corporation.                              */
/*                                           .                              */
/* Copying or modifying this code for any purpose is permitted,             */
/* provided that this copyright notice is preserved in its entirety         */
/* in all copies or modifications.  COMPAQ COMPUTER CORPORATION             */
/* MAKES NO WARRANTIES, EXPRESSED OR IMPLIED, AS TO THE USEFULNESS          */
/* OR CORRECTNESS OF THIS CODE OR ITS FITNESS FOR ANY PARTICULAR            */
/* PURPOSE.                                                                 */
/****************************************************************************/
/*
 * btflash.c - Flash erase and program routines for Compaq Personal Server Monitor
 *
 */


#include "btflash.h"

#define FLASH_TIMEOUT 20000000

int btflash_verbose = 0;

/* default to physical address, update this variable when MMU gets changed */
volatile unsigned long *flashword = (volatile unsigned long*)FLASH_BASE;
#define doubleword(w_) ((((w_)&0xFFFF) << 16)|((w_)&0xFFFF))

#ifdef CONFIG_AMD_FLASH
static unsigned long flashSectors_Am29LV160BB[] = {
  0x00000000, /* first sector of bootldr */
  0x00008000, /* last sector of bootldr */
  0x0000c000, /* param sector */
  0x00010000, /* kernel starts here */
  0x00020000,
  0x00040000,
  0x00060000,
  0x00080000,
  0x000A0000,
  0x000C0000,
  0x000E0000,
  0x00100000,
  0x00120000,
  0x00140000,
  0x00160000,
  0x00180000,
  0x001A0000,
  0x001C0000,
  0x001E0000,
  0x00200000,
  0x00220000,
  0x00240000,
  0x00260000,
  0x00280000,
  0x002A0000,
  0x002C0000,
  0x002E0000,
  0x00300000, /* user code starts here */
  0x00320000,
  0x00340000,
  0x00360000,
  0x00380000,
  0x003A0000,
  0x003C0000,
  0x003E0000,
  0x00400000 /* guard sector -- not in flash */
};


static int amdFlashReset(void);
static int amdFlashProgramWord(unsigned long flashAddress, unsigned long value);
static int amdFlashProgramBlock(unsigned long flashAddress, unsigned long *values, int nbytes);
static int amdFlashEraseChip(void);
static int amdFlashEraseSector(unsigned long sectorAddress);
static int amdFlashEraseRange(unsigned long start, unsigned long len);
static int amdFlashProtectRange(unsigned long start, unsigned long len, int protect);

static FlashAlgorithm amdFlashAlgorithm = {
   amdFlashReset,
   amdFlashProgramWord,
   amdFlashProgramBlock,
   amdFlashEraseChip,
   amdFlashEraseSector,
   amdFlashEraseRange,
   amdFlashProtectRange
};

static struct FlashDescriptor flashDescriptor_Am29LV160BB = {
   "Am29LV160BB",
   1, 0x2249, 
   &amdFlashAlgorithm,
   sizeof(flashSectors_Am29LV160BB)/sizeof(dword) - 1, flashSectors_Am29LV160BB,
   { "bootldr",   0x00000000, 0x0000c000, LFR_PATCH_BOOTLDR },
   { "params",    0x0000c000, 0x00004000, 0 },
   { "kernel",    0x00010000, 0x00200000, LFR_KERNEL },
   { "ramdisk",   0x00100000, 0x00300000, LFR_SIZE_PREFIX },
   { "usercode",  0x00300000, 0x00100000, LFR_SIZE_PREFIX },
   { "altkernel", 0x00300000, 0x00100000, LFR_KERNEL }
};
#endif /* CONFIG_AMD_FLASH */

#ifdef CONFIG_AMD_FLASH
static unsigned long flashSectors_Am29DL323CT[] = {
    0x00000000,
    0x00020000,
    0x00040000,
    0x00060000,
    0x00080000,
    0x000a0000,
    0x000c0000,
    0x000e0000,
    0x00100000,
    0x00120000,
    0x00140000,
    0x00160000,
    0x00180000,
    0x001a0000,
    0x001c0000,
    0x001e0000,
    0x00200000,
    0x00220000,
    0x00240000,
    0x00260000,
    0x00280000,
    0x002a0000,
    0x002c0000,
    0x002e0000,
    0x00300000,
    0x00320000,
    0x00340000,
    0x00360000,
    0x00380000,
    0x003a0000,
    0x003c0000,
    0x003e0000,
    0x00400000,
    0x00420000,
    0x00440000,
    0x00460000,
    0x00480000,
    0x004a0000,
    0x004c0000,
    0x004e0000,
    0x00500000,
    0x00520000,
    0x00540000,
    0x00560000,
    0x00580000,
    0x005a0000,
    0x005c0000,
    0x005e0000,
    0x00600000,
    0x00620000,
    0x00640000,
    0x00660000,
    0x00680000,
    0x006a0000,
    0x006c0000,
    0x006e0000,
    0x00700000,
    0x00720000,
    0x00740000,
    0x00760000,
    0x00780000,
    0x007a0000,
    0x007c0000,
    0x007e0000,
    0x007e4000,
    0x007e8000,
    0x007ec000,
    0x007f0000,
    0x007f4000,
    0x007f8000,
    0x007fc000,
    0x00800000 /* guard entry */
};

static struct FlashDescriptor flashDescriptor_Am29DL323CT =  {
   "Am29DL323CT", 
   1, 0x2250, 
   &amdFlashAlgorithm,
   sizeof(flashSectors_Am29DL323CT)/sizeof(dword) - 1, flashSectors_Am29DL323CT,
   { "bootldr",   0x00000000, 0x00020000, LFR_PATCH_BOOTLDR },
   { "params",    0x007f4000, 0x00004000, 0 },
   { "kernel",    0x00020000, 0x000e0000, LFR_KERNEL },
   { "ramdisk",   0x00100000, 0x00300000, LFR_SIZE_PREFIX },
   { "usercode",  0x00100000, 0x00600000, 0 }, /* overlaps ramdisk */
   { "altkernel", 0x00700000, 0x000f0000, LFR_KERNEL },
   { "debugger",  0x00800000, 0x00000000, LFR_KERNEL }
};

static unsigned long flashSectors_Am29DL323CB[] = {
    0x00000000,
    0x00020000,
    0x00040000,
    0x00060000,
    0x00080000,
    0x000a0000,
    0x000c0000,
    0x000e0000,
    0x00100000,
    0x00120000,
    0x00140000,
    0x00160000,
    0x00180000,
    0x001a0000,
    0x001c0000,
    0x001e0000,
    0x00200000,
    0x00220000,
    0x00240000,
    0x00260000,
    0x00280000,
    0x002a0000,
    0x002c0000,
    0x002e0000,
    0x00300000,
    0x00320000,
    0x00340000,
    0x00360000,
    0x00380000,
    0x003a0000,
    0x003c0000,
    0x003e0000,
    0x00400000,
    0x00420000,
    0x00440000,
    0x00460000,
    0x00480000,
    0x004a0000,
    0x004c0000,
    0x004e0000,
    0x00500000,
    0x00520000,
    0x00540000,
    0x00560000,
    0x00580000,
    0x005a0000,
    0x005c0000,
    0x005e0000,
    0x00600000,
    0x00620000,
    0x00640000,
    0x00660000,
    0x00680000,
    0x006a0000,
    0x006c0000,
    0x006e0000,
    0x00700000,
    0x00720000,
    0x00740000,
    0x00760000,
    0x00780000,
    0x007a0000,
    0x007c0000,
    0x007e0000,
    0x00800000 /* guard entry */
};

static struct FlashDescriptor flashDescriptor_Am29DL323CB=  {
   "Am29DL323CB", 
   1, 0x2250, 
   &amdFlashAlgorithm,
   sizeof(flashSectors_Am29DL323CB)/sizeof(dword) - 1, flashSectors_Am29DL323CB,
   { "bootldr",   0x00000000, 0x00020000, LFR_PATCH_BOOTLDR },
   { "params",    0x007e0000, 0x00004000, 0 },
   { "kernel",    0x00020000, 0x000e0000, LFR_KERNEL },
   { "ramdisk",   0x00100000, 0x00400000, LFR_SIZE_PREFIX },
   { "usercode",  0x00100000, 0x00080000, 0 }, /* overlaps ramdisk */
   { "altkernel", 0x00600000, 0x00200000, LFR_KERNEL },
   { "debugger",  0x00700000, 0x00080000, LFR_KERNEL }
};
#endif /* CONFIG_AMD_FLASH */


#ifdef CONFIG_INTEL_FLASH
static unsigned long flashSectors_28F128J3A[] = {
  0x00000000, 
  0x00040000, 
  0x00080000, 
  0x000c0000, 
  0x00100000, 
  0x00140000, 
  0x00180000, 
  0x001c0000, 
  0x00200000, 
  0x00240000, 
  0x00280000, 
  0x002c0000, 
  0x00300000, 
  0x00340000, 
  0x00380000, 
  0x003c0000, 
  0x00400000, 
  0x00440000, 
  0x00480000, 
  0x004c0000, 
  0x00500000, 
  0x00540000, 
  0x00580000, 
  0x005c0000, 
  0x00600000, 
  0x00640000, 
  0x00680000, 
  0x006c0000, 
  0x00700000, 
  0x00740000, 
  0x00780000, 
  0x007c0000, 
  0x00800000, 
  0x00840000, 
  0x00880000, 
  0x008c0000, 
  0x00900000, 
  0x00940000, 
  0x00980000, 
  0x009c0000, 
  0x00a00000, 
  0x00a40000, 
  0x00a80000, 
  0x00ac0000, 
  0x00b00000, 
  0x00b40000, 
  0x00b80000, 
  0x00bc0000, 
  0x00c00000, 
  0x00c40000, 
  0x00c80000, 
  0x00cc0000, 
  0x00d00000, 
  0x00d40000, 
  0x00d80000, 
  0x00dc0000, 
  0x00e00000, 
  0x00e40000, 
  0x00e80000, 
  0x00ec0000, 
  0x00f00000, 
  0x00f40000, 
  0x00f80000, 
  0x00fc0000, 
  0x01000000, 
  0x01040000, 
  0x01080000, 
  0x010c0000, 
  0x01100000, 
  0x01140000, 
  0x01180000, 
  0x011c0000, 
  0x01200000, 
  0x01240000, 
  0x01280000, 
  0x012c0000, 
  0x01300000, 
  0x01340000, 
  0x01380000, 
  0x013c0000, 
  0x01400000, 
  0x01440000, 
  0x01480000, 
  0x014c0000, 
  0x01500000, 
  0x01540000, 
  0x01580000, 
  0x015c0000, 
  0x01600000, 
  0x01640000, 
  0x01680000, 
  0x016c0000, 
  0x01700000, 
  0x01740000, 
  0x01780000, 
  0x017c0000, 
  0x01800000, 
  0x01840000, 
  0x01880000, 
  0x018c0000, 
  0x01900000, 
  0x01940000, 
  0x01980000, 
  0x019c0000, 
  0x01a00000, 
  0x01a40000, 
  0x01a80000, 
  0x01ac0000, 
  0x01b00000, 
  0x01b40000, 
  0x01b80000, 
  0x01bc0000, 
  0x01c00000, 
  0x01c40000, 
  0x01c80000, 
  0x01cc0000, 
  0x01d00000, 
  0x01d40000, 
  0x01d80000, 
  0x01dc0000, 
  0x01e00000, 
  0x01e40000,