gonzui

    1: /*
    2:  *----------------------------------------------------------------------
    3:  *    T-Kernel 2.0 Software Package
    4:  *
    5:  *    Copyright 2011 by Ken Sakamura.
    6:  *    This software is distributed under the latest version of T-License 2.x.
    7:  *----------------------------------------------------------------------
    8:  *
    9:  *    Released by T-Engine Forum(http://www.t-engine.org/) at 2011/05/17.
   10:  *    Modified by TRON Forum(http://www.tron.org/) at 2015/06/01.
   11:  *
   12:  *----------------------------------------------------------------------
   13:  */
   14: 
   15: /*
   16:  *      cfi.c
   17:  *
   18:  *       CFI(Intel) Flash ROM specification
   19:  */
   20: 
   21: #include "flash.h"
   22: 
   23: /*
   24:   Flash ROM specification:
   25:         Intel 28F256P30B 32MB (256Mbits)
   26:                  32 KB x 4
   27:                 128 KB x 255
   28: 
   29:   command:
   30:         ba: Block Addr, xa: Any Addr, sr: Status Reg, xsr: extend Status Reg.
   31: 
   32:         Reset(Read Array):
   33:                 xa<-FF
   34:         Block Erase:
   35:                 ba<-20, xa<-D0, sr<-xa & check
   36:         Write (via Buffer 16 words):
   37:                 ba<-E8, xsr<-xa & check, ba<-15(count), da<-data, ..
   38:                 xa<-D0, sr<-xa & check
   39:         Write:
   40:                 xa<-40(10), da<-data, sr<-xa & check
   41:         Read sr:
   42:                 xa<-70, sr<-xa, if any error, xa<-50 (clear sr)
   43:                 sr: b7:0x80   1:Ready, 0:busy
   44:                     b5:0x20   1:Error Erase
   45:                     b4:0x10   1:Error Set Lock-bit
   46:                     b3:0x08   1:Low Voltage Error
   47:                     b1:0x02   1:Locked
   48:                 xsr:b7:0x80   1:WriteBuffer Available
   49:         Clear Lock-bits:
   50:                 xa<-60, xa<-D0, sr<-xa & check
   51:         ID read:
   52:                 xa<-90, man-id<- ba:0, dev-id <- ba:2
   53:                 man-id:       89    Intel
   54:                 dev-id:       001C  28F256P30B
   55: */
   56: 
   57: /*
   58:  * CFI(Intel) Flash ROM specification
   59:  */
   60: EXPORT  const JEDEC_SPEC JedecSpec[] = {
   61:  { 0x0089, 0x001c, 0x0000, 0x0000, 32, 0, 0x8888, 0x8000 }, /* 28F256P30B */
   62: };
   63: 
   64: EXPORT  const W  N_JedecSpec = sizeof(JedecSpec) / sizeof(JEDEC_SPEC);