OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [drivers/] [flash.c] - Blame information for rev 452

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 2 marcus.erl 
#include "common.h"
2 
#include "support.h"
3 
#include "flash.h"
4 
 
5 
int fl_init (void)
6 
{
7 
  unsigned long tmp;
8 
  reg_write(FLASH_BASE_ADDR, 0x00ff00ff);
9 
  reg_write(FLASH_BASE_ADDR, 0x00900090);
10 
  tmp = reg_read(FLASH_BASE_ADDR) << 8;
11 
  reg_write(FLASH_BASE_ADDR, 0x00900090);
12 
  tmp = tmp | reg_read(FLASH_BASE_ADDR + 4);
13 
 
14 
  debug("id = %08x ", tmp);
15 
  /*  if (tmp != 0x89188918) {
16 
    printf ("bad ID\n");
17 
    return 1;
18 
    } else debug ("good ID\n");*/
19 
  reg_write(FLASH_BASE_ADDR, 0x00ff00ff);
20 
 
21 
  return 0;
22 
}
23 
 
24 
int check_error (unsigned long sr, unsigned long addr)
25 
{
26 
  if(check_error_bit(sr, FL_SR_ERASE_ERR)) {
27 
    printf ("erase error at %08lx\n", addr);
28 
    /* Clear status register */
29 
    reg_write(FLASH_BASE_ADDR, 0x05D00050);
30 
    return 1;
31 
  } else if (check_error_bit(sr, FL_SR_PROG_ERR)) {
32 
    printf ("program error at %08lx\n", addr);
33 
    /* Clear status register */
34 
    reg_write(FLASH_BASE_ADDR, 0x05D00050);
35 
    return 1;
36 
  } else if (check_error_bit(sr, FL_SR_PROG_LV)) {
37 
    printf ("low voltage error\n");
38 
    /* Clear status register */
39 
    reg_write(FLASH_BASE_ADDR, 0x05D00050);
40 
    return 1;
41 
  } else if (check_error_bit(sr, FL_SR_LOCK)) {
42 
    printf ("lock bit error at %08lx\n", addr);
43 
    /* Clear status register */
44 
    reg_write(FLASH_BASE_ADDR, 0x05D00050);
45 
    return 1;
46 
  }
47 
  return 0;
48 
}
49 
 
50 
int fl_block_erase (unsigned long addr)
51 
{
52 
  unsigned long sr;
53 
 
54 
  reg_write(addr & ~(FLASH_BLOCK_SIZE - 1), 0x00200020);
55 
  reg_write(addr & ~(FLASH_BLOCK_SIZE - 1), 0x00D000D0);
56 
 
57 
  do {
58 
#if 0
59 
    reg_write(FLASH_BASE_ADDR, 0x00700070);
60 
#endif
61 
    sr = reg_read(addr & ~(FLASH_BLOCK_SIZE - 1));
62 
  } while (fl_wait_busy(sr));
63 
 
64 
  /* Clear status register */
65 
  reg_write(FLASH_BASE_ADDR, 0x00500050);
66 
  reg_write(FLASH_BASE_ADDR, 0x00ff00ff);
67 
#ifndef CFG_IN_FLASH
68 
  return check_error(sr, addr);
69 
#else
70 
  return 0;
71 
#endif
72 
}
73 
 
74 
int fl_unlock_one_block (unsigned long addr)
75 
{
76 
  unsigned long sr = 0x0;
77 
 
78 
  reg_write((addr & ~(FLASH_BLOCK_SIZE - 1)), 0x00600060);
79 
  reg_write((addr & ~(FLASH_BLOCK_SIZE - 1)), 0x00d000d0);
80 
 
81 
  do {
82 
#if 0
83 
    reg_write(FLASH_BASE_ADDR, 0x00700070);
84 
#endif
85 
    sr = reg_read(addr & ~(FLASH_BLOCK_SIZE - 1));
86 
  } while (fl_wait_busy(sr));
87 
 
88 
  /* Clear status register */
89 
  reg_write(FLASH_BASE_ADDR, 0x00500050);
90 
  reg_write(FLASH_BASE_ADDR, 0x00ff00ff);
91 
 
92 
#ifndef CFG_IN_FLASH
93 
  return check_error(sr, addr);
94 
#else
95 
  return 0;
96 
#endif
97 
}
98 
 
99 
int fl_unlock_blocks (void)
100 
{
101 
  unsigned long c;
102 
  unsigned int i;
103 
 
104 
  for (i = 0, c = FLASH_BASE_ADDR; i < (FLASH_SIZE / FLASH_BLOCK_SIZE);
105 
       i++, c += FLASH_BLOCK_SIZE)
106 
    if (fl_unlock_one_block (c)) return -1;
107 
 
108 
  return 0;
109 
}
110 
 
111 
int fl_word_program (unsigned long addr, unsigned long val)
112 
{
113 
  unsigned long sr;
114 
 
115 
  reg_write(addr, 0x00400040);
116 
  reg_write(addr, val);
117 
  do {
118 
#if FLASH_ORG_16_1 /* bender */
119 
    reg_write(FLASH_BASE_ADDR, 0x00700070);
120 
#endif
121 
    sr = reg_read(addr & ~(FLASH_BLOCK_SIZE - 1));
122 
  } while (fl_wait_busy(sr));
123 
  /* Clear status register */
124 
 
125 
  reg_write(FLASH_BASE_ADDR, 0x00500050);
126 
  reg_write(FLASH_BASE_ADDR, 0x00ff00ff);
127 
#ifndef CFG_IN_FLASH
128 
  return check_error(sr, addr);
129 
#else
130 
  return 0;
131 
#endif
132 
}
133 
 
134 
/* erase = 1 (whole chip), erase = 2 (required only) */
135 
int fl_program (unsigned long src_addr, unsigned long dst_addr, unsigned long len, int erase, int verify)
136 
{
137 
  unsigned long tmp, taddr, tlen;
138 
  unsigned long i;
139 
 
140 
  if (erase) {
141 
    fl_unlock_blocks ();
142 
 
143 
    if (erase == 2) {
144 
      taddr = dst_addr & ~(FLASH_BLOCK_SIZE - 1);
145 
      tlen = (dst_addr + len + FLASH_BLOCK_SIZE - 1) / FLASH_BLOCK_SIZE;
146 
    } else {
147 
      taddr = FLASH_BASE_ADDR;
148 
      tlen = FLASH_SIZE / FLASH_BLOCK_SIZE;
149 
    }
150 
 
151 
    printf ("Erasing flash... ");
152 
    for (i = 0, tmp = taddr; i < tlen; i++, tmp += FLASH_BLOCK_SIZE)
153 
      if (fl_block_erase (tmp))
154 
        return 1;
155 
 
156 
    printf ("done\n");
157 
 
158 
    if (verify) {
159 
      printf ("Writing test pattern... ");
160 
      for (tmp = taddr; tmp < taddr + tlen * FLASH_BLOCK_SIZE; i++, tmp += INC_ADDR)
161 
        if (fl_word_program (tmp, tmp))
162 
          return 1;
163 
 
164 
      printf ("done\n");
165 
 
166 
      printf ("Checking... ");
167 
 
168 
      for (tmp = taddr; tmp < taddr + tlen * FLASH_BLOCK_SIZE; i++, tmp += INC_ADDR)
169 
        if (reg_read(tmp) != tmp) {
170 
          printf ("failed on location %08lx: %08lx\n", tmp, REG32(tmp));
171 
          return 1;
172 
        }
173 
      printf ("done\n");
174 
    }
175 
  }
176 
 
177 
  reg_write(FLASH_BASE_ADDR, 0x00ff00ff);
178 
 
179 
  printf ("Copying from %08lx-%08lx to %08lx-%08lx\n", src_addr, src_addr + len - 1, dst_addr, dst_addr + len - 1);
180 
 
181 
  tlen = len / 8;
182 
  tmp = 0;
183 
 
184 
  printf ("Programing");
185 
  for (i = 0; i < len; i += INC_ADDR) {
186 
    if (fl_word_program (dst_addr + i, reg_read(src_addr + i)))
187 
      return 1;
188 
 
189 
    if (i > tmp) {
190 
      printf (".");
191 
      tmp += tlen;
192 
    }
193 
  }
194 
 
195 
  printf (" done\n");
196 
 
197 
  if (verify) {
198 
    printf ("Verifying");
199 
    tmp = 0;
200 
    for (i = 0; i < len; i += INC_ADDR) {
201 
      if(reg_read(src_addr + i) != reg_read(dst_addr + i)) {
202 
        printf ("error at %08lx: %lx != %lx\n", src_addr + i,
203 
                reg_read(src_addr + i), reg_read(dst_addr + i));
204 
        return 1;
205 
      }
206 
      if (i > tmp) {
207 
        printf (".");
208 
        tmp += tlen;
209 
      }
210 
    }
211 
  }
212 
 
213 
  printf (" done\n");
214 
  return 0;
215 
}

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.