1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/occ_405/firdata/pnor_util.c $ */
/* */
/* OpenPOWER OnChipController Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015,2017 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
/* Interfaces to write into PNOR */
#include <native.h>
#include <pnor_mboxdd.h>
#include <pnor_util.h>
#include <norflash.h>
#include <firdata/ecc.h>
/*================================================================= */
/* The offset of the next byte to write */
uint32_t g_next_byte = 0xFFFFFFFF;
/* Size of the FIRDATA section of PNOR */
uint32_t g_pnor_size = 0;
/* Global PNOR Mbox object */
pnorMbox_t g_pnorMbox;
/* Cache to queue up PNOR writes */
uint8_t g_write_cache[PAGE_PROGRAM_BYTES];
/* Current position of data inside write cache */
uint32_t g_write_cache_index = 0;
/**
* @brief Write 8 bytes of data into PNOR starting
*/
int32_t pnor_write_8B( uint64_t i_data )
{
int32_t rc = SUCCESS;
if ( (g_next_byte == 0xFFFFFFFF) || /* initialized data */
((g_next_byte + g_pnor_size) < (g_next_byte + 9)) ) /* make sure there is room */
{
PK_TRACE("FAILURE: pnor_write_8B> g_next_byte=%.8X, g_pnor_size=%.8X",
g_next_byte,g_pnor_size);
/* must have been some error in the prep */
return FAIL;
}
/* Create 9-byte ECC-ified version */
uint8_t data9[9];
injectECC( (uint8_t*)(&i_data), 8, data9 );
/* Copy data into the write cache until we queue up
a big chunk of data to write. This is more efficient
and avoids handling the write boundary of the PP
command internally. */
uint32_t cpsz = 9;
if( (g_write_cache_index + cpsz) > PAGE_PROGRAM_BYTES )
{
cpsz = PAGE_PROGRAM_BYTES - g_write_cache_index;
}
int i;
for (i=0; i < cpsz; i++)
{
g_write_cache[g_write_cache_index+i] = data9[i];
}
g_write_cache_index += cpsz;
/* Write a complete chunk into the flash */
if( g_write_cache_index == PAGE_PROGRAM_BYTES )
{
errorHndl_t tmp = writeFlash( &g_pnorMbox,
g_next_byte,
PAGE_PROGRAM_BYTES,
g_write_cache );
if ( NO_ERROR != tmp )
{
TRACFCOMP("pnor_write_8B> writeFlash failed");
/* hit an error, stop any more writes from happening */
g_next_byte = 0xFFFFFFFF;
g_pnor_size = 0;
return FAIL;
}
g_next_byte += PAGE_PROGRAM_BYTES;
for (i=0; i < PAGE_PROGRAM_BYTES; i++)
{
g_write_cache[i] = 0xFF;
}
g_write_cache_index = 0;
/* Handle the overflow */
if( (9 - cpsz) > 0 )
{
for (i=0; i < 9-cpsz; i++)
{
g_write_cache[i] = data9[cpsz+i];
}
g_write_cache_index = 9 - cpsz;
}
}
return rc;
}
/**
* @brief Perform any necessary operations to prepare
* the PNOR hw/code for writing
*/
errorHndl_t pnor_prep( HOMER_PnorInfo_t* i_pnorInfo )
{
errorHndl_t l_err = NO_ERROR;
/* Figure out where to start */
g_pnor_size = i_pnorInfo->pnorSize;
g_next_byte = i_pnorInfo->pnorOffset;
TRAC_IMP("pnor_prep: pnorOffset:0x%08X pnorSize:0x%08X",
g_next_byte, g_pnor_size);
memset( g_write_cache, 0xFF, PAGE_PROGRAM_BYTES );
/* Can we rely on skiboot leaving things in a good state? */
l_err = hwInit(&g_pnorMbox);
if( l_err )
{
/* hit an error, stop any writes from happening */
g_next_byte = 0xFFFFFFFF;
g_pnor_size = 0;
}
return l_err;
}
/*------------------------------------------------------------------------------ */
int32_t PNOR_writeFirData( HOMER_PnorInfo_t i_pnorInfo,
uint8_t * i_buf, uint32_t i_bufSize )
{
int32_t rc = SUCCESS;
do
{
/* Initialize the PNOR data. */
errorHndl_t l_err = pnor_prep( &i_pnorInfo );
if( l_err )
{
TRAC_ERR("PNOR_writeFirData: pnor_prepreturned failure");
rc = FAIL;
break; /*nothing more to do here*/
}
uint32_t idx = 0;
uint64_t dataChunk = 0;
uint32_t sz_dataChunk = sizeof(uint64_t);
/* Add PNOR data 8 bytes at a time. */
for ( idx = 0; idx < i_bufSize; idx += sz_dataChunk )
{
uint64_t* l_data_ptr = (uint64_t*)(&i_buf[idx]);
dataChunk = *l_data_ptr;
rc = pnor_write_8B( dataChunk );
if ( SUCCESS != rc )
{
TRACFCOMP( "pnor_write_8B() failed during FIR write" );
break;
}
}
if ( SUCCESS != rc ) break;
/* Add any extra bytes if they exist at the end of the buffer. */
if ( idx != i_bufSize )
{
int i;
uint32_t extraBytes = idx - i_bufSize;
uint8_t* l_src_ptr = (uint8_t*)(&i_buf[idx]);
uint8_t* l_dest_ptr = (uint8_t*)(&dataChunk);
for (i = 0; i < extraBytes; i++)
{
l_dest_ptr[i] = l_src_ptr[i];
}
rc = pnor_write_8B( dataChunk );
if ( SUCCESS != rc )
{
TRACFCOMP( "pnor_write_8B() failed during blank fill" );
break;
}
}
/* Fill the rest of the page with good ECC */
for ( idx = i_bufSize;
idx < i_pnorInfo.pnorSize;
idx += sz_dataChunk )
{
dataChunk = 0xFFFFFFFFFFFFFFFFull;
rc = pnor_write_8B( dataChunk );
if ( SUCCESS != rc )
{
TRACFCOMP( "pnor_write_8B() failed during ECC fill" );
break;
}
}
} while (0);
TRACFCOMP("<<PNOR_writeFirData");
return rc;
}
|
