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
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/rendition/vloaduc.c,v 1.13tsi Exp $ */
/*
* includes
*/
#include "rendition.h"
#include "v1kregs.h"
#include "v1krisc.h"
#include "vloaduc.h"
#include "vos.h"
#include "elf.h"
/*
* defines
*/
#ifdef X_LITTLE_ENDIAN
/* maybe swap word */
#define SW32(x) lswapl(x)
#define SW16(x) lswaps(x)
#else /* BIG_ENDIAN */
#define SW32(x) (x)
#define SW16(x) (x)
#endif /* #ifdef LITTLE_ENDIAN */
/*
* local function prototypes
*/
static void loadSection2board(ScrnInfoPtr pScreenInfo, int fd,
Elf32_Shdr *shdr);
static void loadSegment2board(ScrnInfoPtr pScreenInfo, int fd,
Elf32_Phdr *phdr);
static int seek_and_read_hdr(int fd, void *ptr, long int offset,
int size, int cnt);
static void mmve(ScrnInfoPtr pScreenInfo, vu32 size, vu8 *data, vu32 phys_addr);
/*
* functions
*/
/*
* int verite_load_ucfile(ScrnInfoPtr pScreenInfo, char *file_name)
*
* Loads verite elf file microcode file in |name| onto the board.
* NOTE: Assumes the ucode loader is already running on the board!
*
* Returns the program's entry point, on error -1;
*/
int
verite_load_ucfile(ScrnInfoPtr pScreenInfo, char *file_name)
{
/* renditionPtr pRendition = RENDITIONPTR(pScreenInfo); */
int num;
int sz;
int fd;
Elf32_Phdr *pphdr, *orig_pphdr=NULL;
Elf32_Shdr *pshdr, *orig_pshdr=NULL;
Elf32_Ehdr ehdr ;
#ifdef DEBUG
ErrorF("RENDITION: Loading microcode %s\n", file_name);
#endif
/* Stop the RISC if it happends to run */
v1k_stop (pScreenInfo);
/* open file and read ELF-header */
if (-1 == (fd=open(file_name, O_RDONLY, 0))) {
ErrorF("RENDITION: Cannot open microcode %s\n", file_name);
return -1;
}
if (read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr)) {
ErrorF("RENDITION: Cannot read microcode header %s\n", file_name);
return -1;
}
if (0 != strncmp((char *)&ehdr.e_ident[1], "ELF", 3)) {
ErrorF("RENDITION: Microcode header in %s is corrupt\n", file_name);
return -1;
}
/* read in the program header(s) */
sz=SW16(ehdr.e_phentsize);
num=SW16(ehdr.e_phnum);
if (0!=sz && 0!=num) {
orig_pphdr=pphdr=(Elf32_Phdr *)xalloc(sz*num);
if (!pphdr) {
ErrorF("RENDITION: Cannot allocate global memory (1)\n");
close(fd);
return -1;
}
if (seek_and_read_hdr(fd, pphdr, SW32(ehdr.e_phoff), sz, num)) {
ErrorF("RENDITION: Error reading microcode (1)\n");
close(fd);
return -1;
}
orig_pshdr=pshdr=(Elf32_Shdr *)0;
}
else {
orig_pphdr=pphdr=(Elf32_Phdr *)0;
/* read in the section header(s) */
sz=SW16(ehdr.e_shentsize);
num=SW16(ehdr.e_shnum);
if (0!=sz && 0!=num) {
orig_pshdr=pshdr=(Elf32_Shdr *)xalloc(sz*num);
if (!pshdr) {
ErrorF("RENDITION: Cannot allocate global memory (2)\n");
close(fd);
return -1;
}
if (seek_and_read_hdr(fd, pshdr, SW32(ehdr.e_shoff), sz, num)) {
ErrorF("RENDITION: Error reading microcode (2)\n");
close(fd);
return -1;
}
}
else
pshdr=(Elf32_Shdr *)0;
}
if (pphdr) {
do {
if (SW32(pphdr->p_type) == PT_LOAD)
loadSegment2board(pScreenInfo, fd, pphdr);
pphdr=(Elf32_Phdr *)(((char *)pphdr)+sz);
} while (--num);
xfree(orig_pphdr);
}
else {
do {
if (SW32(pshdr->sh_size) && (SW32(pshdr->sh_flags) & SHF_ALLOC)
&& ((SW32(pshdr->sh_type)==SHT_PROGBITS)
|| (SW32(pshdr->sh_type)==SHT_NOBITS)))
loadSection2board(pScreenInfo, fd, pshdr);
pshdr=(Elf32_Shdr *)(((char *)pshdr)+sz);
} while (--num) ;
xfree(orig_pshdr);
}
close(fd);
return SW32(ehdr.e_entry);
}
/*
* local functions
*/
static void
loadSection2board(ScrnInfoPtr pScreenInfo, int fd, Elf32_Shdr *shdr)
{
/* renditionPtr pRendition = RENDITIONPTR(pScreenInfo); */
ErrorF("vlib: loadSection2board not implemented yet!\n");
}
static void
loadSegment2board(ScrnInfoPtr pScreenInfo, int fd, Elf32_Phdr *phdr)
{
/* renditionPtr pRendition = RENDITIONPTR(pScreenInfo); */
vu8 *data;
vu32 offset=SW32(phdr->p_offset);
vu32 size=SW32(phdr->p_filesz);
vu32 physAddr=SW32(phdr->p_paddr);
if (lseek(fd, offset, SEEK_SET) != offset) {
ErrorF("RENDITION: Failure in loadSegmentToBoard, offset %lx\n",
(unsigned long)offset);
return;
}
data=(vu8 *)xalloc(size);
if (NULL == data){
ErrorF("RENDITION: GlobalAllocPtr couldn't allocate %lx bytes",
(unsigned long)size);
return;
}
if (read(fd, data, size) != size){
ErrorF("RENDITION: verite_readfile Failure, couldn't read %lx bytes ",
(unsigned long)size);
return;
}
mmve(pScreenInfo, size, data, physAddr);
xfree(data);
}
static int
seek_and_read_hdr(int fd, void *ptr, long int offset, int size,
int cnt)
{
if (lseek(fd, offset, SEEK_SET) != offset)
return 1 ;
if (size*cnt != read(fd, ptr, size*cnt))
return 2 ;
return 0 ;
}
static void
mmve(ScrnInfoPtr pScreenInfo, vu32 size, vu8 *data, vu32 phys_addr)
{
renditionPtr pRendition = RENDITIONPTR(pScreenInfo);
vu8 memend;
vu32 *dataout;
vu8 *vmb=pRendition->board.vmem_base;
/* swap bytes 3<>0, 2<>1 */
memend=verite_in8(pRendition->board.io_base+MEMENDIAN);
verite_out8(pRendition->board.io_base+MEMENDIAN, MEMENDIAN_END);
dataout=(vu32 *)data;
/* If RISC happends to be running, be sure it is stopped */
v1k_stop(pScreenInfo);
while (size > 0) {
verite_write_memory32(vmb, phys_addr, *dataout);
phys_addr+=4;
dataout++;
size-=4;
}
verite_out8(pRendition->board.io_base+MEMENDIAN, memend);
}
/*
* end of file vloaduc.c
*/
|
