f89d8471 |
1 | /* |
2 | * (C) GraÅžvydas "notaz" Ignotas, 2009-2010 |
3 | * |
4 | * This work is licensed under the terms of any of these licenses |
5 | * (at your option): |
6 | * - GNU GPL, version 2 or later. |
7 | * - GNU LGPL, version 2.1 or later. |
8 | * - MAME license. |
9 | * See the COPYING file in the top-level directory. |
10 | */ |
11 | |
d572cbad |
12 | #include <stdio.h> |
13 | #include <string.h> |
14 | #include <sys/types.h> |
15 | #include <sys/stat.h> |
16 | #include <fcntl.h> |
17 | #include <sys/mman.h> |
18 | #include <unistd.h> |
19 | |
20 | #include "soc.h" |
fa8d1331 |
21 | |
22 | void (*gp2x_video_flip)(void); |
23 | void (*gp2x_video_flip2)(void); |
24 | void (*gp2x_video_changemode_ll)(int bpp); |
25 | void (*gp2x_video_setpalette)(int *pal, int len); |
26 | void (*gp2x_video_RGB_setscaling)(int ln_offs, int W, int H); |
27 | void (*gp2x_video_wait_vsync)(void); |
28 | |
29 | void (*gp2x_set_cpuclk)(unsigned int mhz); |
30 | |
31 | void (*set_lcd_custom_rate)(int is_pal); |
32 | void (*unset_lcd_custom_rate)(void); |
33 | void (*set_lcd_gamma)(int g100, int A_SNs_curve); |
34 | |
35 | void (*set_ram_timings)(void); |
36 | void (*unset_ram_timings)(void); |
053bef76 |
37 | int (*gp2x_read_battery)(void); |
fa8d1331 |
38 | |
b5bfb864 |
39 | unsigned int (*gp2x_get_ticks_ms)(void); |
40 | unsigned int (*gp2x_get_ticks_us)(void); |
41 | |
d572cbad |
42 | |
d572cbad |
43 | gp2x_soc_t soc_detect(void) |
44 | { |
45 | volatile unsigned short *memregs; |
46 | volatile unsigned int *memregl; |
1eb704b6 |
47 | static gp2x_soc_t ret = -2; |
d572cbad |
48 | int pollux_chipname[0x30/4 + 1]; |
49 | char *pollux_chipname_c = (char *)pollux_chipname; |
d572cbad |
50 | int memdev; |
51 | int i; |
52 | |
b6072c17 |
53 | if ((int)ret != -2) |
fa5e045b |
54 | /* already detected */ |
55 | return ret; |
56 | |
d572cbad |
57 | memdev = open("/dev/mem", O_RDONLY); |
58 | if (memdev == -1) |
59 | { |
60 | perror("open(/dev/mem)"); |
1eb704b6 |
61 | ret = -1; |
d572cbad |
62 | return -1; |
63 | } |
64 | |
65 | memregs = mmap(0, 0x20000, PROT_READ, MAP_SHARED, memdev, 0xc0000000); |
66 | if (memregs == MAP_FAILED) |
67 | { |
68 | perror("mmap(memregs)"); |
69 | close(memdev); |
1eb704b6 |
70 | ret = -1; |
d572cbad |
71 | return -1; |
72 | } |
73 | memregl = (volatile void *)memregs; |
74 | |
75 | if (memregs[0x1836>>1] == 0x2330) |
76 | { |
77 | printf("looks like this is MMSP2\n"); |
78 | ret = SOCID_MMSP2; |
79 | goto out; |
80 | } |
81 | |
82 | /* perform word reads. Byte reads might also work, |
83 | * but we don't want to play with that. */ |
84 | for (i = 0; i < 0x30; i += 4) |
85 | { |
86 | pollux_chipname[i >> 2] = memregl[(0x1f810 + i) >> 2]; |
87 | } |
88 | pollux_chipname_c[0x30] = 0; |
89 | |
90 | for (i = 0; i < 0x30; i++) |
91 | { |
92 | unsigned char c = pollux_chipname_c[i]; |
93 | if (c < 0x20 || c > 0x7f) |
94 | goto not_pollux_like; |
95 | } |
96 | |
97 | printf("found pollux-like id: \"%s\"\n", pollux_chipname_c); |
98 | |
99 | if (strncmp(pollux_chipname_c, "MAGICEYES-LEAPFROG-LF1000", 25) || |
100 | strncmp(pollux_chipname_c, "MAGICEYES-POLLUX", 16)) |
101 | { |
102 | ret = SOCID_POLLUX; |
103 | goto out; |
104 | } |
105 | |
106 | not_pollux_like: |
107 | out: |
108 | munmap((void *)memregs, 0x20000); |
109 | close(memdev); |
d572cbad |
110 | return ret; |
111 | } |
112 | |