| 1 | // vim:shiftwidth=2:expandtab |
| 2 | #include <sys/types.h> |
| 3 | #include <sys/stat.h> |
| 4 | #include <fcntl.h> |
| 5 | #include <unistd.h> |
| 6 | #include <sys/mman.h> |
| 7 | |
| 8 | #include "header.h" |
| 9 | #include "../common/warm.h" |
| 10 | #include "realfuncs.h" |
| 11 | |
| 12 | static int gpiodev = -1; |
| 13 | extern int memdev; // leasing from wiz_video |
| 14 | |
| 15 | int host_init(void) |
| 16 | { |
| 17 | gpiodev = open("/dev/GPIO", O_RDONLY); |
| 18 | if (gpiodev < 0) |
| 19 | perror(PFX "couldn't open /dev/GPIO"); |
| 20 | |
| 21 | return 0; |
| 22 | } |
| 23 | |
| 24 | int host_read_btns(void) |
| 25 | { |
| 26 | int r, value = 0; |
| 27 | |
| 28 | r = read(gpiodev, &value, 4); |
| 29 | if (value & 0x02) |
| 30 | value |= 0x05; |
| 31 | if (value & 0x08) |
| 32 | value |= 0x14; |
| 33 | if (value & 0x20) |
| 34 | value |= 0x50; |
| 35 | if (value & 0x80) |
| 36 | value |= 0x41; |
| 37 | |
| 38 | return value; |
| 39 | } |
| 40 | |
| 41 | void *host_mmap_upper(void) |
| 42 | { |
| 43 | void *ret; |
| 44 | int r; |
| 45 | |
| 46 | // Wiz GP2X |
| 47 | // <linux mem> 03460000-03ffffff 00ba0000 |
| 48 | // 02aa0000-02dfffff 03100000-0345ffff 00360000 |
| 49 | // <linux mem> 03000000-030fffff 00100000 |
| 50 | // 03000000-03ffffff 02000000-02ffffff 01000000 |
| 51 | ret = mmap((void *)0x82000000, 0x1000000, PROT_READ|PROT_WRITE|PROT_EXEC, |
| 52 | MAP_SHARED|MAP_FIXED, memdev, 0x3000000); |
| 53 | if (ret != (void *)0x82000000) |
| 54 | goto fail; |
| 55 | |
| 56 | ret = mmap((void *)0x83000000, 0x100000, PROT_READ|PROT_WRITE|PROT_EXEC, |
| 57 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, -1, 0); |
| 58 | if (ret != (void *)0x83000000) |
| 59 | goto fail; |
| 60 | |
| 61 | ret = mmap((void *)0x83100000, 0x360000, PROT_READ|PROT_WRITE|PROT_EXEC, |
| 62 | MAP_SHARED|MAP_FIXED, memdev, 0x2aa0000); |
| 63 | if (ret != (void *)0x83100000) |
| 64 | goto fail; |
| 65 | |
| 66 | ret = mmap((void *)0x83460000, 0xba0000, PROT_READ|PROT_WRITE|PROT_EXEC, |
| 67 | MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, -1, 0); |
| 68 | if (ret != (void *)0x83460000) |
| 69 | goto fail; |
| 70 | |
| 71 | r = warm_change_cb_range(WCB_B_BIT|WCB_C_BIT, 1, (void *)0x82000000, 0x1000000); |
| 72 | r |= warm_change_cb_range(WCB_B_BIT|WCB_C_BIT, 1, (void *)0x83100000, 0x360000); |
| 73 | if (r != 0) |
| 74 | err("could not make upper mem cacheable.\n"); |
| 75 | |
| 76 | return (void *)0x82000000; |
| 77 | |
| 78 | fail: |
| 79 | err("mmap %p: ", ret); |
| 80 | perror(NULL); |
| 81 | exit(1); |
| 82 | } |
| 83 | |