* Reads RCBA register at address 'addr' and stores it in 'val'. * Returns 1 on error and 0 on success. */
| 71 | * Returns 1 on error and 0 on success. |
| 72 | */ |
| 73 | int read_rcba32(uint32_t addr, uint32_t *val) |
| 74 | { |
| 75 | volatile uint8_t *rcba; |
| 76 | const uint32_t rcba_phys = get_rcba_phys(); |
| 77 | |
| 78 | if (!rcba_phys) { |
| 79 | printf("Could not get RCBA address\n"); |
| 80 | return 1; |
| 81 | } |
| 82 | |
| 83 | rcba = map_physical((off_t)rcba_phys, size); |
| 84 | if (rcba == NULL) { |
| 85 | printf("Could not map RCBA\n" |
| 86 | "Do you have kernel cmdline argument 'iomem=relaxed' set ?\n"); |
| 87 | return 1; |
| 88 | } |
| 89 | |
| 90 | *val = *(uint32_t *)(rcba + addr); |
| 91 | |
| 92 | munmap((void *)rcba, size); |
| 93 | return 0; |
| 94 | } |
no test coverage detected