| paul@6 | 1 | /* |
| paul@6 | 2 | * Ben NanoNote stage 2 payload test. |
| paul@6 | 3 | * |
| paul@6 | 4 | * Copyright (C) 2015 Paul Boddie <paul@boddie.org.uk> |
| paul@6 | 5 | * Copyright (C) Wolfgang Spraul <wolfgang@sharism.cc> |
| paul@6 | 6 | * |
| paul@6 | 7 | * This program is free software; you can redistribute it and/or modify it under |
| paul@6 | 8 | * the terms of the GNU General Public License as published by the Free Software |
| paul@6 | 9 | * Foundation; either version 3 of the License, or (at your option) any later |
| paul@6 | 10 | * version. |
| paul@6 | 11 | * |
| paul@6 | 12 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| paul@6 | 13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| paul@6 | 14 | * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
| paul@6 | 15 | * details. |
| paul@6 | 16 | * |
| paul@6 | 17 | * You should have received a copy of the GNU General Public License along with |
| paul@6 | 18 | * this program. If not, see <http://www.gnu.org/licenses/>. |
| paul@6 | 19 | */ |
| paul@6 | 20 | |
| paul@18 | 21 | #include "board-nanonote.h" |
| paul@15 | 22 | #include "lcd.h" |
| paul@6 | 23 | |
| paul@6 | 24 | void c_main(void) |
| paul@6 | 25 | { |
| paul@18 | 26 | /* Relocate object locations. */ |
| paul@18 | 27 | |
| paul@18 | 28 | volatile unsigned int start_addr, got_start, got_end, addr, offset; |
| paul@18 | 29 | |
| paul@18 | 30 | /* get absolute start address */ |
| paul@18 | 31 | __asm__ __volatile__( |
| paul@18 | 32 | "move %0, $20\n\t" |
| paul@18 | 33 | : "=r"(start_addr) |
| paul@18 | 34 | : |
| paul@18 | 35 | ); |
| paul@18 | 36 | |
| paul@18 | 37 | /* get related GOT address */ |
| paul@18 | 38 | __asm__ __volatile__( |
| paul@18 | 39 | "la $4, _GLOBAL_OFFSET_TABLE_\n\t" |
| paul@18 | 40 | "move %0, $4\n\t" |
| paul@18 | 41 | "la $5, _got_end\n\t" |
| paul@18 | 42 | "move %1, $5\n\t" |
| paul@18 | 43 | : "=r"(got_start),"=r"(got_end) |
| paul@18 | 44 | : |
| paul@18 | 45 | ); |
| paul@18 | 46 | |
| paul@18 | 47 | /* calculate offset and correct GOT*/ |
| paul@18 | 48 | offset = start_addr - 0x80000000; |
| paul@18 | 49 | got_start += offset; |
| paul@18 | 50 | got_end += offset; |
| paul@18 | 51 | |
| paul@18 | 52 | for ( addr = got_start + 8; addr < got_end; addr += 4 ) |
| paul@18 | 53 | *((volatile unsigned int *)(addr)) += offset; // add offset to correct all GOT |
| paul@18 | 54 | |
| paul@18 | 55 | /* The actual work. */ |
| paul@18 | 56 | |
| paul@9 | 57 | gpio_init2(); |
| paul@9 | 58 | cpm_init(); |
| paul@9 | 59 | rtc_init(); |
| paul@9 | 60 | timer_init(); |
| paul@15 | 61 | lcd_init(); |
| paul@6 | 62 | } |
