| Travis Geiselbrecht | 1d0df69 | 2008-09-01 02:26:09 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2008 Travis Geiselbrecht |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining |
| 5 | * a copy of this software and associated documentation files |
| 6 | * (the "Software"), to deal in the Software without restriction, |
| 7 | * including without limitation the rights to use, copy, modify, merge, |
| 8 | * publish, distribute, sublicense, and/or sell copies of the Software, |
| 9 | * and to permit persons to whom the Software is furnished to do so, |
| 10 | * subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be |
| 13 | * included in all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 19 | * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 20 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 21 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 22 | */ |
| 23 | |
| 24 | .globl platform_early_init |
| 25 | platform_early_init: |
| 26 | stmdb sp!, {lr} |
| 27 | |
| 28 | /* enable the NRST reset pin */ |
| 29 | ldr r1, =0xfffffd08 |
| 30 | ldr r0, =0xa5000401 |
| 31 | str r0, [r1] |
| 32 | |
| 33 | /* disable watchdog */ |
| 34 | ldr r1, =0xfffffd44 |
| 35 | ldr r0, =0x3fff8fff |
| 36 | str r0, [r1] |
| 37 | |
| 38 | bl init_clock |
| 39 | bl init_48mhz_clock |
| 40 | |
| 41 | /* copy the .data section from ROM to RAM */ |
| 42 | ldr r0, =__rodata_end |
| 43 | ldr r1, =__data_start |
| 44 | ldr r2, =__bss_start |
| 45 | __data_loop: |
| 46 | cmp r1, r2 |
| 47 | ldrlt r3, [r0], #4 |
| 48 | strlt r3, [r1], #4 |
| 49 | blt __data_loop |
| 50 | |
| 51 | bl mux_init |
| 52 | bl ser_init |
| 53 | bl platform_init_interrupts |
| 54 | |
| 55 | ldmia sp!, {lr} |
| 56 | bx lr |