| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2012 Ian McKellar |
| 3 | * Copyright (c) 2013 Travis Geiselbrecht |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining |
| 6 | * a copy of this software and associated documentation files |
| 7 | * (the "Software"), to deal in the Software without restriction, |
| 8 | * including without limitation the rights to use, copy, modify, merge, |
| 9 | * publish, distribute, sublicense, and/or sell copies of the Software, |
| 10 | * and to permit persons to whom the Software is furnished to do so, |
| 11 | * subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be |
| 14 | * included in all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 17 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 19 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 20 | * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 21 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 22 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #include <err.h> |
| 26 | #include <stdio.h> |
| 27 | #include <debug.h> |
| 28 | #include <platform.h> |
| 29 | #include <dev/usb.h> |
| 30 | #include <arch/arm/cm.h> |
| 31 | |
| 32 | #include "ti_driverlib.h" |
| 33 | |
| 34 | |
| 35 | void stellaris_debug_early_init(void); |
| 36 | void stellaris_debug_init(void); |
| 37 | |
| 38 | void stellaris_gpio_early_init(void); |
| 39 | void stellaris_gpio_init(void); |
| 40 | |
| 41 | void stellaris_usbc_early_init(void); |
| 42 | void stellaris_usbc_init(void); |
| 43 | |
| 44 | void platform_early_init(void) |
| 45 | { |
| 46 | // |
| 47 | // Enable lazy stacking for interrupt handlers. This allows floating-point |
| 48 | // instructions to be used within interrupt handlers, but at the expense of |
| 49 | // extra stack usage. |
| 50 | // |
| 51 | // FPULazyStackingEnable(); |
| 52 | |
| 53 | // |
| 54 | // Set the clocking to run directly from the crystal. |
| 55 | // |
| 56 | SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_XTAL_16MHZ | SYSCTL_OSC_MAIN); |
| 57 | |
| 58 | // start the generic systick timer |
| 59 | arm_cm_systick_init(SysCtlClockGet()); |
| 60 | |
| 61 | stellaris_gpio_early_init(); |
| 62 | |
| 63 | stellaris_debug_early_init(); |
| 64 | |
| 65 | stellaris_usbc_early_init(); |
| 66 | } |
| 67 | |
| 68 | void platform_init(void) |
| 69 | { |
| 70 | stellaris_gpio_init(); |
| 71 | stellaris_debug_init(); |
| 72 | stellaris_usbc_init(); |
| 73 | |
| 74 | // print device information |
| 75 | printf("raw revision registers: 0x%lx 0x%lx\n", HWREG(SYSCTL_DID0), HWREG(SYSCTL_DID1)); |
| 76 | |
| 77 | printf("stellaris device class: "); |
| 78 | if (CLASS_IS_SANDSTORM) printf("sandstorm"); |
| 79 | if (CLASS_IS_FURY) printf("fury"); |
| 80 | if (CLASS_IS_DUSTDEVIL) printf("dustdevil"); |
| 81 | if (CLASS_IS_TEMPEST) printf("tempst"); |
| 82 | if (CLASS_IS_FIRESTORM) printf("firestorm"); |
| 83 | if (CLASS_IS_BLIZZARD) printf("blizzard"); |
| 84 | printf("\n"); |
| 85 | |
| 86 | printf("revision register: "); |
| 87 | uint rev = (HWREG(SYSCTL_DID0) & SYSCTL_DID0_MAJ_M) >> 8; |
| 88 | printf("%c", rev + 'A'); |
| 89 | printf("%ld", HWREG(SYSCTL_DID0) & (SYSCTL_DID0_MIN_M)); |
| 90 | printf("\n"); |
| 91 | |
| 92 | } |
| 93 | |
| 94 | // vim: set ts=4 sw=4 noexpandtab: |