| // Copyright 2020 The Pigweed Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| // use this file except in compliance with the License. You may obtain a copy of |
| // the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| // License for the specific language governing permissions and limitations under |
| // the License. |
| |
| #include "pw_boot_armv7m/boot.h" |
| #include "pw_preprocessor/compiler.h" |
| #include "pw_sys_io_baremetal_lm3s6965evb/init.h" |
| |
| void pw_boot_PreStaticMemoryInit() { |
| // Force RCC to be at default at boot. |
| const uint32_t kRccDefault = 0x078E3AD1U; |
| volatile uint32_t* rcc = (volatile uint32_t*)0x400FE070U; |
| *rcc = kRccDefault; |
| const uint32_t kRcc2Default = 0x07802810U; |
| volatile uint32_t* rcc2 = (volatile uint32_t*)0x400FE070U; |
| *rcc2 = kRcc2Default; |
| } |
| |
| void pw_boot_PreStaticConstructorInit() {} |
| |
| void pw_boot_PreMainInit() { pw_sys_io_Init(); } |
| |
| PW_NO_RETURN void pw_boot_PostMain() { |
| // QEMU requires a special command to tell the VM to shut down. |
| volatile uint32_t* aircr = (uint32_t*)(0xE000ED0CU); |
| *aircr = 0x5fa0004; |
| |
| // In case main() returns, just sit here until the device is reset. |
| while (1) { |
| } |
| PW_UNREACHABLE; |
| } |