diff options
| author | Clyne Sullivan <tullivan99@gmail.com> | 2018-10-02 21:26:48 -0400 |
|---|---|---|
| committer | Clyne Sullivan <tullivan99@gmail.com> | 2018-10-02 21:26:48 -0400 |
| commit | c66410f6319284b94e21758539ac25bfb4694d3a (patch) | |
| tree | 73c1ac0da5c6507d4111cf967549184c964552c9 /src/kernel/init.c | |
| parent | 231c796f50ac4dc277978a6568e8083412c765e0 (diff) | |
folder restructure
Diffstat (limited to 'src/kernel/init.c')
| -rw-r--r-- | src/kernel/init.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/kernel/init.c b/src/kernel/init.c new file mode 100644 index 0000000..e4ac115 --- /dev/null +++ b/src/kernel/init.c @@ -0,0 +1,52 @@ +/**
+ * @file init.c
+ * Kernel initialization procedure
+ *
+ * Copyright (C) 2018 Clyne Sullivan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "clock.h"
+#include "gpio.h"
+#include "heap.h"
+#include "task.h"
+#include <arch/stm/stm32l476xx.h>
+
+extern uint8_t __bss_end__;
+
+extern void user_main(void);
+
+int main(void)
+{
+ asm("cpsid i");
+ // disable cached writes for precise debug info
+ //*((uint32_t *)0xE000E008) |= 2;
+
+ // prepare flash latency for 80MHz operation
+ FLASH->ACR &= ~(FLASH_ACR_LATENCY);
+ FLASH->ACR |= FLASH_ACR_LATENCY_4WS;
+
+ // init core components
+ clock_init();
+ heap_init(&__bss_end__);
+ gpio_init();
+
+ // enable FPU
+ //SCB->CPACR |= (0xF << 20);
+
+ task_init(user_main);
+ while (1);
+}
+
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