23 lines
359 B
C
23 lines
359 B
C
#include "uart.h"
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#include <libboot/devtree/devtree.h>
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volatile uint32_t* output = NULL;
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void uart_init()
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{
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devtree_entry_t* dev = devtree_find_device("uart");
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if (!dev) {
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return;
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}
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output = (uint32_t*)dev->region_base;
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}
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int uart_write(uint8_t data)
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{
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if (!output) {
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return 1;
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}
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*output = data;
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return 0;
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} |