mirror of
https://github.com/Polprzewodnikowy/SummerCart64.git
synced 2024-11-26 07:34:15 +01:00
41 lines
852 B
C
41 lines
852 B
C
#include "sys.h"
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int reset_handler (void) {
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#ifdef BOOT_UART
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io8_t pointer = &RAM;
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#else
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#ifdef BOOT_N64
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io32_t pointer = &RAM;
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#endif
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#endif
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uint32_t length = 0;
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#ifdef BOOT_UART
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for (int i = 0; i < 4; i++) {
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while (!(UART_SR & UART_SR_RXNE));
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length |= (UART_DR << (i * 8));
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}
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#else
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#ifdef BOOT_N64
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while (!(CFG_SCR & CFG_SCR_BOOTSTRAP_PENDING));
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length = CFG_BOOTSTRAP;
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#endif
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#endif
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while (1) {
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#ifdef BOOT_UART
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while (!(UART_SR & UART_SR_RXNE));
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*pointer++ = UART_DR;
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#else
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#ifdef BOOT_N64
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while (!(CFG_SCR & CFG_SCR_BOOTSTRAP_PENDING));
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*pointer++ = CFG_BOOTSTRAP;
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#endif
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#endif
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if (((uint32_t) pointer) == length) {
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CFG_SCR |= CFG_SCR_CPU_BOOTSTRAPPED;
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__asm__("call 0");
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}
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}
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}
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