URL
https://opencores.org/ocsvn/neorv32/neorv32/trunk
Subversion Repositories neorv32
Compare Revisions
- This comparison shows the changes necessary to convert path
/neorv32/trunk/sw/bootloader
- from Rev 59 to Rev 60
- ↔ Reverse comparison
Rev 59 → Rev 60
/bootloader.c
2,9 → 2,10
// # << NEORV32 - Bootloader >> # |
// # ********************************************************************************************* # |
// # In order to run the bootloader on *any* CPU configuration, the bootloader should be compiled # |
// # unsing the base ISA (rv32i/rv32e) only. # |
// # using the base ISA (rv32i/rv32e) only. # |
// # ********************************************************************************************* # |
// # Boot from (internal) instruction memory, UART or SPI Flash. # |
// # Bootloader executables (neorv32_exe.bin) are LITTLE-ENDIAN! # |
// # # |
// # The bootloader uses the primary UART (UART0) for user console interface. # |
// # # |
226,7 → 227,7
// Configure machine system timer interrupt for ~2Hz |
neorv32_mtime_set_timecmp(neorv32_mtime_get_time() + (clock_speed/4)); |
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// confiure trap handler (bare-metal, no neorv32 rte available) |
// configure trap handler (bare-metal, no neorv32 rte available) |
neorv32_cpu_csr_write(CSR_MTVEC, (uint32_t)(&bootloader_trap_handler)); |
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// active timer IRQ |
250,7 → 251,7
neorv32_uart_print("\n"); |
start_app(); |
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return 0; |
return 1; // bootloader should never return |
#endif |
|
|
343,7 → 344,7
} |
} |
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return 0; // bootloader should never return |
return 1; // bootloader should never return |
} |
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|
599,10 → 600,10
uint32_t i; |
for (i=0; i<4; i++) { |
if (src == EXE_STREAM_UART) { |
data.uint8[3-i] = (uint8_t)neorv32_uart_getc(); |
data.uint8[i] = (uint8_t)neorv32_uart_getc(); |
} |
else { |
data.uint8[3-i] = spi_flash_read_byte(addr + i); |
data.uint8[i] = spi_flash_read_byte(addr + i); |
} |
} |
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712,7 → 713,7
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int i; |
for (i=0; i<4; i++) { |
spi_flash_write_byte(addr + i, data.uint8[3-i]); |
spi_flash_write_byte(addr + i, data.uint8[i]); |
} |
} |
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