diff options
Diffstat (limited to 'code/fe310/metal/metal.c')
-rw-r--r-- | code/fe310/metal/metal.c | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/code/fe310/metal/metal.c b/code/fe310/metal/metal.c deleted file mode 100644 index 00849b9..0000000 --- a/code/fe310/metal/metal.c +++ /dev/null @@ -1,34 +0,0 @@ -#include <sys/cdefs.h> - -#include "encoding.h" -#include "platform.h" -#include "prci_driver.h" - -extern void eos_trap_entry(); - -static void uart_init(size_t baud_rate) { - GPIO_REG(GPIO_IOF_SEL) &= ~IOF0_UART0_MASK; - GPIO_REG(GPIO_IOF_EN) |= IOF0_UART0_MASK; - UART0_REG(UART_REG_DIV) = PRCI_get_cpu_freq() / baud_rate - 1; - UART0_REG(UART_REG_TXCTRL) |= UART_TXEN; - UART0_REG(UART_REG_RXCTRL) |= UART_RXEN; -} - -__attribute__((constructor)) -void metal_init(void) { - SPI0_REG(SPI_REG_SCKDIV) = 8; - - PRCI_use_default_clocks(); - PRCI_use_pll(PLL_REFSEL_HFXOSC, 0, 1, 31, 1, -1, -1, -1); - uart_init(115200); - - write_csr(mtvec, &eos_trap_entry); - if (read_csr(misa) & (1 << ('F' - 'A'))) { // if F extension is present - write_csr(mstatus, MSTATUS_FS); // allow FPU instructions without trapping - write_csr(fcsr, 0); // initialize rounding mode, undefined at reset - } -} - -__attribute__((section(".init"))) -void __metal_synchronize_harts() { -} |