diff options
| author | Richard Qin <richard.qin.x@gmail.com> | 2026-04-14 22:47:15 +0800 |
|---|---|---|
| committer | Richard Qin <richard.qin.x@gmail.com> | 2026-04-14 22:47:15 +0800 |
| commit | ac9741e12222e72bad3414bc6f588e70a3d130cc (patch) | |
| tree | 6aace9f63a2ea54c7c3fd1e49e98ff81b638296f /src/drivers/uart.cc | |
| parent | 1e862099a13266da57ff7c6de11c1a11c42a8112 (diff) | |
| download | lume-ac9741e12222e72bad3414bc6f588e70a3d130cc.tar.gz lume-ac9741e12222e72bad3414bc6f588e70a3d130cc.tar.xz | |
feat: implement FDT-based memory discovery and add comprehensive debug logging to exec syscalls
Diffstat (limited to 'src/drivers/uart.cc')
| -rw-r--r-- | src/drivers/uart.cc | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/src/drivers/uart.cc b/src/drivers/uart.cc index 96ae182..397a402 100644 --- a/src/drivers/uart.cc +++ b/src/drivers/uart.cc @@ -40,29 +40,29 @@ namespace Drivers uart_rx.w = 0; // Disable interrupts and configure - *(volatile uint8 *)(UART0 + IER) = 0x00; + *(volatile uint8 *)(uart_base() + IER) = 0x00; // Enter baud rate setting mode (LCR_DLAB) = 0x80; - *(volatile uint8 *)(UART0 + LCR) = 0x80; - *(volatile uint8 *)(UART0 + 0) = 0x03; // DLL: 38.4K baud - *(volatile uint8 *)(UART0 + 1) = 0x00; // DLM + *(volatile uint8 *)(uart_base() + LCR) = 0x80; + *(volatile uint8 *)(uart_base() + 0) = 0x03; // DLL: 38.4K baud + *(volatile uint8 *)(uart_base() + 1) = 0x00; // DLM // Exit baud rate setting, set 8-bit word length, no parity - *(volatile uint8 *)(UART0 + LCR) = 0x03; + *(volatile uint8 *)(uart_base() + LCR) = 0x03; // Reset and enable FIFO - *(volatile uint8 *)(UART0 + FCR) = 0x07; + *(volatile uint8 *)(uart_base() + FCR) = 0x07; // Enable Receive Data Available Interrupt - *(volatile uint8 *)(UART0 + IER) = 0x01; + *(volatile uint8 *)(uart_base() + IER) = 0x01; } void uart_putc(char c) { uart_tx_lock.acquire(); - while ((*(volatile uint8 *)(UART0 + LSR) & LSR_TX_IDLE) == 0) + while ((*(volatile uint8 *)(uart_base() + LSR) & LSR_TX_IDLE) == 0) ; - *(volatile uint8 *)(UART0 + THR) = c; + *(volatile uint8 *)(uart_base() + THR) = c; uart_tx_lock.release(); } @@ -113,10 +113,10 @@ namespace Drivers while (1) { - if ((*(volatile uint8 *)(UART0 + LSR) & LSR_RX_READY) == 0) + if ((*(volatile uint8 *)(uart_base() + LSR) & LSR_RX_READY) == 0) break; - char c = *(volatile uint8 *)(UART0 + RHR); + char c = *(volatile uint8 *)(uart_base() + RHR); uart_rx.buf[uart_rx.w % UART_RX_BUF_SIZE] = c; uart_rx.w++; |