fix fsbl and opensbi serial ports print baud --form https://community.milkv.io/t/set-the-baud-rate-to-115200-before-uboot/959

2023-12-24 15:13:30 +08:00
parent ab1c239a02
commit 3dad3aa6f0
2 changed files with 27 additions and 1 deletions
--- a/opensbi/lib/utils/serial/uart8250.c
+++ b/opensbi/lib/utils/serial/uart8250.c
@ -101,7 +101,7 @@ int uart8250_init(unsigned long base, u32 in_freq, u32 baudrate, u32 reg_shift,
 	uart8250_in_freq   = in_freq;
 	uart8250_baudrate  = baudrate;

-	bdiv = uart8250_in_freq / (16 * uart8250_baudrate);
+	bdiv = (uart8250_in_freq + 8 * uart8250_baudrate) / (16 * uart8250_baudrate);

 	/* Disable all interrupts */
 	set_reg(UART_IER_OFFSET, 0x00);