vhaudiquet/u-boot-krane
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

serial/serial_arc: Implement debug serial

Browse Source 
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
This commit is contained in:
Alexey Brodkin
2018-05-24 15:59:17 +03:00
parent d7ac185fd8
commit 54705016ba
2 changed files with 35 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/serial/serial_arc.c
+26
View File
@@ -130,3 +130,29 @@ U_BOOT_DRIVER(serial_arc) = {
.ops = &arc_serial_ops,
.flags = DM_FLAG_PRE_RELOC,
};
#ifdef CONFIG_DEBUG_ARC_SERIAL
#include <debug_uart.h>
static inline void _debug_uart_init(void)
{
struct arc_serial_regs *regs = (struct arc_serial_regs *)CONFIG_DEBUG_UART_BASE;
int arc_console_baud = CONFIG_DEBUG_UART_CLOCK / (CONFIG_BAUDRATE * 4) - 1;
writeb(arc_console_baud & 0xff, &regs->baudl);
writeb((arc_console_baud & 0xff00) >> 8, &regs->baudh);
}
static inline void _debug_uart_putc(int c)
{
struct arc_serial_regs *regs = (struct arc_serial_regs *)CONFIG_DEBUG_UART_BASE;
while (!(readb(&regs->status) & UART_TXEMPTY))
;
writeb(c, &regs->data);
}
DEBUG_UART_FUNCS
#endif