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[GSoC] [ARM] Patch by Johannes Wischert.

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Add UART initialization for OMAP. uncomment polling wait loops.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32317 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
François Revol
2009-08-13 14:56:40 +00:00
parent 160b539f04
commit b927aacaf9
1 changed files with 20 additions and 16 deletions
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src/system/boot/arch/arm/uart.c
+20 -16
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@@ -113,18 +113,22 @@ void uart_init_port(int port, uint baud)
void uart_init_early(void)
{
#warning INTITIALIZE UART!!!!!
#if BOARD_CPU_OMAP3
/* UART1 */
// RMWREG32(CKEN1, 13, 1, 1),
// RMWREG32(CM_ICLKEN1_CORE, 13, 1, 1),
RMWREG32(CM_FCLKEN1_CORE, 13, 1, 1);
RMWREG32(CM_ICLKEN1_CORE, 13, 1, 1);
/* UART2 */
// RMWREG32(CM_FCLKEN1_CORE, 14, 1, 1),
// RMWREG32(CM_ICLKEN1_CORE, 14, 1, 1),
RMWREG32(CM_FCLKEN1_CORE, 14, 1, 1);
RMWREG32(CM_ICLKEN1_CORE, 14, 1, 1);
/* UART3 */
// RMWREG32(CM_FCLKEN_PER, 11, 1, 1),
// RMWREG32(CM_ICLKEN_PER, 11, 1, 1),
RMWREG32(CM_FCLKEN_PER, 11, 1, 1);
RMWREG32(CM_ICLKEN_PER, 11, 1, 1);
#else
#warning INTITIALIZE UART!!!!!
#endif
uart_init_port(DEBUG_UART, 115200);
}
@@ -136,21 +140,21 @@ void uart_init(void)
int uart_putc(int port, char c )
{
// while (!(read_uart_reg(port, UART_LSR) & (1<<6))) // wait for the last char to get out
// ;
while (!(read_uart_reg(port, UART_LSR) & (1<<6))) // wait for the last char to get out
;
write_uart_reg(port, UART_THR, c);
return 0;
}
int uart_getc(int port, bool wait) /* returns -1 if no data available */
{
// if (wait) {
// while (!(read_uart_reg(port, UART_LSR) & (1<<0))) // wait for data to show up in the rx fifo
// ;
// } else {
// if (!(read_uart_reg(port, UART_LSR) & (1<<0)))
// return -1;
// }
if (wait) {
while (!(read_uart_reg(port, UART_LSR) & (1<<0))) // wait for data to show up in the rx fifo
;
} else {
if (!(read_uart_reg(port, UART_LSR) & (1<<0)))
return -1;
}
return read_uart_reg(port, UART_RHR);
}