[U-Boot] [PATCH 08/13] at91rm9200: move serial shutdown code to serial drivers

Jean-Christophe PLAGNIOL-VILLARD
2009-03-27T22:30:21Z

introduce serial_exit for this purpose. Use it only when the rm9200
serial driver is active

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
cpu/arm920t/at91rm9200/interrupts.c | 13 +++----------
drivers/serial/at91rm9200_usart.c | 5 +++++
include/common.h | 1 +
3 files changed, 9 insertions(+), 10 deletions(-)

diff --git a/cpu/arm920t/at91rm9200/interrupts.c b/cpu/arm920t/at91rm9200/interrupts.c
index 5f0703c..15e22bf 100644
--- a/cpu/arm920t/at91rm9200/interrupts.c
+++ b/cpu/arm920t/at91rm9200/interrupts.c
@@ -166,21 +166,14 @@ ulong get_tbclk (void)
void reset_cpu (ulong ignored)
{

-#ifdef CONFIG_DBGU
- AT91PS_USART us = (AT91PS_USART) AT91C_BASE_DBGU;
-#endif
-#ifdef CONFIG_USART0
- AT91PS_USART us = AT91C_BASE_US0;
-#endif
-#ifdef CONFIG_USART1
- AT91PS_USART us = AT91C_BASE_US1;
-#endif
#ifdef CONFIG_AT91RM9200DK
AT91PS_PIO pio = AT91C_BASE_PIOA;
#endif

+#if defined(CONFIG_AT91RM9200_USART)
/*shutdown the console to avoid strange chars during reset */
- us->US_CR = (AT91C_US_RSTRX | AT91C_US_RSTTX);
+ serial_exit();
+#endif

#ifdef CONFIG_AT91RM9200DK
/* Clear PA19 to trigger the hard reset */
diff --git a/drivers/serial/at91rm9200_usart.c b/drivers/serial/at91rm9200_usart.c
index d563445..858bde9 100644
--- a/drivers/serial/at91rm9200_usart.c
+++ b/drivers/serial/at91rm9200_usart.c
@@ -86,6 +86,11 @@ int serial_init (void)
return (0);
}

+void serial_exit (void)
+{
+ us->US_CR = (AT91C_US_RSTRX | AT91C_US_RSTTX);
+}
+
void serial_putc (const char c)
{
if (c == '\n')
diff --git a/include/common.h b/include/common.h
index 952ddff..43068e6 100644
--- a/include/common.h
+++ b/include/common.h
@@ -453,6 +453,7 @@ void ft_pci_setup(void *blob, bd_t *bd);

/* $(CPU)/serial.c */
int serial_init (void);
+void serial_exit (void);
void serial_addr (unsigned int);
void serial_setbrg (void);
void serial_putc (const char);
--
1.6.2.1