diff options
Diffstat (limited to 'cpu/bf533/serial.c')
| -rw-r--r-- | cpu/bf533/serial.c | 55 |
1 files changed, 28 insertions, 27 deletions
diff --git a/cpu/bf533/serial.c b/cpu/bf533/serial.c index 7b43ffd..6cab5da 100644 --- a/cpu/bf533/serial.c +++ b/cpu/bf533/serial.c @@ -1,7 +1,7 @@ /* * U-boot - serial.c Serial driver for BF533 * - * Copyright (c) 2005 blackfin.uclinux.org + * Copyright (c) 2005-2007 Analog Devices Inc. * * This file is based on * bf533_serial.c: Serial driver for BlackFin BF533 DSP internal UART. @@ -38,8 +38,8 @@ * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA */ #include <common.h> @@ -49,6 +49,7 @@ #include <asm/bitops.h> #include <asm/delay.h> #include <asm/uaccess.h> +#include <asm/io.h> #include "bf533_serial.h" DECLARE_GLOBAL_DATA_PTR; @@ -58,15 +59,16 @@ unsigned long pll_div_fact; void calc_baud(void) { unsigned char i; - int temp; + int temp; + u_long sclk = get_sclk(); - for(i = 0; i < sizeof(baud_table)/sizeof(int); i++) { - temp = CONFIG_SCLK_HZ/(baud_table[i]*8); - if ( temp && 0x1 == 1 ) { + for (i = 0; i < sizeof(baud_table) / sizeof(int); i++) { + temp = sclk / (baud_table[i] * 8); + if ((temp & 0x1) == 1) { temp++; } - temp = temp/2; - hw_baud_table[i].dl_high = (temp >> 8)& 0xFF; + temp = temp / 2; + hw_baud_table[i].dl_high = (temp >> 8) & 0xFF; hw_baud_table[i].dl_low = (temp) & 0xFF; } } @@ -74,6 +76,7 @@ void calc_baud(void) void serial_setbrg(void) { int i; + DECLARE_GLOBAL_DATA_PTR; calc_baud(); @@ -84,29 +87,29 @@ void serial_setbrg(void) /* Enable UART */ *pUART_GCTL |= UART_GCTL_UCEN; - asm("ssync;"); + sync(); /* Set DLAB in LCR to Access DLL and DLH */ ACCESS_LATCH; - asm("ssync;"); + sync(); *pUART_DLL = hw_baud_table[i].dl_low; - asm("ssync;"); + sync(); *pUART_DLH = hw_baud_table[i].dl_high; - asm("ssync;"); + sync(); /* Clear DLAB in LCR to Access THR RBR IER */ ACCESS_PORT_IER; - asm("ssync;"); + sync(); /* Enable ERBFI and ELSI interrupts - * to poll SIC_ISR register*/ + * to poll SIC_ISR register*/ *pUART_IER = UART_IER_ELSI | UART_IER_ERBFI | UART_IER_ETBEI; - asm("ssync;"); + sync(); /* Set LCR to Word Lengh 8-bit word select */ *pUART_LCR = UART_LCR_WLS8; - asm("ssync;"); + sync(); return; } @@ -119,8 +122,7 @@ int serial_init(void) void serial_putc(const char c) { - if ((*pUART_LSR) & UART_LSR_TEMT) - { + if ((*pUART_LSR) & UART_LSR_TEMT) { if (c == '\n') serial_putc('\r'); @@ -148,17 +150,16 @@ int serial_getc(void) int ret; /* Poll for RX Interrupt */ - while (!((isr_val = *(volatile unsigned long *)SIC_ISR) & IRQ_UART_RX_BIT)); + while (!((isr_val = + *(volatile unsigned long *)SIC_ISR) & IRQ_UART_RX_BIT)) ; asm("csync;"); uart_lsr_val = *pUART_LSR; /* Clear status bit */ uart_rbr_val = *pUART_RBR; /* getc() */ if (isr_val & IRQ_UART_ERROR_BIT) { - ret = -1; - } - else - { + ret = -1; + } else { ret = uart_rbr_val & 0xff; } @@ -180,10 +181,10 @@ static void local_put_char(char ch) save_and_cli(flags); /* Poll for TX Interruput */ - while (!((isr_val = *pSIC_ISR) & IRQ_UART_TX_BIT)); + while (!((isr_val = *pSIC_ISR) & IRQ_UART_TX_BIT)) ; asm("csync;"); - *pUART_THR = ch; /* putc() */ + *pUART_THR = ch; /* putc() */ if (isr_val & IRQ_UART_ERROR_BIT) { printf("?"); @@ -191,5 +192,5 @@ static void local_put_char(char ch) restore_flags(flags); - return ; + return; } |