__attribute__((always_inline))
static inline void serial_init(void)
{
+ uint32_t uart_base = UART_DLL;
+
#ifdef __ADSPBF54x__
# ifdef BFIN_BOOT_UART_USE_RTS
# define BFIN_UART_USE_RTS 1
if (BFIN_DEBUG_EARLY_SERIAL) {
int ucen = bfin_read16(&pUART->gctl) & UCEN;
- serial_early_init();
+ serial_early_init(uart_base);
/* If the UART is off, that means we need to program
* the baud rate ourselves initially.
*/
if (ucen != UCEN)
- serial_early_set_baud(CONFIG_BAUDRATE);
+ serial_early_set_baud(uart_base, CONFIG_BAUDRATE);
}
}
static inline void serial_deinit(void)
{
#ifdef __ADSPBF54x__
+ uint32_t uart_base = UART_DLL;
+
if (BFIN_UART_USE_RTS && CONFIG_BFIN_BOOT_MODE == BFIN_BOOT_UART) {
/* clear forced RTS rather than relying on auto RTS */
bfin_write16(&pUART->mcr, bfin_read16(&pUART->mcr) & ~FCPOL);
__attribute__((always_inline))
static inline void serial_putc(char c)
{
+ uint32_t uart_base = UART_DLL;
+
if (!BFIN_DEBUG_EARLY_SERIAL)
return;
unsigned int quotient;
for (quotient = 0; dividend > 0; ++quotient)
dividend -= divisor;
- serial_early_put_div(quotient - ANOMALY_05000230);
+ serial_early_put_div(UART_DLL, quotient - ANOMALY_05000230);
serial_putc('c');
}
#include <common.h>
#include <watchdog.h>
+#include <serial.h>
+#include <linux/compiler.h>
#include <asm/blackfin.h>
#include <asm/mach-common/bits/uart.h>
* tally of all the status bits.
*/
static uint16_t uart_lsr_save;
-static uint16_t uart_lsr_read(void)
+static uint16_t uart_lsr_read(uint32_t uart_base)
{
uint16_t lsr = bfin_read16(&pUART->lsr);
uart_lsr_save |= (lsr & (OE|PE|FE|BI));
return lsr | uart_lsr_save;
}
/* Just do the clear for everyone since it can't hurt. */
-static void uart_lsr_clear(void)
+static void uart_lsr_clear(uint32_t uart_base)
{
uart_lsr_save = 0;
bfin_write16(&pUART->lsr, bfin_read16(&pUART->lsr) | -1);
* bits get set/cleared, we don't really care since we don't read them
* anyways (and thus anomaly 05000099 is irrelevant).
*/
-static uint16_t uart_lsr_read(void)
+static inline uint16_t uart_lsr_read(uint32_t uart_base)
{
return bfin_read16(&pUART->lsr);
}
-static void uart_lsr_clear(void)
+static void uart_lsr_clear(uint32_t uart_base)
{
bfin_write16(&pUART->lsr, bfin_read16(&pUART->lsr) | -1);
}
#endif
-/* Symbol for our assembly to call. */
-void serial_set_baud(uint32_t baud)
-{
- serial_early_set_baud(baud);
-}
-
-/* Symbol for common u-boot code to call.
- * Setup the baudrate (brg: baudrate generator).
- */
-void serial_setbrg(void)
-{
- serial_set_baud(gd->baudrate);
-}
-
-/* Symbol for our assembly to call. */
-void serial_initialize(void)
-{
- serial_early_init();
-}
-
-/* Symbol for common u-boot code to call. */
-int serial_init(void)
-{
- serial_initialize();
- serial_setbrg();
- uart_lsr_clear();
- return 0;
-}
-
-void serial_putc(const char c)
+static void uart_putc(uint32_t uart_base, const char c)
{
/* send a \r for compatibility */
if (c == '\n')
WATCHDOG_RESET();
/* wait for the hardware fifo to clear up */
- while (!(uart_lsr_read() & THRE))
+ while (!(uart_lsr_read(uart_base) & THRE))
continue;
/* queue the character for transmission */
WATCHDOG_RESET();
}
-int serial_tstc(void)
+static int uart_tstc(uint32_t uart_base)
{
WATCHDOG_RESET();
- return (uart_lsr_read() & DR) ? 1 : 0;
+ return (uart_lsr_read(uart_base) & DR) ? 1 : 0;
}
-int serial_getc(void)
+static int uart_getc(uint32_t uart_base)
{
uint16_t uart_rbr_val;
/* wait for data ! */
- while (!serial_tstc())
+ while (!uart_tstc(uart_base))
continue;
/* grab the new byte */
#ifdef CONFIG_DEBUG_SERIAL
/* grab & clear the LSR */
- uint16_t uart_lsr_val = uart_lsr_read();
+ uint16_t uart_lsr_val = uart_lsr_read(uart_base);
cached_lsr[cache_count] = uart_lsr_val;
cached_rbr[cache_count] = uart_rbr_val;
return -1;
}
#endif
- uart_lsr_clear();
+ uart_lsr_clear(uart_base);
return uart_rbr_val;
}
+#ifdef CONFIG_SYS_BFIN_UART
+
+static void uart_puts(uint32_t uart_base, const char *s)
+{
+ while (*s)
+ uart_putc(uart_base, *s++);
+}
+
+#define DECL_BFIN_UART(n) \
+static int uart##n##_init(void) \
+{ \
+ const unsigned short pins[] = { _P_UART(n, RX), _P_UART(n, TX), 0, }; \
+ peripheral_request_list(pins, "bfin-uart"); \
+ uart_init(MMR_UART(n)); \
+ serial_early_set_baud(MMR_UART(n), gd->baudrate); \
+ uart_lsr_clear(MMR_UART(n)); \
+ return 0; \
+} \
+\
+static int uart##n##_uninit(void) \
+{ \
+ return serial_early_uninit(MMR_UART(n)); \
+} \
+\
+static void uart##n##_setbrg(void) \
+{ \
+ serial_early_set_baud(MMR_UART(n), gd->baudrate); \
+} \
+\
+static int uart##n##_getc(void) \
+{ \
+ return uart_getc(MMR_UART(n)); \
+} \
+\
+static int uart##n##_tstc(void) \
+{ \
+ return uart_tstc(MMR_UART(n)); \
+} \
+\
+static void uart##n##_putc(const char c) \
+{ \
+ uart_putc(MMR_UART(n), c); \
+} \
+\
+static void uart##n##_puts(const char *s) \
+{ \
+ uart_puts(MMR_UART(n), s); \
+} \
+\
+struct serial_device bfin_serial##n##_device = { \
+ .name = "bfin_uart"#n, \
+ .init = uart##n##_init, \
+ .uninit = uart##n##_uninit, \
+ .setbrg = uart##n##_setbrg, \
+ .getc = uart##n##_getc, \
+ .tstc = uart##n##_tstc, \
+ .putc = uart##n##_putc, \
+ .puts = uart##n##_puts, \
+};
+
+#ifdef UART0_DLL
+DECL_BFIN_UART(0)
+#endif
+#ifdef UART1_DLL
+DECL_BFIN_UART(1)
+#endif
+#ifdef UART2_DLL
+DECL_BFIN_UART(2)
+#endif
+#ifdef UART3_DLL
+DECL_BFIN_UART(3)
+#endif
+
+__weak struct serial_device *default_serial_console(void)
+{
+#if CONFIG_UART_CONSOLE == 0
+ return &bfin_serial0_device;
+#elif CONFIG_UART_CONSOLE == 1
+ return &bfin_serial1_device;
+#elif CONFIG_UART_CONSOLE == 2
+ return &bfin_serial2_device;
+#elif CONFIG_UART_CONSOLE == 3
+ return &bfin_serial3_device;
+#endif
+}
+
+void serial_register_bfin_uart(void)
+{
+#ifdef UART0_DLL
+ serial_register(&bfin_serial0_device);
+#endif
+#ifdef UART1_DLL
+ serial_register(&bfin_serial1_device);
+#endif
+#ifdef UART2_DLL
+ serial_register(&bfin_serial2_device);
+#endif
+#ifdef UART3_DLL
+ serial_register(&bfin_serial3_device);
+#endif
+}
+
+#else
+
+/* Symbol for our assembly to call. */
+void serial_set_baud(uint32_t baud)
+{
+ serial_early_set_baud(UART_DLL, baud);
+}
+
+/* Symbol for common u-boot code to call.
+ * Setup the baudrate (brg: baudrate generator).
+ */
+void serial_setbrg(void)
+{
+ serial_set_baud(gd->baudrate);
+}
+
+/* Symbol for our assembly to call. */
+void serial_initialize(void)
+{
+ serial_early_init(UART_DLL);
+}
+
+/* Symbol for common u-boot code to call. */
+int serial_init(void)
+{
+ serial_initialize();
+ serial_setbrg();
+ uart_lsr_clear(UART_DLL);
+ return 0;
+}
+
+int serial_tstc(void)
+{
+ return uart_tstc(UART_DLL);
+}
+
+int serial_getc(void)
+{
+ return uart_getc(UART_DLL);
+}
+
+void serial_putc(const char c)
+{
+ uart_putc(UART_DLL, c);
+}
+
void serial_puts(const char *s)
{
while (*s)
}
#endif
+
+#endif
#define __PASTE_UART(num, pfx, sfx) pfx##num##_##sfx
#define _PASTE_UART(num, pfx, sfx) __PASTE_UART(num, pfx, sfx)
-#define MMR_UART(mmr) _PASTE_UART(CONFIG_UART_CONSOLE, UART, DLL)
-#define P_UART(pin) _PASTE_UART(CONFIG_UART_CONSOLE, P_UART, pin)
+#define MMR_UART(n) _PASTE_UART(n, UART, DLL)
+#define _P_UART(n, pin) _PASTE_UART(n, P_UART, pin)
+#define P_UART(pin) _P_UART(CONFIG_UART_CONSOLE, pin)
#ifndef UART_DLL
-# define UART_DLL MMR_UART(DLL)
+# define UART_DLL MMR_UART(CONFIG_UART_CONSOLE)
#else
+# define UART0_DLL UART_DLL
# if CONFIG_UART_CONSOLE != 0
# error CONFIG_UART_CONSOLE must be 0 on parts with only one UART
# endif
#endif
-#define pUART ((volatile struct bfin_mmr_serial *)UART_DLL)
+#define pUART ((volatile struct bfin_mmr_serial *)uart_base)
#if BFIN_UART_HW_VER == 2
# define ACCESS_LATCH()
}
__attribute__((always_inline))
-static inline void serial_early_init(void)
+static inline int uart_init(uint32_t uart_base)
{
- /* handle portmux crap on different Blackfins */
- serial_do_portmux();
-
/* always enable UART -- avoids anomalies 05000309 and 05000350 */
bfin_write16(&pUART->gctl, UCEN);
bfin_write16(&pUART->lcr, WLS_8);
SSYNC();
+
+ return 0;
}
__attribute__((always_inline))
-static inline void serial_early_put_div(uint16_t divisor)
+static inline int serial_early_init(uint32_t uart_base)
+{
+ /* handle portmux crap on different Blackfins */
+ serial_do_portmux();
+
+ return uart_init(uart_base);
+}
+
+__attribute__((always_inline))
+static inline int serial_early_uninit(uint32_t uart_base)
+{
+ /* disable the UART by clearing UCEN */
+ bfin_write16(&pUART->gctl, 0);
+
+ return 0;
+}
+
+__attribute__((always_inline))
+static inline void serial_early_put_div(uint32_t uart_base, uint16_t divisor)
{
/* Set DLAB in LCR to Access DLL and DLH */
ACCESS_LATCH();
__attribute__((always_inline))
static inline uint16_t serial_early_get_div(void)
{
+ uint32_t uart_base = UART_DLL;
+
/* Set DLAB in LCR to Access DLL and DLH */
ACCESS_LATCH();
SSYNC();
#endif
__attribute__((always_inline))
-static inline void serial_early_set_baud(uint32_t baud)
+static inline void serial_early_set_baud(uint32_t uart_base, uint32_t baud)
{
/* Translate from baud into divisor in terms of SCLK. The
* weird multiplication is to make sure we over sample just
* a little rather than under sample the incoming signals.
*/
- serial_early_put_div((get_sclk() + (baud * 8)) / (baud * 16) - ANOMALY_05000230);
+ serial_early_put_div(uart_base,
+ (get_sclk() + (baud * 8)) / (baud * 16) - ANOMALY_05000230);
}
#ifndef BFIN_IN_INITCODE
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