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https://github.com/brain-hackers/u-boot-brain
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48cbc3a876
CONFIG_NS16550_MIN_FUNCTIONS is used by small SPLs to gain access to basic ns16550 output code without pulling in things not needed by the SPL. This previously only worked with non-MULTI configs. Recently MULTI was made mandatory, and MIN_FUNCTIONS fails like this: drivers/serial/libserial.o: In function `calc_divisor.clone.0': serial_ns16550.c:(.text.calc_divisor.clone.0+0x24): undefined reference to `get_bus_freq' drivers/serial/libserial.o: In function `_serial_getc': (.text._serial_getc+0x30): undefined reference to `NS16550_getc' drivers/serial/libserial.o: In function `_serial_tstc': (.text._serial_tstc+0x30): undefined reference to `NS16550_tstc' drivers/serial/libserial.o: In function `_serial_setbrg': (.text._serial_setbrg+0x3c): undefined reference to `NS16550_reinit' make[1]: *** [/tmp/u-boot/spl/u-boot-spl] Error 1 make: *** [/tmp/u-boot/spl/u-boot-spl.bin] Error 2 With MIN_FUNCTIONS we don't need anything from this file, so don't build it. The conditional needs to be in the file itself rather than the makefile, because the config symbols are only imported to the makefiles once, not separately for the SPL phase of the build. Signed-off-by: Scott Wood <scottwood@freescale.com>
311 lines
7.3 KiB
C
311 lines
7.3 KiB
C
/*
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* (C) Copyright 2000
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* Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <linux/compiler.h>
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#include <ns16550.h>
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#ifdef CONFIG_NS87308
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#include <ns87308.h>
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#endif
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#include <serial.h>
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#ifndef CONFIG_NS16550_MIN_FUNCTIONS
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DECLARE_GLOBAL_DATA_PTR;
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#if !defined(CONFIG_CONS_INDEX)
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#elif (CONFIG_CONS_INDEX < 1) || (CONFIG_CONS_INDEX > 6)
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#error "Invalid console index value."
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#endif
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#if CONFIG_CONS_INDEX == 1 && !defined(CONFIG_SYS_NS16550_COM1)
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#error "Console port 1 defined but not configured."
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#elif CONFIG_CONS_INDEX == 2 && !defined(CONFIG_SYS_NS16550_COM2)
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#error "Console port 2 defined but not configured."
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#elif CONFIG_CONS_INDEX == 3 && !defined(CONFIG_SYS_NS16550_COM3)
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#error "Console port 3 defined but not configured."
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#elif CONFIG_CONS_INDEX == 4 && !defined(CONFIG_SYS_NS16550_COM4)
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#error "Console port 4 defined but not configured."
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#elif CONFIG_CONS_INDEX == 5 && !defined(CONFIG_SYS_NS16550_COM5)
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#error "Console port 5 defined but not configured."
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#elif CONFIG_CONS_INDEX == 6 && !defined(CONFIG_SYS_NS16550_COM6)
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#error "Console port 6 defined but not configured."
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#endif
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/* Note: The port number specified in the functions is 1 based.
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* the array is 0 based.
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*/
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static NS16550_t serial_ports[6] = {
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#ifdef CONFIG_SYS_NS16550_COM1
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(NS16550_t)CONFIG_SYS_NS16550_COM1,
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#else
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NULL,
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#endif
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#ifdef CONFIG_SYS_NS16550_COM2
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(NS16550_t)CONFIG_SYS_NS16550_COM2,
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#else
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NULL,
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#endif
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#ifdef CONFIG_SYS_NS16550_COM3
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(NS16550_t)CONFIG_SYS_NS16550_COM3,
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#else
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NULL,
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#endif
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#ifdef CONFIG_SYS_NS16550_COM4
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(NS16550_t)CONFIG_SYS_NS16550_COM4,
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#else
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NULL,
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#endif
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#ifdef CONFIG_SYS_NS16550_COM5
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(NS16550_t)CONFIG_SYS_NS16550_COM5,
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#else
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NULL,
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#endif
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#ifdef CONFIG_SYS_NS16550_COM6
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(NS16550_t)CONFIG_SYS_NS16550_COM6
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#else
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NULL
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#endif
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};
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#define PORT serial_ports[port-1]
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/* Multi serial device functions */
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#define DECLARE_ESERIAL_FUNCTIONS(port) \
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static int eserial##port##_init(void) \
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{ \
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int clock_divisor; \
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clock_divisor = calc_divisor(serial_ports[port-1]); \
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NS16550_init(serial_ports[port-1], clock_divisor); \
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return 0 ; \
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} \
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static void eserial##port##_setbrg(void) \
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{ \
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serial_setbrg_dev(port); \
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} \
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static int eserial##port##_getc(void) \
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{ \
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return serial_getc_dev(port); \
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} \
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static int eserial##port##_tstc(void) \
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{ \
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return serial_tstc_dev(port); \
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} \
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static void eserial##port##_putc(const char c) \
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{ \
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serial_putc_dev(port, c); \
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} \
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static void eserial##port##_puts(const char *s) \
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{ \
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serial_puts_dev(port, s); \
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}
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/* Serial device descriptor */
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#define INIT_ESERIAL_STRUCTURE(port, __name) { \
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.name = __name, \
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.start = eserial##port##_init, \
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.stop = NULL, \
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.setbrg = eserial##port##_setbrg, \
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.getc = eserial##port##_getc, \
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.tstc = eserial##port##_tstc, \
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.putc = eserial##port##_putc, \
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.puts = eserial##port##_puts, \
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}
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static int calc_divisor (NS16550_t port)
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{
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#ifdef CONFIG_OMAP1510
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/* If can't cleanly clock 115200 set div to 1 */
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if ((CONFIG_SYS_NS16550_CLK == 12000000) && (gd->baudrate == 115200)) {
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port->osc_12m_sel = OSC_12M_SEL; /* enable 6.5 * divisor */
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return (1); /* return 1 for base divisor */
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}
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port->osc_12m_sel = 0; /* clear if previsouly set */
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#endif
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#ifdef CONFIG_OMAP1610
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/* If can't cleanly clock 115200 set div to 1 */
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if ((CONFIG_SYS_NS16550_CLK == 48000000) && (gd->baudrate == 115200)) {
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return (26); /* return 26 for base divisor */
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}
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#endif
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#ifdef CONFIG_APTIX
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#define MODE_X_DIV 13
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#else
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#define MODE_X_DIV 16
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#endif
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/* Compute divisor value. Normally, we should simply return:
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* CONFIG_SYS_NS16550_CLK) / MODE_X_DIV / gd->baudrate
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* but we need to round that value by adding 0.5.
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* Rounding is especially important at high baud rates.
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*/
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return (CONFIG_SYS_NS16550_CLK + (gd->baudrate * (MODE_X_DIV / 2))) /
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(MODE_X_DIV * gd->baudrate);
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}
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void
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_serial_putc(const char c,const int port)
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{
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if (c == '\n')
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NS16550_putc(PORT, '\r');
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NS16550_putc(PORT, c);
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}
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void
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_serial_putc_raw(const char c,const int port)
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{
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NS16550_putc(PORT, c);
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}
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void
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_serial_puts (const char *s,const int port)
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{
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while (*s) {
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_serial_putc (*s++,port);
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}
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}
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int
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_serial_getc(const int port)
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{
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return NS16550_getc(PORT);
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}
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int
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_serial_tstc(const int port)
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{
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return NS16550_tstc(PORT);
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}
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void
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_serial_setbrg (const int port)
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{
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int clock_divisor;
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clock_divisor = calc_divisor(PORT);
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NS16550_reinit(PORT, clock_divisor);
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}
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static inline void
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serial_putc_dev(unsigned int dev_index,const char c)
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{
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_serial_putc(c,dev_index);
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}
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static inline void
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serial_putc_raw_dev(unsigned int dev_index,const char c)
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{
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_serial_putc_raw(c,dev_index);
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}
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static inline void
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serial_puts_dev(unsigned int dev_index,const char *s)
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{
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_serial_puts(s,dev_index);
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}
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static inline int
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serial_getc_dev(unsigned int dev_index)
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{
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return _serial_getc(dev_index);
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}
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static inline int
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serial_tstc_dev(unsigned int dev_index)
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{
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return _serial_tstc(dev_index);
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}
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static inline void
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serial_setbrg_dev(unsigned int dev_index)
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{
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_serial_setbrg(dev_index);
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}
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DECLARE_ESERIAL_FUNCTIONS(1);
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struct serial_device eserial1_device =
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INIT_ESERIAL_STRUCTURE(1, "eserial0");
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DECLARE_ESERIAL_FUNCTIONS(2);
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struct serial_device eserial2_device =
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INIT_ESERIAL_STRUCTURE(2, "eserial1");
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DECLARE_ESERIAL_FUNCTIONS(3);
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struct serial_device eserial3_device =
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INIT_ESERIAL_STRUCTURE(3, "eserial2");
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DECLARE_ESERIAL_FUNCTIONS(4);
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struct serial_device eserial4_device =
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INIT_ESERIAL_STRUCTURE(4, "eserial3");
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DECLARE_ESERIAL_FUNCTIONS(5);
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struct serial_device eserial5_device =
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INIT_ESERIAL_STRUCTURE(5, "eserial4");
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DECLARE_ESERIAL_FUNCTIONS(6);
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struct serial_device eserial6_device =
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INIT_ESERIAL_STRUCTURE(6, "eserial5");
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__weak struct serial_device *default_serial_console(void)
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{
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#if CONFIG_CONS_INDEX == 1
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return &eserial1_device;
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#elif CONFIG_CONS_INDEX == 2
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return &eserial2_device;
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#elif CONFIG_CONS_INDEX == 3
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return &eserial3_device;
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#elif CONFIG_CONS_INDEX == 4
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return &eserial4_device;
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#elif CONFIG_CONS_INDEX == 5
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return &eserial5_device;
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#elif CONFIG_CONS_INDEX == 6
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return &eserial6_device;
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#else
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#error "Bad CONFIG_CONS_INDEX."
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#endif
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}
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void ns16550_serial_initialize(void)
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{
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#if defined(CONFIG_SYS_NS16550_COM1)
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serial_register(&eserial1_device);
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#endif
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#if defined(CONFIG_SYS_NS16550_COM2)
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serial_register(&eserial2_device);
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#endif
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#if defined(CONFIG_SYS_NS16550_COM3)
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serial_register(&eserial3_device);
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#endif
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#if defined(CONFIG_SYS_NS16550_COM4)
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serial_register(&eserial4_device);
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#endif
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#if defined(CONFIG_SYS_NS16550_COM5)
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serial_register(&eserial5_device);
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#endif
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#if defined(CONFIG_SYS_NS16550_COM6)
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serial_register(&eserial6_device);
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#endif
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}
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#endif /* !CONFIG_NS16550_MIN_FUNCTIONS */
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