4 * Copyright 2003, 2004 Develer S.r.l. (http://www.develer.com/)
5 * Copyright 2000, 2001, 2002 Bernardo Innocenti <bernie@codewiz.org>
6 * This file is part of DevLib - See devlib/README for information.
9 * \brief General pourpose debug support for embedded systems (implementation).
12 * \author Bernardo Innocenti <bernie@develer.com>
13 * \author Stefano Fedrigo <aleph@develer.com>
18 *#* Revision 1.17 2004/10/03 18:41:28 bernie
19 *#* Restore \version header killed by mistake in previous commit.
21 *#* Revision 1.16 2004/10/03 18:40:50 bernie
22 *#* Use new CPU macros.
24 *#* Revision 1.15 2004/09/14 21:03:46 bernie
25 *#* Use debug.h instead of kdebug.h.
27 *#* Revision 1.14 2004/09/06 21:39:56 bernie
28 *#* Allow partial redefinition of BUS macros.
30 *#* Revision 1.13 2004/08/29 22:04:26 bernie
31 *#* Convert 485 macros to generic BUS macros;
32 *#* kputchar(): New public function.
34 *#* Revision 1.12 2004/08/25 14:12:08 rasky
35 *#* Aggiornato il comment block dei log RCS
37 *#* Revision 1.11 2004/08/24 16:19:08 bernie
38 *#* kputchar(): New public function; Add missing dummy inlines for \!_DEBUG.
40 *#* Revision 1.10 2004/08/04 15:57:50 rasky
41 *#* Cambiata la putchar per kdebug per DSP56k: la nuova funzione e' quella piu' a basso livello (assembly)
43 *#* Revision 1.9 2004/08/02 20:20:29 aleph
44 *#* Merge from project_ks
46 *#* Revision 1.8 2004/07/30 14:26:33 rasky
47 *#* Semplificato l'output dell'ASSERT
48 *#* Aggiunta ASSERT2 con stringa di help opzionalmente disattivabile
50 *#* Revision 1.7 2004/07/30 14:15:53 rasky
51 *#* Nuovo supporto unificato per detect della CPU
53 *#* Revision 1.6 2004/07/18 21:49:28 bernie
54 *#* Add ATmega8 support.
56 *#* Revision 1.5 2004/06/27 15:20:26 aleph
57 *#* Change UNUSED() macro to accept two arguments: type and name;
58 *#* Add macro GNUC_PREREQ to detect GCC version during build;
59 *#* Some spacing cleanups and typo fix
61 *#* Revision 1.4 2004/06/06 18:09:51 bernie
62 *#* Import DSP56800 changes; Print broken wall bricks in hex.
64 *#* Revision 1.3 2004/06/03 11:27:09 bernie
65 *#* Add dual-license information.
67 *#* Revision 1.2 2004/05/23 18:21:53 bernie
68 *#* Trim CVS logs and cleanup header info.
77 #include <mware/formatwr.h> /* for _formatted_write() */
83 #define KDBG_WAIT_READY() do { /*nop*/ } while(0)
84 #define KDBG_WRITE_CHAR(c) putchar((c))
85 #define KDBG_MASK_IRQ(old) do { (void)(old); } while(0)
86 #define KDBG_RESTORE_IRQ(old) do { /*nop*/ } while(0)
87 typedef char kdbg_irqsave_t; /* unused */
90 #define KDBG_WAIT_READY() do {} while (!(SP_STAT & (SPSF_TX_EMPTY | SPSF_TX_INT)))
91 #define KDBG_WRITE_CHAR(c) do { SBUF = (c); } while(0)
92 #define KDBG_MASK_IRQ(old) \
94 (old) = INT_MASK1 & INT1F_TI; \
95 INT_MASK1 &= ~INT1F_TI; \
97 #define KDBG_RESTORE_IRQ(old) do { INT_MASK1 |= (old); }
98 typedef uint16_t kdbg_irqsave_t; /* FIXME: unconfirmed */
102 #if CONFIG_KDEBUG_PORT == 0
105 * Support for special bus policies or external transceivers
106 * on UART0 (to be overridden in "hw.h").
108 #ifndef KDBG_UART0_BUS_INIT
109 #define KDBG_UART0_BUS_INIT do {} while (0)
111 #ifndef KDBG_UART0_BUS_RX
112 #define KDBG_UART0_BUS_RX do {} while (0)
114 #ifndef KDBG_UART0_BUS_TX
115 #define KDBG_UART0_BUS_TX do {} while (0)
122 #elif CPU_AVR_ATMEGA8
129 #define KDBG_WAIT_READY() do { loop_until_bit_is_set(USR, UDRE); } while(0)
130 #define KDBG_WAIT_TXDONE() do { loop_until_bit_is_set(USR, TXC); } while(0)
133 * We must clear the TXC flag before sending a new character to allow
134 * KDBG_WAIT_TXDONE() to work properly.
136 * BUG: if KDBG_WRITE_CHAR() is called after the TXC flag is set by hardware,
137 * a new TXC could be generated after we've cleared it and before the new
138 * character is written to UDR. On a 485 bus, the transceiver will be put
139 * in RX mode while still transmitting the last char.
141 #define KDBG_WRITE_CHAR(c) do { USR |= BV(TXC); UDR = (c); } while(0)
143 #define KDBG_MASK_IRQ(old) do { \
146 UCR &= ~(BV(TXCIE) | BV(UDRIE)); \
150 #define KDBG_RESTORE_IRQ(old) do { \
151 KDBG_WAIT_TXDONE(); \
156 typedef uint8_t kdbg_irqsave_t;
158 #elif CONFIG_KDEBUG_PORT == 1
161 * Support for special bus policies or external transceivers
162 * on UART1 (to be overridden in "hw.h").
164 #ifndef KDBG_UART1_BUS_INIT
165 #define KDBG_UART1_BUS_INIT do {} while (0)
167 #ifndef KDBG_UART1_BUS_RX
168 #define KDBG_UART1_BUS_RX do {} while (0)
170 #ifndef KDBG_UART1_BUS_TX
171 #define KDBG_UART1_BUS_TX do {} while (0)
174 #define KDBG_WAIT_READY() do { loop_until_bit_is_set(UCSR1A, UDRE); } while(0)
175 #define KDBG_WAIT_TXDONE() do { loop_until_bit_is_set(UCSR1A, TXC); } while(0)
176 #define KDBG_WRITE_CHAR(c) do { UCSR1A |= BV(TXC); UDR1 = (c); } while(0)
178 #define KDBG_MASK_IRQ(old) do { \
180 UCSR1B |= BV(TXEN); \
181 UCSR1B &= ~(BV(TXCIE) | BV(UDRIE)); \
185 #define KDBG_RESTORE_IRQ(old) do { \
186 KDBG_WAIT_TXDONE(); \
191 typedef uint8_t kdbg_irqsave_t;
193 #error CONFIG_KDEBUG_PORT should be either 0 or 1
195 #elif defined(__MWERKS__) && CPU_DSP56K
196 /* Debugging go through the JTAG interface. The MSL library already
197 implements the console I/O correctly. */
199 #define KDBG_WAIT_READY() do { } while (0)
200 #define KDBG_WRITE_CHAR(c) __put_char(c, stdout)
201 #define KDBG_MASK_IRQ(old) do { (void)(old); } while (0)
202 #define KDBG_RESTORE_IRQ(old) do { (void)(old); } while (0)
203 typedef uint8_t kdbg_irqsave_t; /* unused */
205 #error Unknown architecture
213 /* Set serial port for 19200bps 8N1 */
214 INT_MASK1 &= ~(INT1F_TI | INT1F_RI);
215 SP_CON = SPCF_RECEIVE_ENABLE | SPCF_MODE1;
216 ioc1_img |= IOC1F_TXD_SEL | IOC1F_EXTINT_SRC;
223 /* Compute the baud rate */
224 uint16_t period = (((CLOCK_FREQ / 16UL) + (CONFIG_KDEBUG_BAUDRATE / 2)) / CONFIG_KDEBUG_BAUDRATE) - 1;
227 #if CONFIG_KDEBUG_PORT == 0
228 UBRR0H = (uint8_t)(period>>8);
229 UBRR0L = (uint8_t)period;
231 #elif CONFIG_KDEBUG_PORT == 1
232 UBRR1H = (uint8_t)(period>>8);
233 UBRR1L = (uint8_t)period;
236 #error CONFIG_KDEBUG_PORT must be either 0 or 1
238 #elif CPU_AVR_ATMEGA8
239 UBRRH = (uint8_t)(period>>8);
240 UBRRL = (uint8_t)period;
241 #elif CPU_AVR_ATMEGA103
242 UBRR = (uint8_t)period;
248 #endif /* !CPU_I196 && !CPU_AVR */
250 kputs("\n\n*** DBG START ***\n");
255 * Output one character to the debug console
257 static void __kputchar(char c, UNUSED(void *, unused))
259 /* Poll while serial buffer is still busy */
262 /* Send '\n' as '\r\n' for dumb terminals */
265 KDBG_WRITE_CHAR('\r');
273 void kputchar(char c)
275 /* Mask serial TX intr */
276 kdbg_irqsave_t irqsave;
277 KDBG_MASK_IRQ(irqsave);
281 /* Restore serial TX intr */
282 KDBG_RESTORE_IRQ(irqsave);
286 void PGM_FUNC(kprintf)(const char * PGM_ATTR fmt, ...)
290 /* Mask serial TX intr */
291 kdbg_irqsave_t irqsave;
292 KDBG_MASK_IRQ(irqsave);
295 PGM_FUNC(_formatted_write)(fmt, __kputchar, 0, ap);
298 /* Restore serial TX intr */
299 KDBG_RESTORE_IRQ(irqsave);
303 void PGM_FUNC(kputs)(const char * PGM_ATTR str)
307 /* Mask serial TX intr */
308 kdbg_irqsave_t irqsave;
309 KDBG_MASK_IRQ(irqsave);
311 while ((c = PGM_READ_CHAR(str++)))
314 KDBG_RESTORE_IRQ(irqsave);
318 int PGM_FUNC(__assert)(const char * PGM_ATTR cond, const char * PGM_ATTR file, int line)
320 PGM_FUNC(kputs)(file);
321 PGM_FUNC(kprintf)(PSTR(":%d: Assertion failed: "), line);
322 PGM_FUNC(kputs)(cond);
323 PGM_FUNC(kputs)(PSTR("\n"));
328 int PGM_FUNC(__invalid_ptr)(void *value, const char * PGM_ATTR name, const char * PGM_ATTR file, int line)
330 PGM_FUNC(kputs)(file);
331 PGM_FUNC(kprintf)(PSTR(":%d: Invalid pointer: "), line);
332 PGM_FUNC(kputs)(name);
333 PGM_FUNC(kprintf)(PSTR(" = 0x%x\n"), value);
338 void __init_wall(long *wall, int size)
341 *wall++ = WALL_VALUE;
345 int __check_wall(long *wall, int size, const char *name, const char *file, int line)
349 for (i = 0; i < size; i++)
351 if (wall[i] != WALL_VALUE)
353 kprintf("%s:%d: Wall broken: %s[%d] (0x%p) = 0x%lx\n",
354 file, line, name, i, wall + i, wall[i]);
364 * Dump binary data in hex
366 void kdump(const void *_buf, size_t len)
368 const unsigned char *buf = (const unsigned char *)_buf;
371 kprintf("%02X", *buf++);