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Add attempt at KGDB support from Reiound. I couldn't get gdb to attach 

properly, but the kernel was definitely in kgdb_trap and would respond
to $?#3f if typed via tip(1)
This commit is contained in:
skrll 2013-05-11 14:19:44 +00:00
parent f01440c2cd
commit ee29566c11
1 changed files with 47 additions and 10 deletions
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57
sys/arch/evbarm/rpi/rpi_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: rpi_machdep.c,v 1.36 2013/05/11 07:42:34 skrll Exp $ */
/* $NetBSD: rpi_machdep.c,v 1.37 2013/05/11 14:19:44 skrll Exp $ */
/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
@ -30,9 +30,11 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: rpi_machdep.c,v 1.36 2013/05/11 07:42:34 skrll Exp $");
__KERNEL_RCSID(0, "$NetBSD: rpi_machdep.c,v 1.37 2013/05/11 14:19:44 skrll Exp $");
#include "opt_evbarm_boardtype.h"
#include "opt_ddb.h"
#include "opt_kgdb.h"
#include "sdhc.h"
#include "dotg.h"
@ -146,8 +148,21 @@ int plcomcnmode = PLCONMODE;
#endif
#include "opt_kgdb.h"
#if (NPLCOM == 0)
#error Enable plcom for KGDB support
#endif
#ifdef KGDB
#include <sys/kgdb.h>
static void kgdb_port_init(void);
#endif
#if (NPLCOM > 0 && (defined(PLCONSOLE) || defined(KGDB)))
static struct plcom_instance rpi_pi = {
.pi_type = PLCOM_TYPE_PL011,
.pi_flags = PLC_FLAG_32BIT_ACCESS,
.pi_iot = &bcm2835_bs_tag,
.pi_size = BCM2835_UART0_SIZE
};
#endif
/* Smallest amount of RAM start.elf could give us. */
@ -534,6 +549,10 @@ initarm(void *arg)
printf("done.\n");
#endif
#ifdef KGDB
kgdb_port_init();
#endif
#ifdef __HAVE_MEMORY_DISK__
md_root_setconf(memory_disk, sizeof memory_disk);
#endif
@ -557,14 +576,7 @@ void
consinit(void)
{
static int consinit_called = 0;
#if (NPLCOM > 0 && defined(PLCONSOLE))
static struct plcom_instance rpi_pi = {
.pi_type = PLCOM_TYPE_PL011,
.pi_flags = PLC_FLAG_32BIT_ACCESS,
.pi_iot = &bcm2835_bs_tag,
.pi_size = BCM2835_UART0_SIZE
};
#endif
if (consinit_called != 0)
return;
@ -583,6 +595,31 @@ consinit(void)
#endif
}
#ifdef KGDB
#if !defined(KGDB_PLCOMUNIT) || !defined(KGDB_DEVRATE) || !defined(KGDB_CONMODE)
#error Specify KGDB_PLCOMUNIT, KGDB_DEVRATE and KGDB_CONMODE for KGDB.
#endif
void
static kgdb_port_init(void)
{
static int kgdbsinit_called = 0;
int res;
if (kgdbsinit_called != 0)
return;
kgdbsinit_called = 1;
rpi_pi.pi_iobase = consaddr;
res = plcom_kgdb_attach(&rpi_pi, KGDB_DEVRATE, BCM2835_UART0_CLK,
KGDB_CONMODE, KGDB_PLCOMUNIT);
if (res)
panic("KGDB uart can not be initialized, err=%d.", res);
}
#endif
#if NGENFB > 0
static bool
rpi_fb_parse_mode(const char *s, uint32_t *pwidth, uint32_t *pheight)