iBoot/sys/debug.c

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C
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2023-07-08 13:03:17 -07:00
/*
* Copyright (C) 2007-2008 Apple Inc. All rights reserved.
* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
*
* This document is the property of Apple Computer, Inc.
* It is considered confidential and proprietary.
*
* This document may not be reproduced or transmitted in any form,
* in whole or in part, without the express written permission of
* Apple Computer, Inc.
*/
#include <arch.h>
#include <sys.h>
#include <sys/task.h>
#include <debug.h>
#include <lib/cbuf.h>
#include <drivers/power.h>
#if WITH_HW_UART
# include <drivers/uart.h>
# if WITH_TARGET_CONFIG
# include <target/uartconfig.h>
# elif WITH_PLATFORM_UARTCONFIG
# include <platform/uartconfig.h>
# endif
#endif
#if APPLICATION_SECUREROM
# define DEBUG_QUEUE_LEN 256
#else
# define DEBUG_QUEUE_LEN 4096
#endif
static struct task_event debug_event;
static struct cbuf *debug_cbuf;
#if WITH_USB_MODE_RECOVERY
// Use USB serial debug, unless there's a dockfifo, because spew from that
// driver will deadlock us.
#if !defined(USE_USB_DEBUG) && !defined(WITH_HW_DOCKFIFO_BULK)
#define USE_USB_DEBUG 1
#endif
#include <drivers/usb/usb_public.h>
#endif // WITH_USB_MODE_RECOVERY
#if WITH_TBT_MODE_RECOVERY
#ifndef USE_TBT_DEBUG
#define USE_TBT_DEBUG 1
#endif
#include <drivers/thunderbolt/thunderboot.h>
#endif // WITH_TBT_MODE_RECOVERY
#if WITH_ARM_DCC
# include <arch/arm/arm.h>
#endif
#if WITH_SHM_CONSOLE
# include <drivers/shmcon.h>
#endif
#if WITH_HW_DOCKFIFO_UART
# include <drivers/dockfifo/dockfifo.h>
#endif
#if WITH_HW_DOCKCHANNEL_UART
# include <drivers/dockchannel/dockchannel.h>
#endif
int debug_getchar(void)
{
ssize_t ret;
char c;
ASSERT(NULL != debug_cbuf);
event_wait(&debug_event);
ret = cbuf_read_char(debug_cbuf, &c);
ASSERT(ret >= 0);
return c;
}
int debug_getchar_nowait(void)
{
ssize_t ret;
char c;
ASSERT(NULL != debug_cbuf);
ret = cbuf_read_char(debug_cbuf, &c);
if (ret < 1) {
return -1;
}
return c;
}
int debug_pushchar(int c)
{
ASSERT(NULL != debug_cbuf);
return cbuf_write_char(debug_cbuf, c);
}
void debug_init(void)
{
debug_cbuf = cbuf_create(DEBUG_QUEUE_LEN, &debug_event);
}
int DebugUartReady = 0;
void debug_enable_uarts(int debug_uarts)
{
DebugUartReady |= debug_uarts;
}
void debug_putchar(int c)
{
#if USE_USB_DEBUG
usb_serial_putchar(c);
#endif
#if USE_TBT_DEBUG
thunderboot_putchar(c);
#endif
#if defined(DEBUG_SERIAL_PORT)
if ((DebugUartReady & kPowerNVRAMiBootDebugIAPSerial) != 0) {
if (c == '\n')
uart_putc(DEBUG_SERIAL_PORT, '\r');
uart_putc(DEBUG_SERIAL_PORT, c);
}
#endif
#if defined(DEBUG_SERIAL_PORT2)
if ((DebugUartReady & kPowerNVRAMiBootDebugAltSerial) != 0) {
if (c == '\n')
uart_putc(DEBUG_SERIAL_PORT2, '\r');
uart_putc(DEBUG_SERIAL_PORT2, c);
}
#endif
#if WITH_ARM_DCC
// always output dcc
arm_write_dcc_char(c);
#endif
#if WITH_SHM_CONSOLE
if ((DebugUartReady & kPowerNVRAMiBootDebugJtag) != 0) {
if (c == '\n')
shmcon_putc(0, '\r');
shmcon_putc(0, c);
}
#endif
#if WITH_HW_DOCKFIFO_UART
if ((DebugUartReady & kPowerNVRAMiBootDebugIAPSerial) != 0) {
if (c == '\n')
dockfifo_uart_putc('\r');
dockfifo_uart_putc(c);
}
#endif
#if WITH_HW_DOCKCHANNEL_UART
if ((DebugUartReady & kPowerNVRAMiBootDebugIAPSerial) != 0) {
if (c == '\n')
dockchannel_uart_putc('\r');
dockchannel_uart_putc(c);
}
#endif
#if WITH_APPLICATION_PUTCHAR
application_putchar(c);
#endif
}
int debug_run_script(const char *addr)
{
char lastchar;
// printf("running script at %p\n", addr);
/* start stuffing data into the input queue at the specified address until we hit an EOF char */
lastchar = 0;
while ((*addr != 0x04) && (*addr != 0)) {
debug_pushchar(*addr);
lastchar = *addr;
addr++;
}
if (lastchar != '\n')
debug_pushchar('\n');
// printf("finished running script (EOF at %p)\n", addr);
return 0;
}