mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 10:04:12 +08:00
bf4981a006
The celleb code has seen no actual development for ~7 years. We (maintainers) have no access to test hardware, and it is highly likely the code has bit-rotted. As far as we're aware the hardware was never widely available, and is certainly no longer available, and no one on the list has shown any interest in it over the years. So remove it. If anyone has one and cares please speak up. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Jeremy Kerr <jk@ozlabs.org>
181 lines
4.1 KiB
C
181 lines
4.1 KiB
C
/*
|
|
* polling mode stateless debugging stuff, originally for NS16550 Serial Ports
|
|
*
|
|
* c 2001 PPC 64 Team, IBM Corp
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#include <stdarg.h>
|
|
#include <linux/types.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/console.h>
|
|
#include <linux/init.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/udbg.h>
|
|
|
|
void (*udbg_putc)(char c);
|
|
void (*udbg_flush)(void);
|
|
int (*udbg_getc)(void);
|
|
int (*udbg_getc_poll)(void);
|
|
|
|
/*
|
|
* Early debugging facilities. You can enable _one_ of these via .config,
|
|
* if you do so your kernel _will not boot_ on anything else. Be careful.
|
|
*/
|
|
void __init udbg_early_init(void)
|
|
{
|
|
#if defined(CONFIG_PPC_EARLY_DEBUG_LPAR)
|
|
/* For LPAR machines that have an HVC console on vterm 0 */
|
|
udbg_init_debug_lpar();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_LPAR_HVSI)
|
|
/* For LPAR machines that have an HVSI console on vterm 0 */
|
|
udbg_init_debug_lpar_hvsi();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_G5)
|
|
/* For use on Apple G5 machines */
|
|
udbg_init_pmac_realmode();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_RTAS_PANEL)
|
|
/* RTAS panel debug */
|
|
udbg_init_rtas_panel();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_RTAS_CONSOLE)
|
|
/* RTAS console debug */
|
|
udbg_init_rtas_console();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_MAPLE)
|
|
/* Maple real mode debug */
|
|
udbg_init_maple_realmode();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_PAS_REALMODE)
|
|
udbg_init_pas_realmode();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_BOOTX)
|
|
udbg_init_btext();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_44x)
|
|
/* PPC44x debug */
|
|
udbg_init_44x_as1();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_40x)
|
|
/* PPC40x debug */
|
|
udbg_init_40x_realmode();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_CPM)
|
|
udbg_init_cpm();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_USBGECKO)
|
|
udbg_init_usbgecko();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_MEMCONS)
|
|
/* In memory console */
|
|
udbg_init_memcons();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_EHV_BC)
|
|
udbg_init_ehv_bc();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_PS3GELIC)
|
|
udbg_init_ps3gelic();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_OPAL_RAW)
|
|
udbg_init_debug_opal_raw();
|
|
#elif defined(CONFIG_PPC_EARLY_DEBUG_OPAL_HVSI)
|
|
udbg_init_debug_opal_hvsi();
|
|
#endif
|
|
|
|
#ifdef CONFIG_PPC_EARLY_DEBUG
|
|
console_loglevel = 10;
|
|
|
|
register_early_udbg_console();
|
|
#endif
|
|
}
|
|
|
|
/* udbg library, used by xmon et al */
|
|
void udbg_puts(const char *s)
|
|
{
|
|
if (udbg_putc) {
|
|
char c;
|
|
|
|
if (s && *s != '\0') {
|
|
while ((c = *s++) != '\0')
|
|
udbg_putc(c);
|
|
}
|
|
|
|
if (udbg_flush)
|
|
udbg_flush();
|
|
}
|
|
#if 0
|
|
else {
|
|
printk("%s", s);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
int udbg_write(const char *s, int n)
|
|
{
|
|
int remain = n;
|
|
char c;
|
|
|
|
if (!udbg_putc)
|
|
return 0;
|
|
|
|
if (s && *s != '\0') {
|
|
while (((c = *s++) != '\0') && (remain-- > 0)) {
|
|
udbg_putc(c);
|
|
}
|
|
}
|
|
|
|
if (udbg_flush)
|
|
udbg_flush();
|
|
|
|
return n - remain;
|
|
}
|
|
|
|
#define UDBG_BUFSIZE 256
|
|
void udbg_printf(const char *fmt, ...)
|
|
{
|
|
char buf[UDBG_BUFSIZE];
|
|
va_list args;
|
|
|
|
va_start(args, fmt);
|
|
vsnprintf(buf, UDBG_BUFSIZE, fmt, args);
|
|
udbg_puts(buf);
|
|
va_end(args);
|
|
}
|
|
|
|
void __init udbg_progress(char *s, unsigned short hex)
|
|
{
|
|
udbg_puts(s);
|
|
udbg_puts("\n");
|
|
}
|
|
|
|
/*
|
|
* Early boot console based on udbg
|
|
*/
|
|
static void udbg_console_write(struct console *con, const char *s,
|
|
unsigned int n)
|
|
{
|
|
udbg_write(s, n);
|
|
}
|
|
|
|
static struct console udbg_console = {
|
|
.name = "udbg",
|
|
.write = udbg_console_write,
|
|
.flags = CON_PRINTBUFFER | CON_ENABLED | CON_BOOT | CON_ANYTIME,
|
|
.index = 0,
|
|
};
|
|
|
|
/*
|
|
* Called by setup_system after ppc_md->probe and ppc_md->early_init.
|
|
* Call it again after setting udbg_putc in ppc_md->setup_arch.
|
|
*/
|
|
void __init register_early_udbg_console(void)
|
|
{
|
|
if (early_console)
|
|
return;
|
|
|
|
if (!udbg_putc)
|
|
return;
|
|
|
|
if (strstr(boot_command_line, "udbg-immortal")) {
|
|
printk(KERN_INFO "early console immortal !\n");
|
|
udbg_console.flags &= ~CON_BOOT;
|
|
}
|
|
early_console = &udbg_console;
|
|
register_console(&udbg_console);
|
|
}
|
|
|
|
#if 0 /* if you want to use this as a regular output console */
|
|
console_initcall(register_udbg_console);
|
|
#endif
|