mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-02-09 09:15:12 +07:00
dcd83aaff1
The ePAPR embedded hypervisor specification provides an API for "byte channels", which are serial-like virtual devices for sending and receiving streams of bytes. This driver provides Linux kernel support for byte channels via three distinct interfaces: 1) An early-console (udbg) driver. This provides early console output through a byte channel. The byte channel handle must be specified in a Kconfig option. 2) A normal console driver. Output is sent to the byte channel designated for stdout in the device tree. The console driver is for handling kernel printk calls. 3) A tty driver, which is used to handle user-space input and output. The byte channel used for the console is designated as the default tty. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
61 lines
2.0 KiB
C
61 lines
2.0 KiB
C
/*
|
|
* (c) 2001, 2006 IBM Corporation.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef _ASM_POWERPC_UDBG_H
|
|
#define _ASM_POWERPC_UDBG_H
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/compiler.h>
|
|
#include <linux/init.h>
|
|
|
|
extern void (*udbg_putc)(char c);
|
|
extern void (*udbg_flush)(void);
|
|
extern int (*udbg_getc)(void);
|
|
extern int (*udbg_getc_poll)(void);
|
|
|
|
extern void udbg_puts(const char *s);
|
|
extern int udbg_write(const char *s, int n);
|
|
extern int udbg_read(char *buf, int buflen);
|
|
|
|
extern void register_early_udbg_console(void);
|
|
extern void udbg_printf(const char *fmt, ...)
|
|
__attribute__ ((format (printf, 1, 2)));
|
|
extern void udbg_progress(char *s, unsigned short hex);
|
|
|
|
extern void udbg_init_uart(void __iomem *comport, unsigned int speed,
|
|
unsigned int clock);
|
|
extern unsigned int udbg_probe_uart_speed(void __iomem *comport,
|
|
unsigned int clock);
|
|
|
|
struct device_node;
|
|
extern void udbg_scc_init(int force_scc);
|
|
extern int udbg_adb_init(int force_btext);
|
|
extern void udbg_adb_init_early(void);
|
|
|
|
extern void __init udbg_early_init(void);
|
|
extern void __init udbg_init_debug_lpar(void);
|
|
extern void __init udbg_init_debug_lpar_hvsi(void);
|
|
extern void __init udbg_init_pmac_realmode(void);
|
|
extern void __init udbg_init_maple_realmode(void);
|
|
extern void __init udbg_init_pas_realmode(void);
|
|
extern void __init udbg_init_iseries(void);
|
|
extern void __init udbg_init_rtas_panel(void);
|
|
extern void __init udbg_init_rtas_console(void);
|
|
extern void __init udbg_init_debug_beat(void);
|
|
extern void __init udbg_init_btext(void);
|
|
extern void __init udbg_init_44x_as1(void);
|
|
extern void __init udbg_init_40x_realmode(void);
|
|
extern void __init udbg_init_cpm(void);
|
|
extern void __init udbg_init_usbgecko(void);
|
|
extern void __init udbg_init_wsp(void);
|
|
extern void __init udbg_init_ehv_bc(void);
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _ASM_POWERPC_UDBG_H */
|