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![David Gibson](/assets/img/avatar_default.png)
This adds support for early serial debugging via the built in port on IBM/AMCC PowerPC 44x CPUs. It uses a bolted TLB entry in address space 1 for the UART's mapping, allowing robust debugging both before and after the initialization of the MMU. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/*
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* (c) 2001, 2006 IBM Corporation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _ASM_POWERPC_UDBG_H
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#define _ASM_POWERPC_UDBG_H
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#ifdef __KERNEL__
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#include <linux/compiler.h>
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#include <linux/init.h>
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extern void (*udbg_putc)(char c);
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extern int (*udbg_getc)(void);
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extern int (*udbg_getc_poll)(void);
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extern void udbg_puts(const char *s);
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extern int udbg_write(const char *s, int n);
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extern int udbg_read(char *buf, int buflen);
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extern void register_early_udbg_console(void);
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extern void udbg_printf(const char *fmt, ...)
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__attribute__ ((format (printf, 1, 2)));
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extern void udbg_progress(char *s, unsigned short hex);
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extern void udbg_init_uart(void __iomem *comport, unsigned int speed,
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unsigned int clock);
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extern unsigned int udbg_probe_uart_speed(void __iomem *comport,
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unsigned int clock);
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struct device_node;
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extern void udbg_scc_init(int force_scc);
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extern int udbg_adb_init(int force_btext);
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extern void udbg_adb_init_early(void);
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extern void __init udbg_early_init(void);
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extern void __init udbg_init_debug_lpar(void);
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extern void __init udbg_init_pmac_realmode(void);
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extern void __init udbg_init_maple_realmode(void);
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extern void __init udbg_init_pas_realmode(void);
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extern void __init udbg_init_iseries(void);
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extern void __init udbg_init_rtas_panel(void);
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extern void __init udbg_init_rtas_console(void);
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extern void __init udbg_init_debug_beat(void);
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extern void __init udbg_init_btext(void);
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extern void __init udbg_init_44x_as1(void);
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#endif /* __KERNEL__ */
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#endif /* _ASM_POWERPC_UDBG_H */
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