Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 1996 Paul Mackerras. |
| 3 | * Copyright (C) 2000 Dan Malek. |
| 4 | * Quick hack of Paul's code to make XMON work on 8xx processors. Lots |
| 5 | * of assumptions, like the SMC1 is used, it has been initialized by the |
| 6 | * loader at some point, and we can just stuff and suck bytes. |
| 7 | * We rely upon the 8xx uart driver to support us, as the interface |
| 8 | * changes between boot up and operational phases of the kernel. |
| 9 | */ |
| 10 | #include <linux/string.h> |
| 11 | #include <asm/machdep.h> |
| 12 | #include <asm/io.h> |
| 13 | #include <asm/page.h> |
| 14 | #include <linux/kernel.h> |
| 15 | #include <asm/8xx_immap.h> |
| 16 | #include <asm/mpc8xx.h> |
| 17 | #include <asm/commproc.h> |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 18 | #include "nonstdio.h" |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 19 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 20 | extern int xmon_8xx_write(char *str, int nb); |
| 21 | extern int xmon_8xx_read_poll(void); |
| 22 | extern int xmon_8xx_read_char(void); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 23 | |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 24 | void xmon_map_scc(void) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 25 | { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 26 | cpmp = (cpm8xx_t *)&(((immap_t *)IMAP_ADDR)->im_cpm); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 27 | } |
| 28 | |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 29 | void xmon_init_scc(void); |
| 30 | |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 31 | int xmon_write(void *ptr, int nb) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 32 | { |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 33 | return(xmon_8xx_write(ptr, nb)); |
| 34 | } |
| 35 | |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 36 | int xmon_readchar(void) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 37 | { |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 38 | return xmon_8xx_read_char(); |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 39 | } |
| 40 | |
Paul Mackerras | fca5dcd | 2005-11-08 22:55:08 +1100 | [diff] [blame] | 41 | int xmon_read_poll(void) |
Paul Mackerras | f78541d | 2005-10-28 22:53:37 +1000 | [diff] [blame] | 42 | { |
| 43 | return(xmon_8xx_read_poll()); |
| 44 | } |