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-rw-r--r--arch/ppc/xmon/start.c169
1 files changed, 3 insertions, 166 deletions
diff --git a/arch/ppc/xmon/start.c b/arch/ppc/xmon/start.c
index 484f5bb1aa3e..ff86b2d814cb 100644
--- a/arch/ppc/xmon/start.c
+++ b/arch/ppc/xmon/start.c
@@ -6,16 +6,11 @@
6#include <asm/machdep.h> 6#include <asm/machdep.h>
7#include <asm/io.h> 7#include <asm/io.h>
8#include <asm/page.h> 8#include <asm/page.h>
9#include <linux/adb.h>
10#include <linux/pmu.h>
11#include <linux/cuda.h>
12#include <linux/kernel.h> 9#include <linux/kernel.h>
13#include <linux/errno.h> 10#include <linux/errno.h>
14#include <linux/sysrq.h> 11#include <linux/sysrq.h>
15#include <linux/bitops.h> 12#include <linux/bitops.h>
16#include <asm/xmon.h> 13#include <asm/xmon.h>
17#include <asm/prom.h>
18#include <asm/bootx.h>
19#include <asm/machdep.h> 14#include <asm/machdep.h>
20#include <asm/errno.h> 15#include <asm/errno.h>
21#include <asm/processor.h> 16#include <asm/processor.h>
@@ -26,9 +21,7 @@ static volatile unsigned char *sccc, *sccd;
26unsigned int TXRDY, RXRDY, DLAB; 21unsigned int TXRDY, RXRDY, DLAB;
27static int xmon_expect(const char *str, unsigned int timeout); 22static int xmon_expect(const char *str, unsigned int timeout);
28 23
29static int use_screen;
30static int via_modem; 24static int via_modem;
31static int xmon_use_sccb;
32 25
33#define TB_SPEED 25000000 26#define TB_SPEED 25000000
34 27
@@ -46,47 +39,6 @@ void buf_access(void)
46 sccd[3] &= ~DLAB; /* reset DLAB */ 39 sccd[3] &= ~DLAB; /* reset DLAB */
47} 40}
48 41
49extern int adb_init(void);
50
51#ifdef CONFIG_PPC_CHRP
52/*
53 * This looks in the "ranges" property for the primary PCI host bridge
54 * to find the physical address of the start of PCI/ISA I/O space.
55 * It is basically a cut-down version of pci_process_bridge_OF_ranges.
56 */
57static unsigned long chrp_find_phys_io_base(void)
58{
59 struct device_node *node;
60 unsigned int *ranges;
61 unsigned long base = CHRP_ISA_IO_BASE;
62 int rlen = 0;
63 int np;
64
65 node = find_devices("isa");
66 if (node != NULL) {
67 node = node->parent;
68 if (node == NULL || node->type == NULL
69 || strcmp(node->type, "pci") != 0)
70 node = NULL;
71 }
72 if (node == NULL)
73 node = find_devices("pci");
74 if (node == NULL)
75 return base;
76
77 ranges = (unsigned int *) get_property(node, "ranges", &rlen);
78 np = prom_n_addr_cells(node) + 5;
79 while ((rlen -= np * sizeof(unsigned int)) >= 0) {
80 if ((ranges[0] >> 24) == 1 && ranges[2] == 0) {
81 /* I/O space starting at 0, grab the phys base */
82 base = ranges[np - 3];
83 break;
84 }
85 ranges += np;
86 }
87 return base;
88}
89#endif /* CONFIG_PPC_CHRP */
90 42
91#ifdef CONFIG_MAGIC_SYSRQ 43#ifdef CONFIG_MAGIC_SYSRQ
92static void sysrq_handle_xmon(int key, struct pt_regs *regs, 44static void sysrq_handle_xmon(int key, struct pt_regs *regs,
@@ -109,22 +61,6 @@ xmon_map_scc(void)
109#ifdef CONFIG_PPC_MULTIPLATFORM 61#ifdef CONFIG_PPC_MULTIPLATFORM
110 volatile unsigned char *base; 62 volatile unsigned char *base;
111 63
112#ifdef CONFIG_PPC_CHRP
113 base = (volatile unsigned char *) isa_io_base;
114 if (_machine == _MACH_chrp)
115 base = (volatile unsigned char *)
116 ioremap(chrp_find_phys_io_base(), 0x1000);
117
118 sccc = base + 0x3fd;
119 sccd = base + 0x3f8;
120 if (xmon_use_sccb) {
121 sccc -= 0x100;
122 sccd -= 0x100;
123 }
124 TXRDY = 0x20;
125 RXRDY = 1;
126 DLAB = 0x80;
127#endif /* CONFIG_PPC_CHRP */
128#elif defined(CONFIG_GEMINI) 64#elif defined(CONFIG_GEMINI)
129 /* should already be mapped by the kernel boot */ 65 /* should already be mapped by the kernel boot */
130 sccc = (volatile unsigned char *) 0xffeffb0d; 66 sccc = (volatile unsigned char *) 0xffeffb0d;
@@ -143,7 +79,7 @@ xmon_map_scc(void)
143 register_sysrq_key('x', &sysrq_xmon_op); 79 register_sysrq_key('x', &sysrq_xmon_op);
144} 80}
145 81
146static int scc_initialized = 0; 82static int scc_initialized;
147 83
148void xmon_init_scc(void); 84void xmon_init_scc(void);
149 85
@@ -163,14 +99,6 @@ xmon_write(void *handle, void *ptr, int nb)
163 break; 99 break;
164#endif 100#endif
165 101
166#ifdef CONFIG_BOOTX_TEXT
167 if (use_screen) {
168 /* write it on the screen */
169 for (i = 0; i < nb; ++i)
170 btext_drawchar(*p++);
171 goto out;
172 }
173#endif
174 if (!scc_initialized) 102 if (!scc_initialized)
175 xmon_init_scc(); 103 xmon_init_scc();
176 ct = 0; 104 ct = 0;
@@ -190,7 +118,6 @@ xmon_write(void *handle, void *ptr, int nb)
190 eieio(); 118 eieio();
191 } 119 }
192 120
193 out:
194#ifdef CONFIG_SMP 121#ifdef CONFIG_SMP
195 if (!locked) 122 if (!locked)
196 clear_bit(0, &xmon_write_lock); 123 clear_bit(0, &xmon_write_lock);
@@ -199,65 +126,7 @@ xmon_write(void *handle, void *ptr, int nb)
199} 126}
200 127
201int xmon_wants_key; 128int xmon_wants_key;
202int xmon_adb_keycode;
203
204#ifdef CONFIG_BOOTX_TEXT
205static int xmon_adb_shiftstate;
206
207static unsigned char xmon_keytab[128] =
208 "asdfhgzxcv\000bqwer" /* 0x00 - 0x0f */
209 "yt123465=97-80]o" /* 0x10 - 0x1f */
210 "u[ip\rlj'k;\\,/nm." /* 0x20 - 0x2f */
211 "\t `\177\0\033\0\0\0\0\0\0\0\0\0\0" /* 0x30 - 0x3f */
212 "\0.\0*\0+\0\0\0\0\0/\r\0-\0" /* 0x40 - 0x4f */
213 "\0\0000123456789\0\0\0"; /* 0x50 - 0x5f */
214
215static unsigned char xmon_shift_keytab[128] =
216 "ASDFHGZXCV\000BQWER" /* 0x00 - 0x0f */
217 "YT!@#$^%+(&_*)}O" /* 0x10 - 0x1f */
218 "U{IP\rLJ\"K:|<?NM>" /* 0x20 - 0x2f */
219 "\t ~\177\0\033\0\0\0\0\0\0\0\0\0\0" /* 0x30 - 0x3f */
220 "\0.\0*\0+\0\0\0\0\0/\r\0-\0" /* 0x40 - 0x4f */
221 "\0\0000123456789\0\0\0"; /* 0x50 - 0x5f */
222
223static int
224xmon_get_adb_key(void)
225{
226 int k, t, on;
227 129
228 xmon_wants_key = 1;
229 for (;;) {
230 xmon_adb_keycode = -1;
231 t = 0;
232 on = 0;
233 do {
234 if (--t < 0) {
235 on = 1 - on;
236 btext_drawchar(on? 0xdb: 0x20);
237 btext_drawchar('\b');
238 t = 200000;
239 }
240 do_poll_adb();
241 } while (xmon_adb_keycode == -1);
242 k = xmon_adb_keycode;
243 if (on)
244 btext_drawstring(" \b");
245
246 /* test for shift keys */
247 if ((k & 0x7f) == 0x38 || (k & 0x7f) == 0x7b) {
248 xmon_adb_shiftstate = (k & 0x80) == 0;
249 continue;
250 }
251 if (k >= 0x80)
252 continue; /* ignore up transitions */
253 k = (xmon_adb_shiftstate? xmon_shift_keytab: xmon_keytab)[k];
254 if (k != 0)
255 break;
256 }
257 xmon_wants_key = 0;
258 return k;
259}
260#endif /* CONFIG_BOOTX_TEXT */
261 130
262int 131int
263xmon_read(void *handle, void *ptr, int nb) 132xmon_read(void *handle, void *ptr, int nb)
@@ -265,18 +134,11 @@ xmon_read(void *handle, void *ptr, int nb)
265 char *p = ptr; 134 char *p = ptr;
266 int i; 135 int i;
267 136
268#ifdef CONFIG_BOOTX_TEXT
269 if (use_screen) {
270 for (i = 0; i < nb; ++i)
271 *p++ = xmon_get_adb_key();
272 return i;
273 }
274#endif
275 if (!scc_initialized) 137 if (!scc_initialized)
276 xmon_init_scc(); 138 xmon_init_scc();
277 for (i = 0; i < nb; ++i) { 139 for (i = 0; i < nb; ++i) {
278 while ((*sccc & RXRDY) == 0) 140 while ((*sccc & RXRDY) == 0)
279 do_poll_adb(); 141 ;
280 buf_access(); 142 buf_access();
281 *p++ = *sccd; 143 *p++ = *sccd;
282 } 144 }
@@ -287,7 +149,7 @@ int
287xmon_read_poll(void) 149xmon_read_poll(void)
288{ 150{
289 if ((*sccc & RXRDY) == 0) { 151 if ((*sccc & RXRDY) == 0) {
290 do_poll_adb(); 152 ;
291 return -1; 153 return -1;
292 } 154 }
293 buf_access(); 155 buf_access();
@@ -297,15 +159,6 @@ xmon_read_poll(void)
297void 159void
298xmon_init_scc(void) 160xmon_init_scc(void)
299{ 161{
300 if ( _machine == _MACH_chrp )
301 {
302 sccd[3] = 0x83; eieio(); /* LCR = 8N1 + DLAB */
303 sccd[0] = 12; eieio(); /* DLL = 9600 baud */
304 sccd[1] = 0; eieio();
305 sccd[2] = 0; eieio(); /* FCR = 0 */
306 sccd[3] = 3; eieio(); /* LCR = 8N1 */
307 sccd[1] = 0; eieio(); /* IER = 0 */
308 }
309 scc_initialized = 1; 162 scc_initialized = 1;
310 if (via_modem) { 163 if (via_modem) {
311 for (;;) { 164 for (;;) {
@@ -321,22 +174,6 @@ xmon_init_scc(void)
321 } 174 }
322} 175}
323 176
324#if 0
325extern int (*prom_entry)(void *);
326
327int
328xmon_exit(void)
329{
330 struct prom_args {
331 char *service;
332 } args;
333
334 for (;;) {
335 args.service = "exit";
336 (*prom_entry)(&args);
337 }
338}
339#endif
340 177
341void *xmon_stdin; 178void *xmon_stdin;
342void *xmon_stdout; 179void *xmon_stdout;