diff options
Diffstat (limited to 'arch/ppc/xmon/adb.c')
| -rw-r--r-- | arch/ppc/xmon/adb.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/arch/ppc/xmon/adb.c b/arch/ppc/xmon/adb.c deleted file mode 100644 index e91384d..0000000 --- a/arch/ppc/xmon/adb.c +++ /dev/null @@ -1,212 +0,0 @@ -/* - * Copyright (C) 1996 Paul Mackerras. - */ -#include "nonstdio.h" -#include "privinst.h" - -#define scanhex xmon_scanhex -#define skipbl xmon_skipbl - -#define ADB_B (*(volatile unsigned char *)0xf3016000) -#define ADB_SR (*(volatile unsigned char *)0xf3017400) -#define ADB_ACR (*(volatile unsigned char *)0xf3017600) -#define ADB_IFR (*(volatile unsigned char *)0xf3017a00) - -static inline void eieio(void) { asm volatile ("eieio" : :); } - -#define N_ADB_LOG 1000 -struct adb_log { - unsigned char b; - unsigned char ifr; - unsigned char acr; - unsigned int time; -} adb_log[N_ADB_LOG]; -int n_adb_log; - -void -init_adb_log(void) -{ - adb_log[0].b = ADB_B; - adb_log[0].ifr = ADB_IFR; - adb_log[0].acr = ADB_ACR; - adb_log[0].time = get_dec(); - n_adb_log = 0; -} - -void -dump_adb_log(void) -{ - unsigned t, t0; - struct adb_log *ap; - int i; - - ap = adb_log; - t0 = ap->time; - for (i = 0; i <= n_adb_log; ++i, ++ap) { - t = t0 - ap->time; - printf("b=%x ifr=%x acr=%x at %d.%.7d\n", ap->b, ap->ifr, ap->acr, - t / 1000000000, (t % 1000000000) / 100); - } -} - -void -adb_chklog(void) -{ - struct adb_log *ap = &adb_log[n_adb_log + 1]; - - ap->b = ADB_B; - ap->ifr = ADB_IFR; - ap->acr = ADB_ACR; - if (ap->b != ap[-1].b || (ap->ifr & 4) != (ap[-1].ifr & 4) - || ap->acr != ap[-1].acr) { - ap->time = get_dec(); - ++n_adb_log; - } -} - -int -adb_bitwait(int bmask, int bval, int fmask, int fval) -{ - int i; - struct adb_log *ap; - - for (i = 10000; i > 0; --i) { - adb_chklog(); - ap = &adb_log[n_adb_log]; - if ((ap->b & bmask) == bval && (ap->ifr & fmask) == fval) - return 0; - } - return -1; -} - -int -adb_wait(void) -{ - if (adb_bitwait(0, 0, 4, 4) < 0) { - printf("adb: ready wait timeout\n"); - return -1; - } - return 0; -} - -void -adb_readin(void) -{ - int i, j; - unsigned char d[64]; - - if (ADB_B & 8) { - printf("ADB_B: %x\n", ADB_B); - return; - } - i = 0; - adb_wait(); - j = ADB_SR; - eieio(); - ADB_B &= ~0x20; - eieio(); - for (;;) { - if (adb_wait() < 0) - break; - d[i++] = ADB_SR; - eieio(); - if (ADB_B & 8) - break; - ADB_B ^= 0x10; - eieio(); - } - ADB_B |= 0x30; - if (adb_wait() == 0) - j = ADB_SR; - for (j = 0; j < i; ++j) - printf("%.2x ", d[j]); - printf("\n"); -} - -int -adb_write(unsigned char *d, int i) -{ - int j; - unsigned x; - - if ((ADB_B & 8) == 0) { - printf("r: "); - adb_readin(); - } - for (;;) { - ADB_ACR = 0x1c; - eieio(); - ADB_SR = d[0]; - eieio(); - ADB_B &= ~0x20; - eieio(); - if (ADB_B & 8) - break; - ADB_ACR = 0xc; - eieio(); - ADB_B |= 0x20; - eieio(); - adb_readin(); - } - adb_wait(); - for (j = 1; j < i; ++j) { - ADB_SR = d[j]; - eieio(); - ADB_B ^= 0x10; - eieio(); - if (adb_wait() < 0) - break; - } - ADB_ACR = 0xc; - eieio(); - x = ADB_SR; - eieio(); - ADB_B |= 0x30; - return j; -} - -void -adbcmds(void) -{ - char cmd; - unsigned rtcu, rtcl, dec, pdec, x; - int i, j; - unsigned char d[64]; - - cmd = skipbl(); - switch (cmd) { - case 't': - for (;;) { - rtcl = get_rtcl(); - rtcu = get_rtcu(); - dec = get_dec(); - printf("rtc u=%u l=%u dec=%x (%d = %d.%.7d)\n", - rtcu, rtcl, dec, pdec - dec, (pdec - dec) / 1000000000, - ((pdec - dec) % 1000000000) / 100); - pdec = dec; - if (cmd == 'x') - break; - while (xmon_read(stdin, &cmd, 1) != 1) - ; - } - break; - case 'r': - init_adb_log(); - while (adb_bitwait(8, 0, 0, 0) == 0) - adb_readin(); - break; - case 'w': - i = 0; - while (scanhex(&x)) - d[i++] = x; - init_adb_log(); - j = adb_write(d, i); - printf("sent %d bytes\n", j); - while (adb_bitwait(8, 0, 0, 0) == 0) - adb_readin(); - break; - case 'l': - dump_adb_log(); - break; - } -} |
