inteltool: Add support for dumping AMB registers

Change-Id: I98615725afdb315caa67b2226224e3eb2a0e4393
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/525
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 469 insertions, 0 deletions

diff --git a/util/inteltool/amb.c b/util/inteltool/amb.c
new file mode 100644
index 0000000000..a3ee01da43
--- /dev/null
+++ b/util/inteltool/amb.c
@@ -0,0 +1,469 @@
+/*
+ * inteltool - dump all registers on an Intel CPU + chipset based system.
+ *
+ * Copyright (C) 2012 Sven Schnelle <svens@stackframe.org>
+ *
+ * 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; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "inteltool.h"
+
+#define AMB_CONFIG_SPACE_SIZE 0x20000
+
+#define AMB_ADDR(base, fn, reg) (base | ((fn & 7) << 8) | ((reg & 0xff)))
+
+static uint32_t amb_read_config32(volatile void *base, int fn, int reg)
+{
+	return *(uint32_t *)(AMB_ADDR((uint64_t)base, fn, reg));
+}
+
+static void amb_printreg32(volatile void *base, int fn, int reg,
+			   const char *name, int printzero)
+{
+	uint32_t val = amb_read_config32(base, fn, reg);
+	if (!val && !printzero)
+		return;
+	printf("%d:%2.2x %-16.16s: 0x%08x\n", fn, reg, name, val);
+}
+
+static uint16_t amb_read_config16(volatile void *base, int fn, int reg)
+{
+	return *(uint16_t *)(AMB_ADDR((uint64_t)base, fn, reg));
+}
+
+static void amb_printreg16(volatile void *base, int fn, int reg,
+			   const char *name, int printzero)
+{
+	uint16_t val = amb_read_config16(base, fn, reg);
+	if (!val && !printzero)
+		return;
+	printf("%d:%2.2x %-16.16s: 0x%04x\n", fn, reg, name, val);
+
+}
+
+static uint8_t amb_read_config8(volatile void *base, int fn, int reg)
+{
+	return *(uint8_t *)(AMB_ADDR((uint64_t)base, fn, reg));
+}
+
+static void amb_printreg8(volatile void *base, int fn, int reg,
+			  const char *name, int printzero)
+{
+	uint8_t val = amb_read_config8(base, fn, reg);
+	if (!val && !printzero)
+		return;
+	printf("%d:%2.2x %-16.16s: 0x%02x\n", fn, reg, name, val);
+
+}
+
+static void amb_printreg24(volatile void *base, int fn, int reg,
+			   const char *name, int printzero)
+{
+	uint32_t val;
+
+	if (reg & 1) {
+		val = amb_read_config8(base, fn, reg) |
+			(amb_read_config16(base, fn, reg + 1) << 8);
+	} else {
+		val = amb_read_config16(base, fn, reg) |
+			(amb_read_config8(base, fn, reg + 2) << 16);
+	}
+
+	if (!val && !printzero)
+		return;
+
+	printf("%d:%2.2x %-16.16s: 0x%06x\n", fn, reg, name, val);
+}
+
+
+struct amb_register {
+	int fn;
+	int offset;
+	const char *name;
+	void (*printfunc)(volatile void *, int, int, const char *, int);
+	int width;
+} amb_registers[] = {
+	{ 0, 0x00, "VID", NULL, 2 },
+	{ 0, 0x02, "DID", NULL, 2 },
+	{ 0, 0x08, "RID", NULL, 1 },
+	{ 0, 0x09, "CCR", NULL, 3 },
+	{ 0, 0x0e, "HDR", NULL, 1 },
+	{ 1, 0x40, "FBDS0", NULL, 1 },
+	{ 1, 0x41, "FBDS1", NULL, 1 },
+	{ 1, 0x42, "FBDS2", NULL, 1 },
+	{ 1, 0x43, "FBDS3", NULL, 1 },
+	{ 1, 0x50, "FBDSBCFGCUR", NULL, 1 },
+	{ 1, 0x51, "FBDNBCFGCUR", NULL, 1 },
+	{ 1, 0x52, "LINKPARCUR", NULL, 2 },
+	{ 1, 0x54, "FBDSBCFGNXT", NULL, 1 },
+	{ 1, 0x55, "FBDNBCFGNXT", NULL, 1 },
+	{ 1, 0x56, "LINKPARNXT", NULL, 2 },
+	{ 1, 0x5a, "SBRXMAR", NULL, 1 },
+	{ 1, 0x5b, "NBRXMAR", NULL, 1 },
+	{ 1, 0x5c, "MODES", NULL, 1 },
+	{ 1, 0x60, "FEATURES", NULL, 2 },
+	{ 1, 0x64, "FBDLIS", NULL, 3 },
+	{ 1, 0x68, "FBDLOCKTO", NULL, 2 },
+	{ 1, 0x6c, "FBDHAC", NULL, 1 },
+	{ 1, 0x6e, "FBDLS", NULL, 1 },
+	{ 1, 0x70, "RECALDUR", NULL, 1 },
+	{ 1, 0x74, "LOSDUR", NULL, 1 },
+	{ 1, 0x78, "SYNCTRAININT", NULL, 1 },
+	{ 1, 0x7c, "SBCALSTATUS", NULL, 2 },
+	{ 1, 0x7e, "NBCALSTATUS", NULL, 2 },
+	{ 1, 0x88, "CBC", NULL, 1 },
+	{ 1, 0x8c, "EMASK", NULL, 1 },
+	{ 1, 0x90, "FERR", NULL, 1 },
+	{ 1, 0x94, "NERR", NULL, 1 },
+	{ 1, 0x98, "RECCFG", NULL, 2 },
+	{ 1, 0x9c, "RECFBD0", NULL, 2 },
+	{ 1, 0x9e, "RECFBD1", NULL, 2 },
+	{ 1, 0xa0, "RECFBD2", NULL, 2 },
+	{ 1, 0xa2, "RECFBD3", NULL, 2 },
+	{ 1, 0xa4, "RECFBD4", NULL, 2 },
+	{ 1, 0xa6, "RECFBD5", NULL, 2 },
+	{ 1, 0xa8, "RECFBD6", NULL, 2 },
+	{ 1, 0xaa, "RECFBD7", NULL, 2 },
+	{ 1, 0xac, "RECFBD8", NULL, 2 },
+	{ 1, 0xae, "RECFBD9", NULL, 2 },
+	{ 1, 0xb0, "PERSBYTE0NXT", NULL, 1 },
+	{ 1, 0xb1, "PERSBYTE1NXT", NULL, 1 },
+	{ 1, 0xb2, "PERSBYTE2NXT", NULL, 1 },
+	{ 1, 0xb3, "PERSBYTE3NXT", NULL, 1 },
+	{ 1, 0xb4, "PERSBYTE4NXT", NULL, 1 },
+	{ 1, 0xb5, "PERSBYTE5NXT", NULL, 1 },
+	{ 1, 0xb6, "PERSBYTE6NXT", NULL, 1 },
+	{ 1, 0xb7, "PERSBYTE7NXT", NULL, 1 },
+	{ 1, 0xb8, "PERSBYTE8NXT", NULL, 1 },
+	{ 1, 0xb9, "PERSBYTE9NXT", NULL, 1 },
+	{ 1, 0xba, "PERSBYTE10NXT", NULL, 1 },
+	{ 1, 0xbb, "PERSBYTE11NXT", NULL, 1 },
+	{ 1, 0xbc, "PERSBYTE12NXT", NULL, 1 },
+	{ 1, 0xbd, "PERSBYTE13NXT", NULL, 1 },
+	{ 1, 0xc0, "PERSBYTE0CUR", NULL, 1 },
+	{ 1, 0xc1, "PERSBYTE1CUR", NULL, 1 },
+	{ 1, 0xc2, "PERSBYTE2CUR", NULL, 1 },
+	{ 1, 0xc3, "PERSBYTE3CUR", NULL, 1 },
+	{ 1, 0xc4, "PERSBYTE4CUR", NULL, 1 },
+	{ 1, 0xc5, "PERSBYTE5CUR", NULL, 1 },
+	{ 1, 0xc6, "PERSBYTE6CUR", NULL, 1 },
+	{ 1, 0xc7, "PERSBYTE7CUR", NULL, 1 },
+	{ 1, 0xc8, "PERSBYTE8CUR", NULL, 1 },
+	{ 1, 0xc9, "PERSBYTE9CUR", NULL, 1 },
+	{ 1, 0xca, "PERSBYTE10CUR", NULL, 1 },
+	{ 1, 0xcb, "PERSBYTE11CUR", NULL, 1 },
+	{ 1, 0xcc, "PERSBYTE12CUR", NULL, 1 },
+	{ 1, 0xcd, "PERSBYTE13CUR", NULL, 1 },
+	{ 1, 0xe8, "CMD2DATANXT", NULL, 1 },
+	{ 1, 0xe9, "CMD2DATACUR", NULL, 1 },
+	{ 1, 0xea, "C2DINCRNXT", NULL, 1 },
+	{ 1, 0xeb, "C2DINCRCUR", NULL, 1 },
+	{ 1, 0xec, "C2DDECRNXT", NULL, 1 },
+	{ 1, 0xed, "C2DDECRCUR", NULL, 1 },
+	{ 2, 0x40, "SBDRVCFG", NULL, 1 },
+	{ 2, 0x41, "NBDRVCFG", NULL, 1 },
+	{ 2, 0x42, "FBDPDCFG", NULL, 1 },
+	{ 2, 0x44, "RTERMCFG", NULL, 3 },
+	{ 2, 0x47, "IDTCTRLCFG", NULL, 1 },
+	{ 2, 0x48, "FBDBUFCFG", NULL, 1 },
+	{ 2, 0x50, "SBRQOFFS0", NULL, 1 },
+	{ 2, 0x51, "SBRQOFFS1", NULL, 1 },
+	{ 2, 0x52, "SBRQOFFS2", NULL, 1 },
+	{ 2, 0x53, "SBRQOFFS3", NULL, 1 },
+	{ 2, 0x54, "SBRQOFFS4", NULL, 1 },
+	{ 2, 0x55, "SBRQOFFS5", NULL, 1 },
+	{ 2, 0x56, "SBRQOFFS6", NULL, 1 },
+	{ 2, 0x57, "SBRQOFFS7", NULL, 1 },
+	{ 2, 0x58, "SBRQOFFS8", NULL, 1 },
+	{ 2, 0x59, "SBRQOFFS9", NULL, 1 },
+
+	{ 2, 0x60, "NBRQOFFS0", NULL, 1 },
+	{ 2, 0x61, "NBRQOFFS1", NULL, 1 },
+	{ 2, 0x62, "NBRQOFFS2", NULL, 1 },
+	{ 2, 0x63, "NBRQOFFS3", NULL, 1 },
+	{ 2, 0x64, "NBRQOFFS4", NULL, 1 },
+	{ 2, 0x65, "NBRQOFFS5", NULL, 1 },
+	{ 2, 0x66, "NBRQOFFS6", NULL, 1 },
+	{ 2, 0x67, "NBRQOFFS7", NULL, 1 },
+	{ 2, 0x68, "NBRQOFFS8", NULL, 1 },
+	{ 2, 0x69, "NBRQOFFS9", NULL, 1 },
+	{ 2, 0x6a, "NBRQOFFS10", NULL, 1 },
+	{ 2, 0x6b, "NBRQOFFS11", NULL, 1 },
+	{ 2, 0x6c, "NBRQOFFS12", NULL, 1 },
+	{ 2, 0x6d, "NBRQOFFS13", NULL, 1 },
+	{ 2, 0x90, "TESTCFG", NULL, 1 },
+	{ 2, 0x94, "SBTXENCFG", NULL, 2 },
+	{ 2, 0x96, "NBTXENCFG", NULL, 2 },
+	{ 2, 0x98, "IDLEDETCFG", NULL, 2 },
+	{ 2, 0xa4, "SBRXSTATUS", NULL, 4 },
+	{ 2, 0xa8, "SBRXSTATUS", NULL, 1 },
+	{ 3, 0x3c, "MBIDT", NULL, 1 },
+	{ 3, 0x40, "MBCSR", NULL, 4 },
+	{ 3, 0x44, "MBADDR", NULL, 4 },
+	{ 3, 0x40, "MBDATA0", NULL, 4 },
+	{ 3, 0x41, "MBDATA1", NULL, 4 },
+	{ 3, 0x42, "MBDATA2", NULL, 4 },
+	{ 3, 0x43, "MBDATA3", NULL, 4 },
+	{ 3, 0x44, "MBDATA4", NULL, 4 },
+	{ 3, 0x45, "MBDATA5", NULL, 4 },
+	{ 3, 0x46, "MBDATA6", NULL, 4 },
+	{ 3, 0x47, "MBDATA7", NULL, 4 },
+	{ 3, 0x48, "MBDATA8", NULL, 4 },
+	{ 3, 0x49, "MBDATA9", NULL, 4 },
+	{ 3, 0x70, "DAREFTC", NULL, 4 },
+	{ 3, 0x74, "DSREFTC", NULL, 3 },
+	{ 3, 0x77, "MTR", NULL, 1 },
+	{ 3, 0x78, "DRT", NULL, 4 },
+	{ 3, 0x7c, "DRC", NULL, 4 },
+	{ 3, 0x80, "TEMPLO", NULL, 1 },
+	{ 3, 0x81, "TEMPMID", NULL, 1 },
+	{ 3, 0x82, "TEMPHI", NULL, 1 },
+	{ 3, 0x83, "UPDATED", NULL, 1 },
+	{ 3, 0x84, "TEMPSTAT", NULL, 1 },
+	{ 3, 0x85, "TEMP", NULL, 1 },
+	{ 3, 0x86, "TEMPOFFSET", NULL, 1 },
+	{ 3, 0x9c, "MB_START_ADDR", NULL, 4 },
+	{ 3, 0xa0, "MB_END_ADDR", NULL, 4 },
+	{ 3, 0xa4, "MBLFSRSEED", NULL, 4 },
+	{ 3, 0xa8, "MBFADDRPTR", NULL, 4 },
+	{ 3, 0xb0, "MB_ERR_DATA00", NULL, 4 },
+	{ 3, 0xb4, "MB_ERR_DATA01", NULL, 4 },
+	{ 3, 0xb8, "MB_ERR_DATA02", NULL, 4 },
+	{ 3, 0xbc, "MB_ERR_DATA03", NULL, 4 },
+	{ 3, 0xc0, "MB_ERR_DATA04", NULL, 2 },
+	{ 3, 0xc4, "MB_ERR_DATA10", NULL, 4 },
+	{ 3, 0xc8, "MB_ERR_DATA11", NULL, 4 },
+	{ 3, 0xcc, "MB_ERR_DATA12", NULL, 4 },
+	{ 3, 0xd0, "MB_ERR_DATA13", NULL, 4 },
+	{ 3, 0xd4, "MB_ERR_DATA14", NULL, 2 },
+
+	{ 4, 0x40, "DCALCSR", NULL, 4 },
+	{ 4, 0x44, "DCALADDR", NULL, 4 },
+	{ 4, 0x98, "DSRETC", NULL, 4 },
+	{ 4, 0xa4, "S3RESTORE0", NULL, 4 },
+	{ 4, 0xa8, "S3RESTORE1", NULL, 4 },
+	{ 4, 0xac, "S3RESTORE2", NULL, 4 },
+	{ 4, 0xb0, "S3RESTORE3", NULL, 4 },
+	{ 4, 0xb4, "S3RESTORE4", NULL, 4 },
+	{ 4, 0xb8, "S3RESTORE5", NULL, 4 },
+	{ 4, 0xbc, "S3RESTORE6", NULL, 4 },
+	{ 4, 0xc0, "S3RESTORE7", NULL, 4 },
+	{ 4, 0xc4, "S3RESTORE8", NULL, 4 },
+	{ 4, 0xc8, "S3RESTORE9", NULL, 4 },
+	{ 4, 0xcc, "S3RESTORE10", NULL, 4 },
+	{ 4, 0xe8, "FIVESREG", NULL, 4 },
+	{ 4, 0xea, "AAAAREG", NULL, 4 },
+
+	{ 5, 0x3c, "TRANSCFG", NULL, 4 },
+	{ 5, 0x40, "TRANDERR0", NULL, 2 },
+	{ 5, 0x42, "TRANDERR1", NULL, 2 },
+	{ 5, 0x44, "TRANDERR2", NULL, 2 },
+	{ 5, 0x46, "TRANDERR3", NULL, 2 },
+	{ 5, 0x48, "TRANDERR4", NULL, 2 },
+	{ 5, 0x4a, "TRANDERR5", NULL, 2 },
+	{ 5, 0x4c, "TRANDERR6", NULL, 2 },
+	{ 5, 0x4e, "TRANDERR7", NULL, 2 },
+	{ 5, 0x50, "TRANDERR8", NULL, 2 },
+	{ 5, 0x80, "TRANSCTRL", NULL, 1 },
+	{ 5, 0xbc, "SBMATCHU", NULL, 3 },
+	{ 5, 0xc0, "SBMATCHL0", NULL, 4 },
+	{ 5, 0xcc, "SBMASKU", NULL, 3 },
+	{ 5, 0xd0, "SBMASKL0", NULL, 4 },
+	{ 5, 0xe0, "EVENTSEL0", NULL, 3 },
+	{ 5, 0xfc, "EICNTL", NULL, 1 },
+	{ 5, 0xfe, "STUCKL", NULL, 1 },
+
+	{ 6, 0x50, "NBRXSTATUS", NULL, 4 },
+	{ 6, 0x7c, "SPAD0", NULL, 4 },
+	{ 6, 0x80, "SBFIBPORTCTL", NULL, 4 },
+	{ 6, 0x84, "SBFIBPGCTL", NULL, 4 },
+	{ 6, 0x88, "SBFIBPATTBUF1", NULL, 3 },
+	{ 6, 0x8c, "SBFIBTXMSK", NULL, 2 },
+	{ 6, 0x90, "SBFIBRXMSK", NULL, 2 },
+	{ 6, 0x94, "SBFIBTXSHFT", NULL, 2 },
+	{ 6, 0x98, "SBFIBRXSHFT", NULL, 2 },
+	{ 6, 0x9c, "SBFIBRXLNERR", NULL, 2 },
+	{ 6, 0xa0, "SBFIBPATTBUF2", NULL, 3 },
+	{ 6, 0xa4, "SBFIBPATT2EN", NULL, 2 },
+	{ 6, 0xb0, "SBFIBINIT", NULL, 4 },
+	{ 6, 0xb4, "SBIBISTMISC", NULL, 3 },
+	{ 6, 0xc0, "NBFIBPORTCTL", NULL, 4 },
+	{ 6, 0xc4, "NBFIBPGCTL", NULL, 4 },
+	{ 6, 0xc8, "NBFIBPATTBUF1", NULL, 3 },
+	{ 6, 0xcc, "NBFIBTXMSK", NULL, 2 },
+	{ 6, 0xd0, "NBFIBRXMSK", NULL, 2 },
+	{ 6, 0xd4, "NBFIBTXSHFT", NULL, 2 },
+	{ 6, 0xd8, "NBFIBRXSHFT", NULL, 2 },
+	{ 6, 0xdc, "NBFIBRXLNERR", NULL, 2 },
+	{ 6, 0xe0, "NBFIBPATTBUF2", NULL, 3 },
+	{ 6, 0xe4, "NBFIBPATT2EN", NULL, 2 },
+	{ 6, 0xf0, "NBFIBINIT", NULL, 4 },
+	{ 6, 0xf4, "NBIBISTMISC", NULL, 3 },
+
+	{ 7, 0x40, "ODRV_ADJ_ADDR_A", NULL, 3 },
+	{ 7, 0x43, "ODRV_ADJ_CAS_A", NULL, 3 },
+	{ 7, 0x46, "ODRV_ADJ_CKE_A", NULL, 3 },
+	{ 7, 0x49, "ODRV_ADJ_ODT_A", NULL, 3 },
+	{ 7, 0x4c, "ODRV_ADJ_ADDR_B", NULL, 3 },
+	{ 7, 0x4f, "ODRV_ADJ_CAS_B", NULL, 3 },
+	{ 7, 0x52, "ODRV_ADJ_CKE_B", NULL, 3 },
+	{ 7, 0x55, "ODRV_ADJ_ODT_B", NULL, 3 },
+	{ 7, 0x58, "ODRV_ADJ_CLK0", NULL, 3 },
+	{ 7, 0x5b, "ODRV_ADJ_CLK1", NULL, 3 },
+	{ 7, 0x5e, "ODRV_ADJ_CLK2", NULL, 3 },
+	{ 7, 0x61, "ODRV_ADJ_CLK3", NULL, 3 },
+	{ 7, 0x64, "ODRV_ADJ_DQ_DQS", NULL, 3 },
+	{ 7, 0x67, "DDR_ODTCTL", NULL, 1 },
+	{ 7, 0x69, "DDR_ZCAL", NULL, 2 },
+	{ 7, 0x6c, "DDR_ZCTL", NULL, 4 },
+	{ 7, 0x78, "VHOSTCNTL", NULL, 1 },
+	{ 7, 0x79, "DQSDLY_SMBUSCTL", NULL, 1 },
+	{ 7, 0x7c, "SPAD1", NULL, 4 },
+	{ 7, 0x80, "CTL_ADDR_A", NULL, 1 },
+	{ 7, 0x81, "CTL_CAS_A", NULL, 1 },
+	{ 7, 0x82, "CTL_CKE_A", NULL, 1 },
+	{ 7, 0x83, "CTL_ODT_A", NULL, 1 },
+	{ 7, 0x84, "CTL_ADDR_B", NULL, 1 },
+	{ 7, 0x85, "CTL_CAS_B", NULL, 1 },
+	{ 7, 0x86, "CTL_CKE_B", NULL, 1 },
+	{ 7, 0x87, "CTL_ODT_B", NULL, 1 },
+	{ 7, 0x88, "CTL_CLK0", NULL, 1 },
+	{ 7, 0x89, "CTL_CLK1", NULL, 1 },
+	{ 7, 0x8a, "CTL_CLK2", NULL, 1 },
+	{ 7, 0x8b, "CTL_CLK3", NULL, 1 },
+	{ 7, 0x8c, "CTL_DQ", NULL, 1 },
+	{ 7, 0x8d, "CTL_DQS", NULL, 1 },
+	{ 0, 0x00, NULL, NULL, 0 },
+};
+
+static void dump_amb(volatile void *ambconfig, int branch, int channel, int amb)
+{
+	struct amb_register *reg;
+	static int lastreg, lastfn;
+	int bytes;
+
+	volatile void *base = ambconfig + \
+		((branch << 16) | (channel << 15) | (amb << 11));
+
+	if ((amb_read_config32(base, 0, 0) == 0xffffffff) |
+	    (amb_read_config32(base, 0, 0) == 0x00000000))
+		return;
+
+	printf("AMB %d, branch %d, channel %d register dump:\n"
+	       "============================================\n",
+	       amb, branch, channel);
+
+	for(reg = amb_registers; reg->name; reg++) {
+		if (reg->fn == lastfn && reg->offset > 0 && reg->offset - lastreg) {
+			bytes = reg->offset - lastreg;
+
+			do {
+				if (!(lastreg & 3) && bytes >= 4) {
+					amb_printreg32(base, reg->fn, lastreg, "RESERVED", 0);
+					bytes -= 4;
+					lastreg += 4;
+				} else if (!(lastreg & 1) && bytes >= 2) {
+					amb_printreg16(base, reg->fn, lastreg, "RESERVED", 0);
+					bytes -= 2;
+					lastreg += 2;
+				} else {
+					amb_printreg8(base, reg->fn, lastreg, "RESERVED", 0);
+					bytes -= 1;
+					lastreg += 1;
+				}
+			} while(bytes > 0);
+		}
+
+		switch(reg->width) {
+		case 1:
+			amb_printreg8(base, reg->fn, reg->offset, reg->name, 1);
+			break;
+		case 2:
+			amb_printreg16(base, reg->fn, reg->offset, reg->name, 1);
+			break;
+
+		case 3:
+			amb_printreg24(base, reg->fn, reg->offset, reg->name, 1);
+			break;
+
+		case 4:
+			amb_printreg32(base, reg->fn, reg->offset, reg->name, 1);
+			break;
+
+		default:
+			break;
+		}
+
+		if (reg->printfunc)
+			reg->printfunc(base, reg->fn, reg->offset, reg->name, 1);
+		lastreg = reg->offset + reg->width;
+		lastfn = reg->fn;
+	}
+	printf("\n\n");
+}
+
+int print_ambs(struct pci_dev *dev, struct pci_access *pacc)
+{
+	struct pci_dev *dev16;
+	int branch, channel, amb;
+	int max_branch, max_channel, max_amb;
+	volatile void *ambconfig;
+	uint64_t ambconfig_phys;
+
+	printf("\n============= AMBs ============\n\n");
+
+	switch (dev->device_id) {
+	case PCI_DEVICE_ID_INTEL_I5000P:
+	case PCI_DEVICE_ID_INTEL_I5000X:
+	case PCI_DEVICE_ID_INTEL_I5000Z:
+
+		max_branch = 2;
+
+		if (!(dev16 = pci_get_dev(pacc, 0, 0, 0x10, 0))) {
+			perror("Error: no device 0:16.0\n");
+			return 1;
+		}
+
+		ambconfig_phys = ((u64)pci_read_long(dev16, 0x4c) << 32) |
+			pci_read_long(dev16, 0x48);
+
+		max_channel = pci_read_byte(dev16, 0x56)/max_branch;
+		max_amb = pci_read_byte(dev16, 0x57);
+		break;
+
+	default:
+		fprintf(stderr, "Error: Dumping AMBs on this MCH is not (yet) supported.\n");
+		return 1;
+	}
+
+	if (!(ambconfig = map_physical(ambconfig_phys, AMB_CONFIG_SPACE_SIZE))) {
+		fprintf(stderr, "Error mapping AMB config space\n");
+		return 1;
+	}
+
+	for(branch = 0; branch < max_branch; branch++) {
+		for(channel = 0; channel < max_channel; channel++) {
+			for(amb = 0; amb < max_amb; amb++) {
+				dump_amb(ambconfig, branch, channel, amb);
+			}
+		}
+	}
+	unmap_physical((void *)ambconfig, AMB_CONFIG_SPACE_SIZE);
+	return 0;
+}
+
+