Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 167 insertions, 0 deletions

diff --git a/roms/skiboot/external/xscom-utils/getscom.c b/roms/skiboot/external/xscom-utils/getscom.c
new file mode 100644
index 000000000..67596e618
--- /dev/null
+++ b/roms/skiboot/external/xscom-utils/getscom.c
@@ -0,0 +1,167 @@
+// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+/*
+ * getscom
+ *
+ * Copyright 2014-2017 IBM Corp.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <inttypes.h>
+
+#include "xscom.h"
+
+static void print_usage(int code)
+{
+	printf("usage: getscom [-c|--chip chip-id] [-b|--list-bits] addr\n");
+	printf("       getscom -l|--list-chips\n");
+	printf("       getscom -v|--version\n");
+	printf("\n");
+	printf("       NB: --list-bits shows which PPC bits are set\n");
+	exit(code);
+}
+
+static void print_chip_info(uint32_t chip_id)
+{
+	uint64_t f000f, cfam_id;
+	const char *name;
+	char uname_buf[64];
+	int rc;
+
+	rc = xscom_read(chip_id, 0xf000f, &f000f);
+	if (rc)
+		return;
+
+	cfam_id = f000f >> 44;
+
+	switch(cfam_id & 0xff) {
+	case 0xef:
+		name = "P8E (Murano) processor";
+		break;
+	case 0xea:
+		name = "P8 (Venice) processor";
+		break;
+	case 0xd3:
+		name = "P8NVL (Naples) processor";
+		break;
+	case 0xd1:
+		name = "P9 (Nimbus) processor";
+		break;
+	case 0xd4:
+		name = "P9 (Cumulus) processor";
+		break;
+	case 0xd9:
+		name = "P9P (Axone) processor";
+		break;
+	case 0xda:
+		name = "P10 processor";
+		break;
+	case 0xe9:
+		name = "Centaur memory buffer";
+		break;
+	default:
+		snprintf(uname_buf, sizeof(uname_buf), "Unknown ID 0x%02lx",
+			 cfam_id & 0xff);
+		name = uname_buf;
+	}
+
+	printf("%08x | DD%lx.%lx | %s\n",
+	       chip_id, (cfam_id >> 16) & 0xf, (cfam_id >> 8) & 0xf, name);
+}
+
+extern const char version[];
+
+int main(int argc, char *argv[])
+{
+	uint64_t val, addr = -1ull;
+	uint32_t def_chip, chip_id = 0xffffffff;
+	bool list_chips = false;
+	bool no_work = false;
+	bool list_bits = false;
+	int rc;
+
+	while(1) {
+		static struct option long_opts[] = {
+			{"chip",	required_argument,	NULL,	'c'},
+			{"list-chips",	no_argument,		NULL,	'l'},
+			{"help",	no_argument,		NULL,	'h'},
+			{"version",	no_argument,		NULL,	'v'},
+			{"list-bits",	no_argument,		NULL,	'b'},
+		};
+		int c, oidx = 0;
+
+		c = getopt_long(argc, argv, "-c:bhlv", long_opts, &oidx);
+		if (c == EOF)
+			break;
+		switch(c) {
+		case 1:
+			addr = strtoull(optarg, NULL, 16);
+			break;
+		case 'c':
+			chip_id = strtoul(optarg, NULL, 16);
+			break;
+		case 'h':
+			print_usage(0);
+			break;
+		case 'l':
+			list_chips = true;
+			break;
+		case 'b':
+			list_bits = true;
+			break;
+		case 'v':
+			printf("xscom utils version %s\n", version);
+			exit(0);
+		default:
+			exit(1);
+		}
+	}
+	
+	if (addr == -1ull)
+		no_work = true;
+	if (no_work && !list_chips) {
+		fprintf(stderr, "Invalid or missing address\n");
+		print_usage(1);
+	}
+
+	def_chip = xscom_init();
+	if (def_chip == 0xffffffff) {
+		fprintf(stderr, "No valid XSCOM chip found\n");
+		exit(1);
+	}
+	if (list_chips) {
+		printf("Chip ID  | Rev   | Chip type\n");
+		printf("---------|-------|--------\n");
+		xscom_for_each_chip(print_chip_info);
+	}
+	if (no_work)
+		return 0;
+	if (chip_id == 0xffffffff)
+		chip_id = def_chip;
+
+	rc = xscom_read(chip_id, addr, &val);
+	if (rc) {
+		fprintf(stderr,"Error %d reading XSCOM\n", rc);
+		exit(1);
+	}
+
+	printf("%016" PRIx64, val);
+
+	if (list_bits) {
+		int i;
+
+		printf(" - set: ");
+
+		for (i = 0; i < 64; i++)
+			if (val & PPC_BIT(i))
+				printf("%d ", i);
+	}
+
+	putchar('\n');
+
+	return 0;
+}
+