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authorYouness Alaoui <youness.alaoui@puri.sm>2018-03-13 16:58:52 -0400
committerNico Huber <nico.h@gmx.de>2018-06-11 20:55:06 +0000
commitd8214d7e0e3083de30f269d720ab816736ed79eb (patch)
treeb2efbbe9faa7388e89a3b71bd99cfa3080a76e8e /util/inteltool/inteltool.c
parentcfd8929ac610f5e7ca14b92cd617270d800319f2 (diff)
downloadcoreboot-d8214d7e0e3083de30f269d720ab816736ed79eb.tar.xz
inteltool: Add dumping of full PCR ports
SoCs from Skylake on have many settings as so called private con- figuration registers (PCRs). These are organized as 256 ports with a 64KiB space each. We use the Primary to Sideband (P2SB) bridge's BAR to access them. Change-Id: Iede4ac601355e2be377bc986d62d20098980ec35 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/19593 Reviewed-by: Youness Alaoui <snifikino@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'util/inteltool/inteltool.c')
-rw-r--r--util/inteltool/inteltool.c32
1 files changed, 31 insertions, 1 deletions
diff --git a/util/inteltool/inteltool.c b/util/inteltool/inteltool.c
index ac30fdd242..24d62e1208 100644
--- a/util/inteltool/inteltool.c
+++ b/util/inteltool/inteltool.c
@@ -24,6 +24,7 @@
#include <fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
+#include <errno.h>
#include "inteltool.h"
#include "pcr.h"
@@ -31,6 +32,12 @@
#include <machine/sysarch.h>
#endif
+#define MAX_PCR_PORTS 8 /* how often may `--pcr` be specified */
+
+enum long_only_opts {
+ LONG_OPT_PCR = 0x100,
+};
+
/*
* http://pci-ids.ucw.cz/read/PC/8086
* http://en.wikipedia.org/wiki/Intel_Tick-Tock
@@ -369,7 +376,9 @@ void print_usage(const char *name)
" -A | --ambs: dump AMB registers\n"
" -x | --sgx: dump SGX status\n"
" -a | --all: dump all known (safe) registers\n"
- "\n");
+ " --pcr=PORT_ID: dump all registers of a PCR port\n"
+ " (may be specified max %d times)\n"
+ "\n", MAX_PCR_PORTS);
exit(1);
}
@@ -388,6 +397,8 @@ int main(int argc, char *argv[])
int dump_pciexbar = 0, dump_coremsrs = 0, dump_ambs = 0;
int dump_spi = 0, dump_gfx = 0, dump_ahci = 0, dump_sgx = 0;
int show_gpio_diffs = 0;
+ size_t pcr_count = 0;
+ uint8_t dump_pcr[MAX_PCR_PORTS];
static struct option long_options[] = {
{"version", 0, 0, 'v'},
@@ -408,6 +419,7 @@ int main(int argc, char *argv[])
{"gfx", 0, 0, 'f'},
{"ahci", 0, 0, 'R'},
{"sgx", 0, 0, 'x'},
+ {"pcr", required_argument, 0, LONG_OPT_PCR},
{0, 0, 0, 0}
};
@@ -479,6 +491,21 @@ int main(int argc, char *argv[])
case 'x':
dump_sgx = 1;
break;
+ case LONG_OPT_PCR:
+ if (pcr_count < MAX_PCR_PORTS) {
+ errno = 0;
+ const unsigned long int pcr =
+ strtoul(optarg, NULL, 0);
+ if (strlen(optarg) == 0 || errno) {
+ print_usage(argv[0]);
+ exit(1);
+ }
+ dump_pcr[pcr_count++] = (uint8_t)pcr;
+ } else {
+ print_usage(argv[0]);
+ exit(1);
+ }
+ break;
case 'h':
case '?':
default:
@@ -685,6 +712,9 @@ int main(int argc, char *argv[])
if (dump_sgx)
print_sgx();
+ if (pcr_count)
+ print_pcr_ports(sb, dump_pcr, pcr_count);
+
/* Clean up */
pcr_cleanup();
if (ahci)