diff --git a/openbsc/src/libbsc/bsc_init.c b/openbsc/src/libbsc/bsc_init.c
index 19453f7..378f5ea 100644
--- a/openbsc/src/libbsc/bsc_init.c
+++ b/openbsc/src/libbsc/bsc_init.c
@@ -101,7 +101,7 @@
 		si_len = rc;
 	}
 
-	DEBUGP(DRR, "SI%s: %s\n", gsm_sitype_name(i),
+	DEBUGP(DRR, "SI%s: %s\n", get_value_string(osmo_sitype_strs, i),
 		osmo_hexdump(GSM_BTS_SI(bts, i), GSM_MACBLOCK_LEN));
 
 	switch (i) {
@@ -115,22 +115,22 @@
 			/* This assumes a combined BCCH and TCH on TS1...7 */
 			for (j = 0; j < 4; j++)
 				rsl_sacch_info_modify(&trx->ts[0].lchan[j],
-						      gsm_sitype2rsl(i),
+						      osmo_sitype2rsl(i),
 						      GSM_BTS_SI(bts, i), si_len);
 			for (j = 1; j < 8; j++) {
 				rsl_sacch_info_modify(&trx->ts[j].lchan[0],
-						      gsm_sitype2rsl(i),
+						      osmo_sitype2rsl(i),
 						      GSM_BTS_SI(bts, i), si_len);
 				rsl_sacch_info_modify(&trx->ts[j].lchan[1],
-						      gsm_sitype2rsl(i),
+						      osmo_sitype2rsl(i),
 						      GSM_BTS_SI(bts, i), si_len);
 			}
 		} else
-			rc = rsl_sacch_filling(trx, gsm_sitype2rsl(i),
+			rc = rsl_sacch_filling(trx, osmo_sitype2rsl(i),
 					       GSM_BTS_SI(bts, i), rc);
 		break;
 	default:
-		rc = rsl_bcch_info(trx, gsm_sitype2rsl(i),
+		rc = rsl_bcch_info(trx, osmo_sitype2rsl(i),
 				   GSM_BTS_SI(bts, i), rc);
 		break;
 	}
diff --git a/openbsc/src/libbsc/system_information.c b/openbsc/src/libbsc/system_information.c
index 926a490..353b3dd 100644
--- a/openbsc/src/libbsc/system_information.c
+++ b/openbsc/src/libbsc/system_information.c
@@ -25,32 +25,16 @@
 #include <stdio.h>
 #include <netinet/in.h>
 
+#include <osmocom/core/bitvec.h>
+#include <osmocom/core/utils.h>
+#include <osmocom/gsm/sysinfo.h>
+
+#include <openbsc/debug.h>
 #include <openbsc/gsm_04_08.h>
 #include <openbsc/gsm_data.h>
 #include <openbsc/abis_rsl.h>
 #include <openbsc/rest_octets.h>
-#include <osmocom/core/bitvec.h>
-#include <osmocom/core/utils.h>
-#include <openbsc/debug.h>
 
-#define GSM48_CELL_CHAN_DESC_SIZE	16
-#define GSM_MACBLOCK_PADDING		0x2b
-
-/* verify the sizes of the system information type structs */
-
-/* rest octets are not part of the struct */
-osmo_static_assert(sizeof(struct gsm48_system_information_type_header) == 3, _si_header_size);
-osmo_static_assert(sizeof(struct gsm48_rach_control) == 3, _si_rach_control);
-osmo_static_assert(sizeof(struct gsm48_system_information_type_1) == 22, _si1_size);
-osmo_static_assert(sizeof(struct gsm48_system_information_type_2) == 23, _si2_size);
-osmo_static_assert(sizeof(struct gsm48_system_information_type_3) == 19, _si3_size);
-osmo_static_assert(sizeof(struct gsm48_system_information_type_4) == 13, _si4_size);
-
-/* bs11 forgot the l2 len, 0-6 rest octets */
-osmo_static_assert(sizeof(struct gsm48_system_information_type_5) == 18, _si5_size);
-osmo_static_assert(sizeof(struct gsm48_system_information_type_6) == 11, _si6_size);
-
-osmo_static_assert(sizeof(struct gsm48_system_information_type_13) == 3, _si13_size);
 
 /* Frequency Lists as per TS 04.08 10.5.2.13 */
 
@@ -491,54 +475,6 @@
 	return sizeof (*si13) + ret;
 }
 
-static const uint8_t sitype2rsl[_MAX_SYSINFO_TYPE] = {
-	[SYSINFO_TYPE_1]	= RSL_SYSTEM_INFO_1,
-	[SYSINFO_TYPE_2]	= RSL_SYSTEM_INFO_2,
-	[SYSINFO_TYPE_3]	= RSL_SYSTEM_INFO_3,
-	[SYSINFO_TYPE_4]	= RSL_SYSTEM_INFO_4,
-	[SYSINFO_TYPE_5]	= RSL_SYSTEM_INFO_5,
-	[SYSINFO_TYPE_6]	= RSL_SYSTEM_INFO_6,
-	[SYSINFO_TYPE_7]	= RSL_SYSTEM_INFO_7,
-	[SYSINFO_TYPE_8]	= RSL_SYSTEM_INFO_8,
-	[SYSINFO_TYPE_9]	= RSL_SYSTEM_INFO_9,
-	[SYSINFO_TYPE_10]	= RSL_SYSTEM_INFO_10,
-	[SYSINFO_TYPE_13]	= RSL_SYSTEM_INFO_13,
-	[SYSINFO_TYPE_16]	= RSL_SYSTEM_INFO_16,
-	[SYSINFO_TYPE_17]	= RSL_SYSTEM_INFO_17,
-	[SYSINFO_TYPE_18]	= RSL_SYSTEM_INFO_18,
-	[SYSINFO_TYPE_19]	= RSL_SYSTEM_INFO_19,
-	[SYSINFO_TYPE_20]	= RSL_SYSTEM_INFO_20,
-	[SYSINFO_TYPE_2bis]	= RSL_SYSTEM_INFO_2bis,
-	[SYSINFO_TYPE_2ter]	= RSL_SYSTEM_INFO_2ter,
-	[SYSINFO_TYPE_2quater]	= RSL_SYSTEM_INFO_2quater,
-	[SYSINFO_TYPE_5bis]	= RSL_SYSTEM_INFO_5bis,
-	[SYSINFO_TYPE_5ter]	= RSL_SYSTEM_INFO_5ter,
-};
-
-static const uint8_t rsl2sitype[0xff] = {
-	[RSL_SYSTEM_INFO_1] = SYSINFO_TYPE_1,
-	[RSL_SYSTEM_INFO_2] = SYSINFO_TYPE_2,
-	[RSL_SYSTEM_INFO_3] = SYSINFO_TYPE_3,
-	[RSL_SYSTEM_INFO_4] = SYSINFO_TYPE_4,
-	[RSL_SYSTEM_INFO_5] = SYSINFO_TYPE_5,
-	[RSL_SYSTEM_INFO_6] = SYSINFO_TYPE_6,
-	[RSL_SYSTEM_INFO_7] = SYSINFO_TYPE_7,
-	[RSL_SYSTEM_INFO_8] = SYSINFO_TYPE_8,
-	[RSL_SYSTEM_INFO_9] = SYSINFO_TYPE_9,
-	[RSL_SYSTEM_INFO_10] = SYSINFO_TYPE_10,
-	[RSL_SYSTEM_INFO_13] = SYSINFO_TYPE_13,
-	[RSL_SYSTEM_INFO_16] = SYSINFO_TYPE_16,
-	[RSL_SYSTEM_INFO_17] = SYSINFO_TYPE_17,
-	[RSL_SYSTEM_INFO_18] = SYSINFO_TYPE_18,
-	[RSL_SYSTEM_INFO_19] = SYSINFO_TYPE_19,
-	[RSL_SYSTEM_INFO_20] = SYSINFO_TYPE_20,
-	[RSL_SYSTEM_INFO_2bis] = SYSINFO_TYPE_2bis,
-	[RSL_SYSTEM_INFO_2ter] = SYSINFO_TYPE_2ter,
-	[RSL_SYSTEM_INFO_2quater] = SYSINFO_TYPE_2quater,
-	[RSL_SYSTEM_INFO_5bis] = SYSINFO_TYPE_5bis,
-	[RSL_SYSTEM_INFO_5ter] = SYSINFO_TYPE_5ter,
-};
-
 typedef int (*gen_si_fn_t)(uint8_t *output, struct gsm_bts *bts);
 
 static const gen_si_fn_t gen_si_fn[_MAX_SYSINFO_TYPE] = {
@@ -551,41 +487,6 @@
 	[SYSINFO_TYPE_13] = &generate_si13,
 };
 
-const struct value_string osmo_sitype_strs[_MAX_SYSINFO_TYPE] = {
-	{ SYSINFO_TYPE_1,	"1" },
-	{ SYSINFO_TYPE_2,	"2" },
-	{ SYSINFO_TYPE_3,	"3" },
-	{ SYSINFO_TYPE_4,	"4" },
-	{ SYSINFO_TYPE_5,	"5" },
-	{ SYSINFO_TYPE_6,	"6" },
-	{ SYSINFO_TYPE_7,	"7" },
-	{ SYSINFO_TYPE_8,	"8" },
-	{ SYSINFO_TYPE_9,	"9" },
-	{ SYSINFO_TYPE_10,	"10" },
-	{ SYSINFO_TYPE_13,	"13" },
-	{ SYSINFO_TYPE_16,	"16" },
-	{ SYSINFO_TYPE_17,	"17" },
-	{ SYSINFO_TYPE_18,	"18" },
-	{ SYSINFO_TYPE_19,	"19" },
-	{ SYSINFO_TYPE_20,	"20" },
-	{ SYSINFO_TYPE_2bis,	"2bis" },
-	{ SYSINFO_TYPE_2ter,	"2ter" },
-	{ SYSINFO_TYPE_2quater,	"2quater" },
-	{ SYSINFO_TYPE_5bis,	"5bis" },
-	{ SYSINFO_TYPE_5ter,	"5ter" },
-	{ 0, NULL }
-};
-
-uint8_t gsm_sitype2rsl(enum osmo_sysinfo_type si_type)
-{
-	return sitype2rsl[si_type];
-}
-
-const char *gsm_sitype_name(enum osmo_sysinfo_type si_type)
-{
-	return get_value_string(osmo_sitype_strs, si_type);
-}
-
 int gsm_generate_si(struct gsm_bts *bts, enum osmo_sysinfo_type si_type)
 {
 	gen_si_fn_t gen_si;