diff options
| author | Vasant Hegde <hegdevasant@linux.vnet.ibm.com> | 2017-09-13 10:54:24 +0530 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-09-19 04:16:53 -0500 |
| commit | c68fcc866a7b4064209c4fca85246b6ac1780451 (patch) | |
| tree | 1c56e2d46309cbfe430f7e68764a6694024dcc45 /hdata | |
| parent | 6fa9cea1638dcada59d27e924616fac509cf25f8 (diff) | |
| download | skiboot-c68fcc866a7b4064209c4fca85246b6ac1780451.zip skiboot-c68fcc866a7b4064209c4fca85246b6ac1780451.tar.gz skiboot-c68fcc866a7b4064209c4fca85246b6ac1780451.tar.bz2 | |
hdata: Add wafer-id property
Wafer id is derived from ECID data.
bits 4:63 are the wafer id ( ten 6 bit fields each containing a code)
Sample output:
-------------
[root@wsp xscom@623fc00000000]# lsprop ecid
ecid 019a00d4 03100718 852c0000 00fd7911
[root@wsp xscom@623fc00000000]# lsprop wafer-id
wafer-id "6Q0DG340SO"
Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'hdata')
| -rw-r--r-- | hdata/spira.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/hdata/spira.c b/hdata/spira.c index 2d41e91..a652d63 100644 --- a/hdata/spira.c +++ b/hdata/spira.c @@ -411,6 +411,9 @@ static void add_vas_node(struct dt_node *np, int idx) static void add_ecid_data(const struct HDIF_common_hdr *hdr, struct dt_node *xscom) { + char wafer_id[11]; + uint8_t tmp; + int i; uint32_t size = 0; struct sppcrd_ecid *ecid; const struct HDIF_array_hdr *ec_hdr; @@ -422,6 +425,28 @@ static void add_ecid_data(const struct HDIF_common_hdr *hdr, ecid = (void *)ec_hdr + be32_to_cpu(ec_hdr->offset); dt_add_property_u64s(xscom, "ecid", be64_to_cpu(ecid->low), be64_to_cpu(ecid->high)); + + /* + * bits 4:63 of ECID data contains wafter ID data (ten 6 bit fields + * each containing a code). + */ + for (i = 0; i < 10; i++) { + tmp = (u8)((ecid->low >> (i * 6)) & 0x3f); + if (tmp <= 9) + wafer_id[9 - i] = tmp + '0'; + else if (tmp >= 0xA && tmp <= 0x23) + wafer_id[9 - i] = tmp + '0' + 7; + else if (tmp == 0x3D) + wafer_id[9 - i] = '-'; + else if (tmp == 0x3E) + wafer_id[9 - i] = '.'; + else if (tmp == 0x3F) + wafer_id[9 - i] = ' '; + else /* Unknown code */ + wafer_id[9 - i] = tmp + '0'; + } + wafer_id[10] = '\0'; + dt_add_property_nstr(xscom, "wafer-id", wafer_id, 10); } static void add_xscom_add_pcia_assoc(struct dt_node *np, uint32_t pcid) |