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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2017-01-15 22:38:25 -0600 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-02-02 18:30:26 +1100 |
| commit | c9cadb4fe60d4d41fc45a35a1d2ae27e0632c679 (patch) | |
| tree | abdefbe0aa2b14b15198ba8cb56540823677d900 | |
| parent | 48dee7ac0bc259316b28fc27463625c605160a9a (diff) | |
| download | skiboot-c9cadb4fe60d4d41fc45a35a1d2ae27e0632c679.zip skiboot-c9cadb4fe60d4d41fc45a35a1d2ae27e0632c679.tar.gz skiboot-c9cadb4fe60d4d41fc45a35a1d2ae27e0632c679.tar.bz2 | |
xscom: Grab P9 DD1.0 revision level
To differentiate between 1.00, 1.01, 1.02 etc...
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
| -rw-r--r-- | hw/xscom.c | 28 | ||||
| -rw-r--r-- | include/chip.h | 1 |
2 files changed, 29 insertions, 0 deletions
@@ -599,6 +599,34 @@ static void xscom_init_chip_info(struct proc_chip *chip) /* Get EC level from CFAM ID */ chip->ec_level = ((val >> 16) & 0xf) << 4; chip->ec_level |= (val >> 8) & 0xf; + + /* + * On P9 DD1.0, grab the ECID bits to differenciate + * DD1.01, 1.02 etc... + */ + if (proc_gen == proc_gen_p9 && chip->ec_level == 0x10) { + uint64_t ecid2 = 0; + uint8_t rev; + xscom_read(chip->id, 0x18002, &ecid2); + switch((ecid2 >> 45) & 7) { + case 0: + rev = 0; + break; + case 1: + rev = 1; + break; + case 3: + rev = 2; + break; + case 7: + rev = 3; + break; + default: + rev = 0; + } + printf("P9 DD1.0%d detected\n", rev); + chip->ec_rev = rev; + } } /* diff --git a/include/chip.h b/include/chip.h index 61b413c..588db9f 100644 --- a/include/chip.h +++ b/include/chip.h @@ -155,6 +155,7 @@ struct proc_chip { /* These are only initialized after xcom_init */ enum proc_chip_type type; uint32_t ec_level; /* 0xMm (DD1.0 = 0x10) */ + uint8_t ec_rev; /* sub-revision */ /* Those two values are only populated on machines with an FSP * dbob_id = Drawer/Block/Octant/Blade (DBOBID) |