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| author | Oliver O'Halloran <oohall@gmail.com> | 2018-01-05 09:55:53 +1100 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2018-01-05 10:55:05 +1100 |
| commit | 9fe72fc36d209d92ff745e7582a109b025997244 (patch) | |
| tree | 369c3ade3800b90bf46da20878b539b574f3460e | |
| parent | 73a69e147e2786a7a16c9c04237ca2839fba7066 (diff) | |
| download | skiboot-9fe72fc36d209d92ff745e7582a109b025997244.zip skiboot-9fe72fc36d209d92ff745e7582a109b025997244.tar.gz skiboot-9fe72fc36d209d92ff745e7582a109b025997244.tar.bz2 | |
hdata: Parse IPL FW feature settingsskiboot-5.4.9
Add parsing for the firmware feature flags in the HDAT. This
indicates the settings of various parameters which are set at IPL time
by firmware.
Cc: stable # 5.4.x 371e88e23662 eeba2d64fb7a 0abc3af7e8f6
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
(cherry picked from commit 4e23b42d2ad76da21422a1d2de471df29f76b8df)
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
| -rw-r--r-- | hdata/spira.c | 47 | ||||
| -rw-r--r-- | hdata/spira.h | 7 |
2 files changed, 54 insertions, 0 deletions
diff --git a/hdata/spira.c b/hdata/spira.c index 592197e..428b3e0 100644 --- a/hdata/spira.c +++ b/hdata/spira.c @@ -14,6 +14,7 @@ * limitations under the License. */ +#include <inttypes.h> #include <device.h> #include "spira.h" #include <cpu.h> @@ -916,6 +917,51 @@ static void add_iplparams_platform_dump(const void *iplp, struct dt_node *node) } } +static void add_iplparams_features(const struct HDIF_common_hdr *iplp) +{ + const struct iplparams_feature *feature; + const struct HDIF_array_hdr *array; + struct dt_node *fw_features; + unsigned int count, i; + char name[65]; + + array = HDIF_get_iarray(iplp, IPLPARAMS_FEATURES, &count); + if (!array || !count) + return; + + opal_node = dt_new_check(dt_root, "ibm,opal"); + fw_features = dt_new(opal_node, "fw-features"); + if (!fw_features) + return; + + HDIF_iarray_for_each(array, i, feature) { + struct dt_node *n; + uint64_t flags; + + /* the name field isn't necessarily null terminated */ + strncpy(name, feature->name, sizeof(feature->name)); + flags = be64_to_cpu(feature->flags); + + prlog(PR_DEBUG, "IPLPARAMS: FW feature %s = %016"PRIx64"\n", + name, flags); + + /* get rid of tm-suspend-mode-enabled being disabled */ + if (strcmp(name, "tm-suspend-mode-enabled") == 0) + strcpy(name, "tm-suspend-mode"); + + n = dt_new(fw_features, name); + + /* + * This is a bit overkill, but we'll want seperate properties + * for each flag bit(s). + */ + if (flags & PPC_BIT(0)) + dt_add_property(n, "enabled", NULL, 0); + else + dt_add_property(n, "disabled", NULL, 0); + } +} + static void add_iplparams(void) { struct dt_node *iplp_node; @@ -936,6 +982,7 @@ static void add_iplparams(void) add_iplparams_ipl_params(ipl_parms, iplp_node); add_iplparams_serials(ipl_parms, iplp_node); add_iplparams_platform_dump(ipl_parms, iplp_node); + add_iplparams_features(ipl_parms); } /* Various structure contain a "proc_chip_id" which is an arbitrary diff --git a/hdata/spira.h b/hdata/spira.h index eabf7f9..7fdc2d0 100644 --- a/hdata/spira.h +++ b/hdata/spira.h @@ -380,6 +380,13 @@ struct iplparms_serial { #define PLPARMS_SERIAL_FLAGS_CALLHOME 0x8000 } __packed; +/* Idata index 9: FW features */ +#define IPLPARAMS_FEATURES 9 +struct iplparams_feature { + char name[64]; + __be64 flags; +} __packed; + /* * Chip TOD structure * |